Answer:
40%
Step-by-step explanation:
You want to know what percent of $70 is $28.
EquationThe question can be written as an equation, using a variable for the unknown percentage:
x% · $70 = $28
SolutionThe percent sign can be considered to be fully equivalent to "/100". Dividing by dollars on both sides, we can rewrite the equation as ...
x/100 · 70 = 28
Dividing by the coefficient of x gives ...
x = 28/0.70
x = 40
The complete statement is ...
40% of $70 = $28
__
Additional comment
If you're comfortable with writing decimal fractions as percentages, and vice versa, you can do without the %, and simply write ...
x · 70 = 28
x = 28/70 = 0.40 = 40%
This tells you 40% of $70 is $28, which is what you want to know.
The theoretical probability of an event occurring is two-fifths. which best describes the experimental probability associated with this event?
The correct option is B. Out of every 5 trials, the desired outcome will occur approximately 2 times.
Explain the term experimental probability?The number of times an event happened during the experiment as a percentage of all the times the experiment was run is known as that of the experimental probability of that event occurring.The ratio between the number of favorable events and the total number of conceivable outcomes is known as the theoretical probability.For the stated question -
The first claim asserts that it will occur exactly twice, yet probability never assures success.
The second and fourth statements refer to "out of 7," which is false because "out of 7" is equivalent to "out of 2 to 5"
Thus, conclusion is out of every 5 trials, the desired outcome will occur approximately 2 times.
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The complete question is-
The theoretical probability of an event occurring is Two-fifths. Which best describes the experimental probability associated with this event?
A. Out of every 5 trials, the desired outcome will occur exactly 2 times.
B. Out of every 5 trials, the desired outcome will occur approximately 2 times.
C. Out of every 7 trials, there will be 2 desired outcomes and 5 undesired outcomes.
D. Out of every 7 trials, there will be 5 desired outcomes and 2 undesired outcomes.
I NEED THIS ASAP
Factor −6x2 + 18x.
Answer:
-6x (x-3)
Step-by-step explanation:
Branliest Pls!
Can someone explain this?
It looks like you are supposed to match those 20 given equations to their respective graph that the assignment gave you. Do you need help plotting them? If so, I can edit my answer and add a picture of the equations graphed.
If you have an average of 31 and you have the numbers 63,53,20,10, what is the missing value?
Answer: 9
Step-by-step explanation:
Let's start with what we know. If we have the data set:
63, 53, 20, 10, x
The average is:
(63+53+20+10+x)/5 = 31
We multiply both sides by 5
(65+53+20+10) = 155
146 + x = 155
x = 9
Urgent help guysssss
Answer: A
Step-by-step explanation:
Guide
Leo argues that the measure of an exterior angle of a triangle is
equal to the sum of the measures of the two remote interior angles of
the triangle. He uses the diagram shown in his argument.
Xº
Leo writes the steps listed.
Step 1.r+x=180, since the sum of the measures of supplementary
angles is 180°
Step 2. p+q+r=180, since the sum of the measures of the angles
of any triangle is 180°
Which equations follow from step 1 and step 2 that Leo could use to
complete his argument?
r+x=p+q+r
r+x-r=p+q+r-r
x=p+q
p+q+r=180
bp+q+r-r=180-r
p+q=180-r
x+r=p+q+r
x+r-r=p+q+r+r
x=p+q+2r
(r+x) + (p+q+r)=180+180
2r+x+p+q=360
Answer:
Step-by-step explanation: It looks like Leo is trying to prove that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two remote interior angles of the triangle. From the equations given, it seems that Leo is using the fact that the sum of the measures of supplementary angles is 180 degrees, and the sum of the measures of the angles of any triangle is 180 degrees, to try to prove his statement. Some equations that Leo could use to complete his argument might include:
x = p + q, which follows from the equation r + x = 180 and the substitution of p + q + r = 180
p + q = 180 - r, which follows from the equation p + q + r = 180 and the substitution of r + x = 180
x = p + q + 2r, which follows from the equation x + r = p + q + r and the substitution of r + x = 180
It's not clear from the information given whether these equations are sufficient to prove Leo's statement, as we don't have any information about the values of p, q, r, or x. However, these equations might be a good starting point for Leo to continue his argument.
A salesperson at a jewelry store earns 9% commission
each week. Last week, Heidi sold $680 worth of jewelry.
How much did she make in commission? How much did
the jewelry store make from her sales?
Heidi earned [enter your response] in commission
Answer:
1/ Heidi earned $61.20 in commission
2/ The jewelry store makes $618.80 from hers sales
Step-by-step explanation:
9% = 0.09
First, take 680 times 0.09 = $61.20
Heidi earned $61.20 in commission
For the second question
Take 680 - 61.20 = $618.8
The jewelry store makes $618.80 from its sales
Diego is making sandwiches for a picnic. He uses 2 slices of cheese to make each sandwich,
and he has a package of cheese with 24 slices.
Write an equation that shows how the number of slices of cheese remaining, y, depends on
the number of sandwiches Diego makes, x.
Answer:
y = 24
y = 2x
what can we conclude about the endogeneity of an explanatory variable if the ols and 2sls estimates are significantly different? assume that the instrument used was exogenous.
Note that assuming that the instrument used was exogenous, one can conclude about the endogeneity of an explanatory variable if the OLS and 2SLS estimates are significantly different: "The explanatory variable is endogenous and therefore 2SLS should be considered." (Option C)
What is 2SLS?Two-stage least squares (2SLS) regression analysis is a statistical approach used in structural equation analysis. The OLS approach has been extended using this methodology. It is employed when the error terms of the dependent variable are associated with the independent variables.
The ordinary least squares (OLS) approach is a linear regression methodology used to estimate a model's unknown parameters. The strategy is based on reducing the sum of squared residuals between the expected and actual values.
2SLS is utilized as an alternate strategy when we encounter endogeneity Problems in OLS. Endogeneity arises when the explanatory variable correlates with the error word. Then we utilize 2SLS, which employs an instrumental variable. The outcome will be different because if there is endogeneity in the model, OLS will produce biased results.
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Full Question:
What can we conclude about the endogeneity of an explanatory variable if the OLS and 2SLS estimates are significantly different? Assume that the instrument used was exogenous. Select one:
a. The explanatory variable is not endogenous and therefore using 2SLS is ill-advised.
b. The explanatory variable is not endogenous and therefore OLS should not be used.
c. The explanatory variable is endogenous and therefore using 2SLS should be considered.
d. The explanatory variable is endogenous and therefore OLS should be used.
You are in charge of getting food for the class from the corner store. You can buy
chips for $2 or a hoagie for $5. There are 19 students in the class, so you need to buy
at least 19 items, and you have $77 total.
Write a system of equations to represent this situation. Use x to represent the number
of chips and y to represent the number of hoagies.
Separate each inequality with a comma,
The system of inequalities to represent the situation is 2x + 5y ≤ 77, x + y ≥ 19
How to represent a situation with inequality?You are in charge of getting food for the class from the corner store. You can buy chips for $2 or a hoagie for $5.
There are 19 students in the class, so you need to buy at least 19 items, and you have $77 total.
Hence, the system of inequality to represent this situation is as follows:
let
x = number of chips
y = number of hoagies
Therefore, the inequalities is as follows:
2x + 5y ≤ 77
x + y ≥ 19
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at a baby shower 17 guests are in attendance and 5 of them are randomly selected to receive a door prize. if all 5 prizes are identical, in how many ways can the prizes be awarded?
If 5 guests are randomly selected from 17 guest and all 5 prizes are identical, there are 89107200 ways in which the prizes can be awarded.
It is given to us that -
17 guests are in attendance at a baby shower
5 of them are randomly selected for a prize
All the 5 prizes are identical
We have to find out the number of ways in which the prizes can be awarded.
In this case, we have to use the combination formula to find the required answer.
We know that the combinations of n number of objects taken r at a time can be represented by the formula as -
[tex]C(n,r) = r!\frac{n!}{(n-r)!}[/tex] ------ (1)
where,
n = total objects in the given set
r = total chosen objects from the given set
According to the given information, we have -
n = 17
r = 5
Substituting these values in equation (1), we have
[tex]C(n,r) = r!\frac{n!}{(n-r)!}\\= > C(n,r) = 5!*\frac{17!}{(17-5)!}\\= > C(n,r) = 5!*\frac{17!}{12!}\\= > C(n,r) = 89107200[/tex]
Therefore, if 5 guests are randomly selected from 17 guest and all 5 prizes are identical, there are 89107200 ways in which the prizes can be awarded.
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The owner of a small computer repair business has
one employee, who is paid an hourly rate of $22.
The owner estimates his weekly profit using the
function P(x) = 8600 - 22x. In this function, x
represents
the number of
Answer:
employee's hours worked per week
Step-by-step explanation:
check answer
Answer:
In this function, x represents the number of 2) HOURS WORKED PER WEEK.
Help appreciated!!!
Consider a dilation of polygon ABCDEF from center O with scale factor r resulting in its image, polygon A'B'C'D'E'F'.
If EDC measures 117° then the measure of E'D'C' is___ If AB measures 1.8 inches and A'B' measures 4.5 inches, then the scale factor r is____
Name one segment from polygon ABCDEF and one segment from polygon A'B'C'D'E'F' that are parallel.
Step-by-step explanation:
in a dilation all the angles stay the same. only the lengths of lines (like sides or heights) change - and all with the same scale factor (which makes the original and the dilated result similar objects).
angle EDC = 117°.
therefore angle E'D'C' = 117°.
AB = 1.8 in
A'B' = 4.5 in
the scale factor r is
r = 4.5 / 1.8 = 2.5
every segment of A'B'C'D'E'F' is parallel to its original counterpart in ABCDEF.
like
AB to A'B'
as well as
BC to B'C'
CD to C'D'
DE to D'E'
EF to E'F'
that is the reason why projections work (even at an inclined angle of the projection screen the picture might seem strangely stretched, but the angles are still all the same, parallel lines remain parallel, perpendicular lines remain perpendicular, ... - and the viewer still recognizes the pictures).
What equation represents Twenty five is one sixth of the number n
The equation that represents "Twenty five is one sixth of the number n" is:25 = (1/6) * n
The equation "25 = (1/6) * n" represents the relationship between the number 25 and an unknown number, n. It states that 25 is equal to one sixth of n. In other words, if we multiply the unknown number n by one sixth (or divide n by 6), we will obtain the value of 25. This equation can be used to solve for the value of n by multiplying 25 by 6, which would give us the unknown number. It provides a clear mathematical expression of the given relationship and allows us to find the value of n based on the given condition.The equation states that 25 is equal to one sixth of the number n. This means that if we take one sixth of the value of n, we will get 25 as the result. In other words, if we divide the value of n by 6, the quotient will be 25.
To understand it conceptually, imagine that we have a number n and we want to find one sixth of that number. By dividing the number by 6, we can determine how many equal parts make up the whole number, and one of those parts is equal to 25.
This equation is useful in various situations, such as solving problems involving proportions or determining unknown values when given a fraction of a number.
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Anna is knitting hats to give as gifts. Each one will use 1.2 skeins, and she has 6 skeins of yarn available. With the yarn available, how many hats can Anna knit?
Answer:
5
Step-by-step explanation:
There are 6 total skeins, and 1.2 is needed to make one
So you would divide 6 by 1.2
6 / 1.2 = 5
And to confirm it is 5, you can now multiply 5 by 1.2
5 x 1.2 equals 6
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he
ne.
st
Simplify the following:
Holiday Bonus Problem
(5 Points)
X
{²+ + + ²x - 3X ICE +
R-X
{[(X + A)(X-A)M+A²M]E}
7
ruc
4AS
4AS
+
3X[(E+Y)²-(E-Y)²] * 3E[(Y + X)² – (Y-X)²] 3Y[(X + E)²-(X-E)²]
- BA}Y
4AS
Answer:
99987766554446677765
1. Here are some examples of data. Answer whether each is discrete or continuous data.
a. The number of customers in a shop.
b. The weight of a baby.
c. Shoe sizes.
d. The length of a leaf.
Answer:
discrete and continuous data
Answer:
a. Discrete data
b. Continuous data
c. Discrete data
d. Continuous data
Step-by-step explanation:
a. It is always possible to count the number of customers in a line, this is a type of discrete random variable.
b. The weight of a baby in its first year or the temperature in a room throughout the day.
c. Shoe sizes can be decimals (7.5 or 8.5) but there are still a fixed set of possible values with gaps between them (there is no 7.9 shoes size). Therefore shoe size is a discrete random variable.
d. The length is typically considered a continuous variable, since, a sea otter will typically not measure exactly 5 feet, but the length will differ by some fraction of a foot.
How do you measure the length of a line segment using a ruler or a compass? Explain the steps and show your work.
To measure the length of a line segment AB, place the zero marking of the ruler along the beginning of the line and measure its length.
A line segment has two definite endpoints in a line, and the line segment is fixed, which is the distance between two fixed points. The length can be measured by metric units such as centimeters, and millimeters.
A line segment with two endpoints A and B and is denoted by the bar symbol (—).
Using Ruler and Compass:
There are some markings on the ruler beginning from zero as shown in the figure. these markings divide the ruler into equal parts.
Each part is equal to a length of 1 cm and these units are measured in centimeters and are further subdivided into 10 parts and each sub-part is equivalent to 1 millimeter.
To measure a line segment AB, place the zero marking of the ruler along the beginning of the line and measure its length accordingly.
ln the figure, the length of line segment AB is 8 cm.
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A person invests 10000 dollars in a bank. The bank pays 6.5% interest compounded
annually. To the nearest tenth of a year, how long must the person leave the money
in the bank until it reaches 29500 dollars?
Answer: 3000 years
Step-by-step explanation:
Let y be the number of money and x be the number of years
So we have the equation
y= 6.5x + 10000
Now we put 29500 in the y
29500 = 6.5x + 10000
Subtracted 10000 from both sides
19500 = 6.5x
Divided both sides by 6.5
x = 3000 years
Mr waton buy 4 gallon of paint that cot 34 per gallon how much did mr waton pend on paint
Mr. Watson spent a total of $136 on the paint.
When taking on a painting project, it's important to factor in the cost of the paint. Mr. Watson was savvy enough to purchase 4 gallons of paint, which will likely be enough to cover a large area or multiple rooms. Not only did he save money by buying in bulk, but he also saved time by not having to go back to the store for more paint.
For those planning to take on a painting project, it's important to consider the cost of the paint as well as some other factors. It's important to research different brands and types of paint to make sure you're getting the best quality for the best value. Additionally, it's important to factor in the cost of supplies, such as brushes, rollers, and other tools.
Ultimately, Mr. Watson made a smart decision by purchasing 4 gallons of paint. He was able to get the job done while saving money and time.
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I need help with this question
please help
Answer:£84.45
Step-by-step explanation:
10 single packs costs £97.5
9.75x10
3 packs of 3 plus a single costs £84.45
24.90x3+9.75
2 packs of 5 costs £86.5
43.25x2
Answer:
pack of 3 rolls
Step-by-step explanation:
Two 5 packs is 86.50
Ten 1 packs are 97.50
Three 3 packs is 74.70 + 8.3 (1/3 of 3 pack) = £83
Pleaseeeeeeeeee helppppppp
Comparing both given functions, we can state that: B. Function 1 has the greater rate of change; the slope is 2.
What is the Rate of Change/Slope of a Function?Another name for the rate of change of a function is the slope. It is calculated using the formula:
Slope / rate of change = change in y / change in x.
If the equation of a linear function is given in slope-intercept form as y = mx + b, the rate of change or the slope is represented by "m".
Given the first function as an equation, y = 2x - 6, the slope of this function is represented as 2. This means, the rate of change is m = 2.
To find the rate of change of function 2, use two points from the table, (1, -4) and (2, -5):
Rate of change / slope (m) = (-5 - (-4)) / (2 - 1) = -1/1
m = -1.
The slope value of 2 is greater than the slope value of -1, therefore, we can conclude that: B. Function 1 has the greater rate of change; the slope is 2.
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Solve the equation and enter the value of x below.
x+ 272 = 298
Answer:
x = 26
Step-by-step explanation:
x + 272 = 298
x = 298 -272
x = 26
I hope my answer helps you.
choose the equation of the graphed function.
Answer:
J
Step-by-step explanation:
shifts to the right by 1
A water balloon is thrown upward from a height of 5 feet with an initial velocity of 35 feet per second. The quadratic function \large h\left(t\right)=-16t^2+35t+5 represents the height of the balloon, h, in feet t seconds after it is thrown. When does the water balloon reach the height of 20 feet? round your answer to the nearest thousandth.
Since, The equation of the height with the time is provided and the balloon is thrown upwards against gravity from 5 feet, The answer is 0.255 sec.
What do you mean by equation?A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.
What is initial and final velocity?When gravity first exerts force on an object, its initial velocity defines how quickly the object moves. The final velocity, on the other hand, is a vector number that gauges a moving body's speed and direction after it has reached its maximum acceleration.
initial height = 5
final height =20
height to travel =20-5 =15
[tex]15 = 16t^{2}+35t+5\\16t^{2}+35t-10 =0[/tex]
solving we get, t = 0.255 or -2.44
since, -2.44 is not possible,
t = 0.255 seconds.
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1. Is the relation on the right a function? Explain.
2. Can you state the domain and range of a relation that is not a function? If yes, what is the domain and range of the relation on the right?
3. Angelo states that all functions are relations but not all relations are functions. Do you agree with Angelo? Support your answer using an example.
1) The relation in the right is not a function.
2) domain
D: {-60, 20, 70}
range
R: {-6, 3, 2, 5}
3) Angelo is correct.
What is a function?A function is a relation that maps elements from one set called the domain into another set called the range, such each element from the domain is mapped into only one of the elements of the range.
Thus, if an element of the domain is being mapped into two or more elements of the range, then the relation is not a function.
1) If you look at the relationship in the right, you can see that the input -60 is being mapped into two different outputs, this, it is not a function.
2) The domain is the set in the left:
D: {-60, 20, 70}
And the range is the set in the right side:
R: {-6, 3, 2, 5}
3) Angelo is correct, functions are relations, but not all relations are functions, only the relations that meet the condition written above.
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Examine the linear graph below. Which equation represents this graph?
Answer:B) -2x + 3y = 12 represents the graph.The y-intercept is 4, and the line intercepts the x-axis at -6. Therefore, the slope of the line is 4/6=2/3. The format for a linear equation is y=(slope)x+y intercept. So the equation would be y=2/3x+4. We can see that option B simplifies that. Adding 2x from both sides of the equation and we get 3y=2x+12.
Solve this equation . 6x = 72 for x
Answer:
x = 12
Step-by-step explanation:
6x = 72 ( isolate x by dividing both sides by 6 )
x = 72 ÷ 6 = 12
Answer:
Step-by-step explanation:
6x = 72
Here, 6 is in multiplication with the variable x.
We will move 6 to the right side. With this the 6 which was in multiplication with x will now go in division with 72, by rule.
x = 72/6
x = 12
therefore, x = 12
the diameter of a circle is 16. by what number must the radius be decreased in order to decrease the area of the circle by $48\pi$?
To decrease the area of the circle by $48\pi$, we need to decrease the radius by a factor of $\sqrt{48\pi}$.
Since the original radius of the circle was 8, the radius must be decreased to
$\frac{8}{\sqrt{48\pi}} = \frac{8}{\sqrt{48}\sqrt{\pi}} = \frac{8}{\sqrt{48}} \approx \frac{8}{6.9282} \approx 1.1547$.Therefore, to decrease the area of the circle by $48\pi$, the radius must be decreased by a factor of about 1.1547.
This means that the radius must be decreased by a number that is about 1.1547 times smaller than the original radius of 8, or by about $8 \times (1 - 1.1547) = -0.6158$.
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If the m<2 = 58° and the m<13 = 111°, find the measures of angles 1, 5, 8, 14, 18.
Note: x || m and z || y
The value of angle 1 is 122°.
The value of angle 5 is 58°
The angle of angle 8 is 58°
The angle of angle 14 is 122°
The angle 18 is 58°
How to calculate the angles?It should be noted that this information deals with angles. It should be noted that the value of angle on a straight line is 180°.
In this situation, the value of angle 1 will be:
= 180° - 58°
= 122°
Also it should be noted that vertically opposite angles are equal. Therefore, angle 5 will be 58°.
In this situation, it should also be noted that alternate angles are the same. Hence, Thai gives the value of the angles for angles 8, 14 and 18.
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