Answer:
B. Yes, she used systematic random sampling
Explanation :
Systematic random sampling is method of sampling use in term of finding the the percent of a given population to find the final sample.
Which point is the same distance from the y-axis as point G but on the opposite side of the y-axis?
The point (6, 4) is the same distance from the y-axis as point G(-6, 4) but on the opposite side of the y-axis
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Point G on the coordinate plane is at G(-6, 4).
The point (6, 4) is the same distance from the y-axis as point G(-6, 4) but on the opposite side of the y-axis
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I’m not sure what to fill in
Answer:
(0, 5)
(1, 6)
(4, 7)
(9, 8)
Step-by-step explanation:
y = √x + 5
y = √0 + 5
= 5
y = √1 + 5
= 6
y = √4 + 5
= 2 + 5
= 7
y = √9 + 5
= 3 + 5
= 8
What would be the answer to this ?
The factorized form of the expression ( 2x² - x - 6 ) is ( 2x + 3 )( x - 2 ).
Hence, the missing values are 3 and 2 respectively.
What is the factorized form of the expression?Given the expression: 2x² - x - 6
First, we factor -1 out of -x
2x² - x - 6
2x² -1(x) - 6
Not that, -1 can also be written as 3-4
2x² + (3-4)x - 6
2x² + 3x - 4x - 6
Next, we group the first two terms and the last two terms and factor out the GCF
(2x² + 3x) - 4x - 6
x(2x + 3) - 2( 2x + 3)
Factor out the GFC which is ( 2x+3 )
We have; ( 2x + 3 )( x - 2 )
The factorized form of the expression ( 2x² - x - 6 ) is ( 2x + 3 )( x - 2 ).
Hence, the missing values are 3 and 2 respectively.
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7x⁴ + 3x² - 4 X= -2
Answer:
Step-by-step explanation:
Determine the standard form of the equation for the circle with center (h,k) =( -5, 1/2) and radius r=1
Answer:
[tex](x + 5) ^{2} + {(y - \frac{1}{2}) }^{2} = 1[/tex]
Step-by-step explanation:
the formula of a circle is
[tex] {(x - h)}^{2} + {(y - k)}^{2} = {r}^{2} [/tex]
knowing the values of h, k, and r we can substitute them into the formula
knowing the
How many triangles can be formed
from two given angle measures and
the length of their included side?
None
One
Two
Infinite number
Answer:
B. One
Step-by-step explanation:
Since the two angles are already given, the value of the third angle is already fixed. The third angle can be found by the sum of both angles subtracted from 180. Since 2 angles and lengths are already given, there can only be 1 triangle.
Hope this helps!
If not, I am sorry.
21. Write an equation in point-slope form for the line through the given point with the given slope.
3
(4, -6);m=3/5
Answer:
y + 6 = [tex]\frac{3}{5}[/tex] (x - 4)
Step-by-step explanation:
the equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b ) a point on the line
here m = [tex]\frac{3}{5}[/tex] and (a, b ) = (4, - 6 ) , then
y - (- 6) = [tex]\frac{3}{5}[/tex] (x - 4) , that is
y + 6 = [tex]\frac{3}{5}[/tex] (x - 4)
Karissa is a college basketball player who makes 85% of her free throws. If Karissa takes 94 free throws in the upcoming season, what is the mean of the number of free throws made
The mean of the number of free throws made is 79.9
The standard deviation of throws is 3.46
Karissa is a college basketball player who makes 85% of her free throws. If Karissa takes 94 free throws then,
For binomial distribution B(94,0.85)
n = no. of throws
P = probability of the success
mean = np
= 94*0.85
= 79.9
standard normal = (npq)^0.5
= (94*0.85*0.15)^0.5
= 3.46
the mean of the number of free throws made is 79.9
and standard devation of trows is 3.46
Formula used:mean = np
standard deviation = (npq)^0.5
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Can someone help me with this?
After the storm, the small tree in my neighbor's yard was
leaning. To keep it from falling, we nailed a 6-ft strap into
the ground 2 ft from the base of the tree. We measured 5
feet along the tree and attached the other end of the strap
to the tree. What degree was the tree leaning? Round to
the nearest degree. Enter a number answer only.
Strap
Distance from base of tree
Strap attached this
distance above ground.
The degree the tree was leaning is 70 degrees.
How to find an angle of a triangle?Using cosine law,
c² = a² + b² - 2ab cos C
Therefore,
6² = 2² + 5² - 2 × 2 × 5 cos C
36 = 4 + 25 - 20 cos C
36 = 29 - 20 cos C
36 - 29 = - 20 cos C
7 = - 20 cos C
cos C = 7 / - 20
cos C = -0.35
C = cos⁻¹ 0.35
C = 69.5126848853
C = 70 degrees.
Therefore, the degree the tree was leaning is 70 degrees.
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An Internet service provider allows a certain number of free hours each month and then charges for each additional hour used. Wells, Ted, and Vino each have separate accounts. This month the total hours used by Wells and Ted was 105, and each used all of their free hours. Their total cost was . Vino used 105 hours by himself and had to pay . What is the number of cents charged for each extra hour
The internet service provider charges 40 cents for each extra hour used.
Also, he provides 40 hours of free service for every account.
Solved using linear equations.
Let the number of free hours provided by the internet service provider be x, and the charge for each extra hour be p cents.
Let the time consumed by Wells, Ted, and Vino be t1, t2, and t3 respectively.
Chargeable time used by Wells = t1 - x.
Cost for Wells = p(t1 - x).
Chargeable time used by Ted = t2 - x.
Cost for Ted = p(t2 - x).
Chargeable time used by Vino = t3 - x.
Cost for Vino = p(t3 - x).
Now, we are given that Wells and Ted, in total used 105 hours, that is, t1 + t2 = 105.
The cost for them together is $10 or 1000 cents.
This can be shown as the linear equation:
p(t1 - x) + p(t2 - x) = 1000.
or, p{(t1 - x) + (t2 - x)} = 1000,
or, p{(t1 + t2) - 2x} = 1000,
or, p(105 - 2x) = 1000,
or, p = 1000/(105 - 2x) ... (i).
Time consumed by Vino is given as 105 hours, thus, t3 = 105.
The total cost to Vino is given as $26 or 2600 cents.
This now can be shown as the linear equation:
p(t3 - x) = 2600,
or, {1000/(105 - 2x)}(105 - x) = 2600 {Substituting t3 = 105, and p = 1000/(105 - 2x)}.
This is the required linear equation in one variable.
It can be solved as follows:
{1000/(105 - 2x)}(105 - x) = 2600,
or, 105000 - 1000x = 273000 - 5200x,
or, 5200x - 1000x = 273000 - 105000,
or, 4200x = 168000,
or, x = 168000/4200 = 40.
Substituting x = 40 in (i), we get:
p = 1000/(105 - 2x),
or, p = 1000/(105 - 2(40)),
or, p = 1000/(105 - 80),
or, p = 1000/25,
or, p = 40.
Thus, the internet service provider charges 40 cents for each extra hour, and he provides 40 hours of free internet on every account.
The provided question is incomplete. The complete question is:
"An Internet service provider allows a certain number of free hours each month and then charges for each additional hour used. Wells, Ted, and Vino each have separate accounts. This month the total hours used by Wells and Ted was 105, and each used all of their free hours. Their total cost was $10. Vino used 105 hours by himself and had to pay $26. What is the number of cents charged for each extra hour?"
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Please help
Please help
Please help
Please help
Answer:
57 yd²
Step-by-step explanation:
See image
-8-3k
2
= 11
How do I do this problem?
Answer:
k = - 3 1/6
Step-by-step explanation:
-8-3k(2)=11
-8-6k = 11
8 - 8 - 6k = 11 + 8
-6k = 19
-6k/-6 = 19/-6
k = -3.16667
k = -3 1/6
A triangle can be formed having side lengths $4,$ $5,$ and $8.$ It is impossible, however, to construct a triangle with side lengths $4,$ $5,$ and $10.$ Using the side lengths $2,$ $3,$ $5,$ $7,$ and $11,$ how many different triangles with exactly two equal sides can be formed
14 triangles with exactly two equal sides can be formed
The triangles will be isosceles as there have to be 2 equal sides.
The possible triangles are :
2 2 3 3 3 2 5 5 2 7 7 2 11 11 2
3 3 5 5 5 3 7 7 3 11 11 3
5 5 7 7 7 5 11 11 5
7 7 11 11 11 7
So 14 triangles are possible
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Given: c= 11 and b=5 Then the m
Round to the nearest degree. Enter a number answer only.
Answer:
62.9643082106 degrees
Step-by-step explanation:
First, notice that triangle ABC is a right triangle. This allows us to use SIN, COS, and TAN to find the measure of angle A. Recall SOH CAH TOA, so SIN = OPPOSITE / HYPOTENUSE, COS = ADJACENT / HYPOTENUSE, and TAN = OPPOSITE / ADJACENT.
Looking at angle A, sides c and b correspond to hypotenuse and adjacent respectively. Therefore, we can use COS to set up an equation.
cos(A) = b/c
cos(A) = 5/11
A = arccos(5/11)
A = 62.9643082106 deg
!!!!!! please help!!!!!
select the correct answer from each drop-down menu.
a locker requires a three-digit code to open the lock. the code must contain one letter and two numbers, and no letter or number car
repeated. you can choose from among four letters, a, b, c, and d, and two numbers, 5 and 6.
the size of the sample space is
if a code is chosen at random, the probability that it has a letter that immediately follows an odd number is
if a code is chosen at random, the probability that is in the code but is not in the first position is
The likelihood that it contains a letter just after an odd number is 1/2 . D's likelihood of being in the code but not at the first position is 1/4.
What is probability?The ratio of the number of outcomes in an exhaustive set of equally likely outcomes that produce a given event to the total number of possible outcomes.
A three-digit code is needed to unlock the lock on a locker. One letter and two numbers are required for the code, and neither a letter nor a number may be repeated.
Four letters, A, B, C, and D, as well as two numerals, 5 and 6, are available for selection.
The sample space has a size of (8, 16, 20, and 24)
If a random code is chosen,
The likelihood that it contains a letter after an odd number (1/8, 1/6, 1/3, 2/5, or 2/3)
= 1/2
If a random code is chosen,
Probability (1/8, 1/6, 1/3, 2/5, 2/3) that D is in the code but not at the first position.
= 1/4
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A card is picked at random from a standard deck of cards. what is the sample space for this experiment if you were trying to find p(face card)? a. sample space = 12 b. sample space = startfraction 3 over 13 endfraction c. sample space = startfraction 12 over 52 endfraction d. sample space = 52
The sample space neeeded for the experiment to find the face cards is 52.
Given there is a standard deck of cards.
We have to finf the sample space needed for the experiment of finding the probability of face cards.
Probability is the chance of happening an event among all the events that are possible. It lies between 0 and 1. The probability is the number of items divided by the total items.
Sample is a part of population. It is studied when the study of whole population is difficult to do.
Cards in a deck=52
Number of face cards is 12.
When we draw a card from the deck then it might be a face card or not. So we have to draw all the cards of a standard deck because it might possible that face card is present at the end of deck.
Hence the sample size needed in the experiment is 52.
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Which statements are true for the functions g(x) = x2 and h(x) = –x2 ? Check all that apply.
For any value of x, g(x) will always be greater than h(x).
For any value of x, h(x) will always be greater than g(x).
g(x) > h(x) for x = -1.
g(x) < h(x) for x = 3.
For positive values of x, g(x) > h(x).
For negative values of x, g(x) > h(x).
Answer:
if x=0 then they have same value
1st and 2nd options are out
for x=-1
g(-1)=1
h(-1)=-1
3rd is true
4th
false
for all values except zero, g(x)>h(x)
correct ones are
ANSWER: g(x) > h(x) for x = -1.
For positive values of x, g(x) > h(x).
For negative values of x, g(x) > h(x).
A measure of the strength of the relationship between two variables is referred to as the?
A measure of the strength of the relationship between two variables is referred to as the correlation coefficient.
What is the correlation coefficient?To gauge the strength of the linear link between two variables, correlation coefficients are used.
For a value of correlation coefficient less than zero denotes a negative association, while a value greater than zero denotes a positive relationship.
Zero correlation coefficient means there is no correlation between the two variables under comparison.
A crucial idea in building diversified portfolios that may better resist portfolio volatility is the concept of a negative correlation, often known as an inverse correlation.
Since calculating the correlation coefficient takes time, it is frequently done by entering data into a calculator, computer, or statistics application.
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Find an equation of rational function that has vertical asymptotes at x = 3 and x =
-5, horizontal asymptote at y = 0, and y intercept of 1.
The rational function that meets all the conditions is:
[tex]f(x) = \frac{-15}{(x - 3)*(x + 5)}[/tex]
How to find the rational function?
A rational function is of the form:
[tex]f(x) = \frac{p(x)}{q(x)}[/tex]
As the horizontal asymptote is at y = 0, we know that the numerator can't depend on x, so it is just a constant.
p(x) = a
And we want to have two vertical asymptotes at x = 3 and x = -5, then q(x) becomes zero at these values, so we have:
q(x) = (x -3)*(x + 5)
At this point, the function is:
[tex]f(x) = \frac{a}{(x - 3)*(x + 5)}[/tex]
Finally, we know that the y-intercept is 1, then we need to solve:
[tex]f(0) = 1 = \frac{a}{(0 - 3)*(0 +5)} = \frac{a}{-15} \\\\-15 = a[/tex]
Then we conclude that our function is:
[tex]f(x) = \frac{-15}{(x - 3)*(x + 5)}[/tex]
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Part a: write an algebraic expression for 6 more than 7 times a number. (5 points)
part b: write a verbal expression for 3(n + 8). (5 points)
( will pick brainliest. please help, if i dont get a good grade on this, i might fail. )
Part A
If the number is n, then the expression is 7n+6.
Part B
Three times the sum of a number and 8.
i need help fast for both please
The graph is translated 3 up, reflected across the x-axis, and is narrower than the graph y = x^2.
If the graph is translated 3 up, reflected across the x-axis, and is narrower than the graph y = x², we have; y = -(x² + 3)
How to carry out translation of a function?We are given the original equation of the function as;
y = x²
Now, when we translate the graph 3 units upwards, it means we add 3 units to the function to get;
y = x² + 3
Now, when we reflect across the x-axis, it means we just change the sign of the function to get;
y = -(x² + 3)
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Emily, Dylan and Ryan sat a Maths test.
The test was marked out of 125
Emily got 1/5 of the 125 marks.
Dylan got 15% of the 125 marks.
Ryan got 23 out of 125 marks.
Who got the highest mark?
A satellite television receiver is a parabolic dish with an equation of y=1/32 x^2
Step-by-step explanation:
The equation of a parabola that relates it focus is
[tex] {x}^{2} = 4py[/tex]
So here, we isolate x^2.
[tex]y = \frac{1}{32} {x}^{2} [/tex]
[tex]32y = {x}^{2} [/tex]
Next, we factor out 4.
[tex] {x}^{2} = 4(8)(y)[/tex]
Our p=8 so this tells us the distance of the vertex to the focus.
Solve each triangle – find any missing side and angle measures. Round answers to the nearest tenth.
Answer:
30 degrees
Step-by-step explanation:
180-56-90=34
34 rounded off to nearest tenth is 30
how much will it cost for him to pull the fence around his entire property? Pls help asap this is due in like 2 hrs
Answer:
$1265
Step-by-step explanation:
the area (A) of a rectangle is calculated as
A = length × width
here length = 40 and A = 2800 , then
2800 = 40 × width ( divide both sides by 40 )
70 = width
the perimeter (P) is calculated as
P = 2(length + width) = 2(40 + 70) = 2 × 110 = 220 ft
cost = 220 × $5.75 = $1265
Answer:
$1265
Step-by-step explanation:
area = length × width
area = 2800
length = 40
2800 / 40 = 70
So, the width of the lot is 70ft , and the length is 40
when building a fence, it would surround the entire property's perimeter (which is the length of the outside edges/sides of the shape added together)
so, it would need to cover 70 + 40 + 70 + 40
(the perimeter = 70 + 40 + 70 + 40)
= 220
so, if each foot costs 5.75, we can multiply 220 × 5.75 to find the cost:
220 × 5.75 = 1265
So, this will cost him $1265
hope this helps! have a lovely day :)
what graph represents −3x+1≤10
The solution of the inequality is x ≥ -3 and the graph is shown below
Graph of inequalitiesFrom the question, we are to determine the graph that represents the given inequality
The given inequality is
−3x + 1 ≤ 10
First, we will solve the inequality
−3x + 1 ≤ 10
Subtract 1 from both sides
−3x +1 -1 ≤ 10 - 1
−3x ≤ 9
Divide both sides by -3 and flip the sign
x ≥ -3
The graph of the inequality is shown below
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A supplier bought a scanner for rs 35000 and sold it for rs 47460with 13% vat. Find the profit or loss percent of supplier
The profit percent of supplier is 17.972 %
How to determine the profit or loss percent of supplier?The given parameters are:
Cost price = Rs 35000Selling price = Rs 47460VAT = 13%Start by calculating the selling price without VAT
Selling price = Rs 47460 * (1 - 13%)
Evaluate
Selling price = Rs 41290.2
The percentage profit is then calculated as:
Percentage profit = (Selling price - Cost price)/Cost price * 100%
This gives
Percentage profit = (41290.2 - 35000)/35000 * 100%
Evaluate
Percentage profit = 17.972 %
Hence, the profit percent of supplier is 17.972 %
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Leena consumes 400 calories at breakfast and 350 calories at lunch. She consumes StartFraction 2 Over 3 EndFraction. of her daily calories at dinner. If x represents the calories consumed at dinner, which statements describe the situation? Check all that apply.
Leena consumed 1,500 calories at dinner.
The equation StartFraction 2 Over 3 EndFraction left-parenthesis x plus 400 plus 350 right-parenthesis equals x.(x + 400 + 350) = x can be used to model the situation.
Leena consumed 500 calories at dinner.
The equation StartFraction 2 Over 3 EndFraction left-parenthesis x right-parenthesis equals x left-parenthesis 400 plus 300 right-parenthesis.(x) = x(400 + 300) can be used to model the situation.
Leena consumed 1,000 calories at dinner.
The equation StartFraction 2 Over 3 EndFraction x left-parenthesis x plus 400 plus 350 right-parenthesis equals x.x(400 + 300) = x can be used to model the situation.
The statement is " It was said that the circumstance was represented by the fact that the supper meal has 1500 calories."
Which statements describe the situation?Generally, the equation for Calories consumed is mathematically given as
x = 2/3 of daily calorie
The calories consumed during breakfast and lunch
Cbl=1 - 2/3
Cbl = 1/3
Hence, calories consumed per day
1/3 * cc = 750
cc/3 = 750
cc = 750 * 2
cc= 2250 calories
Calories consumed at dinner
cd= (2250 - (750))
cd= 1500 calories
In conclusion, It was said that the circumstance was represented by the fact that the supper meal has 1500 calories.
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Jeff has 2 hamsters and 1 gerbil. What is the ratio of gerbils to hamsters?
Answer:
1:2
Step-by-step explanation:
Answer:
1:2
Step-by-step explanation: