Using proportions, it is found that:
a) The graph for the distance-time journey is given at the end of the answer.
b) The average speed for the whole journey was of 25 miles per hour.
What is a proportion?A proportion is a fraction of a total amount, and equations can be built to find the desired measures in the problem using basic arithmetic operations such as multiplication or division from the rates of the variables.
Proportions are applied to find the relation between velocity, distance and time, as velocity is distance divided by time, that is:
v = d/t.
Then, applying cross multiplication, the distance is given by:
d = vt.
On the first interval of his trip, for the first 15 minutes = 1/4 of an hour, he traveled at a velocity of 40 mph, hence the distance is:
d = 40 x 1/4 = 10 miles.
During the second interval, of 25 minutes, from 15 minutes to 40 minutes, he stopped, hence his distance remained constant at 10 miles.
During the third interval, of 20 minutes = 1/3 of an hour, Tim completed the journey at a velocity of 45 mph, hence the complete distance is given by:
d = 10 + 45 x 1/3 = 10 + 15 = 25 miles.
The graph with these three intervals is given at the end of the answer.
He drove a distance of 25 miles in one hour, hence his average speed is given as follows:
v = d/t = 25/1 = 25 miles per hour.
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Drag and drop the answer into the box to match each point to its coordinates. Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse. Point A Point B Point C
The answer should be dragged and dropped into the box to match each point to its coordinates as follows;
Point A ⇔ (2 1/4 , 1 1/2).
Point B ⇔ (-1 1/4 , 1 1/2).
Point C ⇔ (-2 1/2 , 1/4).
What is an ordered pair?In Mathematics, an ordered pair is sometimes referred to as a coordinate and it can be defined as a pair of two (2) elements or data points that are commonly written in a fixed order within parentheses as (x, y), which represents the x-coordinate (abscissa) and the y-coordinate (ordinate) on the coordinate plane of any graph.
How to identify the coordinates points and quadrants?In Mathematics and Geometry, a quadrant simply refers to the area that is occupied by the values on the x-coordinate (x-axis) and y-coordinate (y-axis) of a cartesian coordinate.
Based on the cartesian coordinate (grid) below, the coordinates points and quadrants should be identified as follows;
Point A ⇔ (2 1/4 , 1 1/2) → quadrant 1.
Point B ⇔ (-1 1/4 , 1 1/2) → quadrant 2.
Point C ⇔ (-2 1/2 , 1/4) → quadrant 2.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
The Smith and Jones manufacturing company keeps a third of its cash in the bank, which pays 0.5% interest, and the other two-thirds in long-term investments that give 3.5% interest. If the company earned a total of $37,500 in interest last year, how much cash did they keep in the bank?
The amount of cash that as kept in the bank is $937500.
How to calculate the amount?Let's have x represent the amount of cash.
One portion of it pays 0.5%, so 0.005x; the other portion pays 3.5%, so 0.035x. This gives us:
0.005x + 0.035x = 37500
Combining like terms:
0.040x = 37500
Solve for x:
x = (37500)/(0.04)
x = 937500
Therefore, the company started with $937,500.
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Your answer 6 points Dawn has 3 1/4 cups of cinnamon. She uses 1/2 cup of cinnamon in each batch of rolls she bakes. How many batches of rolls can Dawn make with the cinnamon she has? 1 5/8.3 7/866 1/2
She uses 1/2 cup in each batch.
So, if she has 3 1/4 cups in total, we have to divide this total by 1/2 to know how many batchs she can make:
[tex]\frac{\text{Total}}{\text{Batch}}=\frac{3+\frac{1}{4}}{\frac{1}{2}}=\frac{\frac{3\cdot4}{4}+\frac{1}{4}}{\frac{1}{2}}=\frac{12+1}{4}\cdot2=\frac{13}{2}=\frac{12}{2}+\frac{1}{2}=6+\frac{1}{2}[/tex]She can make 6 1/2 batches.
A projectile is launched in the air. The function h(t) = -16t^2 + 32t + 128 gives the height, h, in feet, of the projectile t seconds after it is launched. After how many seconds will the projectile land back on the ground?
Help is always greatly appreciated. :)
Answer:
4 seconds
===========================
Given is the
quadratic function
, which has a graph of parabola.
It has two
x-intercepts
, with the greater one representing the
projectile on the ground, at h(t) = 0
.
Let's
solve
the equation:
- 16t² + 32t + 128 = 0
t² - 2t - 8 = 0
t² - 2t + 1 - 9 = 0
(t - 1)² = 9
t - 1 = 3 and t - 1 = - 3
t = 4
and t = - 2
The root with the greater value is
t = 4
, which represents the time we need.
[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]
[tex]\qquad \tt \rightarrow \:4 \:\: sec [/tex]
____________________________________
[tex] \large \tt Solution \: : [/tex]
height of an object projected in air with time is represented by the given equation :
[tex]\qquad\displaystyle \tt \rightarrow \: h(t) = - 16 {t}^{2} + 32t + 128[/tex]
The height when the object hits the ground will be 0
so, just equate the equation with 0, and we will get the value of t (time) when the projectile will be back to ground.
[tex]\qquad\displaystyle \tt \rightarrow \: - 16 {t}^{2} + 32t + 128 = 0[/tex]
[tex]\qquad\displaystyle \tt \rightarrow \: - 16( {t {}^{2} - 2t}^{} - 8) = 0[/tex]
[tex]\qquad\displaystyle \tt \rightarrow \: t {}^{2} - 2t - 8 = 0[/tex]
[tex]\qquad\displaystyle \tt \rightarrow \: t {}^{2} - 4t +2 t - 8 = 0[/tex]
[tex]\qquad\displaystyle \tt \rightarrow \: t(t - 4) + 2(t - 4) = 0[/tex]
[tex]\qquad\displaystyle \tt \rightarrow \: (t - 4)(t + 2) = 0[/tex]
So,
[tex]\qquad\displaystyle \tt \rightarrow \: t = 4 \: \: \: \: or \: \: \: \: t = - 2[/tex]
but since time can't be negative, t = 4 seconds
The object will be back on ground after 4 seconds.
I REALLY NEED HELP PLEASE THIS WORK IS FOR MONDAY.can y’all please help me:(
Answer:
B. the answer is 4
Step-by-step explanation:
Start by dividing miles by gallons.
So for Mitra: Divide 469.8 and 14.5 --- 469.8/14.5= 32.4
For Adira: Divide 355 and 12.5 355/ 12.5 = 28.4
Now, we just subtract the answers to find the difference.
32.4-28.4 = 4.
4 is the difference.
How long is the hypotenuse?
Answer:70 cm
Step-by-step explanation:a^2+b^2=c^2
what is the answer to 9,379-4,312
Answer:
5,067
Step-by-step explanation:
9,379-4,312=5,067
Answer:
5,067
sometimes writing the problem like this
9,379
- 4,312
can help. :)
Determine which integer will make the inequality 4x + 6 < 2x + 12 false.
S:{1}
S:{−1}
S:{4}
S:{−4}
Answer:
s:{4}
Step-by-step explanation:
4(4)+6<2(4)+12
16+6<8+12
32<20
which is the only false one
10. Find the area of the shaded region.
17 yd
5 yd
7 yd
6 yd
7 yd
4 yd
Answer:
176 yd²
Step-by-step explanation:
You want the shaded area of a parallelogram that has a trapezoid-shaped white area.
Parallelogram areaThe area of a parallelogram is given by the formula ...
A = bh
The parallelogram shown has a base of 17 yd and a height of 7 yd +6 yd. Its area is ...
A = (17 yd)(7 yd +6 yd) = 221 yd²
Trapezoid areaThe area of the white space cut from the parallelogram is given by the formula ...
A = 1/2(b1 +b2)h
where b1 and b2 are the parallel bases of the trapezoid, and h is the distance between them.
A = 1/2(7 yd +8 yd)(6 yd) = 45 yd²
Shaded areaThe shaded area is the difference of these two areas:
shaded area = 221 yd² -45 yd² = 176 yd²
The area of the shaded region of the parallelogram is 176 yd².
A student receives the following grades with and A worth 4 points, a B worth 3 point, a C worth 2 points, and a D worth 1 point. What is the students weighted mean grade point score?
B in 2 three-credit classes
D in 1 three-credit class
A in 1 four-credit class
C in 1 four-credit class
Mean grade point is ___
2.33 is the student's GPA using the average weighted mean.
What is Mean?The mathematical average of a group of two or more numbers is called the mean. There are two different types of means that can be calculated: the arithmetic means and the geometric mean. The arithmetic mean is calculated by adding all of the numbers in a set and dividing by the total number of numbers in the set.So, the weighted average is calculated by multiplying each grade by its weight and dividing the result by the total weights.
In three three-credit classes, the student earned three Bs.A D in three-credit course results in a grade of 1, weighted at 3.Consequently, a C earns a grade of 2, which has a weight of 4.Consequently, a C earns a student two credits and a weight of 2.It is as follows:
[tex]M=\frac{3 \times 3 \times 3+1(3)+2(4)+2(2)}{9+3+4+2}=\frac{12}{18}=2.33[/tex]
Therefore, 2.33 is the student's GPA using the average weighted mean.
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Question
Suppose J=[−1428].
What is the value of ∣∣J∣∣?
Enter your answer in the box.
Answer: |J|= -16
Step-by-step explanation:
The value of ∣J∣ is -16.
What is matrix?A collection of numbers lined up in rows and columns to form a rectangular array is called a matrix. The elements, or entries, of the matrix are the numbers.
Given:
[tex]J = \left[\begin{array}{ccc}-1&4\\2&8\end{array}\right][/tex]
To find the value of ∣J∣:
We have to find the determinant of matrix J.
Multiply the numbers along the diagonal from top-left to bottom-right.
Multiply the numbers along the diagonal from bottom-left to top-right.
The second product is subtracted from the first.
Get the 2-by-2 determinant's value via simplifying.
∣J∣ = {(-1x8) - (2x4)}
∣J∣ = {-8 - 8}
∣J∣ = -16
Therefore, the value of ∣J∣ is -16.
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Diane deposits the same amount of money into a bank account every month. The table below shows the amount of money in the account after different amounts of time.
Giv the table below:
Time (Months) 6 8 10 12
Money (Dollars) 476 606 736 866
(a) We are asked to find the amount that is alreafy in the account when Diane started depositing.
The amount that will be in the account before Diane started depositing will be
86 dollars.
(b) To get the rate if the money increase or decrease:
606 - 476
2
= 130/2
= 65
The money increases by 65
Yasmin is taking a multiple choice test with a total of 20 points available. Each question is worth exactly 1 point. What would be Yasmin's test score (out of 20) if she got 2 questions wrong? What would be her score if she got x questions wrong?
Answer:
• score with two questions wrong = 18
• score with x questions wrong = (20 - x)
Step-by-step explanation:
The question is divided into two parts.
The first part asks us to calculate the marks that would be scored out of 20 if someone got 2 questions wrong. To do this we simply have to subtract 2 from 20 to get the score:
score = 20 - 2
= 18
Therefore, Yasmin's score would be 18.
The second part asks us to calculate the marks that would be scored if someone got x questions wrong instead. As we did in the first part, we have to take away x from 20 in order to get the score:
score = 20 - x,
where x can be any whole number.
Therefore, Yasmin's score would be (20-x).
find the upper and lower bounds of the total weight of 3 boxes each weighing 5.7 kg to the nearest 0.1kg
Answer:
while using a calculator we need it for solving problems and practice and analysis of reference to be able to answer
Step-by-step explanation:
according to which unit are we calculating
Torque is a measure of how much to tighten a bolt. The torque specification for a
small-block Chevy V8 is 70 foot-pounds with an error of 0.02 foot-pounds. Write
and solve an absolute value equation to find the minimum and maximum torque
required for the bolts.
The absolute value equation is |x - 70| = 0.02, while the minimum and maximum torque are 69.98 and 70.02 foot pounds
How to determine the absolute value equation?From the question, the given parameters are:
Specification = 70 foot pounds
Margin of error = 0.02 foot pounds
The absolute value equation of the scenario is then calculated as
|x - Specification| = Margin of error
Substitute the known values in the above equation
So, we have
|x - 70| = 0.02
Solving the equation, we have
x - 70 = 0.02 and x - 70 = -0.02
Add 70 to all sides
x = 70.02 and x = 69.98
Hence, the range is 69.98 to 70.02
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Please help me!! I was absent when class learned this but teacher is still making me do homework!!! I have no idea how to do this!! Please help!! Need now!!
Answer:
a. (2x−9)(x+3)
b. (2x+11)(2x−11)
c. (3x−2)(2x+5)
d. (3x+4)(x+1)
e. (5x+3)(x−9)
f. (2x+5)(2x−7)
g. 4(3x+5)(3x−5)
h. 3(2x+5)(2x+5)
Step-by-step explanation:
Answer:
Lol, I recommend you ask your teacher later how to factor :]
It's kinda hard to explain. Tell me if I got any wrong :]
Step-by-step explanation:
Ouch. Well, here I go:
a) (2x-9)(x+3)
b) (2x-11)(2x+11)
c) (3x-2)(2x+5)
d) (x+1)(3x+4)
e) (x-9)(5x+3)
f) (2x-7)(2x+5)
g) (6x-10)(6x+10)
h) (6x+15)(2x+5)
:]
please help asap for 50 points. The Smith and Jones manufacturing company keeps a third of its cash in the bank, which pays 0.5% interest, and the other two-thirds in long-term investments that give 3.5% interest. If the company earned a total of $37,500 in interest last year, how much cash did they keep in the bank?
Based on the calculation below, the amount of cash that the Smith and Jones manufacturing company kept in the bank was $500,000.
How do we calculate amount kept in the bank?Let x represents the amount of cash that Smith and Jones manufacturing company has.
Therefore, we have:
Interest amount from bank = Cash * A third * Bank interest rate = x * (1/3) * 0.5% = x0.0017
Interest amount from long-term investments = Cash * Two-third * Long-term investments interest rate = x * (2/3) * 3.5% = x0.023
Total interest earned = Interest amount from bank + Interest amount from long-term investments = $37,500 ...................... (1)
Substituting all the relevant values into equation (1) and solve for x, we have:
x0.0017 + x0.023 = $37,500
x0.025 = $37,500
x = $37,500 / 0.025
x = $1,500,000
Amount kept in the bank = Cash * A third = $1,500,000 * (1 / 3) = $500,000
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What is the probability of obtaining a sum of at least nine when rolling a pair of dice (enter the probability as a fraction )
Total number of possible outcomes:
[tex]6\cdot6=36[/tex]From those 36 possible outcomes the next 10 sum of at least 9 ( a number greather than or equal to 9):
[tex]\lbrace(3,6),(4,5),(4,6),(5,4),(5,5),(5,6),(6,3),(6,4),(6,5),(6,6)\rbrace[/tex]Then, the probability of obtaining a sum of at least nine when rolling a pair of dice is:
[tex]P=\frac{10}{36}=\frac{5}{18}[/tex]896 X 4
Two answers
Answer:
3584
Step-by-step explanation:
[tex]896[/tex]×[tex]4[/tex] =[tex]3584[/tex] (refer as table of 896).
hope it help :)
simplify - (5+√2) (3+√5)
Greg charges a flat fee of $140 to mow a lawn plus $45 and hour. Greg charges a flat fee of 100 to mow the lawn plus $25 an hour. After how many hours do they make the same amount
We need to know how to write linear equation to solve the problem. The number of hours when they make the same amount is 2 hours.
Linear equation is when a value of one variable is dependent on only one other variable. In the given question we know that Greg charges a flat fee of $140 and another $25 for every hour and Greg charges a flat fee of $100 and $45 for every hour. We need to find out the number of hours when both of them have the same amount, we can consider number of hours to be x and form equations accordingly.
140+25x=100+45x
20x=40
x=2
Therefore both of them will make the same payment when number of hours is 2.
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A student writes the inequality representing the graph as y ≥ –2(x – 10)2 + 200.
The inequality is
because testing the point (5, 100) simplifies to the inequality
Answer:
A student writes the inequality representing the graph as y ≥ –2(x – 10)2 + 200.
The inequality is
✔ incorrect
because testing the point (5, 100) simplifies to the inequality
✔ 100 ≥ 150
.
Step-by-step explanation:
A student writes the inequality representing the graph as y ≥ –2(x – 10)2 + 200.
The inequality is
✔ incorrect
because testing the point (5, 100) simplifies to the inequality
✔ 100 ≥ 150
.
The inequality is incorrect because testing the point (5, 100) simplifies to the inequality 100 ≥ 150.
What is an inequality?An inequality can be defined as a mathematical relation that is typically used for comparing two (2) or more numerical data and variables in an equation based on any of the following arguments (symbols):
Greater than (>).Greater than or equal to (≥).Less than (<).Less than or equal to (≤).Next, we would evaluate and simplify the given inequality in order to determine its solution as follows:
y ≥ –2(x – 10)² + 200.
At point (5, 100), we have:
100 ≥ –2(5 – 10)² + 200.
100 ≥ –2(-5)² + 200.
100 ≥ –2(25) + 200.
100 ≥ –50 + 200.
100 ≥ 150 (incorrect and false).
In conclusion, the given inequality is incorrect because 100 cannot be greater than or equal to 150.
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Compete Question;
A student writes the inequality representing the graph as y ≥ –2(x – 10)² + 200.
The inequality is ______ because testing the point (5, 100) simplifies to the inequality _____.
Write a function store_digits that takes in an integer n and returns a linked list where each element of the list is a digit of n.
def store_digits(n):
"""Stores the digits of a positive number n in a linked list.
>>> s = store_digits(1)
>>> s
Link(1)
>>> store_digits(2345)
Link(2, Link(3, Link(4, Link(5))))
>>> store_digits(876)
Link(8, Link(7, Link(6)))
"""
"*** YOUR CODE HERE ***"
1 = Link.empty
while n > 0:
1 = Link(n % 10, 1)
n //= 10
return 1
Store Digits
In some programming languages you have to declare a variable before using them or define the information that will be stored in it, e.g., a number. However, in Python we just need to type the name of our variable, followed by an equals sign and a value to assign to it.
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1. Find the value of x and the perimeter of the square.
2X
7x - 15
A square has 4 congruent side lengths. This means that each side will be the same length. Therefore, we can set the two lengths equal to each other.
[tex]S=S[/tex]
[tex]7x-15=2x[/tex]
Isolating a variable: rearranging an equation so that the variable is by itself
done by performing inverse operations3 Step Solving process:
1. Collect like terms
2. Perform inverse operations
3. Simplify if necessary
[tex]7x-2x-15=0[/tex]
[tex]5x=15[/tex]
[tex]\frac{5x}{5}=\frac{15}{5}[/tex]
[tex]x=3[/tex]
The value of x = 3
The perimeter can be found by adding all of the side lengths. A square has 4 sides.
a + a + a + a = P
However, we know that a square has congruent sides so we can manipulate this formula:
4a = P - where a is equal to the side length
Using a previous equation we know that a side length is equal to 2x and we know the value of x, to be 3. Therefore, a side length must be 6.
we can now input the value of the side length into the formula.
[tex]4(6)=P[/tex]
[tex]24=P[/tex]
The perimeter of the square is 24.
a newborn kitten weights about 1/4 pound. There are 0.45 kilograms in 1 pound. If a mother cat has a litter of 6 kitten. What is the approximate total weight of the litter of 6 kittens in kilograms.
The approximate total of weight of the litter of 6 kittens 0.675kg
What is Weight ?
The force exerted on an object by gravity is known as its weight. The gravitational force acting on the item is referred to as weight in several common textbooks. Some people refer to weight as a scalar quantity that measures the gravitational force's strength.
Given,
The weight of one newborn kitten = 1/4 pounds
The value of pound in kilograms = 1pound = 0.45kg
convert the weight from pound to kilograms = 1/4 x 0.45
= 0.1125kg
Now, to find out total weight of litter of 6 kitten in kilograms
= 0.1125 x 6
= 0.675kg
Hence, The approximate total weight of the litter of 6 kittens in kilograms is 0.657kg
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(3+5),2y=(5x8)-(2x4)
Answer:
Answer down below!
Step-by-step explanation:
y = 2
A certain video game console uses 154 watt-hours of energy each hour.
The console used 276 hours last year.
How many watt-hours of energy did the console use?
***Show the equation you used to solve this problem.
Use any method to solve this problem. You must show all your work.
By taking a product, we can see that the total energy consumed by the console is 42,504 watt-hours.
How many watt-hours of energy the console used?Here we know that the console uses 154 watt-hours of energy each hour.
So, if you use it for x hours, the energy consumed is given by the product:
E = ( 154 watt-hours)*x
In this case, we know that the console is used for 276 hours, then we can write:
E = (154 watt-hours)*276 = 42,504 watt-hours.
Which is the product between the hourly consumption and the number of hours used.
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Nine years from now, Jack will be three times as old as he was eleven years ago. How old is he now?
Answer:
John is 16 years old now.
Check:
1) 16+5 = 21
2) 16-9 = 7
3) 21 = 7*3
Step-by-step explanation:
Hope it helps! =D
I REALLY NEED HELP PLEASE!!!!!!!!!!!!!!!!!!!!!
The area of the rectangles A,B, C are 8 cm , 3cm and 15 cm , whereas the area of the enlarged rectangle A,B,C are 32 cm ,12 cm and 60cm
The relation between the area of the both original and the enlarged is the area of the enlarged rectangle is 4 times the area of the original rectangle.The problem we are dealing with is area what is referred to as the amount of space occupied by a two-dimensional figure, it is the amount that measures the number of unit squares that surround the surface of a closed figure. The standard unit of the region is square units which are generally spoken to as square inches, square feet. For the area of the rectangle we multiply the length of the rectangle by the width of the rectangle.
Area= l x b
for rectangle A : 4 x2 = 8 cm, for B : 3 x 1 = 3 cm and for C: 5 x 3 = 15 cm
As we increase each dimension by 2 times:
For the enlarged rectangle A : 8 x4 = 32 cm ,B : 6 x 2 = 12 cm and C: 10 x 6 = 60 cm .
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All side lengths of ΔJKL equal 2 units. A transformation maps ΔJKL to ΔJ'K'L'. The length of side J'K' is 5 units. Is this a rigid transformation?
No, there is no one-to-one mapping of all the points of the pre-image to the image.
No, at least one segment length is not preserved, making this a nonrigid transformation.
Yes, the vertices of the pre-image map to the vertices of the image.
Yes, all of the side lengths of the pre-image are proportionate to the image.
Answer: No, at least one segment length is not preserved, making this a nonrigid transformation.
Step-by-step explanation: A rigid transformation implies that both the shape and size are not changed. The second answer is right because the length of segment JK (2 units) is not preserved when mapped onto J'K' (5 units).