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Sophie [7]
3 years ago
13

-22.5-7r=9.5 (2.5r+4)

Mathematics
1 answer:
mylen [45]3 years ago
5 0

-22.5-7r=9.5(2.5r+4)\qquad|\text{use distributive property}\\\\-22.5-7r=(9.5)(2.5r)+(9.5)(4)\\\\-22.5-7r=23.75r+38\qquad|\text{add 22.5 to both sides}\\\\-7r=23.75r+60.5\qquad|\text{subtract 23.75r from both sides}\\\\-30.75r=60.5\qquad|\text{divide both sides by}\ -30.75\\\\r=-\dfrac{60.5}{30.75}\\\\r=-\dfrac{6050}{3075}\\\\r=-\dfrac{6050:25}{3075:25}\\\\r=-\dfrac{242}{123}

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gizmo_the_mogwai [7]

Answer:

when y=1 then x=0.5

Step-by-step explanation:

The graph is provided.

The equation y=4x-1 can be graphed by first graphing the -1 which is the y-intercept in the y=mx+b form. 4=m that is our slope. you can find the lines second point by moving 4 up and 1 to the right. rise/run =4/1. So when you move 4 up and 1 right you get another point on the line (1,3).

You can find out x=0.5 when y=1 by just tracing your finger over the graph and the point when y equals 1 the line intercepts x=0.5. Another screenshot is given.

I hope this helps!

8 0
4 years ago
If f(x) = 2x + 4, what is the value of the function
love history [14]

Answer:

14

Step-by-step explanation:

Plug the 5 into the equation

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3 years ago
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Can someone help me write the equations and solve, please.
Novay_Z [31]

Answer:

Number 11: She has to add 5/36 of a cup

Number 12: The present costs $22,2

Number 13: 56,7 pounds is the weight of the package.

Number 14: You started with 40 muffins

Step-by-step explanation:

<u>Number 11</u>: 1/4 = 9/36  and 1/9 = 4/36

3*1/4  -  3*1/9  = 3*9/36  - 3*4/36  = 5/36

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x = 13,32/0,6 = 22,2

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x = 40,5/ (5/7) or 40,5 * 7/5 = 283,5/5 = 56,7

<u>Number 14:</u> 12/x = 3/10 (or 0,30)

x= 12/0,30 = 40

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Cassie is measuring the dimensions of her bedroom wall so that she will know how much paint to buy. which of the choices shown i
Gennadij [26K]
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3 years ago
A right prism has a volume of 65 cubic inches. The prism is enlarged so its height is increased by a factor of 20, but the other
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Answer:

Volume of a right prism = 65 cubic inches

Its height is increased by a factor of 20.

To find:

The new volume of the prism if the other dimensions do not change.

Solution:

The volume of a prism is:

Volume=Bh

Where, B is the base area and h is the height.

A right prism has a volume of 65 cubic inches.

65=Bh

The height of prism is increased by a factor of 20. So, the new volume is:

Volume=B(20h)

Volume=20(Bh)

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The volume of the new prism is 1300 in³.

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