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Lapatulllka [165]
3 years ago
7

Keith exercises x hours a week. troy exercises three hours less than keith and joe exercises two times more than troy. which exp

ression represents the amount of time joe exercises?
a.2(3x)
b.2x - 3
c.2x + 3
d.2(x - 3)
Mathematics
1 answer:
Alecsey [184]3 years ago
4 0
That   would be d.

Keith exercises x - 3 hours  and 2 tines this is 2(x - 3)
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Well, a way to do this problem would be to find the set of numbers that all of rational square roots. A list of perfect squares would be 1^2=1, 2^2=4, 3^2=9, 4^2=16, 5^2=25, 6^2=36, 7^2=49, 8^2=64, 9^2=81, 10^2=100.
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3 years ago
The scale of a map uses 10 cm for 30 km.<br> How many centimeters does it use for 9 km?<br> +
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Answer:

3 km

Step-by-step explanation:

30 divided by 10 is 3.

9 divided by 3 is 3.

Therefore, your answer is 3.

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2 years ago
Watch help video
Evgen [1.6K]

Answer:

20 dimes and 2  quarters

Step-by-step explanation:

x = number of dimes

y  = number of quarters

minimum is greater than or equal to ≥

x+y ≥16

no more than is less than or equal to ≤ ,

value of dime is $ 0.10

value of quarter is $0.25 so

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y ≥16 - x

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y≤12 - 0.4x

Graph system: see file

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3 years ago
Cone A has a radius of 2 inches and a height of 3 inches. In cone B, the height is the same, but the radius is doubled. Calculat
wlad13 [49]

Answer: Option C.

Step-by-step explanation:

Use the formula for calculate the volume of a cone:

V=\frac{1}{3}\pi r^2h

Where r is the radius and h is the height.

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V_A=\frac{1}{3}\pi (2in)^2(3in)=12.56in^3

Volume of the cone B:

If the height of the cone B and the height of the cone A are the same , but the radius of the cone B is doubled, then its radius is:

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Then:

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Divide V_B by V_A:

\frac{V_B}{V_A}=\frac{50.26in^3}{12.56in^3}=4

Therefore: When the radius is doubled, the resulting volume is 4 times that of the original cone.

5 0
3 years ago
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Answer:

What is the equation?

Step-by-step explanation:

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