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3 years ago

11

Contestants in a dance-a-thon rest for the same amount of time every hour. A couple rests for 15 minutes in 3 hours. How long di

d they rest in 7 hours?

1 answer:

motikmotik3 years ago

3 0

Answer:

35 Minutes

Step-by-step explanation:

15 minutes divided by 3 hours = 5 minutes an hour

7 x 5 = 35

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Find the distance between (2a+2, 2b) and (2b+2, 2a), given that a>b.

Elina [12.6K]

Answer:

Distance = $2\sqrt{2}a-2\sqrt{2}b$

Step-by-step explanation:

We will use distance formula shown below to solve this:

Distance Formula: $\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}$

Where

x_1 = 2a + 2

y_1 = 2b

x_2 = 2b+2

y_2 = 2a

Substituting, we solve for the expression for distance:

$D=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\D=\sqrt{(2a-2b)^2+((2b+2)-(2a+2))^2}\\D=\sqrt{(2a-2b)^2+(2b+2-2a-2)^2}\\D=\sqrt{(2a-2b)^2+(2b-2a)^2}\\D=\sqrt{4a^2 -8ab+4b^2+4b^2-8ab+4a^2}\\D=\sqrt{8a^2-16ab+8b^2}\\D=\sqrt{(2\sqrt{2}a-2\sqrt{2}b)^2}\\D=2\sqrt{2}a-2\sqrt{2}b$

This is the expression in terms of a, and b, given a > b

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3 years ago

In rectangle GRAM below GA =4×+17 and MR= 7x-4 find the value of x and the lenghts of GA MR

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Answer: x=7, GA=MR=14

Step-by-step explanation:

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2 years ago

What is 8(y+2) thank you whoever answers this

Grace [21]

8y + 16

Used the distributive property to solve.,

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4 years ago

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katovenus [111]

Answer:

16

Step-by-step explanation:

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3 years ago

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Stells [14]

[1] Amount of water per minute
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Watersaver: m = 2.5 gal/min
Waterstream: m = 1.5 gal/min

[2] Equations:
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Watersaver: y = 2.5x
Waterstream: y = 1.5x

[3] For 6,8,10, and 12 minutes:
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