3 years ago

In 10 mins a heart can 700 times. How many mins will a heart beat 140 times?

1 answer:

3 0

700/10 is 70 so if the heart beats 70 times per minute that means 2 minutes is how long it takes for the heart to beat 140 times

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If a number is decreased by 36 and the result is 76 less than twice the number, what is the number?

olga_2 [115]

A - 36 = B
B = 76 - A * 2.
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A = 40
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3 years ago

If the points (2,3) and (5,y) lie on a line whose slope is -7/6, what does y equal

nlexa [21]

Answer:

Step-by-step explanation:

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4 0

3 years ago

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Maurinko [17]

Answer:

$\frac{7\pi}{4}$ .

Step-by-step explanation:

Given information:

Radius of circle = 8 cm

Area of sector = $56\pi\text{ cm}^2$

Formula for area of sector is

$A=\dfrac{1}{2}\theta r^2$

where, r is radius and $\theta$ is central angle in radian.

Substitute $A=56\pi$ and r=8 in the above formula.

$56\pi=\dfrac{1}{2}\theta (8)^2$

$56\pi=\dfrac{64}{2}\theta$

$56\pi=32\theta$

$\dfrac{56\pi}{32}=\theta$

$\dfrac{7\pi}{4}=\theta$

Therefore, the measure of the sector in radians is $\frac{7\pi}{4}$ .

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3 years ago

Someone please answer! 8th grade math question.

yulyashka [42]

Answer: there is 3 terms

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