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3 years ago

In 10 minutes a heart can beat 700 times at this rate how many minutes will it take it for the heart to beat 140 times

1 answer:

3 0

We can figure out how many times a heart beats in one minute (so we can figure out how many minutes it will take for 140 times) by dividing 700 by 10. This gives us 70. Now we know that a heart beats 70 times each minute. Now we know it would take 2 minutes for a heart to beat 140 times because 70×2=140.

Two minutes is the answer.

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Ar if and Keisha go to a restaurant for dinner.Their meals total $13.75 the tax is 5% how much tax is added to the bill?

Jlenok [28]

0.6875 if i am wrong i am sorry

8 0

3 years ago

Kevin rode 24 km in 2 hours. At that rate, how long would it take him to ride 120 km?

liberstina [14]

24/2=12 so you would do 120/12 and get 10. Your answer is 10 hours.

6 0

3 years ago

HELPPP ME OUTTTT!!!!!

ryzh [129]

Answer:

Measure of the unknown angle is 21°.

Step-by-step explanation:

In the given question,

Measure of opposite side and the measure of hypotenuse have been given.

Therefore, we will use the trigonometric ratio for the unknown angle which has the ratio of opposite side and the hypotenuse.

$\text{sin}\theta=\frac{\text{Opposite side}}{\text{Hypotenuse}}$

$=\frac{13}{36}$

$=0.36111$

$\theta \approx \text{sin}^{-1}(0.36111)$

$\theta \approx 21.17$

$\theta \approx 21^{\circ}$

Therefore, measure of the unknown angle is 21°.

3 0

3 years ago

The Ortiz family will travel from Indianapolis to Denver this summer. The driving distance between the two cities is 1,058 miles

lakkis [162]

<span>A. Write and solve an algrebraic equation to find out how many gallons of gas they will use. Explain your steps.

let x = gallons of gas they will use
y = distance traveled

x = y/20
x = 1058/20 = 52.9 gallons of gas

B. Write and solve an algebraic equation to find out how many miles they will travel.

</span>let x = distance traveled
y = gallons of gas used

x = 20y
x = 20(52.9)
x = 1058 miles

Hope this helps. Have a nice day.

7 0

3 years ago

Solve (x-2<5) u (x+7>6)

grin007 [14]

x= | 1 < x < 3

x + 2 < 5 and x - 7 > -6

x < 5 - 2 and x > -6 + 7

I don't know if I am 100% right.

4 0

3 years ago