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3 years ago

How do you change a number ti a percentage?

1 answer:

5 0

My teacher taught me to make an imaginary decimal and 0 at the beginning of the number and then move the decimal to the end of the number... idk that may be the wrong way to do it but you can try :/

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3. The angle between two equal sides of an isosceles triangle is 52º.

Naily [24]

Answer:

a) 64° each

b) 15.78 cm

c) 51.78 cm

Step-by-step explanation:

a) (180 - 52)/2 = 64°

b) cos 64 = x/18, x = 7.89, 2x = 15.78 cm

c) 18 + 18 + 15.78 = 51.78 cm

7 0

3 years ago

Which measurements could create more than one triangle?

marysya [2.9K]

Letter A
________________

7 0

2 years ago

Explain why if a runner completes a 6.26.2-mi race in 3434 min, then he must have been running at exactly 1010 mi/hr at least

iren [92.7K]

Answer:

All speed from 0 mi/h and 11 mi/h were reached because the initial and final speed was 0 mi/h the speed of 10 mi/hr was reached at least twice in the race.

Step-by-step explanation:

Given,

Total distance covered = 6.2 miles,

Time taken = 34 minutes = $\frac{34}{60}$ hours

( 1 hour = 60 minutes )

Since,

$Speed = \frac{Distance}{Time}$

Thus, the speed of the runner = $\frac{6.2}{\frac{34}{60}}$

$=\frac{6.2\times 60}{34}$

$=\frac{372}{34}$

= 10.9411764706

≈ 11 miles per hour

Thus, the average speed of the runner is 11 miles per hour ( approx )

By MVT,

The speed was exactly 10 mi/hr at least twice in the race.

By intermediate value theorem,

All speed from 0 mi/h and 11 mi/h were reached because the initial and final speed was 0 mi/h the speed of 10 mi/hr was reached at least twice in the race.

4 0

3 years ago

8313.81=3000(1+r/12)^60 how do you get rid of the exponet

nika2105 [10]

Raise both sides to $\dfrac1{60}$ .

$8313.81=3000\left(1+\dfrac r{12}\right)^{60}$
$\implies8313.81^{1/60}=3000^{1/60}\left(\left(1+\dfrac r{12}\right)^{60}\right)^{1/60}$
$\implies1.162=1.143\left(1+\dfrac r{12}\right)$

$\implies r\approx0.1995$

8 0

3 years ago

Math problem please help me

Taya2010 [7]

Answer:

55 centimeters

Step-by-step explanation:

It is a right triangle which means it will add up to 90 degrees. You would start by adding 20 and 15 which is 35 and then subtract 35 from 90 to get 55. I hope this helped :)

8 0

3 years ago

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