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3 years ago

Given cos A 0.42, find angle A in degrees. Round your answer to the nearest hundredth.

Mathematics

2 answers:

kow [346]3 years ago

5 0

Answer:

Step-by-step explanation:

22.78.................................

k0ka [10]3 years ago

4 0

Answer:

A = 65.17

Step-by-step explanation:

Cos A = .42

Take the inverse cos of each side

arccos cosA = arccos .42

A = 65.16541251

To the nearest hundredth

A = 65.17

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kondaur [170]

This problem is about ratios.

$\frac{height}{shadow} = \frac{5ft \:}{11ft} = \frac{x}{110}$

Solve for X

$x = \frac{5 \times 110}{11} = 50ft$

The tree is 50ft tall.

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3 years ago

3 part question

eimsori [14]

Answer:

^62 with a numertor of 66 you divide by .21

Step-by-step explanation:

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3 years ago

Match each power of a power expression with its simplified expression.

VARVARA [1.3K]

Answer:

> $(4^6)^{-3}$ = $\frac{1}{4 ^ {18}}$

> $(4^{-3})^{-3}$ = $4 ^ 9$

> $(4^0)^{-9}$ = $4 ^0$

> $(-4^{-9})^2$ = $(-4) ^ {-18}$

Step-by-step explanation:

We have to expand the powers of each of them:

> $(4^6)^{-3}$ = $4^{(6 * -3)}$

= $4 ^ {-18}$

$(4^6)^{-3}$ = $\frac{1}{4 ^ {18}}$

> $(4^{-3})^{-3}$ = $4 ^ {(-3 * -3)}$

$(4^{-3})^{-3}$ = $4 ^ 9$

> $(4^0)^{-9}$ = $4 ^ {(0 * -9)}$

$(4^0)^{-9}$ = $4 ^0$

> $(-4^{-9})^2$ = $-4 ^ {( -9 * 2)}$

$(-4^{-9})^2$ = $-4 ^ {-18}$

8 0

3 years ago

Read 2 more answers

Sean bought 1.8 pounds of gummy bears and 0.6 pounds of jelly beans and paid $10.26. He went back to the store the following wee

Ymorist [56]

Answer:

Gummy bears $3.20/lbs

Jelly beans $7.50/lbs

Step-by-step explanation:

For this we will substitute gummy bear price for "x" and jelly bean price for "y" which creates this system (also assuming there is no sales tax involved):

1.8x + 0.6y = 10.26

1.2x + 1.5y = 15.09

Then once solved, answers come out to be (x,y) = (16/5,15/2) which is (3.2,7.5)

7 0

3 years ago

Use the equation n= b-4 to find the value of n when b=9

Valentin [98]

Put 9 in for b

N=9-4

N=5

6 0

3 years ago