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3 years ago

A right triangle ABC is shown 15 А 8 В What is cos A?

Mathematics

1 answer:

a_sh-v [17]3 years ago

8 0

Just put it in a calculator using the cos button and you should get your answer

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What is the length of the missing leg??

aliina [53]

17^2 - 12^2

289 - 144 = 145

Sqrt of 145 = 12.04159…

The answer rounded to two decimal places is 12.04 cm.

5 0

3 years ago

Read 2 more answers

What is 1 2/3 to the 3rd power

hammer [34]

Answer:

$2\frac{7}{9}$

Step-by-step explanation:

In order to get the answer to this question you must change the mixed number into a improper fraction then multiply the improper fraction as many times as it's exponent.

$1\frac{2}{3} ^3$

Turn the mixed number into a improper fraction:

$1\frac{2}{3} =\frac{5}{3}$

$=\frac{5}{3}^3$

$\frac{5}{3} ^3=\frac{5}{3} \times\frac{5}{3} \times\frac{5}{3}$

Now multiply:

$\frac{5}{3} \times\frac{5}{3} =\frac{25}{9}$

$\frac{25}{9} \times\frac{5}{3} =\frac{75}{27}$

Turn the improper fraction into a mixed number:

$\frac{75}{27} =2\frac{7}{9}$

$=2\frac{7}{9}$

Hope this helps.

5 0

4 years ago

A car at a red light accelerates for 5 seconds and is now travelling 25 m/s. What was the car’s acceleration?

Aleonysh [2.5K]

Answer:

5mph

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

X2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?

s344n2d4d5 [400]

Answer:

a + b =1

Step-by-step explanation:

Write the given quadratic as x^2 – 1x – 90 = 0. This factors into

(x - 10)(x + 9) = 0, and so the roots/solutions are {-9, 10}.

If we call -9 "a" and 10 "b," then the sum a + b is -9 + 10, or a + b =1.

3 0

3 years ago

The exterior angles of a quadrilateral have measures of 72°, 58°, 2xº, and 3xº. Find the value of x.

KatRina [158]

Answer:

Step-by-step explanation:

72 + 58 + 2x + 3x = 360

5x = 230

x = 46

7 0

3 years ago