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2 years ago

I’m not sure what SOH-CAH-TOA to use

Mathematics

2 answers:

alina1380 [7]2 years ago

8 0

I’m pretty sure it’s CAH

Sladkaya [172]2 years ago

4 0

Answer:

You would use tangent/toa

Step-by-step explanation:

Because at each point you have to find, you have the info for the opposite and the adjacent

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A semicircle has an area of 76.97 squared km. Find it’s radius

shtirl [24]

Answer:

7 km

Step-by-step explanation:

Substitute:

The equation for area of a semi-circle is $\frac{r^{2}\pi }{2}$

A = $\frac{r^{2}\pi }{2}$

76.97 = $\frac{r^{2}\pi }{2}$

Multiply by 2 on both sides:

2(76.97) = ( $\frac{r^{2}\pi }{2}$ )2

153.94 = $r^{2} \pi$

Divide by pi on both sides:

153.94 = $r^{2} \pi$

/pi /pi

49.03 ≈ $r^{2}$

Find the square root:

$\sqrt{49.03} =\sqrt{r^{2} }$

7 = r

7 0

3 years ago

How to find an equivalent fraction of 36/48 with numerator 9

Kobotan [32]

Answer:

9/12

Step-by-step explanation:

You have to divide 36 by 4 to get 9 and then divide 48 by 4 and you will get 12.

6 0

2 years ago

Read 2 more answers

What is the value of x in the equation 3 = 2x? A. 2/3

Alexxandr [17]

3 divided by 2 is 1.5 so c

6 0

2 years ago

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A triangle has vertices at (1,3),(2,-3), and (-1,-1). What is the approximate perimeter of the triangle? A. 16 B: 14 C: 15 D: 10

Brut [27]

Answer:

B 14

explanation:

i did the math

4 0

3 years ago

How do i solve divide 5/8 by 50%

Ede4ka [16]

50% is $\frac{50}{100}$
We have two ways to do this, pick your favor:
either by fractions:
$\frac{5}{8}$ ÷ $\frac{1}{2}$
( $\frac{50}{100} = \frac{1}{2}$
Multiply by the reciprocal of $\frac{1}{2}$ which is 2(flip it)

$\frac{5}{8}$ × 2 = $\frac{5}{4}$ = 1.25

Or change them to decimals:
$\frac{5}{8} = 0.625$
$\frac{50}{100}$ = 0.5

0.625 ÷ 0.5

0.5 I 0.625
multiply by 10 to make it easier to divide(it still gives us the same answer)
0.5 × 10 = 5
0.625 × 10 = 6.25
1.25
5 I 6.25
-5
12
-10
25
-25
0

0.625 ÷ 0.5 = 1.25

7 0

3 years ago