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3 years ago

PRECAL PLEASE HELP

Mathematics

1 answer:

pav-90 [236]3 years ago

5 0

Answer:

ANSWER = "D"

Step-by-step explanation:

A ∪ B = eliminates answer B/C

C ∩ D = eliminates A

ANSWER = "D"

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The measure of angle A to the nearest tenth of a degree is: A 18.5 B 19.5 C 20.5

Andrew [12]

Answer:

Step-by-step explanation:

This is a right triangle as shown by the right angle.

The side opposite the right angle is the hypotenuse, which is 9.
The side opposite angle A is 3.

So we have the opposite of A and the hypotenuse.

The trigonometric ratio that relates opposite side to hypotenuse is SINE.

$sin\theta=\frac{opposite}{hypotenuse}$

Since, we need angle A, $\theta$ is A, opposite side is 3, and hypotenuse is 9, we substitute:

$sinA=\frac{3}{9}\\sinA=\frac{1}{3}$

To solve for the angle, we use our calculator and find the inverse sin of $\frac{1}{3}$ :

$A=sin^{-1}(\frac{1}{3})\\A=19.47$

Rounding to nearest tenth of a degree:

$A=19.5$

B is the right choice.

6 0

3 years ago

What is the slope of a horizontal line through (5,-6)

katrin2010 [14]

Answer:

y=-6 that would be it. remember slope is rise over run

5 0

3 years ago

There are 100 cents in a dollar. what fraction of a dollar is 17 cents

7nadin3 [17]

The fraction would be 17/100

4 0

3 years ago

Read 2 more answers

What is the length of the hypotenuse with the given vertex (-5,0)? I

Margaret [11]

Answer:

5000 square ft

Step-by-step explanation:

4 0

3 years ago

What is the length of leg s of the triangle below?

vekshin1

Answer:

4 units

Step-by-step explanation:

Let ABC be isosceles right angled ∆ right angled at B

By Pythagoras theorem,

AC² = AB² + BC²

(√32)² = 4² + s²

32 = 16 + s²

s² = 32 - 16

s² = 16

s = √16

s = 4 units.

Therefore s = 4 units

Hope it helps...

6 0

3 years ago