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3 years ago

ANSWER ASAP!!!!! 10 POINTS + BRAINLIEST!!!!!!!!

Mathematics

2 answers:

SOVA2 [1]3 years ago

4 0

Answer:

4:1 ( i think)

Step-by-step explanation:

We can solve for a and b using substitution

a-b=3

a+b=5

solve and get that a=4 b=1

Which means that it's a 4:1 ratio

earnstyle [38]3 years ago

3 0

The answe is 4:1 ==>

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Calculate cos(480°) and sin(480°).

hram777 [196]

Answer:

$\cos(480^\circ)=-\dfrac{1}{2}$

$\sin(480^\circ)=\dfrac{\sqrt{3}}{2}$

Step-by-step explanation:

Calculate the value of trigonometry function.

$\cos(480^\circ)$ and $\sin(480^\circ)$

Split the angle between 0 to 90° using trigonometry formula.

$\Rightarrow \cos(360^\circ+120^\circ)$

$\Rightarrow \cos(120^\circ)$ $\because \cos(360+\theta)=\cos\theta$

$\Rightarrow \cos(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow -\cos(60^\circ)$ $\because \cos(180-\theta)=-\cos\theta$

$\Rightarrow -\dfrac{1}{2}$

Therefore, cos(480°) = -0.5

$\Rightarrow \sin(360^\circ+120^\circ)$

$\Rightarrow \sin(120^\circ)$ $\because \sin(360+\theta)=\sin\theta$

$\Rightarrow \sin(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow \sin(60^\circ)$ $\because \sin(180-\theta)=\sin\theta$

$\Rightarrow \dfrac{\sqrt{3}}{2}$

Therefore, sin(480°) = 0.866

7 0

4 years ago

A music store orders wooden drumsticks that weigh 96 grams per pair. The total weight of the box of drumsticks is 782 grams. How

Nikolay [14]

Hi there! The answer is 6.

The box including the drumsticks has a weight of 782 grams.
The box itself has a weight of 206 grams.
Therefore the drumsticks in the box have a weight of 782 - 206 = 576 grams.

Each drumstick has a weight of 96 grams.
The total amount of drumsticks have a weight of 576 grams.
Therefore there are 576 / 96 = 6 drumsticks in the box.

6 0

3 years ago

Read 2 more answers

HELP ME ASAP PLEASEEEEEEEEEEE (っ °Д °;)っ

gtnhenbr [62]

Answer:

123 is not a multiple of 9, while all others are

99 is a multiple of 11, while all others are not

3 0

3 years ago

laura bought a square canvas to paint a picture of her cat. one side measures 22 centimeters. what is the area of canvas.

Nikitich [7]

If we know that Laura's canvas is square, and one side is 22cm,

area of a square is l*w, with a special case of l=w

the area will be
A= l*w=22*22=484cm^2

also, Asquare is=l^2

4 0

3 years ago

Read 2 more answers

(picture here)

jeka94

Answer:

Option A.

Step-by-step explanation:

1. BC ║ ED [Given}

2. m∠ABC = 70° [Given}

3. m∠CED = 30° [Given]

4. m∠ABC = m∠BED [Corresponding angle theorem]

5. m∠BEC + m∠CED = m∠BED [Angle addition postulate]

6. m∠BEC + 30° = 70° [Substitution property of equality]

7. ∠BEC = 40° [Subtraction property of equality]

Therefore, option A is the answer.

8 0

3 years ago

Read 2 more answers