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andriy [413]
3 years ago
6

Solve using substitution please help!!

Mathematics
1 answer:
mote1985 [20]3 years ago
5 0

I hope this helps you

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Ne4ueva [31]

Answer:

x ≈ 46.7°

Step-by-step explanation:

Using the sine ratio in the right triangle

sin x = \frac{opposite}{hypotenuse} = \frac{OP}{NP} = \frac{4}{5.5} , then

x = sin^{-1} (\frac{4}{5.5} ) ≈ 46.7° ( to the nearest tenth )

6 0
3 years ago
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Evaluate sin 300° without using a calculator.
Anni [7]

Answer:

-\sqrt{3} /2

Step-by-step explanation:

300 degrees is in the fourth quadrant (it's between 270 and 360); sine is negative in the fourth quadrant.

Given we're in the fourth quadrant, the reference angle is 360 - 300 = 60 degrees

sin(60°) = \sqrt{3} /2

And since sine is negative, this value turns negative:

sin(300°) = -\sqrt{3} /2

3 0
3 years ago
(2x+10)+(2x-30) please help me
Sonja [21]

Answer:

4x-20

Step-by-step explanation:

2x + 2x =4x

10 + (-30) = -20

put it together!

4x-20

(i hope thats the answer form u were asking for) xoxo raina

6 0
3 years ago
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Socks cost $5 per pair.
Morgarella [4.7K]

Answer:

because there is no cents, so its a whole number, and it will help if u put the answer choices

Step-by-step explanation:

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a rectangle has a perimeter of 14 ft write whole-number dimensions for another rectangle with the same perimeter.
Yuki888 [10]

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38 cm

Step-by-step explanation:

Given the rectangle in the diagram, what is the perimeter of the rectangle?

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