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3 years ago

X+(x-10)=26 5,12,15,18

Mathematics

1 answer:

Likurg_2 [28]3 years ago

3 0

Answer: 18

Step-by-step explanation:

put each number in place of x and finish the equation. you will find that 5, 12, and 15 don’t work because they just simply don’t add up.

finally, put 18 in place of x.

18 + (18 - 10) = 26

18 + 8 = 26

26 = 26 ✔️

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Step-by-step explanation:

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3 years ago

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Find sin(2x), cos(2x), and tan(2x) from the given information.

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Since $\cot(x)=\frac{2}{3}$ and $\cot^{2} x+1=\csc^{2} x$ , we know that:

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Using the double angle formula for sine, $\sin(2x)=2\left(\frac{3}{\sqrt{13}} \right)\left(\frac{2}{\sqrt{13}} \right)=\boxed{\frac{12}{13}}$
Using the double angle formula for cosine, $\cos(2x)=1-2\left(\frac{3}{\sqrt{13}} \right)^{2}=\boxed{-\frac{5}{13}}$
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2 years ago

What is the value for y?<br><br><br><br> Enter your answer in the box.<br><br> y =

DerKrebs [107]

Angle sum of a triangle = 180°

Type of Triangle: Isosceles.
Therefore, 2 of the angles are equivalent.

2x = 50
2 ( 25 ) = 50
50 = 50

Meaning that the sum of the 2 angles is 100°.

( 5y + 10 ) + 2x + 50 = 180
5y = 180 - 100 - 10
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y = 70 / 5
y = 14°

ANSWER:
y = 14°

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4 years ago

11. Which expression is equivalent to

s344n2d4d5 [400]

Answer:

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Step-by-step explanation:

$8x−2y+x+x \\ 9x−2y+x \\ 10x−2y$

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