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2 years ago

Y-x=17 y = 4X+2 Help me out rn!!!!

Mathematics

2 answers:

sergey [27]2 years ago

6 0

Answer:

4x+2-x=17

3x+2=17

3x=17-2

3x=15

x=5

Lena [83]2 years ago

3 0

X=5 because you plug in the y into the equation y-x=17

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One angle is 25° bigger than another angle. the two angles are supplementary. what is the measure of the two angles

Rama09 [41]

1st angle - x⁰
2nd angle - (x+25)⁰
The angles are supplementary,
so
x+x+25=180
2x=155
x=77.5⁰ -1st angle

77.5+25=102.5⁰ - 2nd angle

3 0

3 years ago

Cos(−θ)=√3/3, sinθ<0

Delicious77 [7]

Answer:

$\sin\theta=-\frac{\sqrt{6}}{3}$

Step-by-step explanation:

The given trigonometric equation is $\cos(-\theta)=\frac{\sqrt{3} }{3}$ .

We can either use the Pythagorean identity or the right angle triangle to solve for $\sin\theta$ .

According to the Pythagorean identity,

$\cos^2\theta+\sin^2\theta=1$

Recall that, the cosine function is an even function, therefore

$\cos(-\theta)=\cos(\theta)$

$\Rightarrow \cos(\theta)=\frac{\sqrt{3} }{3}$ .

We substitute this value in to the above Pythagorean identity to get;

$(\frac{\sqrt{3}}{3})^2+\sin^2\theta=1$

$\Rightarrow \frac{3}{9}+\sin^2\theta=1$

$\Rightarrow \sin^2\theta=1-\frac{3}{9}$

$\Rightarrow \sin^2\theta=\frac{6}{9}$

$\Rightarrow \sin\theta=\pm \sqrt{\frac{6}{9}}$

$\Rightarrow \sin\theta=\pm \frac{\sqrt{6}}{3}$

But we were given that,

$\sin\theta\:$ , so we choose the negative value.

$\Rightarrow \sin\theta=-\frac{\sqrt{6}}{3}$

The correct answer is B

7 0

3 years ago

A train that travels 30 miles in 1/3 hour at a constant speed is going faster than a train that travels 20 miles in 1/2 hour at

alexdok [17]

Answer:

The train going 30 miles in 1/3 hour is going faster than the other train.

Step-by-step explanation:

Calculate each rate by dividing the distance traveled by the amount of time it takes to cover that distance:

30 / (1/3) = 90 mph

20 / (1/2) = 40 mph

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2 years ago

Find the measure of z.

liraira [26]

I think it would be 120

8 0

2 years ago

Read 2 more answers

Ariel is working at meat -packing plant 5 night a weak .Her regular wage is $11 an hour.She earns time and a half for any overti

Bond [772]

Answer:

$148.50.

Step-by-step explanation:

Hourly wage for time and a half = 11 * 1.5

=$16.50

For 9 hours she earns 16.50 * 9

= $148.50.

4 0

2 years ago