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Veseljchak [2.6K]

3 years ago

9

Solve for y and keep in simplest radical form

1 answer:

kumpel [21]3 years ago

6 0

It’s c
You would use cah which is cosine
20 x cos(30

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Pie

Hope this help Can ask any doubt

7 0

2 years ago

What is the x-value of the solution to the system of equations?

ValentinkaMS [17]

Answer:

The solution to the system of equations is:

$x=4,\:y=-3$

Step-by-step explanation:

Given the system of equations

$5x + 4y =8$

$2x- 3y = 17$

solving the system of equations

$\begin{bmatrix}5x+4y=8\\ 2x-3y=17\end{bmatrix}$

$\mathrm{Multiply\:}5x+4y=8\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:10x+8y=16$

$\mathrm{Multiply\:}2x-3y=17\mathrm{\:by\:}5\:\mathrm{:}\:\quad \:10x-15y=85$

$\begin{bmatrix}10x+8y=16\\ 10x-15y=85\end{bmatrix}$

$10x-15y=85$

$-$

$\underline{10x+8y=16}$

$-23y=69$

$\begin{bmatrix}10x+8y=16\\ -23y=69\end{bmatrix}$

solve for y

$-23y=69$

Divide both sides by -23

$\frac{-23y}{-23}=\frac{69}{-23}$

$y=-3$

$\mathrm{For\:}10x+8y=16\mathrm{\:plug\:in\:}y=-3$

$10x+8\left(-3\right)=16$

$10x-24=16$

$10x=40$

Divide both sides by 10

$\frac{10x}{10}=\frac{40}{10}$

$x=4$

Thus, the solution to the system of equations is:

$x=4,\:y=-3$

7 0

2 years ago

a stadium floor that is in the shape of a circle has a diameter with a length of 210 yards which of these measurements is closes

Grace [21]

Area = 3.14 * radius^2

Here we have area = 3.14 * 105^2 = 34,618.5 yd^2

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3 years ago

20 equals 5 times negative 3 plus x

kotykmax [81]

Answer:

20=5*-3+x or 20=-15+x or 35=x

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3 years ago

Solve this problem in your notebook using all four steps. Harvey is 3 times as old as Jane. The sum of their ages is 48 years. F

Reil [10]

Answer:

Jane is 12 and Harvey is 36

Step-by-step explanation:

3 0

3 years ago

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