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4 years ago

6

What is x+y=3 2x+4y=8

1 answer:

jolli1 [7]4 years ago

7 0

X + y = 3
2x + 4y = 8

This is a system of equations. You can solve it using elimination. Start by multiplying the top equation by -2.
(x * -2) + (y * -2) = (3 * -2)
-2x - 2y = -6

Now add that and the bottom equation. This will cancel out x.

-2x - 2y = -6
+ 2x + 4y = 8
-----------------------
2y = 2

Solve for y.
2y = 2
y = 2/2
y = 1

Now plug 1 in for y in the first equation.

x + y = 3
x + 1 = 3

Solve for x.

x + 1 = 3
x = 3 - 1
x = 2

So x = 2 and y = 1.

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4 years ago

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3 years ago

Please assist me with the missing answers. Scores on the final exam in Ms. Meyer's statistics class follow a normal distribution

Galina-37 [17]

Answer: Ron's z-score is <u>+1.2</u>.

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Step-by-step explanation:

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3 years ago

Give two real-world situations that could be represented by the value 30

gregori [183]

Answer:

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Step-by-step explanation:

1- I went to a office for interview they said to me they will give 30$ as a salary per day.

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4 years ago

Read 2 more answers

Instructions: Find the missing side lengths. Leave your answers as radicals in simplest form.

ivanzaharov [21]

Answer:

x = 6

y = 3

Step-by-step explanation:

Give triangle is a right triangle.

By applying sine ratio in the given triangle,

sin(60)° = $\frac{\text{Opposite side}}{\text{Hypotenuse}}$

$\frac{\sqrt{3}}{2}=\frac{3\sqrt{3}}{x}$

x = 6

Now we take the cosine ratio in the given triangle,

cos(60)° = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

$\frac{1}{2}=\frac{y}{x}$

y = $\frac{x}{2}$

y = $\frac{6}{2}=3$

Therefore, x = 6 and y = 3 will be the answer.

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3 years ago