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3 years ago

Solve the system of equations by elimination. -X + y = -13 -8x - 4y = -8

Mathematics

2 answers:

Gnesinka [82]3 years ago

6 0

Answer:

X=5, y=-8

Step-by-step explanation:

-X + y =-13 equation 1

-8x-4y=-8 equation 2

4(-x+y)=4(-13). Multiply equation 1 by 4 to eliminate y

-4x + 4y =-52

———————————-

-4x + 4y =-52 equation 1 after multiplying by 4

-8x-4y=-8. Equation 2

-12x=-60 added 2 equations above

x=5

solve for y

-x+y=-13

-5+y=-13

y=-8

Ksivusya [100]3 years ago

3 0

The first one is -2x+15y=-13
The second one is uhhh well I d and K

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Step-by-step explanation:

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3 years ago

If f(x) and its inverse function, F(x), are both plotted on the same coordinate plane, what is their point of intersection?

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Answer: d) (3, 3)

<u>Step-by-step explanation:</u>

Inverse is when you swap the x's and y's.

Let's look at the points and find their inverse:

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3 years ago

Carmen wins $35 was in the contest. Tubes of her favorite brand of paint cost $4.80 each. Paint brushes cost $6.70 each. How man

Zanzabum

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3 years ago

What is the 6th term of the geometric sequence 4, −20, 100, ...?

shtirl [24]

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<u />a₆ = a(r)⁶⁻¹
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2 years ago

Read 2 more answers

Seventy-six percent of sunflower seeds will germinate into a flower, and a sample of 800 such sunflower seeds is randomly select

ollegr [7]

Answer:

12.08

Step-by-step explanation:

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Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$