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Annette [7]
3 years ago
13

I NEED HELP ASAP WITH WORK SHOWN

Mathematics
1 answer:
DiKsa [7]3 years ago
3 0

Answers:

A) No solutions, elimination

B) Exactly one solution, substitution

Step-by-step explanation:

I'll be using elimination for this first one. I'm going to eliminate x by combining the equations.

First, let's multiply the top equation by 2.

2(-x + 5y = 8)

-2x + 10y = 16

Now, combine this equation with the bottom equation.

 -2x + 10y = 16

<u>+ 2x - 10y = 7</u>

            0 = 23

The result is false, so the first problem has no solution.

For the second problem, it would be better to use substitution because it would get pretty messy if we used elimination. I'm going to isolate x from the second equation.

-x + 2y = 0.6

Subtract 2y from both sides.

-x = -2y + 0.6

Divide both sides by -1 to make x positive.

x = 2y - 0.6

Now let's substitute x in the first equation.

0.5x + y = 0.3

0.5(2y - 0.6) + y = 0.3

y - 0.3 + y = 0.3

Combine like terms.

2y - 0.3 = 0.3

Add 0.3 to both sides.

2y = 0.6

Divide both sides by 2

y = 0.3

This problem has exactly one solution.

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Find the zeros of the polynomial p(x) 5-10x​
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Answer:

Step-by-step explanation:

The given polynomial is :

p(x) = 5-10x​

We need to find the zeros of the above polynomial. To find it, put p(x) = 0

5-10x​ = 0

Subtract 5 from both sides

5-10x​-5=0-5

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or

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Divide both sides by 10.

x = 0.5 = 1/2

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3 0
3 years ago
Can someone answer this?
Nitella [24]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
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taurus [48]

Answer:

n is equal to 26

Step-by-step explanation:

Equation: n+ n + (n+2) +(n+2) = 108

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6 0
2 years ago
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Mandarinka [93]
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The average fleet-wide performance of light duty trucks has made constant improvement since 1980. For example, the time for the
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A) T(m) = -0.16m +331.3

B) T(2015) = 8.9 . . . seconds

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