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3 years ago

Hi. I need help with these questions. See image for question. Answer 15

Mathematics

2 answers:

UNO [17]3 years ago

8 0

Answer:

x = 1/5

Step-by-step explanation:

<h3>Given</h3>

Parabola y = 5x² -2x + 3

The equation of the line of symmetry

<h3>Solution</h3>

The line of symmetry passes through the vertex of the parabola

<u>The vertex is determined by the formula: </u>

x = -b/2a
Where b and a are constants from the standard form of ax² + bx + c = 0

<u>Substituting values from the given equation:</u>

x = -(-2)/2(5) = 1/5
x = 1/5 is the line of symmetry

Sauron [17]3 years ago

4 0

Step-by-step explanation:

YOU JUST FOLLOW THE STEP

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Teds science class collects aluminum cans to sell to the recycling center. The center pays a fixed amount for each kilogram of a

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7 0

2 years ago

Adam’s car traveled 465.3 miles on 16.5 gallons of gas. Which equation can be used to determine the average number of miles that

Nostrana [21]

Answer:

$y=28.5x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form $y/x=k$ or $y=kx$

In this problem

Let

x------> the number of gallons

y------> the number of miles

the relationship between the number of miles and the gallons of gas represent a linear direct variation

The constant of proportionality k is equal to the slope m

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therefore

the equation of the linear equation

$y=28.5x$

5 0

3 years ago

Read 2 more answers

Y=1/2x +5<br> Y=-3/2x-7<br> Find x and y

gayaneshka [121]

I'm going to use the substitution method.

If y = - 3/2 - 7, then:

1/2x + 5 = - 3/2x - 7

Combine like terms:

4/2x = - 12. Mutiply both sides by 2/4 to get x = -12 (2/4)

Simplify to get:

x = - 6.

Plug - 6 back in for x in either equation.

Y = 1/2( - 6) + 5 which becomes Y = - 3 + 5.

X = - 6, Y = 2

8 0

3 years ago

Which of the following is the product of the rational expression shown below

wolverine [178]

Option C: $\frac{x^{2}-9}{x^{2}-4}$ is the product of the rational expression.