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3 years ago

Help with my homework

Mathematics

1 answer:

Alexxx [7]3 years ago

8 0

Answer:

$y -2x = -8$

Step-by-step explanation:

Given:

$y = 2x -5$

Parallel lines have the same slopes in their equations. We can see the given equation of the line is written in Slope-Intercept Form with slope $2$ . So, let's just find the equation that has the same slope.

We can see that all of the linear equations given in the choices are written in Standard Form. This means that this makes it harder to know the slope. So, we have to write rewrite them in Slope-Intercept Form. However, the equation, $y -2x = -8$ is the one that has the same slope with the given linear equation. If in doubt you can rewrite the other equations in Slope-Intercept Form yourself or see the solution below.

$y -2x = -8 \\ y -2x +2x = -8 +2x \\ y = 2x -8$

To know more about the slopes of the line, you can refer to my Answers from these Questions:

brainly.com/question/24640665
brainly.com/question/24656969
brainly.com/question/24638053
brainly.com/question/24599351

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24. If Jenna spent 30 hours on the computer this week. how much total time did she spend on

Verdich [7]

Option B) 3 hours is the time spent by Jenna on the e-mail this week.

Step-by-step explanation:

Jenna spent 30 hours on the computer this week.

The amount of time she spends on computer to work on various fields in given in the pie-chart.

This 30 hours represents her 100% work on computer.

From the figure shown,

She spent 10% of her total work on e-mail.

Therefore, 10% of 30 is the work done in hours by her on e-mail.

⇒ (10/100) × 30

⇒ 0.1 × 30

⇒ 3 hours

∴ Option B) 3 hours is the time spent by Jenna on the e-mail this week.

7 0

3 years ago

If f(x) = -2x + 7, find f(8)

anastassius [24]

Answer:

-9

Step-by-step explanation:

You have to plug 8 into the formula for x. f(8) = -2(8)+7 = -16+7 = -9

5 0

3 years ago

125 is what percent of 50?

Harrizon [31]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

The scatter plot shows the average heights of children up to age 5.

Over [174]

Answer:

(a) $y = 4.5x + 22$ -- The equation

(b) 31 inches

Step-by-step explanation:

Given

See attachment

Solving (a): The equation of the trend line.

We start by calculating the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

Where

$(x_1,y_1) = (0,22)$

$(x_2,y_2) = (4,40)$

So, we have:

$m = \frac{40 - 22}{4 - 0}$

$m = \frac{18}{4}$

$m = 4.5$

The equation is then calculated using:

$y = m(x-x_1)+y_1$

Where:

$(x_1,y_1) = (0,22)$

$m = 4.5$

$y = 4.5(x - 0) + 22$

Open bracket

$y = 4.5x - 0 + 22$

$y = 4.5x + 22$

(b) The height of a 2 year old.

To do this, we substitute 2 for x in $y = 4.5x + 22$

$y = 4.5 * 2 + 22$

$y = 9+ 22$

$y = 31$

The prediction is 31 inches

7 0

3 years ago

Create a polynomial function in standard form with a leading coefficient of 2 and zeros at 0 1 and 3 brainly

TEA [102]

Answer:

$P(x) = 2x^3 - 8x^2 + 6x$

Step-by-step explanation:

Given

$p =2$ -- Leading coefficient

$Zeros: 0, 1\ and\ 3$

Required

Determine the polynomial

Represent the zeros with a, b and c.

Such that

$a = 0$

$b = 1$

$c = 3$

The polynomial is:

$P(x) = p * (x - a) * (x - b) * (x - c)$

$P(x) = 2 * (x - 0) * (x - 1) * (x - 3)$

$P(x) = 2x * (x - 1) * (x - 3)$

Open bracket

$P(x) = (2x^2 - 2x) * (x - 3)$

$P(x) = 2x^3 - 6x^2 - 2x^2 + 6x$

$P(x) = 2x^3 - 8x^2 + 6x$

5 0

3 years ago

Help with my homework ​

Help with my homework