I NEED HELP ASAP! <br> Just number 8 please! Thank you

What is the equation for the line? enter your answer in the box

Igoryamba

To get the equation of the line, you need two points that belong to this line.
From the given graph, we can choose any two points: (0,-4) and (-2,0)

The general for of the linear straight line is:
y = mx + c where m is the slope and c is the y-intercept

First, we will calculate the slope using the following rule:
slope = (y2-y1) / (x2-x1)
slope (m) = (0--4) / (-2-0) = 4/-2 = -2
The equation of the line now is: y = -2x + c

Then, we will get the value of the c. To do so, we will choose any point and substitute in the equation. I will choose the point (0,-4)
y = -2x + c
-4 = -2(0) + c
c = -4

Based on the above calculations, the equation of the line is:
y = -2x - 4

7 0

3 years ago

What is 3.30 divided by -2.00? Show work.

coldgirl [10]

Answer:

Step-by-step explanation:

$\frac{3.3}{-2}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{-b}=-\frac{a}{b}\\=-\frac{3.3}{2}\\\\\mathrm{Divide\:the\:numbers:}\:\\\frac{3.3}{2}=1.65$

7 0

3 years ago

According to the United States Health and Human Services, the mean height for Americans is 1.757 meters for men and 1.618 meters

Alchen [17]

Answer:

Her z-score is 2.03.

Step-by-step explanation:

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

Michelle’s height is 1.758 meters. What is her z-score?

Michelle's is a woman.

The average height of women is $\mu = 1.618$ and the standard deviation is $\sigma = 0.069$

This is Z when X = 1.758. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{1.758 - 1.618}{0.069}$

$Z = 2.03$

Her z-score is 2.03.

7 0

3 years ago

What do i do?? i just have to find what the the question marks show.

lina2011 [118]

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Given information
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100% = $27.60

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Rewriting it
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$\$27.60 = 100 \%$
$\$1 = 100 \div 27.60 \%$
$\$1 = \frac{250}{69} \%$

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Find $4.14 in percentage
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$\$1 = \frac{250}{69} \%$
$\$4.14 = \frac{250}{69} \times 4.14$
$\$4.14 = 15%$

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Answer: 15%
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Find $31.74 in percentage
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$\$1 = \frac{250}{69} \%$
$\$31.74 = \frac{250}{69} \times 31.74$
$$31.74 = 115%$

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Answer: 115%
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4 0

4 years ago

If a gas-filled balloon rises 40 feet in the 1st minute, 60 feet in the 2nd minute, and 80 feet in the 3rd minute, how many feet

tresset_1 [31]

The distance traveled by the balloon in every minute makes an arithmetic sequence with a first term equal to 40 ft and common difference equal to 20. The nth term of an arithmetic sequence is calculated by,
an = a1 + (n - 1) x d
Substituting,
an = 40 + (15 - 1) x 20 = 320
Thus, the answer is letter B. 320 feet.

7 0

3 years ago

I NEED HELP ASAP! Just number 8 please! Thank you