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3 years ago

Which of the following equations describe the line shown below? Check all that apply.

Mathematics

1 answer:

swat323 years ago

4 0

Here, first we need to calculate the slope of the line,
Here, Coordinates = (4, 6) (-1, -4)
m = y2 - y1 / x2-x1
m = 6 + 4 / 4 + 1
m = 10/5
m = 2

Now, Take first coordinate: y - 6 = 2 (x - 4)
Second coordinate: y + 4 = 2 (x + 1)

In short, Your Answers would be Option B & D

Hope this helps!

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Need answer ASAP!! Find the area of the shaded region.

qwelly [4]

Answer:

(5x² +7x -26) units²

Step-by-step explanation:

$\boxed{area \: of \: rectangle = length \times breadth}$

Area of shaded region

= Area of larger rectangle -area of smaller rectangle

Area of larger rectangle

= (3x -4)(2x +2)

= 3x(2x) +3x(2) -4(2x) -4(2) (Expand)

= 6x² +6x -8x -8

= 6x² -2x -8

Area of smaller rectangle

= (x -6)(x -3)

= x² -3x -6x +18 (Expand)

= x² -9x +18

Area of shaded region

= 6x² -2x -8 -(x² -9x +18)

= 6x² -2x -8 -x² +9x -18

= 5x² +7x -26

4 0

3 years ago

A store owner is interested in opening a second shop. She wants to estimate the true average daily revenue of her current shop t

Alex

Every confidence interval has associated z value. As confidence interval increases so do the z value associated with it.
The confidence interval can be calculated using following formula:
$\overline{x} \pm \frac{zs}{\sqrt n}$
Where $\overline{x}$ is the mean value, z is the associated z value, s is the standard deviation and n is the number of samples.
We know that standard deviation is simply a square root of variance:
$s=\sqrt{315900.20}=\$562.05$
The confidence interval of 95% has associated z value of 1.960.
Now we can calculate the confidence interval for our income:
$3472.00\pm \frac{1.960\cdot 562.05}{\sqrt{60}}\\ \$3472.00\pm142.22$

6 0

3 years ago

Select the correct answer.

Oduvanchick [21]

I think answer should be thousands please give me brainlest I hope this helps let me know if it’s correct or not okay thanks

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3 years ago

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To get admitted to top universities, the applicant's SAT (Scholastic Aptitude Test) score must be on a very high side. In terms

Gekata [30.6K]

Answer:

A) The applicant's SAT z-score has to be positive and large.

Step-by-step explanation:

The zscore measures how much above or below the mean a value is in a normally distributed sample. The value can be a grade, for example.

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

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

When the zscore of X is negative and large, this means that the grade is on the very low side(very below the mean).

When the zscore of X is negative and small, this means that the grade is on the low side(a bit below the mean).

When the zscore of X is close to 0, the grade is close to the mean.

When the zscore of X is positive and small, this means that the grade is on the high side(a bit above the mean).

When the zscore of X is positive and large(Z > 1), this means that the test score is on a very high side.

The problem states that:

To get admitted to top universities, the applicant's SAT (Scholastic Aptitude Test) score must be on a very high side. So, the correct answer is:

A) The applicant's SAT z-score has to be positive and large.

6 0

3 years ago

Which expressions are equivalent

stich3 [128]

Answer:C- 3x - 7y and 3y - 7x

Step-by-step explanation:

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3 years ago

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