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3 years ago

9

Which of the following describes a situation for the inequality: 3w + 9 ≤ 21

2 answers:

irina1246 [14]3 years ago

7 0

Answer: The answer would be A. A girl gets $3 for every box of cookies sold plus 9 dollars for trying. She makes either $21 total or just below that amount.

Step-by-step explanation:

w is the box and when a number is beside a letter it is multiplication and then 9 dollars for trying. the < with the underline means that it is the same amount or less.

Dafna1 [17]3 years ago

4 0

Answer:

B

Step-by-step explanation:

She wouldn't have sold just one box. Seven or more makes much sense.

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The points (4,0) and (7,6) lie on a particular line. What is its equation in slope-intercept form of this line?

bulgar [2K]

Answer:

y=2x-8

Step-by-step explanation:

To write the equation in slope intercept form y=mx+b you need a slope and the y-intercept. We will calculate the slope and then substitute it and a point into the point slope form $y-y_1=m(x-x_1)$ . Simplifying this form will result in slope intercept form.

Calculate the slope by subtracting the y values and x values of the points.

$m=\frac{6-0}{7-4} = \frac{6}{3}=2$

The slope is 2. Choose one point to use the slope with in the point slope form. Then substitute and simplify.

$y-0 = 2(x-4)\\y=2x-8$

5 0

3 years ago

Solve for x in degrees

Angelina_Jolie [31]

Answer:

B. 24.3°

Step-by-step explanation:

Apply the sine rule to solve for x

Thus:

$\frac{sin(x)}{8} = \frac{sin(112)}{18}$

$\frac{sin(x)}{8} = \frac{sin(112)}{18}$

Multiply both sides by 8

$sin(x)= \frac{sin(112)}{18}*8$

$sin(x) = 0.4121$

$x = sin^{-1}(0.4121}$

x = 24.3° (nearest tenth)

6 0

3 years ago

Find the value of x when y = 16.<br> y = -5x + 4<br>x = ?

spayn [35]

Answer:

- 12/5

Step-by-step explanation:

6 0

3 years ago

Anika is hiking on a rectengular trail at the nation park there are four resting spots along the corners of the trail on the map

Drupady [299]

Answer:

The perimeter is 14 units

<em></em>

Step-by-step explanation:

Given

$A = (-2,2)$

$B = (1,2)$

$C = (1,-2)$

$D = (-2,-2)$

Required

Determine the perimeter

To do this, we simply calculate the distance between the sides of the rectangle i.e. AB, BC, CD and DA.

Distance (d) is calculated using:

$d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}$

For AB

$A = (-2,2)$ --- $(x_1,y_1)$

$B = (1,2)$ --- $(x_2,y_2)$

$AB = \sqrt{(-2 - 1)^2 + (2 - 2)^2} = \sqrt{9} = 3$

For BC

$B = (1,2)$ --- $(x_1,y_1)$

$C = (1,-2)$ --- $(x_2,y_2)$

$BC = \sqrt{(1-1)^2 + (2--2)^2} = \sqrt{16} = 4$

For CD

$C = (1,-2)$ --- $(x_1,y_1)$

$D = (-2,-2)$ --- $(x_2,y_2)$

$CD = \sqrt{(1 - -2)^2 + (-2 -- 2)^2} = \sqrt{9} = 3$

For DA

$D = (-2,-2)$ --- $(x_1,y_1)$

$A = (-2,2)$ --- $(x_2,y_2)$

$DA = \sqrt{(-2--2)^2 + (-2-2)^2} = \sqrt{16} = 4$

So, the perimeter (P) is:

$P = AB + BC + CD + DA$

$P = 3 +4 + 3 + 4$

$P = 14$

<em>The perimeter is 14 units</em>

5 0

3 years ago

And I also don’t know how to do this.

Paraphin [41]

C is the answer because i did this and it not that hard if you let the teacher explain to u

3 0

3 years ago