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3 years ago

12

Find the slope of (-7,-2) and (-4,7)

2 answers:

Soloha48 [4]3 years ago

7 0

Slope is found by y2-y1 over x2-x1 the answer is 9/3 = 3

3

algol [13]3 years ago

5 0

Answer:

9/3=3

Step-by-step explanation:

the formula is y2(7) minus y1(-2)

divided by x2(-4) minus x1(-7)

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And an electronics warehouse ships TVs and DVD players to retailers all throughout the United States. The weight of three televi

vodomira [7]

X= weight of TV
y= weight of CD

3x+5y= 62.5
3x+ 2y= 52
You can either solve for a variable, or eliminate a variable by subtracting the second equation from the first:

3x + 5y = 62.5
-(3x+2y = 52)
0 + 3y = 10.5, so y = 10.5/3 or 3.5.

Now plug y= 3.5 back into any equation to get x:

3x + 5(3.5) = 62.5
3x + 17.5 = 62.5
3x = 45
x = 15
Always check work. Both equations should be true for x=15, y= 3.5

4 0

3 years ago

30 POINTS!! Write the slope-intercept form of the equation for the line.

Anton [14]

Answer:

B. $y = -\frac{3}{10}x + \frac{1}{2}$

Step-by-step explanation:

Well slope-intercept form is $y = ax + b$ .

Let's start with the slope.

In this case, finding the slope is easy.

It should have a negative slope.

So we can cross out answer choices A. and C.

Also, we can cross out D. because it just makes no sense, -10/3, if you start from the y-intercept and go down 10 and across 3, yeah that's

not the slope.

So we can cross out D.

The only answer choice left is B.

We can tell the y-intercept is 1/2 because like come on so B is the correct answer.

B. $y = -\frac{3}{10}x + \frac{1}{2}$

8 0

3 years ago

Read 2 more answers

Find the measure of one exterior angle for the following regular polygon

kifflom [539]

Answer:

this is a 60 60 60 triangle, so one exterior angle is 120 degrees.

Step-by-step explanation:

hope it helps!

7 0

3 years ago

In which of the options below will the number 3 correctly fill in the blank. Select all that apply. A) ___ : 4 = 12 : 16 B) 1 :

aniked [119]

Answer:

A and B

Step-by-step explanation:

Given

List of given options

Required

Which will correctly take 3 to fill the blank

Represent the blanks with x

Option A:

$x : 4 = 12 : 16$

Convert to fractions

$\frac{x}{4} = \frac{12}{16}$

Multiply through by 4

$4 * \frac{x}{4} = 4 * \frac{12}{16}$

$x = \frac{48}{16}$

$x = 3$

Option B:

$1 : 5= x : 15$

Convert to fraction;

$\frac{1}{5} = \frac{x}{15}$

Multiply through by 15

$15 * \frac{1}{5} = \frac{x}{15} * 15$

$15 * \frac{1}{5} = x$

$3 = x$

$x = 3$

Option C:

$x : 1 = 12 : 3$

Convert to fraction

$\frac{x}{1} = \frac{12}{3}$

$x = 4$

Option D

$15:x = 3:1$

Convert to fraction

$\frac{15}{x} = \frac{3}{1}$

Cross Multiply

$3 * x = 15 * 1$

$3 * x = 15$

Divide through by 3

$x = 5$

From the above calculations.

<em>Option A and B can be filled with 3</em>

5 0

3 years ago

Solve for x: 2/3x + 4=12 show your work

xz_007 [3.2K]

Answer:

X=12

Step-by-step explanation:

2/3x+4=12

Multiply 3 to both sides of the equation

2x+12=36

Subtract 12 on both sides

2x=24

Divide by 2 on both sides

X=12

4 0

3 years ago