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Gnoma [55]
2 years ago
12

Which ones are rightttttt?

Mathematics
2 answers:
Vladimir [108]2 years ago
6 0

Answer:

B,C,D

Step-by-step explanation:

To find the slope of ordered pairs do (y2-y1)/(x2-x1). Your y2 is your y in your second ordered pair and your y1 is your y in the first ordered pair. Same with x. I'll do two examples. This example will be the correct answer. First example, problem B. says (0,0) and (3,2). The 2 in your second ordered pair is your y2 and your 0 in your first ordered pair is your y1. The 3 in the second pair is your x2 and your 0 in the first pair is your x1. So, (2-0)/(3-0) which is 2/3.

Step2247 [10]2 years ago
3 0

Answer:

B, C, & D

Step-by-step explanation:

We can run the slope equation quickly on both options:

B. m=\frac{2-0}{3-0}=\frac{2}{3}

C. m=\frac{7-5}{4-1}=\frac{2}{3}

D. m=\frac{2-(-2)}{4-(-2)}=\frac{4}{6}=\frac{2}{3}

Hope this helps!

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Evaluate the following expressions: 2(−1 + 3) − 7
Svetach [21]

Answer:

-3 is the answer.

Step-by-step explanation:

=2(-1+3)-7

=2(2)-7

=4-7

=-3

Hope it will help you :)

7 0
3 years ago
Solve using elimination.<br> 3x − 5y = 18 <br> -10x + 5y = 10
olga55 [171]

3x - 5y = 18 over

-10x + 5y = 10

Add them because the 5y's have the right symbols for us to add

-7x = 28

Divide

x = -4

Now you can plug in -4 for x in one equation, I would use the first equation!

3(-4) - 5y = 18

-12 - 5y = 18

Add 12

-5y = 30

Divide

y = -6

Your solutions are going to be:

x = -4

y = -6

To check your work plug x and y into one equation:

3(-4) - 5(-6) = 18

-12 + 30 = 18

18 = 18

Since 18 does equal 18 you know that your solution's work!

5 0
2 years ago
Read 2 more answers
A pyramid has a square base and a height of 6 ft. The volume of the pyramid is 162 ft^3. Let s be the length of a side of the py
geniusboy [140]

Answer:

(a)s^2\\(b)162=2s^2\\(c)s=9$ ft

Step-by-step explanation:

(a)Base Area

Side length of square base=s

Area of a Square of side length s=s^2$ ft^2

(b)

  • Height =6 ft
  • Volume=162 $ ft^3.

Volume of a Pyramid=\frac{1}{3}X$Base Area X Height

Substituting the given values, we have:

162=\frac{1}{3}Xs^2 X 6\\\\162=2s^2

(c)Solving the equation derived from (b)

162=2s^2\\$Divide both sides by 2\\s^2=81\\s^2=9^2\\s=9$ ft

Solving this equation shows that s =9 ft.

4 0
3 years ago
Lynn Solved A System Of Linear Equations And Got 8 = 8. Which Statement About This System Is True
Lelu [443]
The linear equation is probably a horizontal line with a y-intercept of 8.
5 0
3 years ago
Read 2 more answers
A garden in the shape of a right triangle has sides measuring 60, 80 and 100 ft. The owner of the garden adds a new section of f
FinnZ [79.3K]

Answer:

The answer is 48 ft

Step-by-step explanation:

Step 1:

The garden before the fence is: <u>(refer to graphical representation in attached file)</u>

o = side

b = base

h= hypotenuse  

Use Sin (t) formula;

Sin (t) = o/h

Sin (t) = 80/100

Sin (t) = 0.8

Step 2:

The garden was divided in 2 parts and a is the missing length which needed to be found <u>(refer to graphical representation in attached file)</u>

For Small triangle <u>(refer to graphical representation in attached file)</u>;

a = side

c = base

b= hypotenuse  

Use Sin (t) formula;

Sin (t) = a/b

0.8 = a/60

A = 0.8x60

A = 48 ft

Download docx
7 0
3 years ago
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