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AnnZ [28]
2 years ago
6

Multiple Choice

Mathematics
2 answers:
dexar [7]2 years ago
8 0
The answer is A) 3x2 +15x
mote1985 [20]2 years ago
4 0

Answer:

A

Step-by-step explanation:

since 8 and 7 have the same variable i can add them both and i will get 15x and then i multiply both constant 3 x 2 and get 6. So the only answer that is fit  is A.

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I will mark best answer brainliest
Hunter-Best [27]

Answer: -1

Step-by-step explanation:

-8 (-8x - 6) = -6x - 22

distribute

64x + 48 = -6x -22

get rid of the smallest x by adding 6x to both side

70x + 48 = -22

minus 48 to both sides

70x = -70

divide both side by 70

x = -1

8 0
2 years ago
Read 2 more answers
What are the number of integral solutions of the equation 2x+2y+z=20 such that x>=0 , y>=0 , z>=0?
zaharov [31]
2x+2y+z=20\\
z=\dfrac{20}{2x+2y}\\
z=\dfrac{10}{x+y}

Now, for z to be an integer, the sum x+y must be a divisor of 10. 
It has to be a positive divisor since z≥0. Also x≠y.

x+y=1 \\
x=1-y\\

x≥0 and y≥0 so y can be equal to either 0 or 1. There are 2 solution in this case.

x+y=2\\
x=2-y\\
In this case, y can be equal to 0,1, or 2, but for y=1 ⇒ x=1, so there are two solutions.

x+y=5\\
x=5-y
y can be 0,1,2,3,4 or 5 - 6 solutions

x+y=10\\
x=10-y
y can be 0,1,2,3,4,5,6,7,8,9,10, but for y=5 ⇒ x=5, so 10 solutions.

2+2+6+10=20 solutions in total.
6 0
3 years ago
PLEASE HELP ASAP!!!! 100% CORRECT ANSWERS ONLY PLEASE!!!!
zmey [24]
Area= 2πr

So, 

If you were to multiply the radius by 2 since 2 is not in the equations, 

4*2= 8

8π ft^2 would be the correct answer.

I hope this helps!
~kaikers
5 0
2 years ago
Read 2 more answers
Uh, help? My quarantine brain does not understand.
atroni [7]
You put the values of x into the equation to work out y, so the y column would be -5, -1, 3, 7 (for question 6)
For question 7, the y column would be 2,2,0,-2
Use these values to draw the graphs :)
4 0
2 years ago
The line plot shows the different lengths of nails in your toolbox. If you take all the nails that are less than 2 inches long a
Yuliya22 [10]

Answer:

<u>The correct answer is 15 1/2 inches</u>

Correct graph:

Adding it below from previous question that can be found at brainly

Step-by-step explanation:

As we can see in the line plot below, we have:

  • 3 * 1/2 = 1.5
  • 5 * 1 = 5
  • 6 * 1 1/2 = 9

Now, adding up we have:

1.5 + 5 + 9 = 15.5 or 15 1/2 inches

6 0
3 years ago
Read 2 more answers
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