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katrin2010 [14]
3 years ago
7

I need help with my little brothers homework?

Mathematics
2 answers:
erik [133]3 years ago
7 0
I only did the first part but maybe later I will solve the rest too. If there are any errors but tell me so I can update the pic.

olya-2409 [2.1K]3 years ago
3 0
2. There is 10 different strings
3. I think you need to draw out the string lengths and then your done :)
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Write a trinomial whose binomial factors contain constant terms that sum to −11 and have a product of 18.
yaroslaw [1]

Answer:

The answer is (x - 9)(x - 2), or x2 - 11 + 18.

Step-by-step explanation:

Well, think about it. What two numbers add to -11 and multiply to get 18? -9 and -2 add to get -11 and multiply to get 18.

8 0
3 years ago
Solve for a. Show your work (ALL steps must be shown): -2(a-3)=12
irga5000 [103]

Answer

a= -6

Step-by-step explanation:

-2(a-3)=12

1.) -2(a)= -2a

2) -2(-3)= 6

3)  -2a+6=12

          -6    -6

4) -2a/-2 = 12/-2

a = -6

3 0
3 years ago
Figure ABCD is a parallelogram.
STatiana [176]
The answer is 14 units
7 0
3 years ago
Exercise which car can travel farther on 1 gallon of gas?
Julli [10]

Answer:

nidE sme olome tib ary dae usa arajkpnoder xd jsaludos aja lpa

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Consider the system of equations.
anzhelika [568]

Answer: You can multiply the top equation by -1 to eliminate the x variable.

And the solution is (2,4/3)  in case you need it.

Step-by-step explanation:

2x + 3y = 8

2x + 6y = 12

If you multiply the upper equation or down equation by one, you will be able to eliminate the x variable.

-1( 2x + 3y) = -1(8)     New equation:   -2x -3y  = -8.

Add the new equation you got  by multiplying the top equation by -1 to the bottom equation.

Add them:     -2x -3y = -8

                      2x + 6y = 12  

                               3y = 4  

                              y = 4/3

You can now input the value for y into the one of the equations and solve for x.

-2x - 3(4/3) = -8

-2x -4 = -8  

     +4     +4

-2x = -4

x = 2

8 0
3 years ago
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