3 years ago

I only need help with 10, 11, 12

Mathematics

1 answer:

natulia [17]3 years ago

4 0

Answer:

Step-by-step explanation:

11 is the same as 9

10 is the same as number 9

12 i dont know

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Linear System, substitutional method 5x+4y=32 9x-y=33 helppp

Pachacha [2.7K]

5x + 4y = 32 ⇒ 45x + 36y = 288
9x - 1y = 33 ⇒ 45x - 5y = 165
 41y = 123
 41 41
 y = 3
 5x + 4(3) = 32
 5x + 12 = 32
 - 12 - 12
 5x = 20
 5 5
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 (x, y) = (4, 3)

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3 years ago

Explain why 7 times x/7=x. How does your answer help you solve a division equation such as x/7=2?

tatiyna

Dear Ajtocute, let's have x=9 Multiply 7 by 9 to get 63. Then, you divide 63 by 7 to get back to 9. You just cancel out the multiplication with division.

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3 years ago

What is 1/2+p=-3 i need help

son4ous [18]

Answr:

p=−7/2

Step-by-step explanation:

Simplify both sides of the equation.

=−3

Step 2: Subtract 1/2 from both sides.

−

=−3−