3 years ago

How to solve a system of equations

1 answer:

enot [183]3 years ago

6 0

30: r = -32
38: n < -24
54: ?

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gtnhenbr [62]

Answer:

$13x+4y+12$

Step-by-step explanation:

Combine all the like terms & then solve:

$(4x+2x+7x)+(-5y+9y)+(4+6+2)$

$13x+4y+12$

4 0

2 years ago

otez555 [7]

Expanding the given expressions using Foil:

1)(–7x + 4)(–7x + 4) = $7x^{2}-28x-28x+16=49x^{2}-56x+16$

2) (–7x + 4)(4 – 7x)= $-28x+49x^{2}+16-28x=49x^{2}-56x+16.$

3)(–7x + 4)(–7x – 4)= $49x^{2}+28x-28x-16$ = $49x^{2}-16.$

4)(–7x + 4)(7x – 4)= $49x^{2}+28x+28x-16=49x^{2}+56x-16.$

The third option that is (–7x + 4)(–7x – 4) is difference of two squares.

5 0

3 years ago

polet [3.4K]

Line b and h because to find radius it half of the diameter of STRAIGHT lines

7 0

3 years ago

S_A_V [24]

I actually think its b cause it can't be d (thats obvious) yh........but i might be wrong

4 0

3 years ago

umka21 [38]

Answer:

40 + ( -63) is less

Step-by-step explanation:

.... .....

4 0

3 years ago