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Gekata [30.6K]
3 years ago
9

True or false ? why and why not ? 7a + 4 - 2a is equivalent to 7a + -2a + 4

Mathematics
1 answer:
Oxana [17]3 years ago
6 0
True because it’s a diamond Rottweiler
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Multiply (x + 2y)(x2 − xy + 3y).
erma4kov [3.2K]

Answer:

{x}^{3}  +  {x}^{2} y + 3xy - 2x {y}^{2}  + 6 {y}^{2}

4 0
2 years ago
Which two equations would be most appropriately solved by using the zero product property? Select each correct answer.
LekaFEV [45]
The zero product property tells us that if the product of two or more factors is zero, then each one of these factors CAN be zero.

For more context let's look at the first equation in the problem that we can apply this to: (x-3)(x+4)=0

Through zero property we know that the factor (x-3) can be equal to zero as well as (x+4). This is because, even if only one of them is zero, the product will immediately be zero.

The zero product property is best applied to factorable quadratic equations in this case.

Another factorable equation would be 2x^{2}+6x=0 since we can factor out 2x and end up with 2x(x+3)=0. Now we'll end up with two factors, 2x and (x+3), which we can apply the zero product property to.

The rest of the options are not factorable thus the zero product property won't apply to them.
3 0
3 years ago
Read 2 more answers
4th grade math help & explain please
ohaa [14]

Nothing on the rectangle is shaded, unless the camera quality is poor.

0/12

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B9%20%7Bx%7D%5E%7B2%7D%20%7D%20" id="TexFormula1" title=" \sqrt{9 {x}^{2} } " alt=
Firlakuza [10]
The answer would be 3x i believe
hope this helps! if it doesn't, let me know in the comments! have a great day!
6 0
3 years ago
What value of ‘W’ satisfies <br> 8(w+4)=38+7w<br> A. 8<br> B.6<br> C.11<br> D. 4.5
dlinn [17]
B. 6

Explanation: 8(6+4)= 80
38+ 7(6)= 80
5 0
3 years ago
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