Answer:
x⁴ + 3x³ + 4x² + 12x = 0
<=> x³(x + 3) + 4x(x + 3) = 0
<=> (x³ + 4x)(x + 3) = 0
<=> x(x² + 4)(x + 3) = 0
First you have to find the area of the rectangular grid. The area of a rectangle is length•width.
So:
A= 20•12
A= 240cm
Then you need to convert 240cm into mm.
240cm is 2400mm.
Then you need to figure out how many triangles can fit into the rectangle if all the triangles have an area of 25mm. So you divide 2400 by 25.
2400:25= 96
So Alex can fit 96 triangles into the grid.
An equivalent expression means that we need an equation that is equal to the one you have listed
one way you can do this is to multiply the 7 by each term in the parentheses
this will give us 14x + 63
Here is how we check if these are equivalent. pick a number to replace "x" and then solve the problem. if we get the same answer from both expressions then we are correct
Im going to choose the number 1
7(2(1) + 9)
7(2+9)
7(11)
77
now replace "x" with the number 1 in our new expression and if we get 77 then they are equivalent
14x+63
14(1)+63
14+63
77
so 14x+63 is an equivalent expression
Answer:
B is the answer
Step-by-step explanation: Ok so the problem we are working with is
8 2/9-4 2/3. We will eliminate all the negative answers. So we only have 2 options. When we actually think logically B is the only possible answer.
Answer: 48.97
Step-by-step explanation: