Answer:
2 4/7
Step-by-step explanation:
3/7+4/7= 7/7 or 1 whole
So you add that to the 5 and get 6, then you need 2 to get to 8 because 6+2=8
Hope this helped!!!
Answer:
187.5 ft²
Step-by-step explanation:
15 x 15 = 225
1/2(5 x 15) = 37.5
225 - 37.5 = 187.5
Answer:
4
Step-by-step explanation:
3x-12=24
-12 to both sides
3x-12-12=24-12
3x=12
3x/3=12/3x
x=4
![4x^2-49](https://tex.z-dn.net/?f=4x%5E2-49)
Use the Difference of Two Squares Formula, ![x^2-y^2=(x+y)(x-y)](https://tex.z-dn.net/?f=x%5E2-y%5E2%3D%28x%2By%29%28x-y%29)
If x² = 4x², then x = √4x², x = 2x
If y² = 49, then y = √49, y = 7
We know both x and y, straight to formula.
![x^2-y^2=(x+y)(x-y)\\4x^2-49=(2x+7)(2x-7)](https://tex.z-dn.net/?f=x%5E2-y%5E2%3D%28x%2By%29%28x-y%29%5C%5C4x%5E2-49%3D%282x%2B7%29%282x-7%29)
Therefore, the factored form of 4x²-49 is (2x+7)(2x-7)