Answer:
Step-by-step explanation:
use the comparison method
3x + 1 = 3x - 3
1 = -3
the expression is false for any value of x and y , so there no solution
Answer:
The tree is 48 feet tall.
Step-by-step explanation:
Cross multiply. ⇒ ![\frac{5}{6} x\frac{40}{x}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B6%7D%20x%5Cfrac%7B40%7D%7Bx%7D)
5 times 8 equals 40, so 6 times 8 equals ___?
Solve. ⇒ ![\frac{5}{6} x\frac{40}{x} =48](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B6%7D%20x%5Cfrac%7B40%7D%7Bx%7D%20%3D48)
The tree is 48 feet tall.
Answer:
I got it it is right here answer 5+-8
Step-by-step explanation:
9(3j-6) = 27j - 54
<span>Note: a(b-c) = ab - ac</span>
First one;
![f(x) = {x}^{2} - 3x - 28](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%20%7Bx%7D%5E%7B2%7D%20%20-%203x%20-%2028)
As it factorises to:
f(x) = (x - 7)(x + 4)
Which, if set equal to 0, will solve to give the desired solutions like so:
f(x) = (x - 7)(x + 4) = 0
x - 7 = 0 x + 4 = 0
x = 7 x = -4
None of the other quadratics solve to give desired solutions when set equal to 0.