Answer:
3/8
Step-by-step explanation:
3/5 × 5/8
Multiply the numerators and denominators respectively
15/40
Simplify
3/8
To expand
X times X = X^2
-2 times X = -2X ( add this to 4X to equal 2X)
4 times X = 4X
-2 times 4 = -8
X^2 + 2X -8
To solve when equation = 0
X = +2 or -4
Answer: 400
Step-by-step explanation: cube root 8000 then that times itself
Answer:
Number 2
Step-by-step explanation:
Its because its not a strait line
9514 1404 393
Answer:
E) 20
Step-by-step explanation:
The triangles are all similar, so the ratios of short to long sides are ...
EF/FC = CF/FD
8/CF = CF/50 . . . . . . use given values
400 = CF² . . . . . . . . . cross multiply
20 = CF . . . . . . . . . . . take the square root