Answer:
Step-by-step explanation:
5.(a)
x²+6x-15=0

(b)
4x²-8x-1=0

7 14 21 28 35
I’m pretty sure
Answer: n = 63
Step-by-step explanation:
n ÷ 21 = 3
Do the opposite to find n!
3 × 21 = 63
So, to check our answer
63 ÷ 21 = 3
n = 3
:))
Answer:
(4y+1) (5y-2)
Step-by-step explanation:
52 is
104% of 50
Divide 52 over 50 to get the decimal needed:

Multiply the decimal by 100: