X^2-8x+21
=x^2-2(4)(x) +16+5
=(x-4)^2+5
here a=1
h=4
k=5
Answer:
3000
Step-by-step explanation:
30000/10=3000
Hope this helps :D
A: 14+x B: 2a-2. I got these answers by writing that out as an equation
1.
558 can be rounded to 600.
44 can be rounded to 40.
600 x 40 = 24,000
2.
9 x 802 = 9 (800 +2) =7200 + 18 = 7218
3.
3699 x 7 = (3700-1) x 7 = 25,900 - 7 = 25,893
4.
34 x 93 = 34 x (100-7) = 3400 - 238 = 3162
5.
678 x 87 = 58,986