Answer:
80% of 100
Step-by-step explanation:
25% of something is basically dividing it by 4, meaning 25% of 200 is 50,
While 80% of 100 is 80
A good way to memorize this is if youre taking anything as a percent of 100, get rid of a 0 on the 100, and put a decimal place in the number.
(e.g. 90% of 10 is 9. whereas 90% of 100 is 90)
Just remember which you're dealing with!
Hope this helps!
Answer:
a- (x-7)(x+9) | b- 193*207 | c- 242*258
Step-by-step explanation:
a)
x^2+2x-63.
the middle number is <em>2 </em>and the last number is <em>-63</em>.
You would have 2 numbers that add to 2 and multiply to -63.
Those numbers are -7 and 9.
so (x-7)(x+9).
b)
((200)-7)((200)+9)
(193)(209).
You can check this by multiplying 193 by 209 and then doing (200)^2+2(200)-63. Both would equal 40337.
c)
2(x-7)+2(x+9)=1000
(2x-14)+(2x+18)=1000
4x+4=1000
4x=996
x=249.
((249)-7)((249)+9)
(242)(258)
Answer:2
Step-by-step explanation: Clare estimated but did not measure
Midpoint is (3.5,2.5)
distance is square root of 18