3/5 of an hour (0.6 hours)
First, find how many words Nick types in an hour by multiplying 275 * 60.
Nick types 16,500 words per hour.
Now just divide 9,900 by 16,500.
It takes Nick 3/5 of an hour to type 9,900 words. (0.6 hours)
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Answer:
+6x-16
Step-by-step explanation:
(x+8)(x+−2)
=(x)(x)+(x)(−2)+(8)(x)+(8)(−2)
=x^2−2x+8x−16
=x^2+6x−16
Answer:
a. $185
b. 64 miles
c. 26 miles
d. x > 0
Step-by-step explanation:
a. Find C(x) when x = 40.
C(x) = 2.5 x + 85
C(40) = 2.5 (40) + 85
C(40) = 185
b. Find x when C(x) = 245.
C(x) = 2.5 x + 85
245 = 2.5 x + 85
160 = 2.5 x
x = 64
c. Find x when C(x) = 150.
C(x) = 2.5 x + 85
150 = 2.5 x + 85
65 = 2.5 x
x = 26
d. The domain of C is all the possible values of x. Since x is a distance, it doesn't make sense for it to be negative, so x > 0.
Hello !
56)
The value of the discriminant is 44.
57) ∆>0 : there are two solutions.
58)
Have a nice day
