Answer:
25 in.
Step-by-step explanation:
DEC is a right triangle. <DEC is a right angle.
(DE)² + (EC)² = (DC)²
DE = ½DB = ½(48 in.) = 24 in.
(24 in.)² + (7 in.)² = (DC)²
576 in.² + 49 in.² = (DC)²
(DC)² = 625 in.²
DC = 25 in.
Answer:
C. Yes Devon should have evaluated f(3).
Step-by-step explanation:
She substituted the wrong value. For x - 3 to be a factor f(3) must equal 0.
f(3) = 3^3 + 3^2 - 10(3) + 8 = 27 + 9 - 30 + 8
= 14, so x- 3 is not a factor anyway but she did substitute the wrong value.
Answer:
Step-by-step explanation:
The one that looks most closely to this.
(3b + 2r) + (4b + r) Remove the brackets.
3b + 2r + 4b + r Rewrite so the terms are close to each other.
3b + 4b + 2r + r Combine
7b + 3r or
3r + 7b
One of the two of these can be given as an answer. Please give choices if you want me to give an exact answer.
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