Answer:
3x^2+17x-28+-1x^2/4
Step-by-step explanation:
1.Distribute
3x(x+7)−4(x+7)−1⋅1/4⋅x^2
3x^2+21x−4(x+7)−1⋅ 1/4 ⋅x^2
3x^2+21x−4x-28−1⋅1/4⋅x^2
2.Combine like terms
3x^2+17x−28−1⋅1/4⋅x^2
3.Multiply the numbers
3x^2+17x−28−1/4x^2
4.Combine multiplied terms into a single fraction
3x^2+17x−28+-1x^2/4
SOLUTION
3x^2+17x-28+-1x^2/4
We know that the whole thing is 90 degrees, because of that little symbol.
So, b + 63 = 90
b = 90-63=27
Answer:
−
8 − 36
Step-by-step explanation:
15, 20, 30, 35, 40, 50
(+5) (+10) (+5) (+10)..etc