Answer:
a = 1 and b = - 10
Step-by-step explanation:
Expand the right side of the identity
x(ax² - 3x + b) - 3(ax² - 3x + b)
= ax³ - 3x² + bx - 3ax² + 9x - 3b
= ax³ - x²(3 + 3a) + x(b + 9) - 3b
Equate the coefficients of like terms on both sides of the identity
x³ terms → ax³ with x³ ⇒ a = 1
x terms → - x with (b + 9)x ⇒ b + 9 = - 1 ⇒ b = - 10
False, a trapezoid and a square can have the same perimeter but not be confruent<span />
Considering the proportions given in the table, the superhero is most likely to be the favorite is Superman.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.
Looking at the table, the proportions associated with each superhero is given as follows:
As it has the highest proportion, the superhero is most likely to be the favorite is Superman.
More can be learned about proportions at brainly.com/question/24372153
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Answer:
6 Weeks
Step-by-step explanation:
Total number of books read 22
3 books each week
4 books she hasn't read
22-4=18 18/3= 6 weeks