(8x 2 −15x)−(x 2 −27x)=ax 2 +bxleft parenthesis, 8, x, squared, minus, 15, x, right parenthesis, minus, left parenthesis, x, squ
quester [9]
Answer:
<h2>5</h2>
Step-by-step explanation:
Given the expression (8x² −15x)−(x² −27x) = ax² +bx, we are to determine the value of b-a. Before we determine the vwlue of b-a, we need to first calculate for the value of a and b from the given expression.
On expanding the left hand side of the expression we have;
= (8x² −15x)−(x² −27x)
Open the paranthesis
= 8x² −15x−x²+27x
collect the like terms
= 8x²−x²+27x −15x
= 7x²+12x
Comparing the resulting expression with ax²+bx
7x²+12x = ax²+bx
7x² = ax²
a = 7
Also;
12x = bx
b =12
The value of b - a = 12 - 7
b -a = 5
Hence the value of b-a is equivalent to 5
Answer:
A
Step-by-step explanation:
u move the decimal place left 2 spaces and u would get 0.024
Answer:
3.785%
Step-by-step explanation:
Assignment is 14% of the quiz
=> Assignment = 14% of the quiz
Quiz is 27% of the total weightage
=> 14% of 27%
<u>Find 14% of 27% </u>
14% of 27%
= 0.14 x 27 = 3.785%
The assignment is 3.785% of the total weightage.
Answer:
The answer is 15.
Step-by-step explanation:
10% of 150 is 15. (you can take away the zero)
Answer: c
Step-by-step explanation:
