Answer:
<u>Correct solution in steps</u>
- 5 - 2(a + 7) + 10a = The first operation is parenthesis
- 5 - 2(a) - 2(7) + 10a = The second operation is simplification
- 5 - 2a - 14 + 10a = Next operation is collecting like terms
- (10a - 2a) + (5 - 14) = Next operation is simplification
- 8a + (-9) =
- 8a - 9
The error in the given solution was the first step: (5 - 2)
Answer: 26 4/5 miles pee gallon
Step-by-step explanation:
From the question, we are informed that Jack drove 33 1/2 miles and that he used 1 1/4 gallons of gasoline. The unit rate for miles per gallon will be calculated by dividing 33 1/2 by 1 1/4. This will be:
= 33 1/2 ÷ 1 1/4
= 26 4/5 miles per gallon
Pi is irrational, but 2-Pi is also irratonal. Let a = Pi and b=2-Pi. In this example a+b=2 which is rational.
Other example is a=3.2437629... ad Infinitum and b=6.756230... where the digits all sum to 9 therefore make a+b=10
Answer:
The center is at (0,-7) and the radius is 7
Step-by-step explanation:
We can write the equation of a circle as
(x-h)^2 + (y-k)^2 = r^2 where (h,k) is the center and r is the radius
x^2+(y+7)^2=49
Rewriting
(x-0)^2 + (y- -7)^2 = 7^2
The center is at (0,-7) and the radius is 7
<span>9 (p − 4) = 18
9p - 36 = 18
9p = 18 + 36
9p = 54
p = 54/9
p = 6</span>