2a+1 + 3a+2 +5a-9 you would start by combining like terms
2a+3a+5a= 10a
1+2-9= -6
10a-6=94
then subtract 94-6=88
then divide 88 by 10= 8.8
a=8.8
Three consecutive odd integers are n, n+2 and n+4
n + n+2 + n+4 = -87
3n + 6 = -87
3n = -87 - 6
3n = -93
n = -93/3
n = -31
n+2 = -31 + 2 = -29
n+4 = -31 + 4 = -27
The numbers are -31, -29 and -27
Answer:

Step-by-step explanation:
Given
x -
= 9 ← square both sides
(x -
)² = 9²
x² - 2 +
= 81 ( add 2 to both sides )
x² +
= 83
Now
(x +
)² = x² +
+ 2, thus
x² +
= 83 + 2 = 85
(x +
)²= 85 ( take the square root of both sides)
x +
= 
Answer:
99% Confidence interval: (0.185,0.375)
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 150
Number of cars that have faulty catalytic converters, x = 42
99% Confidence interval:
Putting the values, we get:
The 99% confidence interval for the true proportion of new cars with faulty catalytic converters is (0.185,0.375)