Answer:
14.652c-21.22b
Step-by-step explanation:
multiply parentheses by -1.01
9.4c-22.22b+5.252c+b
collect like terms
14.652c-21.22b
Answer: They washed 60 small cars.
Step-by-step explanation:
5x + 10y = 800
y = 50
5x + 10(50)
5x + 500 = 800
Subtract 500 from each side
5x = 300
Divide each side by 5
x = 60
Answer:
A.2
Step-by-step explanation:
We know that |x|² = 13 and x = 3+bi:
(3+bi)² = 13
3² + b² = 13
9 + b² = 13
Subtract 9 from each side:
9 + b² - 9 = 13 - 9
b² = 4
Take the square root of each side:
√b² = √4
b = 2
Answer:
a) will definitely be an odd number
Step-by-step explanation:
4^n is always even (when you multiply even and even number, the product is always even)
when you add one to even number, the sum is always odd
so 4^n +1 is odd.
Answer:
A
Step-by-step explanation: