Solution:
Given expression is
To find the inverse of y.
⇒
Do cross multiplication.
⇒ y = –6 × 3
⇒ y = –18
Inverse of y means reverse the function.
We know that inverse of y is .
⇒
Hence, inverse of y is
Answer:
1985 cubic units (written as un. with the cubed exponent)
Step-by-step explanation:
First, you find the volume of the cylinder
Here's the formula:
Now, you plug in and solve.
Then, you find the volume of the dome.
Here's the formula:
Now, you just plug in and solve.
Finally, you add them together, and there's your answer!
Hope this helped!
<em>brainliest?</em>
Answer:
42 gallons 45% antifreeze
28 gallons 95% antifreeze
Step-by-step explanation:
If x is volume of 45% antifreeze, and y is volume of 95% antifreeze, then the total volume is:
x + y = 70
And the total amount of antifreeze is:
0.45 x + 0.95 y = 0.65 (70)
Solving by substitution:
0.45 x + 0.95 (70 − x) = 0.65 (70)
0.45 x + 66.5 − 0.95 x = 45.5
21 = 0.5 x
x = 42
y = 28
Answer: 11 people
Explanation:
Find the total people who actually drink something:
120 - 17 = 103
Find the sum of people who drink cold and soft drink:
88 + 26 = 114
Find the people who drinks both:
114 - 103 = 11 people
Answer:
x^2 +20x+100
Step-by-step explanation:
(x+10)^2
(x+10) (x+10)
FOIL
first:x*x = x^2
outer: x*10
Inner 10*x
last: 10*10 =100
Add them together
x^2+10x+10x+100
x^2 +20x+100