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galben [10]
2 years ago
15

2.

Mathematics
1 answer:
den301095 [7]2 years ago
8 0
X+2y
Plug in the variables
4+2(7)
4+14
x+2y=18
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Write the inverse function for the function, ƒ(x) = 1/2x + 4. Then, find the value of ƒ -1(4). Type your answers in the box
anastassius [24]
F(x) = (1/2)x + 4
Plug y in for f(x).
y = (1/2)x + 4
Swap x and y.
x = (1/2)y + 4
Solve the equation for y =.
Subtract 4 from both sides.
x - 4 = (1/2)y
Multiply each term 2.
2x - 8 = y
Plug f^-1(x) in for y.
f^-1(x) = 2x - 8

f^-1(4) = 2(4) - 8
f^-1(4) = 0
3 0
3 years ago
Three research departments have 9 , 6 , and 8 members, respectively. Each department is to select a delegate and an alternate to
erastova [34]
The should be 158 ways, because 9*8+8*7+6*5=158.
6 0
3 years ago
Suppose Johnny invests $2,745 into an account, which has been earning interest for many years and he now has a total of $39,974.
Doss [256]
A negative number in this wouldn't be applicable.
Johnny started out with $2,745 in the beginning, EARNING (This being the key word) interest each year. Therefore, he comes out with $39,974, not being a negative number. 

Hope I helped! ^-^
5 0
3 years ago
A store receives a shipment of 5,000 MP3 players. In a previous shipment of 5,000 MP3 players, 300 were
stepan [7]

The sample was 10 numbers.

4 of the numbers are less than 301.

So 4 out of 10 would be defective.

4/10 = 0.4 x 100 = 40%

He would expect 40% to be defective.

5 0
2 years ago
Read 2 more answers
71 to the nearest tenth
xeze [42]

Answer:

ft76d956

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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