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Bess [88]
2 years ago
8

F(x) → 4x - 7. Find f(9)

Mathematics
1 answer:
Dvinal [7]2 years ago
4 0

Answer:

29

Step-by-step explanation:

f(x) = 4x -7

f(9) = 4(9)-7

=36-7

=29

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Pediatricians prescribe 5mL of cough syrup for every 25lb of a child's weight. How many mililiters of cough syrup will the docto
Marianna [84]

Answer:

9 ml

Step-by-step explanation:

The Pediatrician prescribes 5 milliliters of cough syrup for every 25 lb of child weight.

Now, the weight of Jocelyn is 45 lb.

If the rate of prescribing the cough syrup in ml per weight of patients remains constant,

Then we can use the unitary method to get the amount of cough syrup prescribed by the Pediatrician for Jocelyn, and that will be

\frac{5*45}{25} =9 ml. (Answer)

3 0
3 years ago
Three times my age in 5 years is 54. How old am i now.
Romashka [77]

Answer:

D. 13

Step-by-step explanation:

54 ÷ 3 = 18 (your age in 5 years)

18 - 5 = 13 (your age now)

8 0
1 year ago
Read 2 more answers
3x + 7 equal 13x equal -2X equal to 2X equals 5
lianna [129]

3x + 7 = 13

     -7      -7

     3x = 6

     /3     /3

       x=2

6 0
2 years ago
Line segment AB has endpoints A(2, -3) and B(-4, 6). What are the coordinates of the midpoint of AB?
KIM [24]
(-1,1.5) because you add both ys and both xs then divide by two to find the middle
8 0
3 years ago
What is the slope of a line <br> parallel to the line 4x – 3y = 16?
galben [10]
"Parallel" means the same, which means the slope you find. The formula for slopes is y=mx+b, so we need to put this equation in the right order for that. ('m' is the slope.)
 Add 4x to each side, and get -3y=16+4x. Rearrange it to get it in the right order (y=mx+b).
This is -3y=4x+16. So the number in front of 'x' is 'm', which is the slope. You never actually see 'm', it is represented by a number. So four is the slope.
5 0
3 years ago
Read 2 more answers
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