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Lynna [10]
2 years ago
7

Derrick drove 15 miles at an average rate of 30 miles per hour.

Mathematics
1 answer:
leonid [27]2 years ago
4 0
67 miles lololololol
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Find f(4) when f(x)=4x^2 - 2 x - 4
prisoha [69]

Answer:

52

Step-by-step explanation:

f(x)=4x^2-2x-4

f(4)=4(4)^2-2(4)-4 (I replaced x with (4) since we are to find f(4).)

f(4)=4(16)-2(4)-4    (By the order of operations, we take care of the exponents before whatever else we have here.)

f(4)=64-8-4           (By the order of operations, we take care of the multiplication as we see if left to right.)

f(4)=56-4              (By the order of operations, we perform addition/subtraction as we see it left to right.)

f(4)=52                 (This completes the simplification.)

We could have also put this in our calculator as:

4(4)^2 -  2(4)  -  4

This would have returned 52.

8 0
3 years ago
5 liters at $15.25<br> x liters at $33.55
babunello [35]

Answer:

x=2

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
What is the length of the side adjacent to LZ? Will give brainliest
mojhsa [17]

9514 1404 393

Answer:

  16

Step-by-step explanation:

Angle Z is not the right angle, so the rays that make up the angle are ...

  • hypotenuse ZX
  • adjacent leg ZY

The length of the adjacent leg ZY is shown as 16.

7 0
3 years ago
say you want to find the rate of simple annual interest for 2 year loan the bank charges $560 interest for the $2,000 loan what
romanna [79]
28% interest would be your answer, you just divide 560/2000=.28
5 0
3 years ago
Solve the system of equations algebraically. Verify your
xz_007 [3.2K]

Answer:

The solution is the point (0.5,-3)

Step-by-step explanation:

we have

y=4x-5 ----> equation A

y=-3 ----> equation B

Solve the system by substitution

Substitute equation B in equation A

-3=4x-5

Solve for x

Adds 5 both sides

-3+5=4x

2=4x

Divide by 4 both sides

x=0.5

therefore

The solution is the point (0.5,-3)

<em>Verify your  answer using the graph</em>

using a graphing tool

Remember that the solution of the system of equations is the intersection point both graphs

The intersection point is (0.5,-3)

therefore

The solution is the point (0.5,-3)

see the attached figure

8 0
3 years ago
Read 2 more answers
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