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irakobra [83]
3 years ago
7

David drove 224 miles in 4 hours What is constant speed of David?

Mathematics
2 answers:
STatiana [176]3 years ago
7 0
Speed = distance / time
speed = 224 miles / 4 hours
= 56 miles per hour
LenaWriter [7]3 years ago
3 0

Answer:

He drove 56mph.

Step-by-step explanation:

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Peter, Maria and Jacob go to school together. While Peter was doing 3 steps, Maria was doing 5 steps. While Maria was doing 3 st
mixas84 [53]

Answer:200

Step-by-step explanation:

7 0
2 years ago
What is the inverse of f(x)=e^x
enot [183]

Answer:

f^{-1}(x)=\ln{x}

Step-by-step explanation:

An <em>inverse</em> function is any function that "undoes" another function. If we think of the function f as some kind of machine that takes in a number x as input and produces a number f(x) as an output, when we give inverse function f^{-1} the number f(x) as in input, we get x, our original input, as the output f^{-1}(x)

We need a function that undoes f(x)=e^x, and the natural choice for undoing an exponent is with a logarithm. Here, our base is e, so we'll choose \log_e{x}=\ln{x} as our inverse function. Let's see how that works:

f^{-1}(f(x))=\ln{e^x}

\ln{e^x} is the power we have to raise e to to get e^x, which is x, so

f^{-1}(f(x))=\ln{e^x}=x

And we have our function.

8 0
3 years ago
Write a positive or negative and Integer that represents the situation. You earn 15 raking leaves.
Vedmedyk [2.9K]

Answer:

A positive 15

Step-by-step explanation:

The key word earn tells us he's gaining.

4 0
3 years ago
Need to find angle z please help. Angle x and y are 56 degrees.
Readme [11.4K]

Answer:

43º

Step-by-step explanation:

56*2=112

360-112=248

248/2=124

124-81=43

7 0
2 years ago
The perimeter of the rectangle below is 84 units. Find the length of side VW.
Anestetic [448]

Answer:

18.

Step-by-step explanation:

1) formula of the perimeter given in the condition is:

p=2(VW+XV) or p=2(VY+XY).

Note, VW=XY and XV=VY;

2) if to substitute p=84, VW=2z+2 and XV=3z into the formula above, then

2(2z+2+3z)=84, ⇔ 5z+2=42; ⇒ z=8.

3) if z=8, then VW=2z+2=2*8+2=18.

8 0
2 years ago
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