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DENIUS [597]
4 years ago
12

Which is the correct equation for calculating the kinetic energy of an object? K times E = m times g times h. K times E = one ha

lf m v squared. K times E = one half a t squared. K times E = one quarter g squared.
Mathematics
1 answer:
postnew [5]4 years ago
3 0

Answer:

KE = 1/2mv²

Step-by-step explanation:

The answer above is the formula for calculating kinetic energy. It is wise to remember it.

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4 0
4 years ago
Janice receives $.40 per pound for 1 to 99 pounds of aluminum cans he recycles. he receives $.50 per pound if you are cycles mor
Ilya [14]

Answer:

M=\left\{\begin{matrix}0.4x &x\leq99 \\ 0.5x &x>100 \\ \end{matrix}\right.

Step-by-step explanation:

<u>Function modeling</u>

Real-life situations often require the help of mathematics to model numerically what happens when the variables involved can change. It could even be used to predict some expected outcomes from those models.

The problem states Janice receives $.40 per pound when he recycles less or equal than 99 pounds of aluminum. If x is the number of recycled pounds, then the amount of money he receives is

M=0.4x

We also know that if he recycles more than 100 pounds of aluminum, the pay increases to $0.5 per pound. In that case, the amount of money is

M=0.5x

This is a case where the function is defined differently depending on the conditions of the input variable x. It's called a piecewise function. The function can be written as

M=\left\{\begin{matrix}0.4x &x\leq99 \\ 0.5x &x>100 \\ \end{matrix}\right.

Note the function is not well constructed because there is a gap for x=100 where M is not defined. If we establish that for 100 pounds the payment is $0.5, then the second piece would include x=100

5 0
3 years ago
Which function is a horizontal compression of its parent function f(x)=x^7 by a factor of 4?
nasty-shy [4]
Note that what we want is to compress any point (a, b) in the parent function, to (a, b/4).

(a, b) is a point of the graph of the function f(x)=x^7, thus we can rewrite the point as:
                                     (a, a^7).

This point is compressed to 

                                   \displaystyle{ (a,  \frac{a^7}{4} ).

This means that the function we are looking for is \displaystyle{ t(x)= \frac{x^7}{4}.

Answer: <span>t(x)=1/4x^7
</span>
6 0
3 years ago
Read 2 more answers
Describe in writing how 7/3 compares to 2 1/3
LekaFEV [45]
7/3 IS an improper fraction 2 1/3 is a mixed number
4 0
3 years ago
Select the equivalent expression.
tankabanditka [31]

Answer:

La respuesta es 10

Step-by-step explanation:

Hice todos los procedimienos y me dio 10 xd

8 0
3 years ago
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