All categories

2 years ago

Help me please????????

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

8 0

9514 1404 393

Answer:

A, C, E

Step-by-step explanation:

The proportional relations on the list are ...

feet and inches
flour and bread
gallons and cost

We often model running distance and time as proportional, but a marathon is a long enough run that speed is rarely constant. It usually decreases over the course, and may increase near the end.

A relationship is proportional if there is a constant multiplier that relates the output to the input.

_____

Additional comment

For the relations listed above, the constants are ..

the conversion factor between feet and inches
the amount of flour in a bread recipe
the price of a gallon of gas

For running time and distance, the multiplier is speed. The relation is only proportional if speed is a constant.

You might be interested in

Which of the following is equal to the expression listed below?

Sliva [168]

Answer:

C. 9(3+2)

Step-by-step explanation:

9*3 = 27 and 9*2 = 18 then add which gives you 45

Or do it this way

9(3+2) = 9(5) = 45

Hope this helps!

3 0

3 years ago

Read 2 more answers

What percent of 9.2 m is 2.5m?

Valentin [98]

27.1739% percent. to find that, all you have to do is multiply 2.5x100. that equals 250. divide this by 9.2, and that is your answer

7 0

3 years ago

Read 2 more answers

The owner of an office building is expanding the length and width of a parking lot by the same amount. The lot currently

nadezda [96]

Answer:

The length of the parking lot should be increased by 20 feet.

Step-by-step explanation:

First, you find the product of 120 and 80, you get 9600.

Next, add 4400 to it. You get 1400

Finally what would you add to both 120 and 80 to get 14000? 20 to get 140*100.

3 0

3 years ago

How to solve 8 to the power of negative one third

wariber [46]

$8^{-\frac{1}{3}}=\dfrac{1}{8^\frac{1}{3}}=\dfrac{1}{\sqrt[3]8}=\dfrac{1}{2}\\\\Used:\\\\a^{-n}=\dfrac{1}{a^n}\\\\a^\frac{1}{n}=\sqrt[n]{a}\\------------------------\\Other\ method\\\\8=2^3\\\\8^{-\frac{1}{3}}=(2^3)^{-\frac{1}{3}}=2^{3\cdot\left(-\frac{1}{3}\right)}=2^{-1}=\dfrac{1}{2}\\\\Used:\\\\(a^n)^m=a^{n\cdot m}\\\\a^{-n}=\dfrac{1}{a^n}$

8 0

2 years ago

Perform the given operation and simplify. (m-2)(m*2+2m-3)

dedylja [7]

Answer:

=4m^2−11m+6

Step-by-step explanation:

Given algebraic expression:

(m-2)(m•2+2m-3)

To:

Simplify

Solution:

(m−2)(m(2)+2m−3)

=(m)(m(2))+(m)(2m)+(m)(−3)+(−2)(m(2))+(−2)(2m)+(−2(−3)

=2m^2+2m^2−3m−4m−4m+6

=4m^2−11m+6

6 0

1 year ago

Help me please????????​

Help me please????????