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katrin2010 [14]
3 years ago
11

HELPPP MY MATH HOMEWORK!!!

Mathematics
2 answers:
11Alexandr11 [23.1K]3 years ago
7 0
D and then A I would say
statuscvo [17]3 years ago
7 0

I dont know how to answer number 12 but number 13 is the first one 3x + 15 = 17

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This graph shows the amount of charge left on my
prisoha [69]

Answer:

c= -20h + 90

Step-by-step explanation:

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A rectangular parking lot is enclosed by concrete barriers 5 feet long. There are 160 barriers in total. Determine the maximum a
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Well you just multiply 5 by 160 and get 800ft

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3 years ago
A submarine started at 750 meters below sea level. It rose 50 meters per hour over a 4-hour period. Which expression represents
Cerrena [4.2K]

Answer:

y(t) = 750 -50t

Step-by-step explanation:

We want to model the position of the submarine as a function of time.

Notice that we have a constant amount. The initial depth: 750 meters

 Then we have a factor that varies over time. Every hour the submarine ascends 50 meters. therefore as t increases the depth y(t) of the submarine decreases. Then the factor is:

-50t.

Where t represents the time in hours.

Then the equation that represents the new position of the submarine in relation to the level of the sea:

y(t) = 750 -50t

4 0
3 years ago
Read 2 more answers
Please help me solve the expression for “n”
Bingel [31]

Answer:

  n = 2

Step-by-step explanation:

In order for the ratio to have a value of 1, the sum of exponents in the numerator must equal the sum of exponents in the denominator:

  n + 7 = 9

  n = 9 -7 . . . . . . subtract 7 from both sides of the equation

  n = 2

___

Alternatively, you can simplify the given expression:

  \dfrac{9^n(9^7)}{9^9}=1=\dfrac{9^n}{9^2}

Hopefully, it is clear to you that the value of n must be 2 in order to make the numerator equal to the denominator.

5 0
3 years ago
What is the line's slope​
ra1l [238]

Answer:

It tell the direction and the steepness of the line. Which means how much they rise or how much they fall, horizontal or vertical. It represent by the letter m

Step-by-step explanation:

m= y/x

more detail

m=  y₂ - y₁ / x₂ - x₁

     

4 0
3 years ago
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