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marshall27 [118]
3 years ago
7

Can you help me, please? I really need help.

Mathematics
1 answer:
k0ka [10]3 years ago
8 0
2
3
4
:)))))))))))))))))
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a hot air ballon was at 2,180 feet. it decended at 120 feet per minute for 9 minutes. what is the balloons new height?
Varvara68 [4.7K]

Answer:

The balloons new height is 1,100\ ft

Step-by-step explanation:

Let

x ----> the number of minutes

y ----> the height of a hot air balloon in feet

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem we have

The slope is equal to

m=-120\ ft\ per\ minute ---> is negative because is a decreasing function

The y-intercept is equal to

b=2,180\ ft

substitute

y=-120x+2,180

For x=9 minutes

substitute in the linear equation

y=-120(9)+2,180

y=1,100\ ft

7 0
3 years ago
Let's say that you want to paint a room in your house. The room has rectangular walls. Each wall is 8 feet high. Two of the wall
lilavasa [31]
The answer is 432...........
3 0
3 years ago
Did I do this right? If so, are they congruent or not?
wolverine [178]

Answer:

yea

Step-by-step explanation:

7 0
3 years ago
Solve the system of equations.<br><br><br> −5x+2y=9<br> y=7x<br> ​
RUDIKE [14]

Answer:

x=1  y=7

Step-by-step explanation:

−5x+2y=9

y=7x

Substitute the second equation into the first

-5x +2(7x) = 9

Distribute

-5x +14x = 9

Combine like terms

9x=9

Divide by 9

9x/9 =9/9

x= 1

Now find y

y = 7(1)

y = 7

5 0
3 years ago
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