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sashaice [31]
3 years ago
15

At 3:00 the temperature in Alaska began dropping at a constant rate. The equation y = –5x – 10 can be used to represent this sit

uation, where y is the temperature below zero and x is the time in hours the temperature has been falling.
Which statement best describes the temperature at 3:00, given this situation?

A. From a starting temperature of 10 degrees below zero, the temperature is rising 5 degrees per hour.

B. From a starting temperature of 10 degrees below zero, the temperature is falling 5 degrees per hour.



C. From a starting temperature of 5 degrees below zero, the temperature is rising 10 degrees per hour.

D. From a starting temperature of 5 degrees below zero, the temperature is falling 10 degrees per hour.
Mathematics
1 answer:
alina1380 [7]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Hope this helps <3

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Solve the system of the linear equation using any method:<br> 2x+5y=4<br> 4x+7y=11
mr_godi [17]
Multiply the first equation by 2:
4x+10y=8
Subtract the second equation from this so the 4x cancels:
3y = -3
y = -1
Plug into first equation:
2x -5 = 4
2x = 9
x = 9/2 = 4 1/2 = 4.5
So (x,y) = (-1,4.5)
3 0
3 years ago
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Carissa’s gerbil has a tail that is the same length as its body length. Its tail is 102 millimeters. How long is her gerbil in c
soldi70 [24.7K]

Answer:

10.2 cm

Step-by-step explanation:

Divide the tail length by 10

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4 0
3 years ago
Mr. Wilson's desk drawer contains 4 black, 3 blue, and 3 red pens. If he selects one pen a random, what is the probability that
gtnhenbr [62]
<h3>Answer:  3/5</h3>

Work Shown:

3 blue + 3 red = 6 pens that are either blue or red

4 black + 3 blue + 3 red = 10 pens total

6/10 = 3/5 is the probability of selecting either blue or red

3/5 = 0.60 = 60%

3 0
3 years ago
an oil change at city auto is regularly $30. Mr. Allen had a coupon for 15% off. He wants to know the sale price of the service.
pshichka [43]

Answer:

he would pay $4.50 for it.

Step-by-step explanation:

all you do is take the $30 and times that by 15% and you get $4.50.

4 0
3 years ago
If you buy six pens and one mechanical pencil, you'll get only $1 change from your $10 bill. but if you buy four pens and two me
xxTIMURxx [149]

Let p be the prize of a pen and m the prize of a mechanical pencils. If you buy six pens and one mechanical pencil, you spend 6p+m. We know that this equals 9, because you get 1$ change from a 10$ bill.

Similarly, if you buy four pens and two mechanical pencils, you spend 4p+2m, which is 8$, because now you get a $2 change. Put these equation together in a system:

\begin{cases} 6p+m=9\\4p+2m=8\end{cases}

Now, if you multiply the first equation by 2, the system becomes

\begin{cases} 12p+2m=18\\4p+2m=8\end{cases}

Subtract the second equation from the first:

12p+2m - (4p+2m) = 18-8 \iff 8p = 10 \iff p = \dfrac{10}{8} = 1.25

Plug this value into the first equation to get

6p+m=9 \iff 6\cdot 1.25 +m = 9 \iff 7.5 +m=9 \iff m = 9-7.5 = 1.5

7 0
3 years ago
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