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JulijaS [17]
2 years ago
8

The temperature at noon on a winter day was 8°C. At midnight, the temperature had dropped 15°C. What was the temperature at midn

ight?​
Mathematics
2 answers:
Orlov [11]2 years ago
6 0
The correct answer is -7 degrees
Anna35 [415]2 years ago
3 0

Answer:

8-15=-7

the temperature was 7 grade Celsius

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!!!!Pls help!!!!!
hichkok12 [17]

Answer:

(2,4) is a solution to this system of equations

Step-by-step explanation:

Given system of equation are

y=2x \hfill (1)

y=\frac{-1}{2}x+5\hfill (2)

To find the solution of the given system of equations

To Check that (2,4) is a solution to this system or not

Solving equations (1) and (2)

From equation (1) and y=2x

Now substitute y=2x is equation (2)

2x=\frac{-1}{2}x+5

\frac{-1}{5}x+5-2x=0

5-\frac{x}{2}-2x=0

5-\frac{x+4x}{2}=0

5-\frac{5x}{2}=0

\frac{10-5x}{2}=0

10-5x=0

-5x=-10

x=\frac{10}{5}

Substitute x=2 in equation (1)

y=2x

y=2(2)

Therefore y=4

Therefore the solution is (2,4)

Therefore (2,4) is a solution to the system of equations.

4 0
3 years ago
Which of the following expressions is equal to -3X2-27?
ale4655 [162]

Answer: B

Step-by-step explanation:

-3x^2-9xi+9ix-27

-3x^2-27

8 0
3 years ago
What are the zeros of (x-2)(x^-9)
Nostrana [21]
I suspect you may have slipped up as you copied the question. Exactly as you wrote it, it has a single zero, at x= 2 .
8 0
3 years ago
PLEASE HELP WITH MY MATH!!!!!!!!!!!!!!!!!
lozanna [386]

I think it would be c if it were a greater rate I don't know if i am right I'll check back with you guys on the answer

3 0
3 years ago
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How many dots are there at 100 minutes?<br><br> Please show work!<br><br> Thanks!
dusya [7]

500 dots: this is because 1 minute is 5 dots. So, 5×100=500!

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3 years ago
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