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Dahasolnce [82]
3 years ago
7

The temperature of pot of water fell from 72 degrees to 36 degrees in 4 minutes. Find the average change in temperature per minu

te.
Mathematics
1 answer:
Sedaia [141]3 years ago
8 0
I believe the change in temperature by minute is 9
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What is the slope of the line that contains (1,6) and (1,-9)
Alika [10]
M= (y2-y1)/ (x2-x1)

Plug the points in.

-9-6/1-1

-15/0 or -15. The slope of the line is -15.

I hope this helped you!

Brainliest answer would be greatly appreciated!
7 0
3 years ago
Read 2 more answers
Find the length of each hypotenuse such that KMN = LMN
Mrac [35]
If triangle KMN is congruent with triangle LMN, then:
1) KM must be congruent with LM→KM=LM→
x+2y=3x-y→x+2y-x-2y=3x-y-x-2y→0=2x-3y→2x-3y=0   (1)

2) KN must be congruent with LN→KN=LN→
5x+3y=8x-7→5x+3y-5x-3y+7=8x-7-5x-3y+7→7=3x-3y→3x-3y=7  (1)

We have a system of two equations and two unkowns:
(1) 2x-3y=0
(2) 3x-3y=7

Subtracting equation (1) from equation (2)
(3x-3y)-(2x-3y)=7-0
3x-3y-2x+3y=7
x=7

Replacing x=7 in equation (1)
(1) 2x-3y=0→2(7)-3y=0→14-3y=0→
14-3y+3y=0+3y→14=3y→14/3=3y/3→14/3=y→y=14/3

The length of the hypotenuse is:
KN=5x+3y=5(7)+3(14/3)=35+14→KN=49
or
LN=8x-7=8(7)-7=56-7→LN=49

Answer: Option C. 49


7 0
3 years ago
3 a. It takes Adriana 20 minutes to walk 5 blocks to the library. Complete the table of equivalent ratios to show Adriana’s two
Dafna11 [192]

Answer:

It takes 4 minutes per block and she can walk 12.5 blocks in 45 minutes.

Step-by-step explanation:

20 / 5 = 4 minutes per block

20 + 20 + 5 = 45

5 + 5 + 2.5 = 12.5

Hope this helps, I did the test last year.

6 0
2 years ago
Two sides of a triangle measure 10 inches and 13 inches. The included angle between these sides is 55°. What is the approximate
PolarNik [594]
The answer should B 11.2 inches
4 0
2 years ago
Which of the following statements best describes the location of −(−5) on a number line?
Korolek [52]
Hello,

-(-5) is also known as just a plain positive 5. When two negatives are multiplied together, they make the number positive. So, the location of -(-5) on a number line would be on the number 5. I hope this helps!

May
8 0
3 years ago
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