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taurus [48]
3 years ago
5

A student evaluated −4 + (−9 12) and got an answer of 5 1/2. What might the student have done wrong?

Mathematics
1 answer:
777dan777 [17]3 years ago
3 0

Answer:

The student added +4 instead of -4 so instead of getting -13 1/2 they got 5 1/2 somehow since even if they did that it should be -5 1/2.

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Need HELP!!! For all, I’m truly confused
Nataliya [291]

Answer:

Step-by-step explanation:

The figures dont have enough letters to explain step by step all the exercises.

Bread 1:

The horizontal lines are parallels so both angles must be the same

2x + 21 = 4x - 17

21 + 17 = 4x - 2x

38 = 2x

x = 19

Bread 2:

Angles sum 180°

3y - 5 + 2y - 25 = 180

5y - 30 = 180

5y = 180 +30

5y = 210

y = 42

Bread 3:

Angle ABC is the same as the other 2, since x = 19

ABC = 2x + 21

ABC = 2 * 19 + 21

ABC = 59

Bread 4:

Angle ABC is the same as 3y - 5, y = 42

ABC = 3y - 5

ABC = 3 * 42 -5

ABC = 121

Bread 5:

Angles must be the same

5x - 14 = 2x + 13

5x - 2x = 13 + 14

3x = 27

x = 9

Bread 6:

Angle ABC = 5x - 14 , x = 9

ABC = 5 * 9 - 14

ABC = 31

If you need to understand why the angles must be the same just comment and I will give you more details

8 0
3 years ago
88 pointtttsss for the right answerr
Basile [38]

\frac{4 ^{9} }{4 ^{3} }
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drag down the 4

ANSWER should be 4^6
3 0
3 years ago
Read 2 more answers
1. What digit is in the tenths place when 12.03 is<br> multiplied by .74?
ioda

Answer:

9

Step-by-step explanation:

12.03 x 0.74=8.9022

the first number after the decimal is the tenths place, the second is the hundreths, the third is the thousandths. Excuse my spelling Im 13.

5 0
3 years ago
susan mountain elevation is 1530 meters. After 4 hours of climbing down to her elvationis 680 meters. What is susans avarge chan
RideAnS [48]
2,650 meters per hour
8 0
2 years ago
PLLLLLLSSSSSs helpppppppp
Citrus2011 [14]

Answer:

x = 40

y = 62

Step-by-step explanation:

I figured out the answer by finding the x on the left triangle first by writing an equation:

(3x - 18) + (x + 7) + (x - 9) = 180

once I worked that I plugged in the number which was 40.

Then for the triangle to the right I also plugged in the numbers for x and got 118 degrees I took 180 and subtracted 118 to get my answer of 62 for y.

5 0
3 years ago
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