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Anna007 [38]
3 years ago
8

Find the sum: -21 + (-13) + (-9). A. -43 B. -25 C. 1 D. 4

Mathematics
2 answers:
Akimi4 [234]3 years ago
4 0
The answer is A. -43. All of thos additions of minus values are made substraction afterwards.
Alja [10]3 years ago
3 0
If you would like to solve - 21 + (- 13) + (- 9), you can calculate this using the following steps:

- 21 + (- 13) + (- 9) = - 21 - 13 - 9 = - 43

The correct result would be A. - 43.
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What's a simplified form of x-1+4+7x-3
Dovator [93]
Ok so right now leave the x's alone. Now add/subtract the numbers without variables which would equal to 0 since -1+4 = 3 and 3-3 =0

now 7x+x =8x so 8x is answer
8 0
3 years ago
He counted 206 wheels and 170 pedals. How many bicycles and tricycles does he have.
noname [10]
Bicycle has 2 wheels and 2 pedals
 tricycle has 3 wheels and 2 pedals

EQ 1 : 2b + 2t = 170 pedals

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subtract  EQ 1 from EQ 2

2b +3t = 206 - 2b + 2t = 170 = t=36

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8 0
3 years ago
Please solve <br><br> ??+1/16=3/2
Vladimir79 [104]

Answer:

x = 23/16

Step-by-step explanation:

x + 1/16 = 3/2

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x + 1/16 = 3/2 *8/8

x + 1/16 = 24/16

Subtract 1/16 from each side

x+1/16 -1/16 = 24/16 -1/16

x = 23/16

6 0
2 years ago
Read 2 more answers
If you were calculating the volume of a cube that has a side length of 8 inches, how would you write the calculations in exponen
Dmitry_Shevchenko [17]

Answer:  8^3,  Eight to the third power,  Eight times eight times eight.

6 0
3 years ago
Find the slope of the line in the graph below
Andru [333]
Answer =-3 or -3/1

You can either do rise/run
Or you can find two points on the line and do (y2-y1)/(x2-x1)

Two points on the line are (-1,2) and (-3,-4)
X1=-1 Y1=2
X2=-3 Y2=-4

(y2-y1)/(x2-x1) = (-4-2)/(-3-(-1)) =(-6)/(-3+1)
=-6/-2 = -3

So slope =-3/1 or -3 (same thing)
7 0
3 years ago
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