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Ludmilka [50]
3 years ago
6

Evaluate x+x-x for x=4

Mathematics
1 answer:
sattari [20]3 years ago
4 0

Answer:

4

4+4-4=4 im not sure actually D:

You might be interested in
Simplify the expression 2x+3(x-6)
Bingel [31]

Answer:

5x-18

Step-by-step explanation:

2x+3x-18

5x-18

if ur in college how do u not know this :P

8 0
2 years ago
Karen spends $450 on monthly bills. Of this total amount, 12% is for phone service, 1/10 is for internet service, and 2/9 is for
finlep [7]
12%= 0.12 = 12/100 = 108/900
1/10 = 90/900
2/9 = 200/900

108/900 + 90/900 + 200/900 = 398/900 used

900- 398 = 502

502/900 = 251/ 450

251/450 × 450 = 251


Karen has $251 for food
4 0
3 years ago
If lines A and B are parallel and angle 6 has a measure of 127°, what is the measure of angle 8?
RUDIKE [14]

If line A and B are parallel, then both angle 6 and 8 are corresponding angles, which mean they are the same.

SInce angle 6 is 127 degrees, then angle 8 is also 127 degrees

8 0
3 years ago
Determine the total cost of 5.75 pounds of jellybeans using a proportion
Yuliya22 [10]
X=number of pounds
y=cost of pound .
x+y=cost
3 0
3 years ago
During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $333. The next month, 400 u
Mice21 [21]

Answer: the cost per unit of gas is $0.28

Step-by-step explanation:

Let x represent the cost per unit of electricity.

Let y represent the cost per unit of gas.

During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $333. This is expressed as

500x + 100y = 333 - - - -- - -- - -- -1

The next month, 400 units of electricity and 150 units of gas were used for a total cost of $286. This is expressed as

400x + 150y = 286 - - - - - - - - - --2

Multiplying equation 1 by 400 and equation 2 by 500, it becomes

200000x + 40000y = 133200

200000x + 75000y = 143000

Subtracting, it becomes

- 35000y = - 9800

y = - 9800/- 35000

y = 0.28

Substituting y = 0.28 into equation 2, it becomes

400x + 150 × 0.28 = 286

400x = 286 - 42 = 244

x = 244/400 = 0.61

7 0
3 years ago
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