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Svet_ta [14]
3 years ago
7

7x-3=-3+7x show your work

Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0
So what you need to do is to put X alone so what you do is +3 on both sides so only 7x=7x is  left. then do the opposite and divide 7 with 7 you get 1x thats your answer
 
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Trudy bought 1 foot of fabric. If she cuts the fabric into 3-inch pieces, how many pieces will she have?
WINSTONCH [101]

Answer:

Trudy will have 4 pieces of the fabric.

Step-by-step explanation:

Since, 1 foot of the fabric = 12 inches

If Trudy cuts the fabric into pieces of 3 inch.

Number of pieces she will have = \frac{\text{Total length of the fabric}}{\text{Length of one piece}}

                                                     = \frac{12}{3}

                                                     = 4 pieces

Therefore, she will have 4 pieces of the fabric.

5 0
2 years ago
Pleaseeeeeeeeeeeee helppppppppppppppppp
Fittoniya [83]
You really just have to do 12.4 x 2 = 24.8 because half of 24.8 is 12.4.
3 0
3 years ago
The table below represents the displacement of a turtle from its nest as a function of time: Time (hours) x Displacement from ne
andriy [413]
Part A: The y-intercept is 5. If you look to the data, when x=0, y=5. This means that the turtle started off 5 miles away from its nest. (at 0 hours, the distance away from his nest was 5 miles)

Part B:Answer=22. Remember, if you take any two distinct points on a line, the slope of the line will be equal to the average rate of change. In short,  we're just looking for the slope between the ordered pairs (1,27) and (4,93). The formula for slope is:

slope= \frac{y_{2}- y_{1} }{ x_{2} - x_{1} } = \frac{93-27}{4-1}= \frac{66}{3}=22

The average rate of change between x=1 and x=4 is 22. The average rate of changed describes the rate at which miles is changing with respect the the change in hour.

Part C: Answer=10hours. Since by now we know both the slope and the y-intercept, lets write the equation in slope intercept form and then solve for 225 miles.

y=mx+b
y=22x+5
225=22x+5
subtract 5 from both sides
220=22x
divide both sides by 22
10=x
It would take 10 hours for the turtle to travel 225miles from it's nest.
4 0
3 years ago
(x+7)(2x+1)=7 solve by using quadratic formula
Olenka [21]
I believe it is x= 7, -2
8 0
3 years ago
20 POINTS!!
Tasya [4]
20^2 + 21^2 = 27^2
400 + 441 = 729
881 = 729 (does not equal)

Not a right traingle
4 0
3 years ago
Read 2 more answers
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