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kykrilka [37]
3 years ago
12

Which property should be used next in this solution process? 3x+2+3=7(x-1)-4. 3x+5=7(x-1)-4

Mathematics
1 answer:
Vikki [24]3 years ago
5 0
Distributive property
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7(x+3)=-2(x-5) <br> Help pls?
olganol [36]

Answer:

x = -11/9

Step-by-step explanation:

7(x+3)=-2(x-5)

Distribute

7x+21 = -2x+10

Add 2x to each side

7x+21 +2x = -2x+10+2x

9x +21 = 10

Subtract 21 from each side

9x +21-21 = 10-21

9x = -11

Divide each side by 9

9x/9 = -11/9

x = -11/9

3 0
3 years ago
Read 2 more answers
Plz help me this isn’t that hard but I’m struggling so plz I don’t want another detention
Olenka [21]

Answer:

The length of the total 8 pieces in 0.8 meters = 6.4 meters

How many pieces there are in the remaining 0.4 meter = 6.5

Step-by-step explanation:

0.8 x 8 = 6.4

9 meters - 6.4 meters = the remaining 2.6 meters

2.6 x 0.4 = 6 1/2 pieces of ribbon in 0.4 meters.

5 0
3 years ago
Your math teacher tells you that the next test is worth 100 points and contains 38 problems. Multiple-choice questions are worth
rusak2 [61]
If we assume that
x isthe number of multiple choice questions, and y is the number of word problems, we can write a system of equations like:
{ x + y = 38
{ 2x + 5y = 100

If we multiply the first equation by -2 we get:
{ -2x-2y = -76
{ 2x + 5y = 100

Now if we add both equations we get only equation with 1 unknown (y) :

3y = 24 ⇒ y = 8

Substituting the calculated value to the first equation we get:

x + 8 = 38 ⇒ x = 30

The solution:
{ x = 30
{ y = 8

means that:
The test had 30 multiple choice questions, and 8 word problems.
4 0
3 years ago
What is the slope of the line shown below?
GaryK [48]

Answer:

2/3

Use the rise over run formula and then simplify

3 0
2 years ago
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PLEASE HELP 20 POINTS PLEASE HELP BROOO
Ulleksa [173]

Answer: 31700 sq mi

Step-by-step explanation: Well in order to find out the sq mi for Lake Superior you will add 7340 and 24360 which equals 31700 sq mi.

7 0
2 years ago
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