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olga_2 [115]
3 years ago
15

How many solutions does the system of equations below have? Y=-x-3 2y+2x=-6

Mathematics
1 answer:
adell [148]3 years ago
5 0
You can tell that there is only 1 solution because it is a linear system of equations. If you are not convinced, work it out yourself. :)

Hope this helps
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What helpful ways could this practice of gathering data and making predictions be used?
klasskru [66]

Answer:

Methods including water divining, astrology, numerology, fortune telling, interpretation of dreams, and many other forms of divination, have been used for millennia to attempt to predict the future.

Step-by-step explanation:

hope it helps : )

4 0
3 years ago
Find the circumference of a circle with an area of 615.75 square inches.
Fittoniya [83]
A=pie×radius squared is the area formula of a circle. The circumference formula or a circle is C=pie×diameter. 615.75=(3.14)(radius) squared. Divide both sides by the 3.14. What ever 615.75 divided by 3.14 is-is radius squared. The square root is your radius. The radius is half the diameter, so double what you have right now as the radius to get the diameter. Now since C=pie×diameter, your circumference is your pie×your diameter. Whatever your answer is-is your circumference.
3 0
3 years ago
The Price family and the Jenkins family each used their sprinklers last summer. The water output rate for the Price family's spr
PIT_PIT [208]

Set up two equations:

1st:  P (for Price family) + J (for Jenkins family) = 45 hours

2nd: 20P + 35J = 1200 liters

Rewrite the first equation as P = 45 – J

Replace P in the second equation:

20(45-J) + 35J = 1200

Simplify:

900 -20J + 35J = 1200

900 +15J = 1200

Subtract 900 from both sides:

15J = 300

Divide both sides by 15:

J = 300/15

J = 20

Jenkins used theirs for 20 hours

Price used theirs for 45-20 = 25 hours.

7 0
3 years ago
Adam and three friends go on holiday together for a week.
Kazeer [188]

Answer:

590

Step-by-step explanation:

1,460+720+180=2,360

2,360/4=590

HOPE THIS HELPS!!!! :)

8 0
3 years ago
Read 2 more answers
When a number is decreased by 4%, the result is 66. What is the original number to the nearest tenth?
Lynna [10]

Answer:

68.8

Step-by-step explanation:  

100% = x number  

96% = 66  

so 100%  

= 68.75  

to the nearest tenth is 68.8

7 0
3 years ago
Read 2 more answers
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