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Iteru [2.4K]
2 years ago
7

-7x-2y=-13 x-2y=11 solve for x and y

Mathematics
1 answer:
Akimi4 [234]2 years ago
4 0

Answer:

x=3

y=-4

I suggest you use m a t h w a y :)

Step-by-step explanation:

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2-5x=7x-12<br> what is the answer to this solution
Fynjy0 [20]

Answer:

7/6

Step-by-step explanation:

Subtract 2 from both sides and subtract 7 from both sides and get -14/-12x and make the fraction smaller and get 7/6.

4 0
2 years ago
–3(5y – 4) ≥ 17 Solve and graph on a number line thanks
likoan [24]

Answer:

y\leq 1.93

Step-by-step explanation:

  • To know the value that y takes according to the inequation -3(5y-4)\geq 17, we must do some algebra.
  • First of all, we divide both terms by (-3), wich would change the direction of the inequality, as follow: (5y-4)\leq\frac{17}{(-3)} (at this point you should remember that dividing or multiplying an inequation by anegative number changes the direction of the inequality)..
  • This means that (5y-4)\leq 5.67. Then,we just have to add both sides 4, which yields 5y\leq 5.67+4.
  • Then 5y\leq 9.67, which means that, if we divide both sides by 5, we obtain the value of y: y\leq 1.93 (in this case, the direction of inequality does not change because 5 is possitive).

4 0
3 years ago
Which equation has infinitely many solutions?
erma4kov [3.2K]
The fourth one has many
3 0
2 years ago
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Find the scale factor of the dilation. Then tell whether the dilation is a reduction or an enlargement
LiRa [457]

The scale factor is six and the dilation is an enlargement.

5 0
3 years ago
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Answer all for Brainliest (easy math) 5 questions for 30 points
sweet-ann [11.9K]

1) The caterpillar was already at 4.5 feet so 4.5 will be added. If it crawls upwards 38 of an inch every minute and the amount of minutes is not specified, this will be represented as 38x. That means the answer is C. f(x) = 38x + 4.5

2) Substitute the known values into the equation. There are 7 people at $8.25 a person, which is a total of $57.75 <u>I used 7 because he invites 6 friends, plus himself. </u>He only has $50 on his gift card, so he won't have enough to cover the cost. The answer is A.

3) They start out with 40lbs and recieve 120 more. They have 160lbs in total. If they sell 8lbs a day for 5 days, thats 8*5 or 40lbs total. 160 - 40 = 120lbs left after 5 days. I'd say the answers are A, B, and D.

4) I think the answer would be C because 1,500 is used to find the number of grams of isotope present after t years. The number of grams can't be 1,500. I hope that makes sense because I'm not sure how to explain it.

5) The growth factor is 2 (2x, x being the number of hours). Multiply by 15 because the lab has 15 of them. The answer is B. f(x) = 15 * 2x

I hope this helps you! I'm sorry if I got any of them wrong!

7 0
3 years ago
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