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Lelechka [254]
3 years ago
7

6.87x + 8x - 1 = 7.3x + 6x - 2 =

Mathematics
1 answer:
Lorico [155]3 years ago
8 0

1. 11s²-21st

2. 4st-t²

3. 2x²+x³

4. 2x+2

5. 9x-3s-2t

6. 95x-1

7. 9x-2

8. 7s

9. 12-10x

10. 33x-4

11. 10t

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X + y = 152,<br><br> 8.5x + 12y = 1,656<br><br> How many hats were sold?
Elodia [21]

Answer:

x = 48 and y = 104

Step-by-step explanation:

Given equations are:

x+y = 152\\8.5x+12y=1656

From equation 1:

x = 152-y

Putting the value of y in equation 2

8.5(152-y)+12y = 1656\\1292-8.5y+12y = 1656\\3.5y+1292 = 1656\\3.5y = 1656-1292\\3.5y = 364\\\frac{3.5y}{3.5} = \frac{364}{3.5}\\y = 104

Now we have to put the value of y in one of the equation to find the value of x

Putting y = 104 in the first equation

x+y = 152\\x+ 104 = 152\\x = 152-104\\x = 48

Hence,

The solution of the system of equations is x = 48 and y = 104

The value of variable which was assumed for number of hats, is the total number of hats.

6 0
3 years ago
2.5x−x 3.8x 0.7x=0.54<br>solve for x
elena55 [62]

2.5x - x + 3.8x + 0.7x = 0.54


ANSWER=   X= 0.09


---Hope I Helped...Have A Wonderful Day...---


6 0
3 years ago
May walks a total of 3 miles to and from the library each week. She said she has walked a total of about 300 miles since she sta
Paha777 [63]

Answer:

Ok, she walks 3 miles to and from the library.

So in total, she walks 3 miles two times, then in one week, she walks 2*3mi = 6miles.

She says that she walked about 300 miles in total.

We must see if 300 miles is a multiple of 6 miles.

300mi/6mi = 50.

This means that she would walk about 300 miles since she started counting if she went to the library and back home exactly 50 times (again, since she started counting).

And she does this once a week, then if she started counting 50 weeks ago, then it is possible,

5 0
3 years ago
What are the two equations that need to be solved to find the solutions for the absolute value equation |3x+5|=x-1
Eduardwww [97]

the 2 equations that need to be solved are [3x+5] and x-1. If you need the answer to what x is you'd solve it by evening out the problems. so first add one to both so you'd have 3x+6=x then you'd take the 3x and subtract it from both sides making it 6=-2x. Then divide 6 by negative 2 making it -3=x.

4 0
4 years ago
Read 2 more answers
Adult tickets to the fall play cost $8 and student tickets cost $4. The drama class sold 30 more adult tickets than student tick
Arada [10]
8a+4s=840
a=s+30
8(s+30)+4s=840
12s+240=840
12s=600
s=50

A=s+30
a=50+30
a=80

The drama play sold 80 adult tickets
8 0
3 years ago
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