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nikklg [1K]
3 years ago
9

Pls help thanks, i’ll give brainliest if you give me a correct answer

Mathematics
1 answer:
Artist 52 [7]3 years ago
7 0

Answer:

1.25*x=5/7 and it will take 1.607 gallons maybe

Step-by-step explanation:

we know he used 1.25 gallons to cover only 5/7 of the fence. we don't know the area of the fence. we use a variable for area. 1.25 gallons of paint times the area of the fenxe equaled 5/7 of the fence getting painted. you'd need more paint for the entire fence. solve for x says that x=0.57 was the area. so now we say that 0.57 only equated to 5/7 but we want 7/7 painted so so we need 2/7 more paint so we multiply 1.25 by 2/7 to find how much per for that area and we get 0.357. add 0.357 to 1.25 to get 1.607

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The sum of thirteen and twice a number is seven less than six times a number. What is the number?
DiKsa [7]
The equation is 2x+6=x-7
then we solve it, 2x-x=-7-6
so x=-13
5 0
3 years ago
Solve simultaneous equations 3x-2y=17 +2x-2y=10
Zarrin [17]

Answer:

(7;2)

Step-by-step explanation:

3x - 2y  = 17 \\  - 2y = 17 - 3x \\ 2x + 17 - 3x = 10 \\ 2x - 3x = 10 - 17 \\  - x =  - 7 \\ x = 7 \\  - 2y = 17 - 21 \\  - 2y =  - 4 \\ y = 2

3 0
3 years ago
Yesterday it took 40 minutes to drive to school. Today is took 32 minutes to drive to
Leokris [45]

Answer:

20%

Step-by-step explanation:

To find the percent decrease, we do old number subtracted from the new numbers over old.

We do

40 - 32 = 8

Then we put the 8 over the old and get

8/40

In percentage form it would be 20%

8 0
3 years ago
If a train travels at 80 mph for 12 min, what is the distance traveled?
AnnyKZ [126]

Answer:

<h2>ANSWER→ </h2>
  • 16 miles
  • 12 minutes is 1 /5 of a hour
  • 80 ÷ 5 is 16
  • or 80x 1.466 =117.28 ft per second
  • 12 minutes x 60 seconds is 720
  • 117.28× 720= 84,441.6
  • 84441.6÷ 5280= 15.992 miles.
7 0
2 years ago
Read 2 more answers
2/(x^2)=4/x+1<br>can any one solve this for me please
levacccp [35]
2/X^2=4/X+1                                   times by both denominators
2(x+1)=4(x^2)
2x+2=4x^2
4x^2-2x-2=0
(2x+1)(2x-2)=0
x=2x+1 or 2x-2
x=-1/2 or 1
5 0
3 years ago
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