Find the value of y in the equation 3/y-2=8

Answers

Answer 1

Answer: If you would like to find the value of y in the equation 3/y - 2 = 8, you can do this using the following steps:

3/y - 2 = 8
3/y = 8 + 2
3/y = 10 /*y
3 = 10y /10
y = 3/10

The correct result would be 3/10.

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John has $80. Every week, he spends $7.Create an equation that represents How much money, m, in dollars, will he have after the fourth week? Enter the equation and the answer on separate lines. (Will give brainliest)

Answers

Answer:

7x+80

Step-by-step explanation:

x represents the number of weeks

David wants to hang a mirror in his room. The mirror and frame must have an area of 8 square feet. The mirror is 2 feet wide and 3 feet long. Which quadratic equation can be used to determine the thickness of the frame, x?Square with an inner frame with height of 2ft on the left frame and width of 3ft on the top. Arrow on the bottom frame with an x and an arrow on the right frame with an x.

2x2 + 14x − 2 = 0
3x2 + 10x − 8 = 0
4x2 + 10x − 2 = 0
x2 + 7x − 8 = 0

Answers

Represent the thickness of the frame by x. Framing the mirror will increase both its length and width by 2x. The area of the mirror with the frame is the product of the length and width which can mathematically be expressed as,

A = (3 + 2x)(2 +2x) = 8

The equation above can be simplified into 4x^2 + 10x -2 = 0. This equation can still be further simplified by dividing it by 2. However, it will give an answer which is not found on the choices. Thus, the answer is the third choice.

Answer:

The answer above is correct i took the test

Step-by-step explanation:

Henry took out a 4 year loan for 5,000 and payed 4.2% simple annual interest. Ingrid took out a 6 year loan for 5,000 and payed 3.9% simple annual interest. What is the difference between the mounts of interest Henry and Ingrid payed for their Loans

Answers

Answer:

Ingrid pays 330 more than Henry.

Henry pays 330 less than Ingrid.

Step-by-step explanation:

SI = Simple Interest

P = Principal

R = Rate

T = TIme

Henry

=> SI = P x R x T / 100

=> SI = 5,000 x 4 x 4.2 /100

=> SI = 50 x 4 x 4.2

=> SI = 200 x 4.2

=> SI = 840

Ingrid

=> SI = P x R x T / 100

=> SI = 5,000 x 6 x 3.9 / 100

=> SI = 50 x 6 x 3.9

=> SI = 300 x 3.9

=> SI = 1170

1170 - 840

=> 330

Ingrid pays 330 more than Henry.

840 - 1170

=> -330

Henry pays 330 less than Ingrid.

A standard showerhead in Andrew's house dispenses 8 gallons of water per minute. Andrew changed this showerhead to an energy-saving one. The equation shows the amount of water dispensed, y, as a function of the number of minutes, x, for the new showerhead.y = 3x

How much water does Andrew save each day with the change in showerheads if he uses the shower for 8 minutes each day?

5 gallons
16 gallons
24 gallons
40 gallons

Answers

64-24 = 40

D) 40 gallons

Answer:

40 gallons

Step-by-step explanation:

OLD SHOWERHEAD

y=8x

y=8(8)

y=64

NEW SHOWERHEAD

y=3x

y=3(8)

y=24

64-24=40

Hope it helps!!!!

BTW it was correct in the test!

PLEASE HELP ASAP I ONLY HAVE TILL 4:30 TO FINISH THREE TESTS!A film set designer is using white and colored tiles in a pattern to create paths of different lengths. If x is the length of the path in feet, the number of colored tiles needed to make it is calculated using the rule

(4x2y3)(3x2y2)

where y represents the number of white tiles.

Which simplified expression represents the number of colored tiles used for a path of length x feet?

7x4y5
7x4y6
12x4y5
12x4y6