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Mama L [17]
3 years ago
8

7-y/5=3/4 Solve for y

Mathematics
2 answers:
Ket [755]3 years ago
4 0
\left[y \right] = \left[ \frac{125}{4}\right][y]=[​4​​125​​] this is answer
nadezda [96]3 years ago
4 0

Hi there!

<u>Here are all the steps into solving this equation for "y" :</u>

\frac{7-y}{5} = \frac{3}{4}

Multiply each side of the equation by 5 → (3/4) × 5 = <u>3.75</u>

7 <u>- y</u> = 3.75

Add "y" to each side of the equation → 3.75 + y = <u>3.75 + y</u>

7 = <u>3.75</u> + y

Subtract 3.75 from each side of the equation → 7 - 3.75 = <u>3.25</u>

3.25 = y

OR

3\frac{1}{4} = y


There you go! I really hope this helped, if there's anything just let me know! :)

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4 years ago
Find the equation for the circle with center (-4,-5) and passing through (4,-2)
Sholpan [36]

Answer:

(x + 4)² + (y + 5)² = 73

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (- 4, - 5), thus

(x - (- 4))² + (y - (- 5))² = r², that is

(x + 4)² + (y + 5)² = r²

The radius is the distance from the centre to a point on the circle.

Calculate r using the distance formula

r = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 4, - 5) and (x₂, y₂ ) = (4, - 2)

r = \sqrt{(4+4)^2+(-2+5)^2}

  = \sqrt{8^2+3^2}

 = \sqrt{64+9} = \sqrt{73} ⇒ r² = 73, thus

(x + 4)² + (y + 5)² = 73 ← equation of circle

6 0
3 years ago
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Create a step function for the following graph, be sure to watch holes in the graph. NEED HELP ASAP!
Svetllana [295]

Answer:

See below

Step-by-step explanation:

This is a piece-wise function.

         4, -4≤ x ≤ -2

f(x) =  2,  -2 ≤ x < 2

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6 0
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#13 please help solve this
rusak2 [61]

Answer:

The change in the total cost for each book printed is $10

The cost to get started is $1250

Step-by-step explanation:

In the linear equation y = m x + b, where

  • m is the rate of change per unit
  • b is the initial amount (value y at x = 0)

∵ y represents the total cost of publishing a book in dollars

∵ x represents the number of copies of the book printed

∵ y = 1250 + 10 x

- Compare it with the linear equation y = m x + b

∴ m = 10

∴ b = 1250

∵ m = Δy/Δx

- That means m is the change in the total cost per book

∴ The change in the total cost for each book printed is $10

∵ b is value y at x = 0

- That means b is the cost to get started before print any book)

∴ The cost to get started is $1250

5 0
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Answer:

x=0,3

Step-by-step explanation:

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