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qaws [65]
3 years ago
6

Which equation represents 4x – 3y = 15 when solved for y

Mathematics
1 answer:
andrey2020 [161]3 years ago
5 0

Answer:

y=4/3x-5

Step-by-step explanation:

4x-3y=15

-4x      -4x

______________

-3y=-4x+15

----    ---  ----       (divide all by -3)

-3     -3   -3

y=4/3x-5

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What’s the expression?
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3 years ago
The initial cost of an office fax machine is $100. After 1 year, its value becomes $80. Which is the correct linear depreciation
Elis [28]

Answer:

y=100-20x

Step-by-step explanation:

Let the x-axis be the time (in years) and the y-axis the value of the fax machine (in dollars).

We know that the initial value of the fax machine is $100; in other words, when the time is zero years, the value is $100, or as an ordered pair (0, 100). We also know that after 1 year the value decreases to $80, so (1, 80).

Now we can find the slope of the line passing through those two points using the slope formula

m=\frac{y_2-y_1}{x_2-x_1}

where

m is the slope

(x_1,y_1) are the coordinates of the first point

(x_2,y_2) are the coordinates of the second point

Replacing values:

m=\frac{80-100}{1-0}

m=-20

Now, to complete our model we are using the point slope formula

y-y_1=m(x-x_1)

where

m is the slope

(x_1,y_1) are the coordinates of the first point

Replacing values:

y-100=-20(x-0)

y-100=-20x

y=-20x+100

y=100-20x

We can conclude that the correct linear depreciation model is y=100-20x

7 0
2 years ago
1. Samantha purchased a cookie(c) and carton of milk. If the milk cost $1.25 and the total amount of the items was $2.50. Which
Sergio039 [100]

Answer:

Step-by-step explanation:

First one is C+1.25=2.50

2.    5V=30

3.     X-44

I hope this helped.

6 0
3 years ago
Read 2 more answers
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Answer:

If 15 dollars covereed the gift then the gift was 15 dollars or less.

Step-by-step explanation:

6 0
3 years ago
Rebecca picked a bunch of flowers from her garden. She gave 19 flowers to her mother. If she now has 34 flowers, how many flower
KonstantinChe [14]
53 flowers were picked.
19 + 34 = 53
6 0
3 years ago
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