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Charra [1.4K]
3 years ago
8

Solve the equation for y. 4.2x-1.4y=2.1

Mathematics
1 answer:
beks73 [17]3 years ago
4 0

Add the opposite of the term not containing y, then divide by the coefficient of y.

... -1.4y = 2.1 -4.2x

... y = -3/2 +3x

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Step-by-step explanation:

6 0
3 years ago
Peter needs to build a fence around his small garden. The length of the fence can be no more than 10 ft., and he has 50 ft. of f
dsp73

Answer:

A backyard farmer wants to enclose a rectangular space for a new garden. She has purchased 80 feet of wire fencing to enclose 3 sides, and will put the 4th side against the backyard fence. Find a formula for the area enclosed by the fence if the sides of fencing perpendicular to the existing fence have length

L.

In a scenario like this involving geometry, it is often helpful to draw a picture. It might also be helpful to introduce a temporary variable,

W, to represent the side of fencing parallel to the 4th side or backyard fence.

Since we know we only have 80 feet of fence available, we know that

L + W + L = 80, or more simply, 2L + W = 80. This allows us to represent the width, W, in terms of L: W = 80 – 2L

Now we are ready to write an equation for the area the fence encloses. We know the area of a rectangle is length multiplied by width, so

A = LW = L(80 – 2L)

A(L) = 80L – 2L2

This formula represents the area of the fence in terms of the variable length

L.

Step-by-step explanation:

it's in the answer

6 0
3 years ago
Change to standard form 2.57x10^-4
katrin2010 [14]
It's the mean of (2.57 x 10) minus 4
The mean is the average.
7 0
3 years ago
Read 2 more answers
What is the rate of change of the line on the graph below?
Whitepunk [10]
The rate of change on the line is x line goes to the right and y line goes upward
5 0
3 years ago
Read 2 more answers
A used car is priced at $2,695. If you borrow the money for the car, your payments will be $122 a month for 30 months. How much
Studentka2010 [4]

Answer: $965

Step-by-step explanation:

The used car is priced at $2,695.

If you borrow the money for the car, your payments will be $122 a month for 30 months. This means that the total amount of money that you would have paid at the end of 30 months at a rate of $122 per month is the amount paid per month multiplied by the total number of months. It becomes

Total payment = 122×30 = $3660

This means that you ended up paying higher than you would have paid if you paid cash.

Amount that you would have saved = amount paid over 30 months - cost of the car

Amount that you would have saved

= 3660 - 2695 = $965

7 0
3 years ago
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