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evablogger [386]
3 years ago
5

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

Mathematics
1 answer:
Vlada [557]3 years ago
7 0

Answer:

y=3x- 3/2

Step-by-step explanation:

4.2x−1.4y=2.1

Subtract 4.2x from each side

4.2x-4.2x−1.4y=-4.2x+2.1

-1.4y = -4.2x +2.1

divide each side by -1.4

-1.4y/-1.4y = -4.2x/ -1.4 +2.1/-1.4y

y=3x- 3/2

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Choose the equation below that represents the line passing through the point (1, −4) with a slope of one half.
AVprozaik [17]

Answer:

the equation would be y=1/2x-9/2

Step-by-step explanation:

next time try to put the answers like the question did because that's always helpful

6 0
3 years ago
Describe and correct the error a student made when graphing y+5=-3/4(x-8).
Elis [28]
In step 1 the y-intercept should be plotted at (0,-6)
Step-by-step explanation:
Remember that to find the Y intercept in any linear equation you need to use 0 as your X value, this means taking the formula in the y=mx+b form and replacing X with a 0.
Since the formula is y = -3/4x -6
We just insert a 0 insted of the "x"
y = -3/4(0) -6
y=0-6
y=6
So the y-intercept sould be placed in (0,-6)
That's what he did wrong when graphing the equation.
8 0
3 years ago
Solve.
Nat2105 [25]

The solution to the algebraic equation, −0.4x − 3.1 = 5.9, is:<u> x = -22.5</u>

Given the algebraic equation, −0.4x−3.1 = 5.9, to solve for x, follow the steps below:

−0.4x − 3.1 = 5.9

  • Add 3.1 to both sides

−0.4x − 3.1 + 3.1 = 5.9 + 3.1

-0.4x = 9

  • Divide both sides by -0.4

-0.4x/-0.4 = 9/-0.4

x = -22.5

Therefore, the solution to the algebraic equation, −0.4x − 3.1 = 5.9, is:<u> x = -22.5</u>

<u></u>

<u></u>

Learn more here:

brainly.com/question/16864747

7 0
2 years ago
which is typically true regarding loan repayments A. The higher interest rate you receive the lower the total repayment. B. The
jarptica [38.1K]

Answer:

B  

the quicker you pay off the loan, the lower the total repayment.

Step-by-step explanation:

7 0
3 years ago
What is the scale factor?
Fed [463]

Answer:

2

Step-by-step explanation:

it literally doubles in size

5 0
3 years ago
Read 2 more answers
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