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Drupady [299]
4 years ago
9

Describe how to model -3x + 7 =28 with algebra tiles

Mathematics
2 answers:
Natasha_Volkova [10]4 years ago
4 0

Answer:

-7

Step-by-step explanation:

-3x + 7 =28

3x = -21

x = -7

myrzilka [38]4 years ago
3 0
Subtract 7 to 28 = 21 then divided by -3 = x= -7
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How would I solve this?
Svetradugi [14.3K]
First ln on both sides to bring down the powers.
Ln and e cancel each other out.
3x +2 = 3
3x = 1
x = 1/3
6 0
3 years ago
1. Which situation could be represented by y = 4x + 7?
Sunny_sXe [5.5K]

Answer:

  1. B, A package costs $7 plus $4 per pound to ship.
  2. B, y = 2x - 2
  3. B, y = -1/3x + 3
  4. C, y = 2x + 1
  5. B, y = 60x + 40
  6. D, 14 weeks (600 = 40 + 40x)
  7. Sam, ($13hr)

<em>i hope this helps, good luck :)</em>

5 0
3 years ago
Which system of equations does this graph represent?
jeyben [28]

Answer:

1

Step-by-step explanation:

First, we can find the equation of the parabola. The standard form of a parabola is ax^2 + bx + c,

where c is the y-intercept. The y-intercept on the graph is -5, and every option starts with x^2, so the equation must be x^2 - 5. This rules out options 3 and 4.

Next, we can find the equation of the line. The options are all given in slope-intercept form: y = mx + b, where b is the y-intercept. The y-intercept on the graph is 1, and option 1 has 1 in the place of b. Therefore, option 1 is the answer.

7 0
3 years ago
Find the equation of the line.
Lapatulllka [165]
Y= -3x+7 im pretty sure this is the answer
8 0
4 years ago
A retiree invests $9,000 in a savings plan that pays 5% per year. What will the account balance be at the end of the first year
densk [106]
Using the formula I=Pxrxt
P is the principal amount, $9000.00.
r is the interest rate, 5% per year, or in decimal form, 5/100=0.05.
t is the time involved, 1....year(s) time periods.
So, t is 1....year time periods.
To find the simple interest, we multiply 9000 × 0.05 × 1 to get that:

The interest is: $450.00
So the balance will be $9450.00 at the end of the first year.
4 0
3 years ago
Read 2 more answers
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