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pychu [463]
3 years ago
6

Some people advise that in very cold​ weather, you should keep the gas tank in your car more than half full. Lou​'s car had 6.2

gallons in the 14​-gallon tank on the coldest day of the year. Lou filled the tank with gas that cost ​$3.70 per gallon. How much did Lou spend on​ gas?
Mathematics
1 answer:
zlopas [31]3 years ago
4 0

Answer:

It will cost Lou $28.86 to fill the tank

Step-by-step explanation:

Lou's tank holds 14 gallons.  It has 6.2 gallons in it.  

14- 6.2  = 7.8

Lou can put in 7.8 gallons to fill it.

7.8 gallons and $3.70

7.8 * 3.7 = $28.86

It will cost Lou $28.86 to fill the tank

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How to wirte a linear equation from a graph
astra-53 [7]
Hey there!
I'll assume we're using the slope-intercept form equation:
y = mx + b
m = slope
b = y-intercept
First, we keep the y, because it's value depends on the x value given.
Next, we find the slope. Slope is defined as rise/run, so we take two points on the graph, find how much taller one is from another, and how far right/left they are, put those values over each other, and we have out slope (m).
Finally, we need to determine the y-intercept, and that's as simple as seeing where the line crosses the y axis and writing down that value.
Hope this helps!
8 0
3 years ago
Solve three-halvesx – 4 = 16
Leto [7]
3/2x - 4 = 16

Add 4 to both sides.

3/2x = 20

Multiply by 2/3.

x = 13 1/3
4 0
3 years ago
Sara Blake's grandmother gave her $3000.00 to save for college. She put it in a savings account that earns 6% interest per year.
zubka84 [21]
I assume you are looking for the total. The total amount in the account will be $4,781.54 if the interest is compounded annually.

If she is earning 6% interest, the balance in her account will be multiplied by 1.06 each year.

You can evaluate the following expression to find the total.
3000(1.06)^8 = 4781.54
6 0
3 years ago
PLZ HELP!!
ludmilkaskok [199]

9514 1404 393

Answer:

  y = -3x^2 -9x +30

Step-by-step explanation:

When a polynomial has a zero at x=p, it has a factor of (x -p). The factors of your quadratic are ...

  f(x) = (x +5)(x -2)

At the point x=3, the value of this product is ...

  f(3) = (3 +5)(3 -2) = (8)(1) = 8

In order for that value to be -24, it needs to be multiplied by a scale factor of -3. The quadratic you want is ...

  y = -3(x +5)(x -2)

  y = -3x^2 -9x +30 . . . . . standard form

3 0
2 years ago
Which value of p makes the equation 18+ 2 (3p – 8) = –37 true?
Volgvan

Answer:

p = -6.5

Step-by-step explanation:

<u>Given:</u>

  • 18+ 2 (3p – 8) = –37

<u>Solving for p:</u>

  • 18+ 2 (3p – 8) = –37
  • 18 + 6p - 16 = -37
  • 6p + 2 = -37
  • 6p = -37 - 2
  • 6p = -39
  • p = -39/6
  • p = -6.5

Option 2 is correct in the list

3 0
3 years ago
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