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bekas [8.4K]
4 years ago
8

The model represents an equation. What value of x makes the equation true?

Mathematics
1 answer:
Slav-nsk [51]4 years ago
5 0

Answer:

A) 29/8

Step-by-step explanation:

On the left side of the equals sign, we have five x's and nine -1's.

On the right side of the equals sign, we have three -x's and twenty 1's.

Both sides are equal, so:

5(x) + 9(-1) = 3(-x) + 20(1)

5x − 9 = -3x + 20

Add 3x to both sides.

8x − 9 = 20

Add 9 to both sides.

8x = 29

Divide both sides by 8.

x = 29/8

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The Amaco Middle School bookstore sells pencils costing a whole number of cents. Some seventh graders each bought a pencil, payi
vodka [1.7K]

Answer:

12

Step-by-step explanation:

4 0
2 years ago
1. Write an equation in point-slope form for the line through the given point with the given slope.
ElenaW [278]

Answer: y + 2 = \frac{-1}{2} ( x - 4 )

Step-by-step explanation:

The equation of a line in point - slope form is given as ;

y - y_{1} = m (x -  x_{1})

x_{1} = 4

y_{1} = -2

m = \frac{-1}{2}

Substitute the values into the equation , we have

y - (-2) = \frac{-1}{2}( x - 4 )

y + 2 = \frac{-1}{2} ( x - 4 )

Which could be written as :

y + 2 = y + 2 = \frac{-1}{2} x + 2

8 0
3 years ago
A bag contains 25 balls 20 of which are blue what percentage of balls are not blue
Artist 52 [7]

Answer:

20%

Step-by-step explanation:

20/25 = blue

This means 5/25 of the balls in the bag are NOT blue

(25-20 = 5)

We need to convert 5/25 to a percentage

\dfrac{5}{25} = \dfrac{5\times4}{25\times4}=\dfrac{20}{100}

% = per cent

"per" means "out of"

"cent" means "one hundred"

so

20/100 = 20%

7 0
2 years ago
If a line crosses the y-axis at (0, 1) and has a slope of , what is the equation of the line?
defon
5y - 4x = 5
5y = 4x + 5
y = 4/5x + 1.....slope of 4/5 and y intercept of (0,1)
6 0
3 years ago
The coin collection has 60 quarters. This is 25% of the coins. How many coins are in this collection?
maw [93]

Answer:

240

Step-by-step explanation:

If it is 25% then if you multiply by 4 the 25% becomes 100% so you also multiply 60 by 4 and get 240

8 0
3 years ago
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