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swat32
3 years ago
8

You buy the same number of brushes, rollers and paint cans. Write an expression in simples form that represents the total amount

of money you spend for painting supplies. Paint $21.79
Brush $3.99 and Paint Roller $6.89
Mathematics
2 answers:
jeyben [28]3 years ago
4 0
T= 21.79x + 3.99x + 6.89x where t is the total cost and x is the number of brushes/rollers/paint cans you buy. You don't need a different variable for each item because you buy the same amount of each.
yaroslaw [1]3 years ago
3 0
<span>If you purchase of each item, then you'll pay  3.99N  for brushes,</span>
<span>21.79N  for cans of paint, and  6.89N  for rollers. </span>
<span>                      3.99N + 21.79N + 6.89N</span>

<span>                 =  N (3.99 + 21.79 + 6.89)</span>

<span>                 =      </span><span>  32.67 N</span><span> .</span>
<span> </span>
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the sum of three numbers is twenty. the second number is four times the first and the sum of the first and third is eight. what
8090 [49]
Let's call the three numbers x, y, and z. 


The numbers are 3, 12, and 5.
x + y + z = 20
y = 4x
x + z = 8
We can rewrite the first equation because y is 4x, so 
x + 4x + z = 20
5x + z = 20
And now we can use simultaneous equation rules to solve

5x + z = 20
x + z = 8

5x + z = 20
5x + 5z = 40
(subtract)
-4z + -20
÷ -4
z = 5

x + z = 8
x + 5 = 8
x = 3

y = 4x
y = 4 × 3
y = 12

I hope this helps!
4 0
3 years ago
Next week the store is going to reduce the price from $42 to $31.50. Calculate what percent the sale price is of retail price.
Studentka2010 [4]

Answer:

13.23 is 31.50 percent of 42 and the price they dropped down was $10.5

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
Your class is taking a trip to a museum that is 190 miles away. The bus can travel at 55 miles per hour. At least how many hours
Fofino [41]

Answer:

3 hours and 45 minutes

Step-by-step explanation:

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8 0
3 years ago
(2m - 5m^3 ) - (5m + 3m^3- 7m^4 ) + (8 - 3m^3- 5m^4+ 4m)
Tresset [83]

Answer:

2m^4 - 11m³ + m + 8

Step-by-step explanation:

(2m - 5m³) - (5m + 3m³ - 7m^4) + (8 - 3m³ - 5m^4 + 4m)

2m - 5m³ - 5m - 3m³ + 7m^4 + 8 - 3m³ - 5m^4 + 4m

7m^4 - 5m^4 - 5m³ - 3m³ - 3m³ + 2m - 5m + 4m + 8

2m^4 - 11m³ + m + 8

6 0
3 years ago
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PLS HELP SHOW ALL YOUR WORKING OUT AND THE CORRECT ANSWER WILL RECIEVE BRAINLIEST
EastWind [94]
So the length is 4*28=112mm
The width would be calculated like this:

you draw an equilateral triangle in the middle with sides or 2r(56mm). The based on pythagorean theorem u know that
h=rad(56^2-28^2)=48.497
28+28+h=104.497

The area would be S=l*w which is 11703.7113mm

5 0
3 years ago
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