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Phantasy [73]
3 years ago
15

Araceli uses 7.7 pints of white paint and blue paint to paint her bedroom walls.

Mathematics
1 answer:
Dima020 [189]3 years ago
5 0

Answer:

3.08

Step-by-step explanation:

1 - 3/5 = 2/5

2/5 x 7.7 = 3.08

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Robert makes 50 litres of green paint by mixing litres of yellow paint and litres of blue paint in the ratio 2:3.
podryga [215]

Answer:

  • 35%

Explanation:

<u>1. Cost of each liter of yellow paint:</u>

Yellow paint is sold in 5 litre tins and ach tin costs £26, thus the cost of one liter is £26 / 5 liters = £5.2 per liter.

<u>2. Cost of each liter of blue paint:</u>

Blue paint is sold in 10 litre tins and each tin costs £48, thus the cost of one liter of blue paint is £48 / 10 liters = £4.8 per liter

<u>3. Cost of each liter of green paint.</u>

Green paint is made by mixing yellow paint and blue paint in the ratio 2:3

Thus, 5 liters of green paint will cost:

2 liters yellow paint: 2 liter × £5.2 / liter = £10.4

3 liters blue paint:     3 liter × £4.8 / liter = £14.4

                                 ==========              ========

5 liters green paint:   5 liter                        £24.8

Cost of one liter of gree paint: £24.8 / 5 liter = £4.96 / liter

<u>4. Profit</u>

Price of each liter of green paint: £66.96 / 10 liters = £6.696 / liter = £6.70 / liter

Profit per liter = price per liter - cost per liter = £6.70/liter - £4.96 / liter = £1.74 / liter

Percentage profit = profit per liter / cost per liter × 100

Percentage profit = (£1.74 / liter) / (£4.96/liter) × 100 =  35.08% = 35%

4 0
4 years ago
How do you solve x- 17 =23
Reptile [31]

x-17= 23

move -17 to the other side

sign changes from -17 to +17

x-17+17= 23+17

x= 23+17

Answer:

x= 40

8 0
3 years ago
Read 2 more answers
What percent of 80 is 16
igor_vitrenko [27]

Answer:

20

Step-by-step explanation:

set a proportion

16               x

____  = ______

80           100

by doing this you can cross multiply the terms

80x=1600

divide both sides by 80

x=1600/ 80=20

7 0
3 years ago
Read 2 more answers
Frank is constructing the circumscribed circle for △XYZ. He has already used his compass and straightedge to complete the part o
Tom [10]
Circumscribed circle for a triangle is circle where the circumference would cut all the vertices in the triangle 
the diagram already has arcs marked from point Y, with the aim of drawing a perpendicular bisector to line XY.

Therefore the next step is to place the compass on point X and draw two arcs which cross the arcs already drawn (second option is the correct answer)

The points at which the 2 arcs meet are connected to each other making a perpendicular bisector that would cut XY perpendicularly.

Next step is to place the compass at Z and draw 2 arcs between Z and Y points, similarly place the compass at Y and draw 2 arcs that would cut the arcs already drawn. 

Then connect the two points where the arcs meet and thats the perpendicular bisector of ZY.
The point at which perpendicular bisectors of XY and YZ meet is known as the circumcenter. Place the compass on this point with the radius any of the three points X,Y or Z and draw the circle

7 0
3 years ago
Read 2 more answers
Three friends jogged last month. Richard jogged 9 miles last month. Jenna jogged 2 times as many as Richard. Brian jogged 4 time
gavmur [86]

Answer:

richard = 9

jenna = 9x2, jenna = 18

brian = 9x4 brian = 36


7 0
3 years ago
Read 2 more answers
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