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OverLord2011 [107]
3 years ago
12

there are 480 students in a class. the ratio of boys to girls is 1:3 how many students in the class are boys

Mathematics
2 answers:
hichkok12 [17]3 years ago
7 0

Answer:

120

Step-by-step explanation:

480/(1+3)

480/4

= 120

1 × 120 : 3 × 120

120 : 360

Boys to girls are in the ratio 120:360.

There are 120 boys.

igor_vitrenko [27]3 years ago
7 0
The boy to girl ratio is 120:360 therefore the correct answer is 120 boys
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tangare [24]

Answer:

1) 2670m^2

2) 4718 in^2

3) 4730 ft^2

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5) 11 542mm^2

6) 3740m^2

7) 6374m^2

8) 2824 ft^2

9) 6004mm^2

Step-by-step explanation:

Area of a rectangular prism = 2wl + 2lh + 2hw

Where,

w = width

l = length

h = height

1) Area of a rectangular prism = 2wl + 2lh + 2hw

h = 10m; l = 31m; w = 25m

Area = 2(25m)(31m) + 2(31m)(10m) + 2(10m)(25m)

= 2(775m^2) + 2(310m^2) + 2(250m^2)

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2) Area of a rectangular prism = 2wl + 2lh + 2hw

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Area = 2(29in)(35in) + 2(35in)(21in) + 2(21in)(29in)

= 2(1015in^2) + 2(735in^2) + 2(609in^2)

= 2030in^2 + 1470in^2 + 1218in^2

= 4718 in^2

3) Area of a rectangular prism = 2wl + 2lh + 2hw

h = 19 ft; l = 39ft; w = 28ft

Area = 2(28ft)(39ft) + 2(39ft)(19ft) + 2(19ft)(28ft)

= 4730 ft^2

4) Area of a rectangular prism = 2wl + 2lh + 2hw

h = 24,cm; l = 49cm; w = 38cm

Area = 2(38cm)(49cm) + 2(49cm)(24cm) + 2(24cm)(38cm)

= 7900cm^2

5) 11 542mm^2

6) 3740m^2

7) 6374m^2

8) 2824 ft^2

9) 6004mm^2

Note : Kindly follow the same process for the remaining questions, you'd get their correct answers. I can't finish up due to time constraints. However, you may send me a direct message for the remaining answers. Thank you.

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