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butalik [34]
3 years ago
14

In a school of 3200 total students 3/8

Mathematics
1 answer:
dmitriy555 [2]3 years ago
3 0

Answer:

i) Boys:1200; Girls:2000

Boys:37.5%; Girls:62.5%

Step-by-step explanation:

i) Boys: 3200*(3/8) =1200

Girls: 3200-1200 =2000

ii) Boys: (1200/3200)*100%= 37.5%

Girls: 100%- 37.5%= 62.5%

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David can run 4 miles in 75 minutes .what is Davides jogging rate per hour ?
Nina [5.8K]

Answer:

3.2 miles per hour

Step-by-step explanation:

Time=75 minutes=75/60=5/4=1.25 hours

Speed=Distance/time=4/1.25=3.2 miles per hour

David's jogging rate is 3.2 miles per hour.

4 0
4 years ago
Given HIJ ≌ MNO and HI = 15, IJ = 8, and JH = 11, what is OM?
Irina-Kira [14]
I hope im not to late to help but the anwers is 11 because JH and OM the same :)

3 0
3 years ago
Perform the indicated operations; reduce the answer to lowest terms. a. 3⁄10 + 6⁄10 b. 1⁄3 + 1⁄4 + 1⁄6 c. 5⁄6 – 3⁄6 d. 2⁄3 – 6⁄1
Setler [38]

Answer:

a. 3⁄10 + 6⁄10 = 9/10

b. 1⁄3 + 1⁄4 + 1⁄6 = 3/4

c. 5⁄6 – 3⁄6 = 1/3

d. 2⁄3 – 6⁄10 = 1/15

e. 4⁄10 × 3⁄7 = 6/35

f. 1⁄6 × 6⁄15 = 1/15

g. 1⁄8 ÷ 4⁄9 = 9/32

h. 1⁄5 ÷ 3⁄4 = 4/15

Step-by-step explanation:

a. 3⁄10 + 6⁄10

= 3*1 + 6*1 / 10

= 3+6/10

= 9/10

b. 1⁄3 + 1⁄4 + 1⁄6

since denominators are different we take LCM of 3,4,6 which is 12

= 1*4 + 1*3 + 1*2 / 12

= 4+3+2/12

= 9 ÷ 3 / 12 ÷ 3

= 3 / 4

c. 5⁄6 – 3⁄6

= 5 - 3 / 6

= 2 ÷ 2 / 6 ÷ 2 = 1/3

d. 2⁄3 – 6⁄10

LCM of 3 and 10 is 30

= 2 * 10 - 6 * 3 / 30

= 20 - 18 / 30

= 2 ÷ 2 / 30 ÷ 2 = 1/15

e. 4⁄10 × 3⁄7

= 12 ÷ 2 / 70 ÷ 2 = 6/35

f. 1⁄6 × 6⁄15

= 6 ÷ 6/90 ÷ 6 = 1/15

g. 1⁄8 ÷ 4⁄9

= 1/ 8 * 9/4

=9/32

h. 1⁄5 ÷ 3⁄4

=1/5 * 4/3

= 4/15

3 0
3 years ago
Read 2 more answers
Find the value of the variable and GH if H is between G and I. GI = 5b + 2, HI = 4b – 5, HI = 3
LenKa [72]

Answer:

b = 2, GH = 9

Step-by-step explanation:

In this problem we have that

GI=GH+HI

Solve for GH

GH=GI-HI -----> equation A

we have

GI=5b+2 -----> equation B

HI=4b-5 ------> equation C

HI=3 -----> equation D

step 1

Substitute equation D in equation C and solve for b

3=4b-5

4b=3+5

4b=8

b=2

step 2

Find the value of GH

substitute equation B and equation D in equation A

GH=(5b+2)-3

GH=5b-1

substitute the value of b

GH=5(2)-1=9

4 0
3 years ago
Read 2 more answers
Find the area of the polygon
Sonbull [250]

Answer:

14 square units

7 0
3 years ago
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