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AlladinOne [14]
3 years ago
7

The ratio of boys to girls in a class is 4:5, what fraction of the class is boys

Mathematics
2 answers:
scoundrel [369]3 years ago
8 0
Boys:girls = 4/5

boys = 4/(4+5) = 4/9 of the class
Naya [18.7K]3 years ago
7 0
Total no boys and girls be 4x and 5x
there total students =9x
no of boys by total no of students =4x/9x
4/9
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Please help me! Thank you
Maru [420]

Step-by-step explanation:

5⁰= 1

2–3 means 1/2³

1/8

=0.125

8 0
3 years ago
What is the true solution to 3 In 2+In 8 = 2 In(4x)?<br> 60f<br> Š O OOO<br> TNT 00
alina1380 [7]

Answer:

  x = 2

Step-by-step explanation:

Taking antilogs, you have ...

  2³ × 8 = (4x)²

  64 = 16x²

  x = √(64/16) = √4

  x = 2 . . . . . . . . (the negative square root is not a solution)

___

You can also work more directly with the logs, if you like.

  3·ln(2) +ln(2³) = 2ln(2²x) . . . . . . . . . . . write 4 and 8 as powers of 2

  3·ln(2) +3·ln(2) = 2(2·ln(2) +ln(x)) . . . . use rules of logs to move exponents

  6·ln(2) = 4·ln(2) +2·ln(x) . . . . . . . . . . . . simplify

  2·ln(2) = 2·ln(x) . . . . . . . . . . . subtract 4ln(2)

  ln(2) = ln(x) . . . . . . . . . . . . . . divide by 2

  2 = x . . . . . . . . . . . . . . . . . . . take the antilogs

4 0
3 years ago
Mrs shirman has a bulletin that is 6 feet and 5 feet wide. She has 32 feet of border to go around the edges of the board. Does s
ioda
Yes because the perimeter of the bulletin is 23 feet. this is because to find perimeter you use 2(L)+2(W).
8 0
2 years ago
Determine which of these quantities DOES combine to make 0. A) Buying 24 pencils and giving 22 pencils away B) Losing $20.00 and
EleoNora [17]

D) Picking up 12 kids for a party and then dropping 12 kids off at the pool

6 0
3 years ago
50 POINTS AND BRAINLIEST TO FIRST CORRECT ANSWER
Mademuasel [1]

Step-by-step explanation:

the answers can be A C D C

5 0
3 years ago
Read 2 more answers
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