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olasank [31]
3 years ago
11

In a class of 30 students, 6 have a brother and 12 have a sister. There are 14 students who do not have any siblings. What is th

e probability that a student chosen randomly from the class has a brother and a sister?
Mathematics
1 answer:
NeTakaya3 years ago
6 0

Answer:

32 siblings from the class theres a possibility that some students had more siblings and not everyone has one

Step-by-step explanation:

.

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Diana works at a clothing store. She sold 1/3 of the total shirts on Tuesday and 5/12of the total number of blue shirts on Wedne
Gre4nikov [31]

Answer:

The fraction of blue shirts that she sold is \frac{3}{4}

Step-by-step explanation:

She sold:

1/3 on Tuesday.

5/12 on Wednesday.

What fraction of blue shirts did she sell on Tuesday and Wednesday?

Sum of fractions.

The lesser common multiplier between 3 and 12, which is 12.

So

\frac{1}{3} + \frac{5}{12} = \frac{\frac{12*1}{3} + \frac{12*5}{12}}{12} = \frac{4 + 5}{12} = \frac{9}{12} = \frac{3}{4}

The fraction of blue shirts that she sold is \frac{3}{4}

8 0
3 years ago
Decide whether the expression has been simplified correctly.
Alexeev081 [22]

Answer:

No.

Step-by-step explanation:

According to the law of exponent:-

\displaystyle \large{( \frac{a}{b}) ^{m}   =  \frac{ {a}^{m} }{ {b}^{m} }  }

Therefore:-

\displaystyle \large{( \frac{a}{4} )^{5} =  \frac{ {a}^{5} }{ {4}^{5} }  }

6 0
3 years ago
The garden warehouse delivered 1500 lbs of topsoil in 5 lbs bags to the garden shop. The garden shop sold half of the bags the s
Marat540 [252]
1500÷5=300 5lbs bags 300÷2= 150 bags left
5 0
3 years ago
Read 2 more answers
A spinner used in a board game is divided into 12 equally sized sectors. Seven of these sectors indicate that the player should
xeze [42]

Answer:

20.8 inches squared

Step-by-step explanation:

Area of spinner:

45.1 is the area of sectors where the token doesn't move, which 5 sectors doesn't move the token (don't forget that the bonus points doesn't move token). Then

45.1/5=9.02

9.02*12=108.24

K=1/2(r^2)sin150

108.24=1/2(r^2)sin150

216.48=(r^2)1/2

432.96=r^2

r=20.8

7 0
3 years ago
Find the amount of simple interest:I=PxRxT<br><br> $1,600 at 3% for 1 year
nirvana33 [79]
I=PRT, P=$1600 R=3% T=1yr
=1600x(3/100)x1
= $48.00
4 0
3 years ago
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