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saveliy_v [14]
2 years ago
5

In a school, the ratio of students of class 9 to that of class 10 is 3:2. 30% of the students of class 9 and 10%of the students

of class 10 were elected to the school student committee. What fraction of the total number of students of the two classes was selected to the school student committee?
Mathematics
1 answer:
frez [133]2 years ago
5 0

Answer:

22% of the two classes were elected to the student committee

Step-by-step explanation:

Given

class 9 : class 10 = 3:2 = 60% : 40%

Total fraction = 60% * 30% + 40% * 10% = 18% + 4% = 22%

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Joyce karen and paula are starters on their school basketball team how many different groups of three can be chosen for a newspa
vekshin1

The combination shows that the different groups of three that can be chosen for a newspaper photo is 10.

<h3>How to calculate the value?</h3>

From the information, Joyce, Karen and Paula are starters on their school basketball team.

The information is to illustrate the different groups of three that can be chosen for a newspaper photo.

This will be:

= 5!/3!(5 - 3)!

= 5!/3!2!

= (5 × 4 × 3 × 2 × 1)/(3 × 2 × 2)

= 20/2

= 10

There will be 10 groups.

Learn more about combinations on:

brainly.com/question/4658834

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6 0
1 year ago
The Martinez family is traveling to a play in Richmond. A round trip train ticket costs $8.00. Children under the age of 7 trave
tatuchka [14]

Answer: The Martinex family spent $ 82 for train ride and play tickets.

Step-by-step explanation:

Round trip train cost = $ 8.00

For children it cost $ 4.00.

For adult, ticket for play costs= $ 14.00

For children , ticket for play costs= $ 6.00

Mr. And Mrs. Martinez will go with their children, Ricky, Ramona, and Thomas.

2 adults and 3 children ( only one of them is under 7.)

For train we consider only 1 as child rest as adult.

Train cost =  4 x($ 8.00)+ 1 x ($ 4.00)

= $ 32+4 = $36

For play , total cost = 2 x ( $ 14.00) + 3 x ($6)

= $(28+18)

= $ 46

Total spending ( combined) =  $36+$ 46

= $82

So, the Martinex family spent $ 82 for train ride and play tickets.

8 0
3 years ago
Help I will make you a brainllest
Yuliya22 [10]

Answer:

Y || Z

Step-by-step explanation:

We know that Y⊥B, and Z⊥B, which means both Y and Z are perpendicular to B, meaning that they both create 90° angles with B, and from that, we can make the conclusion that Y || Z

8 0
3 years ago
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A store advertises 15% off an item that regularly sells $300.what is the sale price off the item?
Komok [63]
The original price of the item is said to be 100 dollars.
Now, it offers 15% discount. Let's solve for the dicounted price.
=> 15% = 0.15
Solution:
=> 300 * .15 
=> 45 dollars 
=> 300 dollars - 45 
=> 255 dollars
3 0
2 years ago
Read 2 more answers
Find the dot product of U and V <br><br> u=7i, v = -2i + 5j
alexandr1967 [171]

Answer:

-14

Step-by-step explanation:

Multiply the is together. Multiply the j's together. Add the answer. The answer is a scalar.

(7 × -2) + (5 × 0)

= -14

6 0
2 years ago
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