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vovangra [49]
3 years ago
13

The average class size at Belmont Middle School is 30 students, which is 25% larger than it was a decade ago. What was the avera

ge class size then?
Mathematics
1 answer:
sergeinik [125]3 years ago
3 0
So what you do is do 25% of 30. Then you divide 25 by 100 so it can be a number. It would be 0.25. Then you time it by 30. 0.25x30=7.5. Ur done there then you minus it by the original number. 30-7.5=22.5. I HOPED I HELPED!!!!
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Any help if possible Thank you ❤
Mariana [72]
v =  \frac{1}{3} \pi {r}^{2} h \\ r = 8 \: cm \\ h = 15 \: cm
From the diagram, we can see that the radius of the cone is 8cm and the height of the cone is 15cm. We then just plug these numbers into the formula and simplify:
v =  \frac{1}{3} \pi {r}^{2} h \\ v =  \frac{1}{3} \pi {(8)}^{2} (15) \\ v = 320\pi
The volume of the cone is approximately 1005.3096 cm^3. With 3 sig figs, this is 1010 cm^3.
3 0
3 years ago
HELPP. Mary and Frank have two bags in front of them. Mary's bag has 4 marbles; blue, yellow, red
FromTheMoon [43]

Answer: 1/12 is the answer

Step-by-step explanation: 3 , 4

1 of those colors so , 1/3 x 1/4 = 1/12!!

i hope that helps <3

7 0
3 years ago
Ben is 4 times old as ishaan. 6 years ago, Ben was 6 times as old as ishaan <br> How old is Ben now?
SpyIntel [72]

Answer:

60years

Step-by-step explanation:

let Ben age = x

ishaan age = y

Ben is 4 times old as ishaan:

x=4y ..........equation (1)

6 years ago

Ben age = x-6

Ishaan age = y-6

x-6=6(y-6)

x-6=6y-36

x=6y-36+6

x=6y-30..........equation (2)

equating equation(1) and (2)

4y=6y-30

4y-6y=-30

-2y=-30

y=-30/-2=15

substituting the value of y into equation (1)

x=4y

=4*15

=60

Ben age now =60years

7 0
3 years ago
1) What is the prime factorization of 195?
White raven [17]

Answer:

C

Step-by-step explanation:

3 0
2 years ago
An arithmetic sequence has this recursive formula: <br> A1=5<br> An=an-1-4
Olenka [21]

Answer:

A recursive formula designates the starting term, a1, and the nth term of the sequence, an , as an expression containing the previous term (the term before it), an-1.Find a recursive formula. This example is an arithmetic sequence (the same number, 5, is added to each term to get to the next term).

8 0
2 years ago
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