There are 25 students in a class. 2/5 of them walk to school. Which method is a way to find the number of students who walk to school? Divide 25 by 5 and then multiply the quotient by 2.
Multiply 25 by 5 and then multiply that product by 2.
Multiply 1/25 by 2/5.
Multiply 25 and 5/2.
Answers
The correct option will be Divide 25 by 5 and then multiply the quotient by 2.
What is multiplication?
Multiplication is an operation that represents the basic idea of repeated addition of the same number.
Given that, There are 25 students in a class. 2/5 of them walk to school.
It is given that, 2/5 of the students walks to the school,
That mean, 2/5 part of the total student walks to the school,
Therefore,
25 x 2/5
= 10
Hence, The correct option will be Divide 25 by 5 and then multiply the quotient by 2.
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2/5 = ?/25
2 x 25 =50
50 divided by 5 = 10
So it would be: Divide 25 by 5 and then multiply the quotient by 2.
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What times what equals 78 and what times what equals 125 please explain !!!
A.
9 · n + 7
B.
9 · (n + 7)
C.
9 · (n – 7)
D.
9 · (n · 7)
Answers
Sum implies addition.
We would write this part as n + 7.
Then we would write the "9 times" part in like this:
9 · (n + 7)
We can't write just 9 · n + 7 without the parentheses, because then we would be multiplying just 9 and n instead of 9 and the sum of n and 7. (order of operations says we must do multiplication first)
Answers
Answer:
(2n+6)(n+3)=
(2*n+2*3)(n+3)=
2(n+3)(n+3)=.....(1)
2(n+3)^2=....(2)
2(n^2+2*n*3+3^2) =
2(n^2+6n+9)=....(3)
2n^2+2*6n+2*9=
2n^2+12n+18.... (4)
The Jones building cost 33.8 million
which statement is true when comparing the costs of the two buildings?
A: Keslo cost 2 1/2 times the cost of Jones
B: Jones cost 2/3 the cost of Keslo
C: Jones cost 1/2 the cost of Keslo
D: Keslo cost 3 1/2 times the cost of Jones
Is the answer D?
Answers
Answers
Answer and explanation:
To find : Write a fact family for 2, −5, and −10 ?
Solution :
A fact family is a group of math facts using the same numbers.
In the case of multiplication and division, we bring number together to get the product or divisor.
For 2, −5, and −10
The fact family are,
Answers
Find average rate of change for the first 10 minutes
how many students will be in the auditorium after 15 minutes of filling
Answers
To find the rate of change, we must find the amount of people that have changed over a given time period, and then find the unit rate. As 473-23=450 (we can subtract because we have the end number minus the starting number to find the amount changed) students enter over 10 minutes, and we want to find the rate of change for 1 minute, we can divide 450 10 times. As we move the decimal point of a number 1 to the left when dividing by 10, we have 450.00 -> 45.000 after dividing by 10. Therefore, the average rate of change is 45 students per minute. To find how many students will be in the auditorium after 15 minutes of filling, we can use this average rate of change to figure out approximately how many students will enter in 5 minutes. Therefore, as 45 students come in every minute, after 1 minute, 45 more students will come in. After 2, 45+45=45*2=90 students will come in, and so on. Thus, 45*5=225 students will come in after 5 minutes. Since we know that 473 students are in the auditorium after 10 minutes, we can add 225 to 473 to get 698 students after 15 minutes.
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