Answer:
24
Step-by-step explanation:
Average = total number of coins / number of students
If the mean number of coins with boys is 14, the total number of coins held by boys = 14 x 9 = 126
The total number of coins held by the students = total number of children x average number of coins held by the children
15 x 18 = 270
The total number of coins held by girls = 270 - 126 =144
The mean number of coins for the girls = 144 / 6 = 24
Answer:
and 20.5x
and 6.2y
Step-by-step explanation:
-3-x/5+6.2y+20.5x-3/8y
We are given an expression with 5 terms
The terms that has same variables with same exponent are like terms. WE combine only like terms. Constants are also like terms.
In the given expression , the fractions and 20.5x have same 'x' . so they are like terms. we can combine these terms.
the fractions and 6.2y have same 'y' . so they are like terms. we can combine these terms.
Answer:
x=14.5
If the answer is 14.5 move to J.
Explanation:
The sum of adjacent angles is 180
(8x-11)+(4x+17)=180
12x+6=180
12x=174
x=14.5
Well of factors is defined as something that is able to go into the other, then th answer is C. 3 is not a factor of 8. the other fit in well.
for example, 15x-10. 5 is a factor which go into both.
4x+8. 4 is the HCF (highest common factor) which can go into both..
Answer is C.
Hope this helps :)
