Answer: 4 brothers and 3 sisters for a total of 7 siblings
Step-by-step explanation:
Let No. of boys = x
Let No. of girls = y
<u>Each boy has as many brothers as sisters</u>
Hence, (x - 1) = y
Rearranging we get,
x - y = 1 ……….(1)
<u>Now, each girl has twice as many brothers as that of sisters</u>
Hence, 2 * (y - 1) = x
Solving the bracket we get, 2y - 2 = x
Rearranging we get,
-x + 2y = 2 ……….(2)
Adding (1) and (2) using the elimination method, we get
x - y = 1
-x + 2y = 2
<u>y = 3</u>
Substituting value of Y in equation (1),
x - 3 = 1
Solving this we get,
x = 4
Thus, No. of Boys = 4, No. of Girls = 3 and No. of Siblings in the family = 7
12x - 5y = 2
12x - 12x - 5y = -12x + 2
-5y = -12x + 2
-5 -5
y = 2.4x - 0.4
y - 3 = 2.4(x - 3)
y - 3 = 2.4(x) - 2.4(3)
y - 3 = 2.4x - 7.2
+ 3 + 3
y = 2.4x - 4.2
The answer is 10. Hope I helped
Answer:
25/100
Step-by-step explanation:
3/12 can be simplified to 1/4
Answer:
Sasha can look at the graph and check to see that when she plots the points on the graph, they end up as a straight line. She can also draw a table to test the values and see if when you divide y/x you get the same answer for all of them.
Step-by-step explanation:
