Answer:
18 years
Step-by-step explanation:
let the boy's age my x and mother's age be y
x+y=48
y=3+2x which can also be written as 2x-y=-3
on solving both the equations,
you will get x=15 and y=33
so son's age is 15 years and mom's age is 33 years and the difference between their ages is 18
Answer:
78.9
Step-by-step explanation:
78.852 rounded to nearest tenth is 78.9
Answer: top triangle = 10 x 4 = 40cm^2 / 2 = 20cm^2
Rectangle = 10 x 6 = 60cm^2
Right hand triangle = 6 x 4 = 24cm^2 / 2 = 12cm^2
Step-by-step explanation:
For top triangle we do 10 - 6 to get shortest side
Rectangle - ignore 14 and use top 10 cm
Finally triangle on right hand - do 14cm - 10 to get base side. Base side is 4cm.
Formula for area of triangle = b x h / 2
Note: ^2 is just to the power of 2 or squared
I hope u found this answer beneficial.
Have a nice day and Christmas holidays m8 :-)
Answer:
x = -2, y = 3
Step-by-step explanation:
2x + y = -1
3x - y = -9
2x + y + 3x - y = -1-9
5x = -10
x = -2
2(-2) + y =-1
-4 + y = -1
y = 3
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