Answer:
Brother is 70.5 and sister is 64.5
Step-by-step explanation:
you will need to set up a simple equation and give out variables.
Girls age = 6-x
Brother's age= x
the you will take those 2 and add them and place them equal to 135:
6-x+x=135
6-2x+6=135+6
The 6 cancels out
2x=141
2x/2=141/2
x=70.5
The brother's age would be 70.5 then and the girl's would be 64.5
Answer is “D” I took the test my self
Answer:
163/20 or 8.15
Step-by-step explanation:
well we are going to do PEMDAS
parentheses
exponents
multiplication/ division
addition/ subtraction
2 + 2/5 x 23/4 (i made the fractions into decimals)
2 + 6.15
163/20 or 8.15
Answer:
hypotenuse = aprox 18.6
Step-by-step explanation:
a^2 + b^2 = c^2
11^2 + 15^2 = c^2
346 = c^2
square root both sides
c = aprox 18.6
hope that helped!
The answer should be 31
(10(3)+8)-(1(3)+4)
(30+8)-(3+4)
= 31
