5x-3y=16
3x-5y=-4
Multiply the first equation by 3; the second one by 5
15x-9y=48
15x-25y=-20
Eq 1 - Eq 2:
-9y+25y=48+20=68
16y=68
4y=17
y=17/4
5x-3y=16
5x-3×17/4=16
5x=16+51/4=(64+51)/4=115/4
x=115/4/5=23/4
x=23/4
Answer: xy/2 cm²
Step-by-step explanation:
An isosceles triangle is a triangle that has two sides out of the three sides to be equal. The area of an isosceles triangle is given as:
= 1/2 × base × height
where,
base = xcm
height = ycm
Therefore,
Area = 1/2 × x × y
Area = xy/2 cm²
The answer is 5 because 5 times 13 is 65
The answer is
A. Linda has $1,500 in a bank account that pays 3% annual interest.
Answer:
y = 13x
Step-by-step explanation:
First we need to take the number miles the Johnson family drove and divide it to the number of gallons of gasoline used to find how many miles per gallon
Miles per gallon = 52/4
Miles per gallon = 13
Now that we know how many miles per gallon, let's make an equation to find how much they can travel on a full tank of 15 gallons.
Let y = number of miles traveled
Let x = number of gallons
y = 13x
Now let's see how much they can travel in 15 gallons.
y = 13x
y = 13(15)
y = 195 miles
So the Johnson family can drive 195 miles on a full tank of 15 gallons of gasoline.