Answer:
x-intercept = -6 y-intercept = 9
Step-by-step explanation:
Answer: 12.25 and 20.25
Step-by-step explanation:
20.25 - 12.25 = 8
Square root of 20.25 is 4.5
Square root of 12.25 is 3.5
4.5 - 3.5 = 1
Hope this helped
Answer:
The numbers are 91 and 81
Step-by-step explanation:
Let:
x be the first number.
y be the second number.
The sum of two numbers is 172.
x + y = 172
Their difference is 10.
x - y = 10
Try to arrange for solving x:
x - y = 10
x = 10 + y
Now substitute the x to the first equation.
x + y = 172
(10 + y) + y = 172
10 + y + y = 172
10 + 2y = 172
2y = 172 - 10
2y = 162
y = 162 ÷ 2
y = 81
Now solve for x:
x + y = 172
x + (81) = 172
x = 172 - 81
x = 91
Now let's check one more time:
The sum of two numbers is 172:
91 + 81 = 172
172 = 172 (correct)
Their difference is 10:
91 - 81 = 10
10 = 10 (correct)
