Answer:
Step-by-step explanation:
there are two ways to solve systems of equations, elimination or substitution, this looks like elimination would work quickly
x= 25 -y
x + y = 25 (eq 1)
5x + y = 10 (eq 2)
subtract 2 from 1
x + y = 25
-(5x + y = 10)
-4x + 0y = 15
-4x = 15
x = - 15/4
now plug in x into either starting equations and solve for y
-15/4 + y = 25
y = 25 + 15/4
y = 100/4 + 15 /4
y = 115 /4
y = 28 3/4
we have solved it :)
Answer:
see explanation
Step-by-step explanation:
Mabel has (x + 6) pears , then Nelson has
(x + 6) = x + 2
Answer:
See how we can multiply or divide two functions to create a new function. Just like we can multiply and divide numbers, we can multiply and divide functions. For example, if we had functions f and g, we could create two new functions: f ⋅ g f\cdot g f⋅g and gfstart fraction, f, divided by, g, end fraction .
Step-by-step explanation:
Answer:
45 !!
Step-by-step explanation:
Anne = 5x
Dawn= 3x
Amount = 120
5x + 3x = 120
8x = 120
x= 120/8 = 15
Anne = 5x = 15 x 5 = 75
Dawn= 3x = 15 x 3 = 45
I hope im right!!
Answer:
11 hours
Step-by-step explanation:
let he works at first store x hours and at car wash y hours. Then
x+y=25
multiply by 4
4x+4y=100 ...(1)
12x+15y=333
divide by 3
4x+5y=111 ... (2)
(2)-(1) gives
y=111-100=11
