Answer:
x=8
Step-by-step explanation:
set both equations equal to each other
x^2-3x-10=-2x=2
combine like terms
x^2=1x+8
x+8
Hope this helps!
Answer:
28 inches
Step-by-step explanation:
The three pieces are in the ratio
5:7:9
Multiply each piece by x
5x : 7x: 9x
Add the pieces together
5x+7x+9x = 147
Combine like terms
21x = 147
Divide each side by 21
21x/21 =147/21
x =7
The smallest piece is 5x = 5*7 =35
The largest piece is 9x = 9*7 =63
The difference is 63-35=28
Answer: The cost of one granola bar is $0.60 and the cost of one apple is $0.35
Step-by-step explanation: Cost of one granola bar = x
Cost of one apple = y According to the given statement;
4x+y=2.75 Eqn 1
2x+3y=2.25 Eqn 2
Multiplying Eqn 2 by 2
Subtracting Eqn 1 from Eqn 3
Dividing both sides by 5
Putting y=0.35 in Eqn 2
Dividing both sides by 4
The cost of one granola bar is $0.60 and the cost of one apple is $0.35
Keywords: linear equation, elimination method step-by-step explanation: