Answer:
108
Step-by-step explanation:
Givens
- let the oldest one = 5x
- Let the youngest one = 3x
- Let the middle one = 4x
Equation
Solution
- 3x + 18 = 5x Subtract 3x from both sides
- 3x - 3x + 18 = 5x - 3x Combine
- 18 = 2x Divide by 2
- 18/2 = 2x/2 Divide
- x = 9
Answer
- 3x = 3*9 = 27
- 5x = 5*9 = 45
- 4x = 4*9 = 36
- The sum is 108
Comment
This is a very tricky problem. It is not the usual way that 3 part ratios are handled. Thanks for posting.
Can you please clarify what you want to ask? Thanks!
The scale factor is 1/3
The correct answer is 1/3
:))
Answer:
Multiply each side by −5, add 25 to each side
Step-by-step explanation:
-1/5(x-25) = 7
Multiply each side by -5/1 to clear the fraction
-5/1* -1/5(x-25) = 7*-5/1
x-25 = -35
Then add 25 to each side
x-25+25 = -35+25
x = -10
Answer:
116
Step-by-step explanation:
Area of Circle is
.
There are two circles in this question. 1 is the large circle with radius 6.5cm and the smaller circle with radius of 2.3cm.
Area of shaded area = Area of large circle - area of small circle
∴
Area of shaded =![\pi 6.5^{2} - \pi 2.3^{2}](https://tex.z-dn.net/?f=%5Cpi%206.5%5E%7B2%7D%20-%20%5Cpi%202.3%5E%7B2%7D)
Area of shaded ![=116.113](https://tex.z-dn.net/?f=%3D116.113)
(3 significant figures)