Answer:
1: 8 2/5
Step-by-step explanation:
4x5=20+3=23
3x5=15+4=19
23+19=42
42/5= 8 2/5
Answer:
The solution is possible
Step-by-step explanation:
Given

Required
Is an output of 200, possible?
To know if it is possible or not, we start by substituting 200 for f(x)

Divide both sides by 5




Take logarithm of both sides

Apply law of logarithm

Divide both sides by log2



for f(x) = 200, x is approximately 5.32
Hence, the solution is possible
We have an equation: 250/?= 50/100
Cross multiply:
50*?= 250*100
⇒ ?= 250*100/50= 500
The number is 500~
We have another equation: ?/500= 80/100
Cross multiply:
100*?= 80*500
⇒?= 80*500/100= 400
80% of 500 is 400~
13 - 5x = -17
-5x = -17 - 13
-5x = -30
x = -30/-5
x = 6
To solve this problem, we need to simplify.
4x = 3/7
x = 3/7 ÷ 4
x = 12/7
x = 1 5/
Hope this helps!