Answer:
30
Step-by-step explanation:
Given the equation;
n/10 + 7 = 10
We are to find the value of n
Subtract 7 from both sides
n/10 + 7 - 7 = 10 - 7
n/10 = 3
Cross multiply
n = 10 * 3
n = 30
<em>Hence the solution to the equation is 30</em>
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Answer:
32 Questions
Step-by-step explanation:
If you do 80% times 40, it equals 32.
Solution:
we are given that
John is 3 years older than Jim. Jim is 4 years less than half of Dana’s age.
Let the age of Jim be x years then we can say
Age of John
If diana Age is D then

It can be re-wriiten as
Diana age 
Given that their ages add up to 167

Hence jim is 39 nyears old, John is 39+3=42 years old. and Diana is 2*39+8=78+8=86 years old.
Answer:
y = -2x -7
Step-by-step explanation:
Parallel lines have the same slope
y = -2x has a slope of -2
The parallel line will have a slope of -2
It goes through a point of (0,-7). This would be the y intercept
y = mx+b
y = -2x -7
X=20
Step-by-step explanation:
39.90-50= 10.1
10.1÷0.05=202
X=202 texts
Check work 0.05×202=10.1 + 39.90=50