If the markers are 4.5 inches away on the map, and 2.5 inches represents 10 miles, then we need to make ratios we can work with.
Inches / Miles:
4.5 / x
2.5 / 10
Now, we can cross multiply to end up with:
2.5 * x = 4.5 * 10
Simplify:
2.5x = 45
Divide 2.5 on each side:
2.5x / 2.5 = 45 / 2.5
Simplify:
x = 45 / 2.5
x = 18
Awesome! Now we have a real ratio on the real distance of the markers.
<span>2.5 : 10 & 4.5 : </span><span>18.
</span>
18 miles is the actual distance between the two markers.
Hope I could help! If my math is wrong, or it isn't the answer you are looking for, please let me know!
<span>Have a good one!</span>
The cost of company 1: 10x+50
The cost of company 2: 8x+60
The cost will be the same at:
The answer is 5 hours
Answer:
15
Step-by-step explanation:
The hypotenuse of a triangle is a² + b² = c².
12² + 9² = c²
144 + 81 = 225
√225 = 15
Answer:
Use the normal distribution if the population standard deviation is known.
Use the student's t distribution when the population standard deviation is unknown.
Explanation:
A mound-shaped distribution refers to the normal distribution.
A good sample size for testing against the normal distribution should be
n >= 30.
The condition for the sample size is satisfied.
However, we are not given the population standard deviation, therefore it is assumed to be unknown.
Therefore the student's t distribution should be used.
Question # 17 Solution
Answer:
Step-by-step Explanation:
The given expression
And we have to solve for x₁
So,
Lets solve for x₁.
Multiply both sides by x₂ - x₁
Divide both sides by -m
Therefore,
Question # 23 Solution
Answer:
Step-by-step Explanation:
The given expression
And we have to solve for n
So,
Let's solve for n.
Multiply both sides by b.
Factor out n.
Divide both sides by -b + x.
Therefore,
<em>Keywords: solution, equation</em>
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