Five times a number is the same as 30 more than 8 times the number
5n = 8n+30
Choice C
<span>Find the volume of a cone if the slant height is 50 in and the diameter is 80 in
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V≈52359.88<span>
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Step-by-step explanation:
Let x miles/hr be the speed of the plane in still air and y miles/hr be the speed of the wind.
We have 10hr * (x + y)miles/hr = 880 miles
and 20 hr * (x - y)miles/hr = 880 miles.
=> (x + y) = 88 and (x - y) = 44.
Therefore 2x = 88 + 44 = 132 and x = 66.
The speed of the plane in still air is 66 miles per hour.
Based on the numbers that the decimal contains, and the positioning of the numbers, the number can be found to be 0.54123.
<h3>What number is it?</h3>
The 0 is in the tens place which means that it is the only number to the left of the decimal point.
The fifth digit to the right of the decimal sign is smaller than the first which means that it cannot be 5.
The number in the thousandth(3rd place) is the smallest number which makes it 1.
The number in the ten thousandths(4th) place is half the value of the number in the hundredths place(2nd) which means that the hundredths number can only be 4 and the ten thousandth number is 2.
The decimal is therefore:
= 0.54123
Find out more on solving for numbers at brainly.com/question/19389558.
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