76 x 78= 5928 how this helps
A plane leaves the airport at 9:15pm and travels at speed 560km/h then at midnight plane will be at 1540 km far away.
As given,
Plane leaves the airport at 9:15 pm
Plane travels at speed of 560 km /h
Total time = 2hour+ 45minutes
= 2hour+ (45/60)hour
= (11 /4) hour
We have
1 hour = 560 km
⇒ (11 /4)hour = (560 ×11)/4 km
= 1540 km
Therefore, a plane leaves the airport at 9:15pm and travels at speed 560km/h then at midnight plane will be at 1540 km far away.
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Since, the fundraiser only have three prices for books($2, $5 and $10), the number of $5 book that was sold is 12.
<h3>How to form equation and solve ?</h3>
The fundraiser only have 3 prices for books which are $2, $5 and $10.
There were 6 more $5 books sold than $10 books sold.
Let
x = number of $10 book sold
Therefore,
number of $5 books sold = x + 6
There are 8 more $2 book sold than $10 book sold. Therefore,
number of $2 books sold = x + 8
A total of $250 was raised.
Therefore, the total amount sold forms the following equation:
10x + 5(x + 6) + 2(x + 8) = 250
10x + 5x + 30 + 2x + 16 = 250
17x = 250 - 30 - 16
17x = 204
x = 204 / 17
x = 12
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The formula for volume is base×height×width
Answer:
substitude (2x+4) for y in the second equation
