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A right-angle triangle has three sides (diagram would be included). Side A = 3cm; Side B = 7cm. What is the length of Side C (the hypotenuse)? Give your answer to 2 d.p.

Using Pythagoras' Theorem --> a 2 + b 2 = c 2 (or c = SqRT(a 2 + b 2 )) where c is the hypotenuse.Substitute a = 3; b = 7. So: 3 2 + 7 2 = c 2 9 + 49 = 58. SqRt(58) = 7.62. Side C = 7.62 cm
AS
Answered by Ashley S. • Maths tutor
3664 Views

A plane travels at a speed of 213 miles per hour. Work out an estimate for the number of seconds the plane takes to travel 1 mile.

Since the plane travels 213 miles per hour, it must travel on average 1 mile every 1/213rd of an hour.We know that there are 60 minutes in 1 hour, and 60 seconds in a minute, so there are 60 x 60 = 3600 seco...
TL
Answered by Tom L. • Maths tutor
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Solve x^2 + 5x -14 = 0

x 1 = 2x 2 = -7
HW
Answered by Hannah W. • Maths tutor
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factorise fully: 10pq +15pqr

First thing you have to do is look at the number 10 and number 15. which number goes into 10 and 15 , its 5. 5 goes outside the first bracket. = 5( )next you have to find the like terms, both 10pq and 15pqr ...
AT
Answered by Annabel T. • Maths tutor
5391 Views

find the integral of 1/x

ln(x)+c
GA
Answered by George A. • Maths tutor
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