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Solve (1/2)*(4x+2)+3=8

First of all, we operate the parenthesis obtaining 2x+1+3=8. Operating then, 2x+4=8, and leaving everything that depends on x in one side, 2x=8-4 (remember to change the sign when passing from one side of th...
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Answered by Lucia A. • Maths tutor
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The distance from the Earth to the Sun is 93 million miles. Assume it takes 365 days for the Earth to travel once around the Sun the Earth travels in a circle with the Sun at the centre. Work out the average speed of the Earth in miles per hour

1 st calculate: 93 000 000 × 2π 2 nd calculate: 365×24 Then divide the two values: 186 000 000π÷8760 = 66705 (5 s.f.)
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Answered by Simbarashe J. • Maths tutor
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There is a right-angle triangle with hypothenus H = 5 cm and side A = 3 cm. Find the length of the third side B using Pythagoras' Theorem.

Pythagoras' theroem states that on a right-angle triangle, the square of the longest side (hypothenus) is equal to the sum of the squares of the other two sides. Therefore, H 2 = A 2 + B 2 5 2 = 3 2 + B 2 25...
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Answered by Ashwin V. • Maths tutor
3654 Views

3/8 is the same as ?/24 ?

Look at the two fractions to see what multiplier has been used. In this case, the denominators are both known: 8 and 24. 8 has been multiplied by 3 to get a new denominator of 24. This means the numerator al...
RC
Answered by Rahul C. • Maths tutor
4171 Views

How do I calculate the 100th term of the sequence 15, 8, 1, -6...

A sequence means a pattern, so the first thing to do is find the pattern. First try seeing what the difference between the numbers is. 15-7=8, 8-7=1, 1-7=6, so the pattern must be to subtract 7 each time. Th...
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Answered by Katerina S. • Maths tutor
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