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A and B are two points. Point A has coordinates (–2, 4). Point B has coordinates (8, 9). C is the midpoint of the line segment AB. Find the coordinates of C

Think about the x-coordinate and the y-coordinate separately. Starting with the x-coordinate: Find the difference between the two x-coordinates -2 and 8, which is 10. to find the mid-point, we need to half t...
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Answered by Gwen F. • Maths tutor
21792 Views

What is red shift?

You see colours due to the length of a wave of light. When a distant galaxy is moving away from us the wavelength increases due to the Doppler Effect (which you may have studied using the sound of a passing ...
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Answered by Carys L. • Maths tutor
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Solve the two simultaneous equations: 2x - 5y = 11 and 3x + 2y = 7

Step One: Write the first equation and then write the second equation underneath. Label the first equation A and the second equation B. You can now see clearly that each equation contains an x component and ...
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Answered by Priya L. • Maths tutor
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A bag has 24 sweet of different colours: 10 red, 8 blue and 6 yellow. What is the probabilty of not getting a blue sweet ?

First the thing you need to know before answering the question is, the probably of not getting something is [ 1 - the probabilty of getting something ], so the probabilty of getting a blue sweet is , the num...
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Answered by Faizul H. • Maths tutor
3221 Views

Bob and Bill have 50 sweets to share in the ratio 4:6 respectively. how many do they each get?

so first you add the two ratio, so 4+6 = 10. So now we know that we have 10 parts that we can give out. One part is equal to 50/10 = 5, one part has 5 sweets. so bob gets 4 parts, 4 x 5 = 20 and bill gets 6 ...
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Answered by Faizul H. • Maths tutor
6519 Views