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Solve x^2 + 5x -14 = 0

x1 = 2x2 = -7

Answered by Hannah W. Maths tutor
2171 Views

Write √80 in the form c√5, where c is a positive integer.

Firstly, we recall that √ab=√a x √b. Noticing that 80=16 x 5 then, we have that √80=√16 x √5. Since √16 = 4 then, we have that √80=4 x √5. So, giving the final answer in the form that the question asks: c...

Answered by Tutor524731 D. Maths tutor
6045 Views

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 15p...

Answered by Annabel T. Maths tutor
4084 Views

A race across America is 3096.25 miles. Juan knows from a previous race that his average speed is 15.12 miles per hour. If he cycles for 8 hours per day, how many days will it take him to finish the race?

Firstly we should get the answer distance Juan can cover per day. We know Distance = Speed * Time so the distance per day = 15.12 miles per hour * 8 hours = 120.96 miles per day.Once we know this...

Answered by Alister H. Maths tutor
3507 Views

calculate the volume and surface area of a beach ball with a 30cm diameter.

surface area 1.13m^2volume 0.11 m^3

Answered by Olivia M. Maths tutor
1496 Views

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