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A quadrilateral shape has angles of 60, 75, and 105 degrees. How many degrees is the fourth angle?

All interior angles in a quadrilateral add up to 360 degrees. Adding up what we know so far 60 + 75 + 105 = 240. So the fourth angle must be 360 - 240 which equals 120 degrees.
PB
Answered by Priti B. • Maths tutor
7582 Views

Simplify \sqrt{98} - \sqrt{32} giving your answer in the form k*sqrt{2} where k is an integer

Let's begin with the basics, before we begin we should be able to answer what is a surd? and What rules do we need?\begin{equation}...\end{equation}Answer: 3*sqrt{2}
CV
Answered by Corey V. • Maths tutor
3323 Views

A triangle has the following dimensions: 5 km, 12 km and 13 m. Is it a right triangle?

Step one : convert all dimensions to the same units 1km = 1000m therefore 5km = 5000m12km = 12,000m Step two : recall that Pythagoras theorem is used for right angle triangles, defined by the following: a 2 ...
TS
Answered by Tayeba S. • Maths tutor
4612 Views

Calculate 3/4+3/4*5/7 ?

so we need to know the understanding of BODMAS, hoe to add fractions, how to multiply fractions, how to simplify fractions.Answer:9/7
AK
Answered by Anand K. • Maths tutor
2792 Views

Why do you put the quadratic equation equal to zero when you want to find it’s roots?

It is better to think of it as substituting one equation into another, rather than thinking of it as ‘making it equal to zero’. Say you have a quadratic equation y = x^2 - x - 6 and you want to find it’s roo...
NG
Answered by Nadiyah G. • Maths tutor
3190 Views