geno3141

There are 180° in the sum of the angles of one side of a straight line.

The center angle is a right angle (the little box in its corner indicates a right angle), so it contains 90°.

This means that there are 90° left for the two angles of 3x + 10° and x + 20°.

An appropriate equation is:  (3x + 10°) + (x + 20°) = 90°.

Can you finish this?

How many apples are on the apple trees? 

How much fruit are in their refrigerators?

5 · 3³ + 7  = 5 x 3 x 3 x 3 + 7  =

323603605 x .33                  Now, it's calculator time!

Please edit the question --- "she would have arrived in equation of the time"???

If you use the trig identity:  sin(A + B) = sin(A)cos(B) + cos(A)sin(B):

Substituting  A with x  and  B with 30:

--->   2[ sin(x + 30) ]  =  2[ sin(x)cos(30) + cos(x)sin(30) ]

Since    sin(30) = 1/2   and   cos(30) = √(3)/2

--->   2[ sin(x)·√(3)/2 + cos(x)·(1/2) ]

Using the distributive property with 2:

--->   √(3)sin(x) + cos(x)

To calculate a percentage, divide the part by the whole and multiply that answer by 100.

25/34 x 100  =  73.529%  (approximately)

When multiplying fractions, multiply the numerator times the numerator and the denominator times the denominator.

(2/15) x (-5/8)  =  (2 x -5)/(15 x 8)  =  -10/120  =  -1/12

The square root of -1 does not convert into a regular whole number, common fraction or decimal fraction.

It is given a name, i, but that doesn't give you another value for it.