Help Needed!! Find The Measure Of Angle A In The Triangle

A=40°

Step-by-step explanation:

All angles in a triangle add up to 180°, so we take 60 away from 180 because we know that angle.

180-60=120

Next, we add up the number of x,

10x+20x=30x

Third, we need to find out what x is, so we divide 120 by 30, which gives us 4.

x=4

to find out what 10x is (A), we multiply 4 by 10

4×10=40

A=40

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb