Two times the sum of a number and nine.
(2,3) so x=2, y=3 and h=(2^2+3^2)^(1/2)=√13
sina=3/√13, cosa=2/√13, tana=3/2
Afterwards multiply sina and cosa by √13/√13 and get sina=(3√13)/13 and cosa=(2√13)/13
Answer:
13.) 0.19625 15.) 37.68
Step-by-step explanation:
Formula for area of a circle: A=πr²
13.) 3.14 x .25² = 0.19625
Formula for circumference for a circle: C=πD or C=2πr
15.) (6 x 2) x 3.14 = 37.68
Hope this helped : )
He is false the equation should be as follows
Answer:
3
Step-by-step explanation:
the opposite of -3 is 3 because they are on opposite sides of the number line. hope this helps! <3
