Answer:
7
Step-by-step explanation:
4y²-106=90
4y²=90+106
4y²=196
4y²/4=196/4
y²=49
y=√49
y=7
Answer:
4√5
Step-by-step explanation:
2√5 + 3√5 - √5 = 4√5
add up 2 and 3 that's in front of √5 then subtract 1 from it
Answer:
Step-by-step explanation:
sec (-x)-sin (-x) tan (-x)=cos x
sec(x)-(-sin x)(-tan x)=cos x
1/cos x-sin x(sin x/cos x)=cos x
multiply by cos x
1-sin ²x=cos²x
or 1=sin²x+cos²x
which is true.
Answer:
387
Step-by-step explanation:
1. 16*4= 64
2. 64*6=384
3. 384+3=387
Answer:
Step-by-step explanation:
-3 is an integer
it is a rational number as it can be written in p/q form ( -3/1 )
hope this helps
plz mark it as brainliest!!!!!!!!!!!
