If sin0 = 3/4 and is in the first quadrant, then cos0 = a. 4/5
b. (sqrt 7)/4
c. 1/4
d. (sqrt 21)/3

Step-by-step explanation:

we are given that

we want to figure out Cos

in order to do so we can consider Pythagoras trig indentity given by

given that,sin=¾

thus substitute,

simplify square:

simplify substraction:

square root both sides:

By square root property:

simplify root:

hence, our answer is b

so

p=3

h=4

b=

b=

Now

cosθ=

So

b. is a required answer.

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.