396
/x−10
=−22
Step 1: Multiply both sides by x-10.
396=−22x+220
−22x+220=396(Flip the equation)
−22x+220−220=396−220(Subtract 220 from both sides)
−22x=176
−22x
/−22
=
176
/−22
(Divide both sides by -22)
x=−8
Answer:
4x² + 18
Step-by-step explanation:
note that (c ○ d )(x) = c(d(x))
To evaluate substitute x = d(x) into c(x), that is
c(d(x))
= c(x² + 5)
= 4(x² + 5) - 2
= 4x² + 20 - 2
= 4x² + 18
The answer is A) 45°. This is because angles 1 and 5 are vertical angles. Vertical angles are congruent.
Answer:
Step-by-step explanation:
24 + 3r >= 100 is the equation
The given values are:
p = 22% = 0.22
Zc = 1.645 at 90% confidence level.
margin of error, E = 0.04
The formula we can use here is:
E = sqrt(pq/n) * Zc
0.04 = sqrt(0.22*(1-0.22)/n)*1.645
n = (0.22*(1-0.22))*(1.645/0.04)^2
n = 290.22
hence minimum sample size = 290