Answer:
2x+6=20
Step-by-step explanation:
Hey DatGamer13!
Question:
Solve for x
Solution:
Subtract 10 from both sides.
3x^2 + 13x − 10 = 10 − 10
3x^2 + 13x − 10 = 0
Factor left side of equation.
(3x − 2) (x + 5) = 0
Set factors equal to 0.
3x − 2 = 0 or x + 5 = 0
Answer:
x = 2/3 or x = −5
Answer:
Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .
Step-by-step explanation:
The sample proportion is p2= 7/27= 0.259
and q2= 0.74
The sample size = n= 27
The population proportion = p1= 0.4
q1= 0.6
We formulate the null and alternate hypotheses that the new program is effective
H0: p2> p1 vs Ha: p2 ≤ p1
The test statistic is
z= p2- p1/√ p1q1/n
z= 0.259-0.4/ √0.4*0.6/27
z= -0.141/0.09428
z= -1.496
The significance level ∝ is 0.05
The critical region for one tailed test is z ≤ ± 1.645
Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .
Answer: x + 100
Step-by-step explanation:
From the question, we are told that Bobbie has 100 more followers than Debora and x is used to represent the number of followers that Debora has.
The expression that shows the number of followers Bobbie has will be the number of followers that Debora has plus 100. This will be :
= x + 100
Option 2 => 6.4^2
Because area of a square = side *side or side^2
Hope this helps u..!!!
