No it's not equal first equations answer is 7 second equations answer is 12
Answer:
Step-by-step explanation:
Pythagorean theorem
Answer:
if i was u i would either put g or h because there's no 48 in the word problem
Step-by-step explanation:
Answer:
The 95% confidence interval is
Step-by-step explanation:
From the question we are told that
The population standard deviation is
The sample size is n = 20
The sample mean is
From the question we are told the confidence level is 95% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
=>
=>
Generally 95% confidence interval is mathematically represented as
=>
=>
Answer:
Angle A = 50
Step-by-step explanation:
We know the 3 angles of a triangle add to 180
A + B+C = 180
2x-10 + 70 + x+30 = 180
Combine like terms
3x+90 = 180
Subtract 90 from each side
3x+90-90=180-90
3x = 90
Divide by 3
3x/3 = 90/3
x = 30
We want to find angle A
Angle A = 2x-10
= 2(30) -10
= 60-10
= 50