Answer:
(9,1,-3)
Step-by-step explanation:
y= -2x +5; domain = {-2, 2,4}
-2(-2)=4+5=9
-2(2)=-4+5=1
-2(4)=-8+5+-3
Step-by-step explanation:
2wks = 24 days
If he spent 60days going 127.8 miles
He will spend 14 days going X miles
60/14 =127.8/X cross multiply
60X= 14×127.8
X=( 14×127.8)÷60
X= 29.82 miles
Answer:
65 dollars
Step-by-step explanation:
Plug in the 3 as the x in the equation and solve.
f(x)=5(3)+50
f(x)=15+50
f(x)=65
And that's how you get the answer
The amount of wrapping paper he use is 62.4 square inches
<h3>How to calculate the surface area of a prism</h3>
The formula for calculating the total surface area is expressed as:
Area = 4(area of triangle)
Find the area of the triangle
A = 0.5(6)(5.2)
A =3(5.2)
A = 15.6 square inches
TSA = 4(15.6)
TSA = 62.4 square inches
Hence the amount of wrapping paper he uses is 62.4 square inches
Learn more on total surface area here: brainly.com/question/1297098
Answer:
Step-by-step explanation:
Let X be the average of tennis balls.
mu = 55.4 inches
Hypotheses:
H_0: x bar = 55.4\\
H_a: x bar \neq 55.4
(Two tailed test at 10% significance level)
n = 25: x bar = 56.6 and s = 0.25
STd error =s/sqrt 25 = 0.05
Mean diff = 56.6-55.4 = 1.2"
t statistic = 1.2/0.05 = 24
df= 24
t critical value = ±1.318
Since t statistic lies outside this we reject null hypothesis
The company does not manufacture acceptable tennis balls and this is evidence at 90% confidence interval