Answer:
9: not congruent AB=-8 and CD=10
10: not congruent AC=-3 and BD=5
11: congruent BC=1 and AD=1
Answer: 270.9 miles.
Step-by-step explanation:
The formula we use here is :

Given : Ashton used 12.6 gallons of gasoline to drive his car on a weekend trip. he averaged 21.5 miles per gallon.
Then 
Hence, he traveled 270.9 miles.
Answer:
56
Step-by-step explanation:
7 heartbeats *8 minutes = 56
Answer: (A) H0: μ = 140 mg vs. H1: μ ≠ 140 mg
Step-by-step explanation:
Usually null hypothesis represents the claim that the values associated to the groups being tested have no statistical difference but alternative hypothesis supports the claim that there is statistical difference.
Let
be the population mean .
We are given that the mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle.
i.e. Null hypothesis :
Alternative hypothesis for two tail hypothesis has sign (≠).
i.e. Alternative hypothesis : 
∴ The hypotheses for a two-tailed test of the claimed potassium content:
H0: μ = 140 mg vs. H1: μ ≠ 140 mg
4x is the proportionality