Answer:
area es 48 cm
el perimetro es 144cm
Step-by-step explanation:
Answer:
the yellow one
Step-by-step explanation:
Answer:
The t value for 99% CI for 21 df is 2.831.
The critical value that should be used in constructing the confidence interval is (64.593, 86.407).
Step-by-step explanation:
Now the sample size is less than 30 and also population standard deviation is not known.
Then we will use t distribution to find CI
t value for 99% CI for 21 df is TINV(0.01,21)=2.831
The margin of error is 
Hence CI is
Answer:
$420
.8 x = 336
x = 336/.8
X=$420
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
12*5=60
12 inches in a foot, you have 5 feet so 12*5=60