2x-4y=14
X=2y-2
2x-4y=14
x-2y=-2
x-2y=12
x-y=-6
Answer:
$76.80
Step-by-step explanation:
When a product has a certain markup, you need to multiply the markup by the price of the product, and then add that to the original price of the product. 20%=0.2, and 0.2*64=12.8. Adding this to the original price, you get 64+12.8=$76.80. Hope this helps!
Answer: true
Step-by-step explanation:
Z-tests are statistical calculations that can be used to compare the population mean to a sample mean The z-score is used to tellsbhow far in standard deviations a data point is from the mean of the data set. z-test compares a sample to a defined population and is typically used for dealing with problems relating to large samples (n > 30). Z-tests can also be used to test a hypothesis. Z-test is most useful when the standard deviation is known.
Like z-tests, t-tests are used to test a hypothesis, but a t-test asks whether a difference between the means of two groups is not likely to have occurred because of random chance. Usually, t-tests are used when dealing with problems with a small sample size (n < 30).
Both tests (z-tests and t-tests) are used in data with normal distribution (a sample data or population data that is evenly distributed around the mean).
Answer:
C. a higher monthly payment.
Step-by-step explanation:
<h3>Answer options:</h3>
Rate adjustment resulted in
<u>A. a lower interest rate.
</u>
- No, interest rate increased from 0.4 to 0.5 percent
<u>B. a higher principal.
</u>
- No, principal decreased from $200000 to $187000
<u>C. a higher monthly payment.
</u>
- Yes, monthly payment increased from $1059.85 to $1162.56
<u>D. a higher number of payments.</u>
- No, number of payments remained as 336
Answer:
89 sq meters
Step-by-step explanation:
The whole rectangle 13x8 = 104
Now subtract the white triangle
(6x5)/2 = 15
104-15 = 89
