Answer:
-3
Step-by-step explanation:
Here is a different example.
'm' is the gradient (or slope). We measure the difference between the two x values and two y values to see how each of them changed respectively. We know m = rise/run so we can put in our slope (7) and points to find t.
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Answer:
It has exactly 4 faces that triangles.
Step-by-step explanation:
Answer:
91 days
Step-by-step explanation:
Amount loaned = $10,000.
Interest rate = 5%
Paula received $125 as interest .
Since, the interest rate is 5% , One has to pay the 5% of total amount loaned in a year.
in a year , he has to pay 
×10,000 = $500.
But he paid $125 as interest , So,
Length of loan period = 
Year = 
th Year
= 3 months
Thus, he paid the amount in 91 days. (Since one month will surely be of 31 days)
Answer:
9%
Step-by-step explanation:
Let the required number be 100.
Now, according to the question, the number is first increased by 30 %
⇒ 100 + 30 % of 100
⇒ 100 + [(30*100)/100]
⇒ 100 + 30
⇒ 130
Then, it is decreased by 30 %
⇒ 130 - (30 % of 130)
⇒ 130 - [(30*130)/100]
⇒ 130 - 39
⇒ 91
Net Decrease = 100 - 91
= 9
Percent Decrease = (Change in number*100)/100
⇒ (9*100)/100
= 9 %
Answer:
(x - 5)² - 25
Step-by-step explanation:
Using the method of completing the square
add/ subtract ( half the coefficient of the x- term)² to x² - 10x
x² + 2(- 5)x + 25 - 25
= (x - 5)² - 25
