Answer:
they are congruent because SAS
Step-by-step explanation:
9514 1404 393
Answer:
50 problems
Step-by-step explanation:
The percentage wrong was 100% -72% = 28%. Then the number n of problems on the test was ...
14 = 0.28·n
n = 14/0.28 = 50
There were 50 problems on the test.
Answer:
Step-by-step explanation:
Given equation:
Expand the left side:
Let all terms on the left side have the same denominator of 7:
Join the terms on the left side:
Let all the terms on the right side have the same denominator of 3:
Join the terms on the right side:
Cross multiply:
Expand:
Add 12x to both sides:
Add 252 to both sides:
Divide both sides by 40:
Recall that to get the x-intercepts, we set the f(x) = y = 0, thus
256 because just divide it by 100 or just take off 2 0s.
(also to remember it if you are asking for how many anything like this, you might want to ask yourself 'how many 0s are there?' and after just take of as many 0s as there are in a 100!)