D because 5.50 is x and your y so boom D
306 is the total cards sent by all the students in the class. Lets say x is the number of students in class, therefore each student needs to send x-1 cards (since they do not send themselves a card). So depending on your level of math, you could either take the complex way to solve it using quadratic equations, or just find the number that if multiplied by itself then subtracted, gives you 306.
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Complex way
So a = 1, b = -1, c=-306
using the quadratic equation:
Answer:
6 x (3-2) = (6 x 3 ) - ( 6 x 1)
Step-by-step explanation:
multiply them together and find out how to distribute it.
18 - 6
(6 x 3 ) - ( 6 x 1)
Answer:
HL
SAS
SSS
Step-by-step explanation:
Since these are right triangles, and you have the two hypotenuses are congruent to each other and two legs that are also congruent to each other, then HL can be applied.
For HA to work we must have been given something else about one of those angle (besides the 90 degree one).
Since you have two corresponding sides that are congruent, then the 90 degree angles in both are congruent, and then the sides right after that 90 degree angle are also congruent to each other, so SAS can be applied.
We can't use AAS. We only know something about one angle per each triangle due to the markers.
LA? Needed another angle besides the 90 degree one.
All three corresponding sides are congruent. The markers tell us this. So we can apply SSS.
Answer:
80 percent
Step-by-step explanation:
What percent of 110 is 88
p * 110 = 88
divide by 110 on each side
p = 88/110
p = .8
multiply by 100 to get percent
80 percent
