Corbin has pens. There are three types of pens: red, black, and blue. If the probability of getting a red pen is 4/10 and the probability of getting black is 5/10, what is the probability of getting blue?

( I really need this answered or else I might not pass this year pls help! simplify if u can. Hint: It'll be a fraction, I know this because I have to match the fraction to the problem. For whoever helps me I'm forever grateful and thanks so much!)

blue=1/10

Step-by-step explanation:

so there are 3 types of pens

Red = 4/10

black= 5/10

blue=?

so u add up the other 2 fractions - 4/10+5/10 to get 9/10

then u see how many Corbin would have left: 1/10

1/10= that the amount of blue pens he has.

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.