I'm pretty sure the answer is G. I'm not 100% sure tho. Hope this helps! :)
Answer: we can make 15,504 different math tests
Step-by-step explanation:
Ok, we have a bank with 20 questions (Q1, Q2........ , Q20)
and we want to make a test with 15 of those 20 questions.
As the order of the questions does not matter in the thest ( is the same if the order is Q1, Q2, ...., Q15 than if the order is Q15, Q14, ....., Q1 )
So we only want the number of combinations.
When we have N elements and we want to create groups of K elements, the total number of combinations is:
Here N = 20 and K = 15
So we can make 15,504 different math tests
True, because it's being taken away from you. You're getting rid of that amount and giving it.
Answer:
(6,-11)
Step-by-step explanation:
Given
Point B' = (4,-8)
And the translation formula (x-2, y+3)
In order to get the coordinates of the point before translation, both given points have to be put equivalent.
So, for x-coordinate
x-2 = 4
x= 4+2
x= 6
And for y-coordinate
y+3 = -8
y = -8-3
y=-11
So the old coordinates of old point were (6,-11) ..