Answer:
28/171
Step-by-step explanation:
The probability initially of drawing a red would be 8/19 since there were 19 marbles in the bag in the beginning. However, without replacement, the probability of drawing another red would be 7/18 as there would be one less red and one less marble in the bag so to find the combined probability of getting 2 red marbles, multiply 8/19 by 7/18 to get: 56/342 = 28/171
a. yes
b. yes
c. not congruent, but similar
d. ΔCDE
e. to find b we need to know DE or AC
Answer:
12 people
Step-by-step explanation:
i know u are using mathswatch i feel your pain but however hard you try you will almost never get the right show your working out
Esaey
obviously a diference of 2 perfect suqres
(a-b)(a+b)=a²-b²
so
(j+7)(j-7)=j²-7² or j²-49