Let the number she mailed yesterday be x.
She mailed 8 more today. Total = x + 8
if she mailed 52 in all.
x + 8 = 52
x = 52 - 8
x = 44
So she mailed 44 cards yesterday.
Hope this helps
Answer:
The probability of selecting a red or green marble is 0.6923.
Step-by-step explanation:
Let's denote the events as follows:
<em>R</em> = a red marble is chosen
<em>G</em> = a green marble is chosen
The information provided is:
n (R) = 7
n (G) = 5
n (R ∩ G) = 3
Total number of marbles in the bag is, N = 13.
The probability of an event <em>E</em> is:
Compute the probability of selecting a red or green marble as follows:
P (R ∪ G) = P (R) + P (G) - P (R ∩ G)
Thus, the probability of selecting a red or green marble is 0.6923.
Answer:
a) pyramid / prism
b)cuboid / rectangle
Step-by-step explanation:
Answer:
When the measurement of the AC arc changes, the measurement of the ABC angle and the measurement of the ADC angle also change and are always equal to each other
Step-by-step explanation:
we know that
The inscribed angle is half that of the arc it comprises.
so
If the measure of arc AC is 104 degrees
substitute
therefore
When the measurement of the AC arc changes, the measurement of the ABC angle and the measurement of the ADC angle also change and are always equal to each other
Answer:
144
Step-by-step explanation:
12*12 =144