Answer:
A
d = 2
Step-by-step explanation:
<em><u>Formula</u></em>
l = a + (n - 1)d
<em><u>Givens</u></em>
n = 10
a = - 5
l = 13
<em><u>Solution</u></em>
13 = - 5 + (10 - 1)d Substitute
13+5 = -5+5 + 9d Add 5 to both sides
18 = 9d Divide by 9
18/9 = 9/d
Leah has 48 marbles.
Represent the number of marbles that each person has by L and D.
Leah has 28 more marbles than Dan: L = D + 28.
Then (1/3)L = (4/5)D. Here the LCD is 15, and so multiplying this equation by 15 will remove the fractions: 15(1/3)L = 15(4/5)D.
Therefore, 5L = 12D, and D = 5L/12.
Then, since L = D + 28, L = (5/12)L + 28, or
12L = 5L + 336, or
7L = 336, or
L = 336/7 = 48.
Leah has 48 marbles. That means that Dan has 20 marbles.
1. (x+2y)^2-ab x^2+4xy+4y^2-ab
2. 3n-13<9 n<22/3
3. 6+n/7=4 n/7=-2
2 11/25
I hope this helps :)
3/10 or 30%
The longest, yet easiest way to do this is to find all possible numbers that fit this scenario
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Even Numbers: 2, 4, 6, 8, 10
Greater Than 5: 5, 6, 7, 8, 9, 10
Now find common numbers in both categories
6,8, and 10
meaning the probability is 3/10 or 30%
