An=a1+d(n-1)
a13=1.9
1.9=a1+3.7(13-1)
1.9=a1+3.7(12)
1.9=a1+44.4
minus 44.4 both sides
-42.5=a1
an=-42.5+3.7(n-1)
S_24, so sum all theway up to a24
S_n=(n(a1+an))/2
a1=-42.5
a24=-42.5+3.7(24-1)=42.6
S_n=(24(-42.5+42.6))/2
S_n=(24(0.1))/2
S_n=(2.4)/2
S_n=1.2
D
Yes the correct answer is 1/2 because there two of them
Answer:
x ∈ (- 9/2; 1/2), it can also be written as -9/2 <x< 1/2
Step-by-step explanation:
We have absolute value, so we will have2 inequalities.
2x + 4 < 5 and -(2x +4)< 5
2x < 1 -2x - 4 < 5
x < 1/2 -2x < 9
or x > -9/2
(-∞; 1/2) or (- 9/2; ∞)
(-∞; 1/2) ∩ (- 9/2; ∞) = (- 9/2; 1/2)
The answer is x ∈ (- 9/2; 1/2), it can also be written as -9/2 <x< 1/2.
Answer:
there is a 1 in 14 chance of getting 14 and there is a 11 in 14 chance of getting a number less than 12.
Step-by-step explanation:
since there are 14 numbers, there is only one 14, so that means 1 in 14 chance. that can be written as 1:14 or 1/14. there are 14 #and 11 less than 14 so 11:14 or 11/14. unless you mean 12 or less, because then its 12/14. unless you leave the first number you drew out, then it would change to 11/13 or 12/13