He needs 420 to buy a new smartphone and accessories.
75-495= 420
420+75= 495
Answer: 503
Step-by-step explanation:
Penn: n = 2013
a₁ = x
r = rp
Teller n = 2013
a₁ = -x
r = rt
Sum of terms arithmetic sequence: S = (a₁ + aₙ)n/2
Spenn = (x + a₂₀₁₃).2013/2
Steller = (-x + a₂₀₁₃).2013/2
Spenn = Steller
(x + ap₂₀₁₃).2013/2 = (-x + at₂₀₁₃).2013/2
2x = at₂₀₁₃ - ap₂₀₁₃
General term of arithmetic sequence: aₙ = a₁ + (n-1)r
ap₂₀₁₃ = x + (2013-1)rp = x + 2012rp
at₂₀₁₃ = -x + (2013-1)rt = -x + 2012rt
2x = at₂₀₁₃ - ap₂₀₁₃
2x = -x + 2012rt - (x + 2012rp)
2x = -x + 2012rt - x - 2012rp
2x = -2x + 2012rt - 2012rp
4x = 2012rt - 2012rp
4x = 2012(rt-rp)
x = 2012(rt-rp)/4
x = 503(rt-rp)
As rt - rp cannot be 0, and we know that x is positive, the smallest number for (rt-rp) is 1, so the smallest number for x is 503.
Answer:
3 5/8
Step-by-step explanation:
2 1/2 + 1 1/8
Convert to improper fractions.
5/2 + 9/8
Make the denominators equal.
40/16 + 18/16
Add the fractions.
58/16
Simplify.
29/8 ⇒ 3 5/8
Answer:
3/50
Step-by-step explanation:
Multiply across the fraction- First start with the numerator digits (-1, 3, and -2)
-2*-1= 2 and 2*3= 6 So you should have 6 as your numerator
Now look at the denominator digits (4, 5, and 5)
Multiply across and you should get 100 as your denominator
You now have 6/100 but you are not done yet! Don't forget to simplify the fraction to get your final answer
Both 6 and 100 are divisible by 2 (6 divided by two is 3, and 100 divided by two is 50)
Thus, your final answer should be 3/50!
