Answer:
a₈ = 11
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 25 and d = - 2, then
a₈ = 25 + (7 × - 2)
= 25 - 14
= 11
Answer: the original temperature is
123 °Fahrenheit
Step-by-step explanation:
The temperature dropped 11 Fahrenheit per hour from the original temperature. This means that the rate at which it is dropping is in arithmetic progression.
The formula for determining the nth term of an arithmetic sequence is expressed as
Tn = a + d(n - 1)
Where
a represents the first term(original temperature) of the sequence.
d represents the common difference.
n represents the number of terms(hours) in the sequence.
From the information given,
d = - 11 degrees (it is decreasing)
When n = 4 hours, T4 = 90
We want to determine the value of the first term, a. Therefore,
T4 = 90 = a - 11(4 - 1)
90 = a - 11 × 3
90 = a - 33
a = 90 + 33
a = 123 °Fahrenheit
Joshua used the Commutative Property.
You can change the order of the numbers you are adding because they will equal the same answer.
36+29+14=<span>36+14+29</span>
Answer:
65
Step-by-step explanation:
yessss
Answer:
10
Step-by-step explanation:
| | means absolute value. Absolute value is always positive, so your equation would be evaluated to 9 + 1 = 10
