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Thepotemich [5.8K]

3 years ago

12

The following sequence has first five terms as: -20, -17, -14, -11, -8, .......... Find an expression for the nth term of the se

quence

1 answer:

Maslowich3 years ago

4 0

Answer:

a(n) = -20 + 3(n - 1)

Step-by-step explanation:

a(n) = -20 + 3(n - 1)

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How much can you accumulate in a savings plan if your annual year-end deposit is $500, and you earn 6% annual interest for 8 yea

Anit [1.1K]

Hi there
The formula of the future value of annuity ordinary is
Fv=pmt [(1+r)^(t)-1)÷r]
Fv future value?
PMT 500
R 0.06
T 8 years

Fv=500×(((1+0.06)^(8)−1)÷(0.06))
Fv=4,948.73

Option c

Hope it helps

3 0

3 years ago

A high school teacher gives three regular exams during a semester and one final exam at the end of the semester. A student’s fin

statuscvo [17]

To get an average score of 80% (out of four exams), a total of 4*80%=320% is needed, so the minimum required for the 4th test is 320-(75+97+60)=88.
To get an average score of 89% (out of four exams), a total of 4*89%=356% is needed, so the maximum required for the 4th test is 356-(75+97+60)=124, which is impossible.
So the next exam grade must range between 88 and 100 to get a grade b in the class.

Hoped I help! Mark brainly it would help<3

5 0

3 years ago

Suppose an airline accepted 12 reservations for a commuter plane with 10seats. They know that 7 reservations went to regular com

kvv77 [185]

Answer:

<h2>See the explanation.</h2>

Step-by-step explanation:

(a)

7 persons will show up for sure, hence there is not any kind of probability here.

The other 5 persons have 50% chance to show up.

The flight will be overbooked, if either 4 will come or 5 will come.

From the total 5 persons, 4 can be chosen in $^5C_4 = 5$ ways.

The probability that any four among the 5 will come is $5\times(\frac{50}{100} )^{5} = 5\times(\frac{1}{2} )^{5} = \frac{5}{32}$ .

The probability that all of the 5 passengers will come is $\frac{1}{32}$ .

Hence, the required probability is $\frac{5}{32} + \frac{1}{32} = \frac{6}{32} = \frac{3}{16}$ .

(b)

The probability that there will be exactly 10 passengers on the flight is $^5C_3\times (\frac{1}{2} )^5 = \frac{20}{2} \times\frac{1}{32} = \frac{10}{32} = \frac{5}{16}$ .

The probability that there will be no empty seats in the plane is $\frac{3}{16} + \frac{5}{16} = \frac{1}{2}$ .

Hence, probability of having empty seats is $1 - \frac{1}{2} = \frac{1}{2}$ .

6 0

3 years ago

The high temperature for one town last year was 79°F The low temperature for the same town was - 3°F What was the difference bet

Ainat [17]

Answer:

79°c - (-3°c) = 82°c

Step-by-step explanation:

this is because we need to calculate the total gap between those numbers through number line. I have attached the photo, have a look over there.

6 0

3 years ago

Which expression is equivalent to (x+4)^2

Inessa05 [86]

Answer:

(x+4)(x+4)

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers