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Elis [28]
3 years ago
5

Find the sum of the arithmetic series for which a_1 = 7, n = 31, and a_n = 127.

Mathematics
1 answer:
uranmaximum [27]3 years ago
8 0

Answer: 2077

There are 31 terms.

S₃₁ = 31(a₁+a₃₁)/2 = 31(7+127)/2 = 2077

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Find the area of the rhombus in m squared
Nataly [62]

Answer:

\boxed{\bold{100 \ m^2}}

Step By Step Explanation:

Area Of Rhombus: \bold{\frac{pq}{2} }

Identify 'p'

5 + 5 = 10

p = 10

Identify 'q'

10 + 10 = 20

q = 20

\bold{10 \ \cdot\ \ 20 \ = \ 200}

\bold{200 \ \div \ 2 \ = \ 100}

➤ \boxed{\bold{Mordancy}}

4 0
3 years ago
Harsh is part of a school cricket team, and this year he has scored and average of 46 runs. He has played 5 innings so far and h
Nataly [62]

Answer: 45

Step-by-step explanation:

Harsh is part of a school cricket team, and he has scored an average of 46 runs in 5 innings. His scores in 4 of them are 46,45, 39, and 55. His fifth score is calculated as follows:

Since he made 5 innings and has an average of 46, the total scores will be:

= 46 × 5

= 230

Total of his first 4 scores will be:

= 46 + 45 + 39 + 55

= 185

5th score = 230 - 185

= 45

7 0
3 years ago
Read 2 more answers
Two girls and two boys went to the festival. The total cost of their tickets was $20. Each child paid the same amount for a tick
sattari [20]

Answer: $5

Step-by-step explanation: 4 children divided by 20 equals 5

6 0
3 years ago
What is the sum of the first eight terms of the geometric series?
const2013 [10]
-4 + 20- 100 + 500 - 2500 + 12,500 - 62,500 + 312,500 = 260,416
8 0
3 years ago
A sphere has a diameter of 14.5 inches.
dlinn [17]

Answer:

≈ 660.5 in²

Step-by-step explanation:

The surface area (A) of a sphere is calculated using the formula

A = 4πr² ← r is the radius

Given diameter = 14. 5 then radius = 7.25, thus

A = 4π × 7.25² = 4π × 52.5625 ≈ 660.5 in²

4 0
3 years ago
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