All categories

4 years ago

Please help me for the brainliest answer

Mathematics

1 answer:

Zinaida [17]4 years ago

3 0

Answer:

$5n^2$

Step-by-step explanation:

This is a quadratic sequence.

The nth term must have $n^2$ .

The sequence has a factor of $5$ .

$5n^2$

$5(1)^2=5\\5(2)^2=20\\5(3)^2=45\\5(4)^2=80\\5(5)^2=125$

Few terms to this sequence are:

5, 20, 45, 80, 125, 180, 245, 320, 405, 500, 605, 720, 845, 980, 1125, 1280, 1445, 1620, 1805, 2000, 2205, 2420, 2645, 2880, 3125, 3380, 3645, 3920, 4205, 4500, 4805, 5120, 5445, 5780, ...

You might be interested in

Marco wants to buy a new smartphone that costs $495. He has already saved $75. Write and solve an inequality to find the least a

Mamont248 [21]

Answer:

495-75=420 so

(−10,7)∪(7,11)(−1,2)∪(−4,0)[−1,9)∪(2,10]

Step-by-step explanation:

420 is that Marco still needs to save before he can buy the smartphone.

4 0

3 years ago

Read 2 more answers

Mrs. Fisher worked her 40 regular hours last week, plus 4 overtime hours at the double-time rate. Her gross pay was $576. What w

marysya [2.9K]

Answer: $12.

Step-by-step explanation:

4 overtime hours at the double-time rate =

4*2=8 regular hours.

Hence,

Mrs. Fisher worked her 40+8 regular hours last week.

Mrs. Fisher worked her 48 regular hours last week.

Her gross pay was $576.

So,

$576:48=

$12.

4 0

2 years ago

Why did I get this question wrong?

Vlad1618 [11]

You set up was almost accurate. Remember the arc length formula:

If f'(y) is continuous on the interval [a,b], then the length of the curve x = f(y), a ≤ y ≤ b should be;

L = ∫ᵇ ₐ √1 + [f'(y)]^2 * dy

We have to find the length of the curve given x = √y - 2y, and 1 ≤ y ≤ 4. You can tell your limits would be 1 to 4, and you are right on that part. But f'(y) would be rather...

f'(y) = 1/(2√y) - 2

So the integral would be:

∫⁴₁ √1 + (1/(2√y) - 2)² dy

Using a calculator we would receive the solution 5.832. Their is a definite curve, as represented below;