PLEASE HELPPPPPPP Espress 15 x^1/2 y^1/5 using a radical

Mathematics

1 answer:

Yakvenalex [24]3 years ago

3 0

Answer:

<u>The correct answer is C. 15 ¹⁵√x⁵y³</u>

Correct question and statement:

Express 15x^1/3 y^1/5 using a radical, as it is written in the graph attached.

Step-by-step explanation:

15x^1/3 y^1/5

15 * (x^1/3 y^1/5)

For multiplying two fractional exponents with different bases, we need to equal the denominator of the fractional exponents.

Therefore, we have:

1/3 * 5/5 = 5/15 ⇒ 1/5 * 3/3 = 3/15

15 * (x^5/15 y^3/15)

Now we can express the fractional exponents as an only radical, this way:

x^a/b = ᵇ√xᵃ

15 * ¹⁵√x⁵y³

<u>The correct answer is C. 15 ¹⁵√x⁵y³</u>

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The formula S = A((1+r)t+1−1r) S = A 1 + r t + 1 - 1 r models the value of a retirement account, where A = the number of dollars

tatiyna

So this is how you will arrive to the answer:

The following formula models the value of a retirement account,

S = (A [ ( 1 + r ) ^ (t + 1) - 1] / r)

wherein:

A = number of dollars added to the retirement account (each year)

r = annual interest rate

s = value of the retirement account after t years

The question is:

If the interest rate is 11% then how much will the account be worth after 15 years if $2200 is added each year?

Round to the nearest whole number.

Solution:

The said formula contains the term t + 1 instead of the usual "t". Means that the formula applies only in the situation where the money is invested at the beginning of the year instead of the usual practice at the end

Given:

A = 2200
r = 0.11
t = 15

The accumulated amount:
F = A ((1 + r) ^ (t+1) - 1 / r

Substitute:

F = 2200 (1.11 ^ (15 + 1 ) - 1) /0.11
F = 86217.88664

If money is invested at the end of the year, then F = 80476.49, the difference being the investment of an extra 2200 over 15 years.

4 0

3 years ago

Read 2 more answers

Please help me! I will mark brainliest! I don't get polynomials and all that other stuff. So this question is really hard.

frez [133]

Answer:

Using sum and product method you can simplify the top as:

x^2-4x-5 = (x-5)(x+1) and x^2-5x+4 = (x-4)(x-1)

The x-4 and the x+1 cancel each other out and you will be left with

(x-5)/(x-1)

Step-by-step explanation:

3 0