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inessss [21]
3 years ago
12

What’s the answer to this?

Mathematics
2 answers:
AlekseyPX3 years ago
6 0
The answer is 6/(5x^10)
Vlad1618 [11]3 years ago
6 0
Root ((72x ^ 16) / (50x ^ 36))
 The first thing we must do in this case is to rewrite the expression:
 Root ((36x ^ 16) / (25x ^ 36))
 (6/5) * Root ((x ^ 16) / (x ^ 36))
 Then, for power properties we have:
 (6/5) * Root ((x ^ (16-36))
 (6/5) * Root ((x ^ (- 20))
 (6/5) * Root (1 / (x ^ 20))
 We rewrite the expression again:
 (6/5) * ((1) ^ (1/2) / (x ^ 20) ^ (1/2))
 (6/5) * (1 / (x ^ 10))
 (6 / (5 * x ^ 10))
 Answer: 
 (6 / (5 * x ^ 10))
 option A
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Giving 30 points pls answer correctly
Mademuasel [1]

Answer:

B. 20.41

Step-by-step explanation:

I hope this helps! pls brainliest:D

5 0
2 years ago
To make concrete, the ratio of cement to sand is 1 : 3. If cement and sand are sold in bags of equal mass, how many bags of ceme
kotykmax [81]

Answer:

5 bags of cement are required.

Step-by-step explanation:

Since to make concrete, the ratio of cement to sand is 1: 3, if cement and sand are sold in bags of equal mass, to determine how many bags of cement are required to make concrete using 15 bags of sand the following calculation must be done:

Cement = 1

Sand = 3

3 = 15

1 = X

15/3 = X

5 = X

Therefore, 5 bags of cement are required.

3 0
3 years ago
Please help me with 17 and 18. The first best answer gets brainlist.
ziro4ka [17]

Answer:

18 is D im pretty sure

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The Dallas Development Corporation is considering the purchase of an apartment project for $100,000. They estimate that they wil
katovenus [111]

Answer:

  • <u>The rate of return is 8.15%</u>
  • <u>This is a good investment</u>

<u></u>

Explanation:

For the first question, you need to find the rate that makes the present value of a stream of ten constant annual payments of $15,000 equal to the $100,000 investment.

The formula that returns the present value of a constant payment is called the annuity formula and is:

      Present\text{ }value=payment\times \bigg[\dfrac{1}{r}-\dfrac{1}{r(1+r)^t}\bigg]

In your problem you know:

  • Present value: $100,000
  • payment: $15,000
  • r: ?
  • t: 10

You cannot solve for r directly. You must guess a value and calculate the right side of the equation until to you find the rate that makes it equal to 100,000.

Try 5%:

       \$15,000\times \bigg[\dfrac{1}{0.05}-\dfrac{1}{0.05(1+0.05)^{10}}\bigg]=\$115,826

Then, the rate of return is greater than 5%. After several trials you will find that the rate of return is 8.15%.

Since this rate is higher than 8%, which is what the company requires, this is a good investment.

5 0
3 years ago
Given: ⅓ (18x + 27) = 81 Prove: x = 12
sasho [114]

Answer:

Firstly, rewrite the equation:

⅓ (18 + 27) = 81

Substitute x for the given number of it's supposed equivalent.

In this case x = 12.

⅓ (18(12) + 27) = 81

Solve using PEMDAS and simplify what is in the parenthesis first. Then, multiply.

(18 x 12) + 27 = 243

Now, solving using PEMDAS, multiply the total of what you got that was originally in the parenthesis by ⅓ .

⅓ (243) = 81

When you multiple these number they are equivalent to 81.

81 = 81

Since the equation given, when substituted x for 12, is equivalent to 81, this proves that substituting x for 12 makes this equation true.

4 0
3 years ago
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