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hjlf
3 years ago
10

How many ways can you stack 77 books into equal piles?

Mathematics
1 answer:
dybincka [34]3 years ago
7 0
Hello There!

You can stack it in 2 ways.

Hope This Helps You!
Good Luck :)
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A 40% dye solution is to mixed with a 53% dye solution to get 260L of a 50% solution. How many liters of the 40% and 50% solutio
VLD [36.1K]
<h3>60 liters of 40 % dye solution is mixed with 200 liters of 53 % dye solution to get 260 liters of 50 % dye solution</h3><h3><u>Solution:</u></h3>

From given,

Final solution is 260 liter

Let x be the liters of 40 % dye solution

Then, (260 - x) is the liters of 53 % dye solution

Therefore, according to question,

x liters of 40 % dye solution is mixed with (260 - x) liters of 53 % dye solution to get 260 liters of 50 % dye solution

<h3><u>Thus we frame a equation as:</u></h3>

40 % of x + 53 % of (260 - x) = 50 % of 260

Solve for "x"

\frac{40}{100} \times x + \frac{53}{100} \times (260-x) = \frac{50}{100} \times 260\\\\0.4x+ 0.53(260-x) = 0.5 \times 260\\\\0.4x + 137.8 - 0.53x = 130\\\\0.13x = 137.8 - 130\\\\0.13x = 7.8\\\\Divide\ both\ sides\ by\ 0.13\\\\x = 60

Thus 60 liters of 40 % dye solution is used

Then, (260 - x) = 260 - 60 = 200

Thus 200 liters of 53 % dye solution is used

5 0
4 years ago
Hillary is collecting some stationery for her students. The ratio of the number of pencils to the number of erasers is 3 : 4. Sh
lord [1]
She has 20 erasers and 15 pencils
4 0
3 years ago
What is the value of 4x-7 when x=0?
olya-2409 [2.1K]

Answer:

-7

Step-by-step explanation:

= 4x - 7

= 4(0) - 7

= 0 - 7

= -7

5 0
4 years ago
Read 2 more answers
Say that you (or your parents) are purchasing a new car for $22,358. The sales tax is 6.45%, the down payment is 10% of the tota
Nastasia [14]

9514 1404 393

Answer:

  (a)  $133.88

Step-by-step explanation:

The addition of tax multiplies the purchase price by 1+6.45% = 1.0645. The payment of the down payment means the loan amount will be only 1-10% = 0.90 times the amount with tax. So, the loan amount is ...

  $22,359(1.0645)(0.90) = $21,420.08

The loan is a secured loan (secured by the vehicle). So, the interest charged is that for a poor credit rating: 7.5%.

One month's interest is ...

  I = Prt . . . . . interest on principal P at rate r for t years (1 mo = 1/12 yr)

  I = $21,420.08(0.075)(1/12) = $133.88

3 0
3 years ago
Please help! Also please make sure you include a let statement :) Thank you
nata0808 [166]

Answer:

this is more than one question

Step-by-step explanation:

4 0
3 years ago
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