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Otrada [13]
3 years ago
6

A gym owner has some purple weights and some white weights. The purple weights are 10 kilograms each, and the white weights are

6 kilograms each. The owner has 12 weights, and they weigh 84 kilograms in all. How many of each colour weight does he have?
Mathematics
1 answer:
snow_lady [41]3 years ago
8 0

Answer: 3,9

Step-by-step explanation:

Given

A gym owner has purple and white weights that measure 10 kg and 6 kg each

respectively.

They weigh 84 kg in total

suppose there x purple and y white weights

\therefore x+y=12\quad \ldots(i)\\\Rightarrow 10x+6y=84\quad \ldots(ii)\\\\\text{Solving }(i)\ \text{and }(ii)\\\\

x=3,\ y=9

Thus, there are 3 purple and 9 white weights.

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List the following fractions from least to greatest.
sleet_krkn [62]
<h3>Answer: Choice A) 1/7, 3/7, 4/7, 6/7</h3>

========================================================

Explanation:

All of the fractions, for each of the answer choices, has a denominator of 7. This means we can ignore them when it comes to sorting out the fractions. Focus only on the numerators.

  • Choice A has numerators 1,3,4,6 in that order from left to right. This is in increasing order (ie smallest to largest), so this is why choice A is the answer.
  • Choice B has the numerators 6,4,3,1 in that order. This is from largest to smallest, which is the complete opposite of what we want. Choice B is incorrect.
  • Choice C has numerators 1,6,4,3 which is in neither order. Rule this out as well.
  • Choice D has numerators 3,4,1,6 and we can rule it out for similar reasoning as choice C.

If you want, you can convert each fraction to decimal form to sort out the decimals that way, then convert back to fraction form.

4 0
3 years ago
$1689 invested for 4 years at 3% compounded annually ?
Ira Lisetskai [31]

The amount gotten after $1689 invested for 4 years at 3% compounded annually is $1901

The amount of money gained after an investment is compounded is given by:

A=P(1+\frac{r}{n} )^{nt}

Where P is principal, A is the final amount, r is the rate, n is the number of times compounded per period and t is the time

Given that P = $1689, t = 4, r = 3% = 0.03, n = 1, hence:

A=P(1+\frac{r}{n} )^{nt}\\\\A=1689(1+\frac{0.03}{1} )^{4*1}\\\\A=\$1901

The amount gotten after $1689 invested for 4 years at 3% compounded annually is $1901

Find out more at: brainly.com/question/14295570

5 0
2 years ago
A sugar solution currently measures 250 degrees Fahrenheit. The temperature of the solution increases 5 degrees per minute. The
larisa [96]
Let, the number of minutes = x
It  would be: 310 < 250 + 5x < 338

In short, Your Answer would be Option A

Hope this helps!
5 0
3 years ago
Read 2 more answers
PLEASE I NEED HELP FAST!!!! :(
USPshnik [31]

Answer:

Slide/Transformation

Step-by-step explanation:

If you slide the rectangle, it would fit in the new coordinates. You might have to slide it multiple directions.

Plz mark brainliest!! :P

3 0
3 years ago
Someone pls helpppppppp
frutty [35]

Answer:

well the first one is x^3 y^2 z 7root x^2 z

5 0
3 years ago
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