MATHEMATICS HIGH SCHOOL

Does anyone know any simpler ways of doing long division?
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Answers

Answer 1
Answer:

Answer: calculator?

Step-by-step explanation:

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You are decorating your bedroom. To get the paint colour you want, you mix 2 parts red with 3 parts cream and 1 part blue.How much cream and blue paint will you need to mix with 4 litres of red?

Answers

Answer:

6 liters of cream.

2 liters of blue.

Step-by-step explanation:

We are given that  To get the paint colour you want, you mix 2 parts red with 3 parts cream and 1 part blue.

Ratio is  2:3:1

Now we are given that we need to calculate how  much cream and blue paint will you need to mix with 4 litres of red

Since we are mixing 2 parts of red and we have 4 litres

⇒2 times 2 = 4 litres

So, since they mix 3 parts of cream

Thus 3*2= 6 lites

So they use 6 liters of cream.

Since they mix 1 parts of blue

Thus 1*2= 2 liters

So, they use 2 liters of blue.
The cream paint is 3/2 of the red, since there are three parts cream for every two parts red.  Similarly, the blue paint is 1/2 of the red.  Thus, there are 3/2*4=6 liters cream paint and 1/2*4=2 liters blue paint.

Please help me simplify these radicals without decimals

Answers

6) √72= √3*25= √3*2*12= √3*3*2*2*2 =3*2√2 =6√2
(just break down the numbers until they are prime numbers. )
8) √8=2√2
10) √175= 5√7
12) √192= 8√3
14) √32= 4√2

Hi There

6) √72 = 6√2

7) √98 = 7√2

8) √8= 2√2

9) √12= 2√3

10) √175 = 5√7

11) √216= 6√6

12) √192= 8√√3

13) √343 = 7√7

14) √32= 4√2

15) √28= 2√7


Hint : The first thing you need to find is the largest perfect square witch will divide evenly into the number under your radical sign .


I hope that's help !

How is 4.3 x 10^-3 the answer to this question? A sample of air from a home is found to contain 6.2 ppm of carbon monoxide. This means that if the total pressure is 695 torr, then the partial pressure of CO is..................4.3 x 10^-3.

Answers

The partial pressure of CO2 is equal to the total pressure * molar fraction of CO2.

To give 4.3 * 10^-3, they are using molar fraction = 6.2 * 10^ - 6

Because, 695 * 6.2-10^-6 = 0.004309 = 4.309 * 10^-3 = 4.3 * 10^-3.

Then the new question is why the molar fraction is consideres to be the same ppm concentration. This is because ppm means parts per million, and in this case, they are considering that the parts are moles (usually it is grams, but it is not the case, given the result).

 6.2 ppm = 6.2 / 1,000,000 = 6.2*10^-6, which is the number used above to multiply the total pressure and get the partial pressure of CO2.

If you had not told me that the result was 4.3 * 10^-3, I had assumedthat 6.2 was referred to grams and not moles and I had made a conversionusing the molar masses of the air and the CO2 but, again, this is not the case.

Final answer:

The partial pressure of CO in a home with air containing 6.2 ppm CO, when the total air pressure is 695 torr, can be calculated by (6.2 ÷ 1,000,000) x 695, which equals 4.3 x 10^-3 torr.

Explanation:

The partial pressure of a gas is the individual pressure contribution a single type of gas makes to the overall pressure of a gas mixture. In this case, a sample of air from a home was found to contain 6.2 parts per million (ppm) of carbon monoxide (CO). To calculate the actual pressure of CO in the room, we can use the fact that 1 ppm = 1 part of the substance per 1,000,000 parts of air.

To do so, we need to multiply thetotal pressure of the air, which is 695 torr, by the ratio of the CO to the total volume of the air. That would be: (6.2 ÷ 1,000,000) x 695 = 4.3 x 10-3 torr. Hence, that is how 4.3 x 10-3 is derived as the partial pressure of CO in this context.

Learn more about Partial Pressure here:

brainly.com/question/31214700

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What is the sum of the first 60 positive integers?. (Points : 1). 60. . 61. . 1800. . 1830

Answers

Hello,


if 0 is a positive integer
        sum=0+1+...+59=(0+59)*60/2=59*30=1770
else
       sum=1+2+3+...+60=(1+60)*60/2=61*30=1830
end if

Answer D: 1830
In US, 0 is not positive, in Europe yes!!!

Need help pleaseeeee:)

Answers

Answer:

75 + 64 = 139

Step-by-step explanation:

The measure of the exterior angle is 139

Answer:

2= 139

Step-by-step explanation:

A triangle is 180 degrees.

64+75= 139

180-139=41

A line is also 180 degrees

180- 41= 139

18 divided by x = -2 what is the x equal to?

Answers

18/x=-2
isolate x by multiply both sides by x:
18=-2x
divide by -2
-9=x
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