Please help quickly gets brainliest
Please help quickly gets brainliest - 1

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Answer 1
Answer:

(3)/(2) =(90)/(60) =(120)/(80)

They are proportional with a ratio of 2:3


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Using the numbers 2,3,5,8 to make an equation to  equal 104

Answers

The resulting equation is 8[(5*3)-2]=104

Equation :

We have to make an equation by using numbers 2,3,5,8  and equal to 104

Now set the given number in such order so that we can get 104.

                 5*3*8-2*8=104\n\n8[(5*3)-2]=104

The resulting equation is 8[(5*3)-2]=104

Learn more about the equation of function here:

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One correct answer is:

8(2×5 + 3) = 104.

Explanation:

We start with 104 and work backward.  

104 is divisible by 8:
104/8 = 13.

This means we need to make 13 out of 2, 3 and 5.

13 = 10+3.

This leaves us 10 to make out of 2 and 5; 2*5 = 10, so we have:

8((2*5)+3) = 104.

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.

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A figure skater needs a total score of at least 90 to move on to the next round. The total score is the average of four judges’ scores. The first three judges’ scores were 83, 88, and 92. The figure skater made it to the next round. What is the minimum score the fourth judge could have given? Enter your answer in the box.

Answers

It would be 83+88+92+x/4 = 90

263 +x = 360

x = 360-263

x=97


Answer:

97 :)

Step-by-step explanation:

You have 5,814 feet of rope that you need to cut into 27-foot sections. How many sections of rope will you have?a. 215 sections with 8 feet left over
b. 215 sections with 9 feet left over
c. 218 sections with 3 feet left over
d. 215 sections with 3 feet left over

Answers

The answer is d. 215 sections with 3 feet left over

To calculate this, divide the length of the rope (l1) by the length of the section (l2).
n - number of sections

n = l1/l2
l1 = 5,814 ft
l2 = 27 ft

n = 5,814 / 27 = 215.3 sections
215.3 sections can be written as 215 (whole) sections with 3 ft left over.

What is the answer to this question? (Geometry)

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