On one play, a football team gained 9 yards. On the next play, the football team received a penaltyof -10 yards.

Answers

Answer 1
Answer:

Answer:

If your asking what the sum of the yards is it would be -1

Step-by-step explanation:

First I would make a number line from -10 to positive 10. Then from zero add nine. Then subtract 10 from 9. Since 10 is bigger than nine it would be a negative number. Hope this helped.


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Martin burns 360 calories running for 30 minutes. Paul burns 165 calories for every 15 minute he runs. If Kara runs for 20 minutes, how many calones would she have to burn to have a rate calories burned per minute of running that is between Martin and Paul? Please explain and give evidence.​

Answers

Answer:  She would have to burn between 220 and 240 calories per minute to have a calorie burn rate between those of Martin and Paul.

Step-by-step explanation:

Martin:

360 calories / 30 min = 12 calories/min

Paul:

165 calories / 15 min = 11 calories/min

Kara:

Needs to burn between 11 and 12 calories/min, so we'll calculate the range:

11 calories/min x 20 min = 220 calories (minimum # calories she can burn)

12 calories/min x 20 min = 240 calories (maximum # calories she can burn)

There are approximately 2.2 million deaths per year in country A. Express this quantity as deaths per minute

Answers

1 year = 365 days
365 days = 365*24 hours
365*24 hours = 365*24*60 minutes

2.2 million deaths / year
2.2 * 10^6 deaths / (365*24*60) minutes
4.186 deaths / minute

Answer: Approximately 4 deaths per minutes.

Step-by-step explanation:

Since, 1 year = 365 days,

1 day = 24 hours,

1 hour = 60 minutes,

⇒ 1 year = ( 365 × 24 × 60 ) minutes = 525600 minutes,

If the numbers of deaths in one year = 2.2 million = 2200000

⇒ The numbers of deaths in 525600 minutes = 2200000

⇒ The number of deaths in 1 minute = 2200000/525600 = 4.18569254186 ≈ 4

Hence, There are approximately 4 deaths per minutes.

Mary has three lengths of cable, 3/6 yard long, 1/4 yard long, and 1/3 yard long, which two pieces together make a length of 20/24 yard? I

Answers

Answer:

(3)/(6)+(1)/(3)

Step-by-step explanation:

To answer this question, we have to sum each pair of cable and see which one results in 20/24.

(3)/(6)+(1)/(4)=(12+6)/(24)=(18)/(24)=(3)/(4)

(3)/(6)+(1)/(3)=(9+6)/(18)=(15)/(18)=(5)/(6)

(1)/(4)+(1)/(3)=(3+4)/(12)=(7)/(12)

Now, if we simply 20/24, we have:

(20)/(24)=(10)/(12)=(5)/(6)

As you can see, the answer is the second sum above, because they have the same basic fraction.

Therefore, the answer is

(3)/(6)+(1)/(3)

Answer:

3/6 + 1/3

Step-by-step explanation:

20/24 can be devided top and bottom by 4 which would equal 5/6, if you add 3/6 + 1/3 also equals 5/6.

Amelia used 19/20 pounds of flour to bake a cake. Write the quantity of flour she used in ____ decimal form. The decimal quantity of the flour Amelia used to bake the cake is pound.

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Answer:

The decimal quantity of the flour Amelia used to bake the cake is 0.95 pound.

Step-by-step explanation:

Amelia used 19/20 pounds of flour to bake a cake.

We have to write the quantity of flour she used in decimal form.

To write in decimal form, we will divide 19 by 20.

So, the decimal quantity of the flour Amelia used to bake the cake is 0.95 pound.

.95 just divide 19/20

What is 0.063 in scientific notation?

Answers

Remember that you must change this number so that it is between 1 and 10, and then multiply it by a power of 10.

So first, you have to move the decimal point over 2 places to the right.

Since you are moving to the right, the exponent on ten will be negative; since you moved 2 decimal places, you know the exponent will be -2.

The answer is 6.3 x 10^-2.

Hope this helps!
To put a number into scientific notation, we multiply or divide the number by 10 over and over until we have a number between 1 and 10.  But we can't just change a number so we have to account for what we did by describing how many times we multiplied or divided with exponents.

Each time we multiply by 10 the decimal moves 1 place to the right.  Each time we divide by 10 the decimal moves 1 place to the left.  The exponent we use will describe the number of times we moved the decimal to the right or left.  The exponent will be positive or negative to describe the direction we need to move the decimal to represent our original number.

I know... that sounds confusing, but it's really easy!  Let's do yours...

0.063

Now we need to move the decimal to get a number between 1 and 10.  So we move the decimal 2 places to the right to get 6.3

Now we have to describe how to get to the original number with the exponents.  We moved the decimal 2 places right so to get our number back we would have to move it back 2 places to the left so  negative exponent 2...  Here's how we represent it..

6.3 x 10^-2

So what that says is if we take 6.3 and divide it by 10 twice we will get our original number.

Let's do another...

0.000000000623

We move the decimal 10 places to the right so our scientific notation is

6.23 x 10^-10

What about very large numbers...

650,000,000,000 = 6.5 x 10^11

(In that one the exponent is positive because we have to multiply to get back to the original number)

Hope this helps!

Line passing through the points (1, -1) and (9, 3)

Answers

Answer:

Step-by-step explanation:

(3+1)/(9-1) = 4/8 = 1/2

y + 1 = 1/2(x -1)

y + 2/2 = 1/2x - 1/2

y = 1/2x - 3/2