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madreJ [45]
3 years ago
10

Help please?!

Mathematics
1 answer:
grandymaker [24]3 years ago
4 0
1) The typical sprint time is found by computing the average of the different sprint times, therefore the choice is between option A and C. The average is more accurate when you have a lot of measurements, therefore, since Lamont can run more times in a week than in a day, the correct answer will be:
<span>C) Sprint the 100 meters several times throughout the week and determine his average time to complete from the various runs.

2) T</span><span>he typical amount of energy usage is the average usage for all the neighborhood in one month. Therefore, to calculate the average, you will have to consider the total amount of energy used in a year by all the houses and divide it by the number of months in one year. Therefore, the correct answer will be:
</span><span>B) Take the energy usage of all the homes in the neighborhood for a year, and then divide it by 12.</span>
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Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. Kevin spins th
elena-s [515]
Hello!

You add the amount of sections have red or purple

2 + 2 = 4

Put this over the amount of sections

4 / 10 = 0.4

Multiply this by the amount of times he spins the spinner

180 * 0.4 = 72

The answer is about 72 times

Hope this helps!
8 0
4 years ago
What is the opposite of 1/2​
Amanda [17]

Answer:

-2

Step-by-step explanation:

8 0
3 years ago
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Expand (2+x)^-3<br><br><br><br><br><br><br><br> ....
pentagon [3]

Answer:

1/(x^3 + 6x^2 + 12x + 8)

Step-by-step explanation:

The first thing we do is rationalize this expression. (2+x)^-3 is written as

1/(2+x)^3

Then from there we can foil out the denominator. It is easiest to foil (2+x)(2+x) first and then multiply that product by (2+x).

(2+x)(2+x) = 4 + 4x + x^2

(4+4x+x^2)(2+x) = 8+8x+2x^2+4x+4x^2+x^3.

Then we combine like terms and put them in order to get:

x^3 + 6x^2 + 12x + 8

And of course we can't forget that this was raised to the negative third power, so our answer is 1/(x^3 + 6x^2 + 12x + 8)

6 0
3 years ago
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Help me solve this algebra 1 question please
s344n2d4d5 [400]
You should know that simply your answer
3 0
3 years ago
Solve the proportional equation b/10=3/5
ra1l [238]

Answer: b is 6

Step-by-step explanation:

Set the proportions up and solve for b

b. 3

---- = ------

10. 5

3 0
3 years ago
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