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3 years ago

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Mathematics

2 answers:

Mademuasel [1]3 years ago

7 0

The first option, as it positively supports the claim stated.

oee [108]3 years ago

3 0

Answer:

"Playing video games has been shown to enhance memory and even increase brain volume"

Step-by-step explanation:

The claim is approves the usage of video games.

The first piece of evidence supports the usage, citing how video games can "enhance memory" which is positive.

The second piece of evidence does the opposite and disapproves video games, citing them as an "addiction" which is negative.

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Marco starts with a population of 10 bacteria that doubles every day for a number of days, d. He writes the expression 10(2d) to

riadik2000 [5.3K]

Answer:

Marco- 10 is the starting value of the population. 2 is the growth rate of "double each day" with d as an exponent.

Isabella- 1 is the starting population. 1+0.2=1.2 is the rate at which it grows each day.

Step-by-step explanation:

Marco's equation should be $10(2^{d})$ since the bacteria double each day. 10 is the starting value of the population. 2 is the growth rate of "double each day" with d as an exponent. This will double each day because:

Day 1 is $2^{1}=2$

Day 2 is $2^{2}=4$

Day 3 is $2^{3}=8$

Day 4 is $2^{4}=16$

You'll notice the value doubles each day.

Isabella has a different equation because her population increases by a percentage. We use the simple interest formula to calculate the bacteria's daily increase or interest.

1(1+0.2)d

1 is the starting population.

1+0.2=1.2 is the rate at which it grows each day.

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4 years ago

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Which property is demonstrated by the equation (5 + a) + 3 = (a + 5) + 3?

sineoko [7]

Answer:

Communitive Property

Step-by-step explanation:

Commutative property = 2 + 3 = 3 + 2 or 2(3) = 3(2)

Associative Property = (2 x 3) 5 = 2 (3 x 5) or (2 + 3) + 5 = 2 + (3 + 5)

Inverse Property = 2 + (-2) = 0 or (2/1)(½) = 1

Basic Definitions:

Commutative Property - Gives you the ability to switch the order of the numbers in an expression.

Associative Property - Let's you move the parenthesis in an expression but not the numbers.

Inverse - Uses numbers like 0 and 1.

Using these basic definitions and examples, we can summarize that the best answer would be Communitive Property

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3 years ago

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ladessa [460]

Answer:

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Step-by-step explanation:

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TiliK225 [7]

Answer:

Step-by-step explanation:

I not completely sure but I think it 1

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Gabriel saves 40% of his monthly paycheck for college. He earned $270 last month. How much money did Gabriel save for college?

Tems11 [23]

He has saved about $162 for college.

If you have more questions about math... just ask me!

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4 years ago

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