2 years ago

I don't know how to do this?

Mathematics

1 answer:

Andre45 [30]2 years ago

6 0

What is it? I will help u if I knew what it is.

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Both questions I need help on! Thank you.

svetoff [14.1K]

Please help us!!we really need gwlp

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Prove algebraically that (m + 2)2 – m 2 – 12 is always a multiple of 4

Julli [10]

Answer:

$(m + 2)^{2} - m^{2} - 12 = 4(m - 2)$

Step-by-step explanation:

Step 1:

Write the expression

$(m+2)^{2} - m^{2} - 12$

Step 2: Expand $(m + 2)^{2}$

$(m+2)^{2} - m^{2} - 12\\(m+2)(m+2) - m^{2} - 12\\m^{2} + 2m + 2m + 4 - m^{2} - 12$

Step 3: Collect similar terms

$m^{2} - m^{2} + 4m + 4 - 12\\4m - 8$

Step 4: Factor 4 out of the expression to prove that the expression is a multiple of 4.

$Therefore\\4m - 8 = 4(m - 2)\\Hence,\\(m+2)^{2} - m^{2} - 12 is a multiply of 4 because the expression is equal to 4(m-2)$

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Marvin collects trading cards.He stores them in boxes that hold 235 cards each.If Marvin has 4 boxes full of cards, how many car

Taya2010 [7]

235 * 4 = 940 your answer is A

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A car is traveling at a rate of 55 miles per hour . Let x=time in hours and y=number of miles . What is the equation that models

Orlov [11]

Givens

The equation is miles = rate of travel * hours.

Let the rate of travel = k

Let the miles = y

Let the number of hours = x

Equation

y = k*x Is the answer that you seek <<<<<Answer

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What is the best defenition for sample as used in in statistics

leva [86]

Answer: Well sampling is the process of choosing a representative sample from a target population and collecting data from that sample in order to understand something about the population as a whole. A data sample is a set of data collected and the world selected from a statistical population by a defined procedure.

Step-by-step explanation:

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