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2 years ago

What method would you choose to solve the equation 2x^2-7=9? Explain why you chose this method

Mathematics

1 answer:

emmasim [6.3K]2 years ago

4 0

Answer:

PEMDAS

Step-by-step explanation:

parenthesis, exponents,multiplication,division,additon,substraction, these are the steps in order to follow when solving equations.

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Compute the permutations and combinations. 4 P 4 1 4 24

lawyer [7]

The answer is a.
4 P 4 = 24

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3 years ago

PLEEEEEEEAAAAAAAAAASSSSSSSSSEEEEEEE a wee this quickly How did he get answer A

Simora [160]

Answer:

To get answer A, Dave took 47*5 = 235

Step-by-step explanation:

There are 147 containers that contain 5 gallons each. We need to multiply to find the total number of gallons.

total number of gallons = containers * number of gallons per container

= 147* 5 gallons per container

=735 gallons

To get answer A, Dave took 47*5 = 235

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3 years ago

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match each pair of points with the approximate distance between them. Round your answers to the nearest tenth.

NARA [144]

I hope it helps you.

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3 years ago

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The stock price for International Business Machines (IBM) historically has followed an approximately normal distribution (when a

olganol [36]

Answer:

0.494 is the probability that on a selected day the stock price is between $186.26 and $192.47.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $188.876

Standard Deviation, σ = $4.6412

We are given that the distribution of stock price is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(stock price is between $186.26 and $192.47)

$P(186.26 \leq x \leq 192.47) = P(\displaystyle\frac{186.26 - 188.876}{4.6412} \leq z \leq \displaystyle\frac{192.47-188.876}{4.6412}) = P(-0.5636 \leq z \leq 0.7743)\\\\= P(z \leq 0.7743) - P(z < -0.5636)\\= 0.781 - 0.287 = 0.494 = 49.4\%$

$P(186.26 \leq x \leq 192.47) = 49.4\%$

0.494 is the probability that on a selected day the stock price is between $186.26 and $192.47.

5 0

2 years ago

Does anyone know what 2 to the 3rd power means?

mel-nik [20]

the power (or exponent) of a number says how many times to use the number in a multiplication. It is written as a small number to the right and above the base number. In this example the little "2" says to use 3 times in a multiplication: 2x2x2= 8

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3 years ago