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3 years ago

Which of the following demonstrates the commutative property across multiplication for 2× 10 × 7

Mathematics

2 answers:

Phoenix [80]3 years ago

5 0

Its A. Kelp dont you dare.

Darina [25.2K]3 years ago

5 0

Hey there, commutative property is when you mix up the numbers but you will still the same answer. 2*10*7=140. 10*7*2=140. Therefore, the answer would be A. 10*7*2

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13% of 400 is what number

Alchen [17]

Answer:

52 = W

Step-by-step explanation:

Is means equals and of means multiply

13% * 400 = W

Change to decimal form

.13 *400 = W

52 = W

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4 years ago

Solve the system by elimination<br> -6x + 6y = 0<br> 9x - 8y = 4

jarptica [38.1K]

Answer:

Point form: (4, 4)

x = 4, y = 4

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3 years ago

Why is it important that we tell Native American stories?

Orlov [11]

Answer:

Utilizing storytelling to transmit educational messages is a traditional pedagogical method practiced by many American Indian tribes. American Indian stories are effective because they present essential ideas and values in a simple, entertaining form. Different story characters show positive and negative behaviors.

Step-by-step explanation:

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3 years ago

I HAVE 1 HUNDREDS, 9 TENS, 9 ONES, 8 TENTHS AND 1 HUNDRETHS.WHAT NUMBER AM I?

myrzilka [38]

199.81 is the answer

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4 years ago

Final exam scores are normally distributed with a mean of 74 and a standard deviation of 6. Approximately, what percentage of fi

notka56 [123]

Answer:

81.86%

Step-by-step explanation:

We have been given that final exam scores are normally distributed with a mean of 74 and a standard deviation of 6.

First of all we will find z-score using z-score formula.

$z=\frac{x-\mu}{\sigma}$

$z=\frac{68-74}{6}$

$z=\frac{-6}{6}=-1$

Now let us find z-score for 86.

$z=\frac{86-74}{6}$

$z=\frac{12}{6}=2$

Now we will find P(-1<Z) which is probability that a random score would be greater than 68. We will find P(2>Z) which is probability that a random score would be less than 86.

Using normal distribution table we will get,

$P(-1$