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Ivanshal [37]
3 years ago
14

3 + (5 + 4) = 3+ (4 + 5) illustrates which property?​

Mathematics
2 answers:
posledela3 years ago
8 0

Answer:3(4+5)= 3(4)+3(5)

Step-by-step explanation:

o-na [289]3 years ago
3 0

Answer:

Distributive

Step-by-step explanation:

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What is the area of the rectangle? (area = length x width)
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Answer:

C. 10 Units

Step-by-step explanation:

Multiply two and five together to get ten. You can get these numbers by counting the amount of space between each dot.

8 0
3 years ago
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Select the correct answer.
mr Goodwill [35]
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6 0
2 years ago
A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measurin
Ratling [72]

Answer:

The standard deviation of weight for this species of cockroaches is 4.62.

Step-by-step explanation:

Given : A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measuring the weights of many of these cockroaches, a lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

To find : What is the approximate standard deviation of weight for this species of cockroaches?

Solution :

We have given,

Mean \mu=50

The sample mean x=55

A lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

i.e. P(X>55)=14%=0.14

The total probability needs to sum up to 1,

P(X\leq 55)=1-P(X>55)

P(X\leq 55)=1-0.14

P(X\leq 55)=0.86

The z-score value of 0.86 using z-score table is z=1.08.

Applying z-score formula,

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

Where, \sigma is standard deviation

Substitute the values,

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

1.08=\frac{55-50}{\sigma}

1.08=\frac{5}{\sigma}

\sigma=\frac{5}{1.08}

\sigma=4.62

The standard deviation of weight for this species of cockroaches is 4.62.

4 0
3 years ago
Please help me I’ll mark you as brainliest! Answer quickly pleaseee
Scrat [10]

Answer:

i need the triangle

Step-by-step explanation:

the question is incomplete... show the diagram of the triangle

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3 years ago
If you change the sign of a point’s -coordinate, how will the location of the point change?
Elena L [17]
It would go to the opposite side
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