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4 years ago

Is this true or false? If the volume is the same as another one, The cubes would be the same also.

Mathematics

2 answers:

Rashid [163]4 years ago

8 0

Objects with the same volume don't have to be the same shape, or material. False.

sweet-ann [11.9K]4 years ago

6 0

False. Shapes do not have to be the same to have the same volume.

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Suppose a card is drawn at random from a standard deck. The card is then shuffled back into the deck. Then for a second time a c

Oduvanchick [21]

Answer:

Probability = 0.0288

Step-by-step explanation:

For the first draw.

There are total of 52 cards in a deck of cards and a total of 26 red cards in a deck of cards.

Probability of drawing a red= 26/52

Probability = 0.5

For the second draw. Actually the initial card drawn was replaced. Total number of face cards are 12.

Probability of drawing a face card = 12/52= 0.23076923

For the third draw .

There are 13 diamond cards in total.

Probability of a diamond = 13/52

Probability = 0.25

Probability of red,face, diamond= 0.5*0.23076923*0.25=0.028846

To four decimal place = 0.0288

6 0

3 years ago

Mason wrote the expression shown below 5(y+2). Write an expression that is equivalent to Mason’s expression

rusak2 [61]

Answer:

5y+10

Step-by-step explanation:

The best way to rewrite this equation is to use the distributive property.

5y+10

Or, we can just use the commutative property to switch the numbers around, but I recommend the distributive.

5(2+y)

Hope this helps!

4 0

3 years ago

On percent error, if 48% is the actual and the error rate is 20%, what is the estimate?

alex41 [277]

The estimate is 57.6 %

Solution:

Given that, On percent error, 48% is the actual and the error rate is 20%

To find: Estimate

Percent error is the difference between a measured and known value, divided by the known value, multiplied by 100%

The formula for percent error is given as:

$\text { percent error }=\frac{\text {estimated value}-\text {actual value}}{\text {actual value}} \times 100$

Here given that,

percent error = 20 %

Actual = 48 %

Estimate = ?

Let "x" be the estimate

Substituting the values we get,

$20 = \frac{x-48}{48} \times 100\\\\20 \times 48 = (x-48) \times 100\\\\960 = x - 48 \times 100\\\\x - 48 = \frac{960}{100}\\\\x - 48 = 9.6\\\\x = 48 + 9.6\\\\x = 57.6$

Thus the estimate is 57.6 %

8 0

3 years ago

3x - y = -2 slope form

yarga [219]

Answer:

y=3x+2

Step-by-step explanation:

3x - y = -2

-3x -3x

_________

-y = -3x-2

/-1 /-1

_________

y = 3x+2

5 0

4 years ago

What is the standard deviation of a sampling distribution called?

GarryVolchara [31]

Answer: Standard error.

Step-by-step explanation:

If the population is normally distributed , then the standard deviation of a sampling distribution of the sample mean $[tex]\overline{x}$ [/tex] is known as standard error which depends on population standard deviation $(\sigma)$ and the sample size (n).

$\sigma_x=\dfrac{\sigma}{\sqrt{n}}$

It measure the variability in the sample statistics that happens by chance.

Thus, the standard deviation of a sampling distribution is called the standard error.

8 0

3 years ago