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3 years ago

What is the simplified form of the expression? 5c2-4c+3D-3+2c2d-3c+d-7

Mathematics

1 answer:

Gwar [14]3 years ago

7 0

3c + 4d + 4cd - 7

Hope this helps

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A company advertises that its cans of caviar each contain 100 g of their product. A consumer advocacy group doubts this claim, a

Blizzard [7]

Answer:

The value of the test statistic is -3.14.

Step-by-step explanation:

Test statistic:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the expected value, $\sigma$ is the standard deviation and n is the size of the sample.

A company advertises that its cans of caviar each contain 100 g of their product.

This means that $\mu = 100$

They calculate a sample mean weight of 99 g and a sample standard deviation of 0.9 g. Sample of 8 cans.

This means that $X = 99, \sigma = 0.9, n = 8$

So the test statistic will be given by:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{99 - 100}{\frac{0.9}{\sqrt{8}}}$

$t = -3.14$

The value of the test statistic is -3.14.

8 0

3 years ago

Henry says he can write an 8 in each box to make both equations true. Is he correct?

Rama09 [41]

Answer:

yes it's true because 3 groups of 8 is 24

4 0

3 years ago

Take any three digit number. Reverse its digits and subtract the smaller of the two numbers from the larger. Determine what numb

rjkz [21]

Answer: 11 is the required number that always divides such differences for the following types of numbers.

Step-by-step explanation:

Take any 3 - digit number, say, 325

On reversing its digit it becomes, 523

On subtracting the smaller of the two numbers from the larger, $523-325\\\\=198$

we can see that 198 is an even number.

take another number say, 629

On reversing its digit, it becomes = 926

On subtracting , we get that

$926-629=297$

But 297 is not an even number.

But there is one common in both the cases is that both the differences are divisible by 11.

Hence, 11 is the required number that always divides such differences for the following types of numbers.

8 0

3 years ago

How many solutions does the following equation have? -1/3x2=5/6+1/3y2 5y2=25/2-5x2

Phantasy [73]

The system of equations have 2 solutions

<h3>How to determine the number of solutions?</h3>

The system of equations is given as:

-1/3x² = 5/6 + 1/3y²

5y² = 25/2 - 5x²

Next, we plot the graph of the system of equations.

From the attached graph, the equations intersect at two points

Hence, the system of equations have 2 solutions

Read more about system of equations at:

brainly.com/question/12895249

#SPJ1

6 0

2 years ago

What is the answer? Please help me!!! PLEASE!!!!

sladkih [1.3K]

Answer:

a.) y=1/3x +3

Step-by-step explanation:

8 0

2 years ago