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4 years ago

What is the definition of A net (of a shape)

2 answers:

6 0

Answer: A pure mathematics internet could be a 2-dimensional form that may be rolled-up to make a three-d form or a solid. Or a internet could be a pattern created once the surface of a solid figure is ordered out flat showing every face of the figure. A solid could have totally different nets.

Step-by-step explanation: A pure mathematics web could be a 2-dimensional form which will be closed to make a third-dimensional form or a solid. Or a web could be a pattern created once the surface of a solid figure is arranged out flat showing every face of the figure. A solid could have completely different nets.

vlabodo [156]4 years ago

6 0

Answer:

Its basicly a 3d shape broken down into smaller 2d shapes that make the 3d shape up.

Step-by-step explanation:

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According to the New York Stock Exchange, the mean portfolio value for U.S. senior citizens who are shareholders is $183,000. As

Lady_Fox [76]

Answer:

The test statistic value t = 1.64 < 2.0086 at 0.05 level of significance

Null hypothesis is accepted

The mean portfolio value for all senior citizen shareholders in this region might not be the same as the mean value reported for their counterparts across the nation

Step-by-step explanation:

Step(i):-

Given mean of the population (μ) = $183,000

Given mean of the sample (x⁻) = $198,000

Given standard deviation of the sample (S) = $65,000.

Mean of the sample size 'n' = 51

level of significance α = 0.05

Step(ii):-

Null hypothesis : H₀ : There is no significance difference between the means

Alternative Hypothesis :H₁: There is significance difference between the means

Test statistic

$t = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$t = \frac{198,000- 183,000 }{\frac{ 65,000}{\sqrt{51} } }$

t = 1.64

Step(iii)

Degrees of freedom ν = n-1 = 51-1 =50

t₀.₀₅ = 2.0086

The calculated value t = 1.64 < 2.0086 at 0.05 level of significance

Null hypothesis is accepted

Final answer:-

There is no significance difference between the means

The mean portfolio value for all senior citizen shareholders in this region might not be the same as the mean value reported for their counterparts across the nation

4 0

3 years ago

I really need your help

nata0808 [166]

Answer: The median is 30.

1.) Line up each number in numerical order based on the data set.

- 27, 28, 28, 29, 29, 29, 30, 30, 30, 31, 31, 31, 33, 34.

2.) Cross out the numbers from inside out. (Find the middle number.)

- Because the data set has an even amount of numbers, you are left with 2 middle numbers. (30 & 30)

- In this case, you add the numbers together (30 + 30) and divide them by 2. (60/2)

- You end with the result of 30, therefore your answer (the median) is 30.

4 0

3 years ago

I need help with this math

Anit [1.1K]

Answer:

x=9 y=-4

Step-by-step explanation:

1) to eliminate a variable make sure they are the same so you can cancel them out

lets eliminate x

-3 and -2 share a GCF of 6 so

2(-3x-4y=-11)

-6x-8y=-22

3(-2x-6y=6)

-6x-18y=18

-6x-8y=-22

-6x-18y=18

--------------------------

10y=-40

y=-4

2)substitute y as -4 in the second equation

-2x-6(-4)=6

-2x+24=6

-2x=-18

x=9

6 0

3 years ago

Read 2 more answers

Please solve...Thanks

liberstina [14]

Micheal has 40ft of fencing for the rectangular dog run. So the perimeter of the dog run is 40ft.

Perimeter=40ft

The perimeter of a rectangle is:

P=2l+2w

Since we know the length is 5 and the perimeter is 40, we can solve for the width.

P=2l+2w
40=2*(5)+2w
40=10+2w
subtract 10 from both sides
30=2w
divide both sides by 2
15=w

The width of the fence is 15feet.

3 0

3 years ago

- 28 5 + 3 y help pls

Mariulka [41]

Answer:

-282y

Step-by-step explanation:

8 0

3 years ago