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3 years ago

Is a trapezoid a 2 dimensional figure?

2 answers:

8 0

A trapezoid can be drawn on 2 dimensional surfaces like board. So it is a 2D shape.

Tju [1.3M]3 years ago

5 0

If it can be drawn on a 2D surface such as a board, or a page etc. then it's a 2D shape. So yes a trapezoid is a 2D shape.

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Which ones are the distance formula and midpoint formula?

lutik1710 [3]

Answer:

The distance formula is $d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)2}$

The midpoint formula is $\left(\frac{x_1\:+x_2}{2}\right),\left(\frac{y_1-y_2}{2}\right)$

Step-by-step explanation:

apply the pythagorean theorem on a coordinate grid

7 0

3 years ago

Rae and Doris are training to swim a 200-meter freestyle race. The table lists their practice times during training camp.

Musya8 [376]

Answer:

24 boxes to drop down

Step-by-step explanation:

3 0

3 years ago

at a certain conference of 100 people there are 29 indian women and 23 indian men. out of these indian people, 4 are doctors and

tangare [24]

Answer:

4 women doctors

Step-by-step explanation:

because if 24 are men or doctor the 4 gotta be women doctor

3 0

2 years ago

4. Is rap music more popular among young Indians than among young Asians? A sample survey compared 634 randomly chosen Indians a

bulgar [2K]

Answer:

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap music every day.

Step-by-step explanation:

Given a sample survey compared 634 randomly chosen Indians aged 15 to 25 with 567 randomly selected Asians in the same age group.

$p_{1} = \frac{368}{634} =0.580$

It found that 368 of the Indians and 130 Asians listened to rap music every day.

$p_{2} = \frac{130}{567} =0.229$

Null hypothesis H0: there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

$p_{1} = p_{2}$

Alternative hypothesis:- $p_{1} \neq p_{2}$

Level of significance α = 0.05

The test of statistic

$z = \frac{p_{1} - p_{2}}{\sqrt{pq(\frac{1}{n_{1} }+\frac{1}{n_{2} }) } } }$

where $p = \frac{n_{1}p_{1} + n_{1}p_{2}}{n_{1}+n_{2}} = \frac{634(0.580)+567(0.229)}{634+567}$

p = 0.414

and q = 1-p = 1- 0.414 =0.586

$Z = \frac{0.580-0.229}{\sqrt{0.414(0.586)(\frac{1}{634} +\frac{1}{567} } } }$

on calculation , we get

z = 0.300 ><1.96 at 95 % level of significance

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

3 0

2 years ago

What is the inverse of the function

Angelina_Jolie [31]

Answer:

A is correct ..............

3 0

2 years ago