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3 years ago

Find the surface area

Mathematics

2 answers:

Levart [38]3 years ago

7 0

57.4 m

explanation

for the triangles you do
1/2(bh)(2)

for the other sides which are the 3 rectangles you do
3(bh)

____ [38]3 years ago

3 0

57. 4 meters hope I helped

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Can someone please help me with this maybe get a better understanding if you have the time to tell me?

Colt1911 [192]

Step-by-step explanation:

Absolute value function:

|x| = x when x >= 0.
|x| = -x when x < 0.

Swim 3 feet under water => |-3|

Stand 20 feet above => |20|

Using the absolute value function,

we have |-3| = 3 and |20| = 20.

Since 3 is less than 20, |-3| < |20|. (C)

5 0

3 years ago

One sample has a mean of and a second sample has a mean of . The two samples are combined into a single set of scores. What is t

Murrr4er [49]

Answer:

a) For this case we can use the definition of weighted average given by:

$M = \frac{ \bar X_1 n_1 + \bar X_2 n_2}{n_1 +n_2}$

And if we replace the values given we have:

$M = \frac{8*4 + 16*4}{4+4}= 12$

b) $M = \frac{8*3 + 16*5}{3+5}= 13$

c) $M = \frac{8*5 + 16*3}{5+3}= 11$

Step-by-step explanation:

Assuming the following question: "One sample has a mean of M=8 and a second sample has a mean of M=16 . The two samples are combined into a single set of scores.

a) What is the mean for the combined set if both of the original samples have n=4 scores "

For this case we can use the definition of weighted average given by:

$M = \frac{ \bar X_1 n_1 + \bar X_2 n_2}{n_1 +n_2}$

And if we replace the values given we have:

$M = \frac{8*4 + 16*4}{4+4}= 12$

b) what is the mean for the combined set if the first sample has n=3 and the second sample has n=5

Using the definition we have:

$M = \frac{8*3 + 16*5}{3+5}= 13$

c) what is the mean for the combined set if the first sample has n=5 and the second sample has n=3

Using the definition we have:

$M = \frac{8*5 + 16*3}{5+3}= 11$

7 0

3 years ago

Can someone please answer A and B please?

marta [7]

2 bags

7 apples

A) Instead of a lets say:

a = 1, 2 , 3

If a =1 then, (you already know there are 2 bags) you have 1 apple in each bag, making total of 2 apples

If a =2 then you are having 2 apples in each bag making total of 4 apples

If a =3, 3 apples in each bag, making total of 6 apples

Conclusion:

2 * 1 = 2

2 * 2 = 4

2 * 3 = 6

See the difference & pattern here

Now lets do with a

2 * a = 2a

B) If a = 6

then, 2*6 = 12

lets continue from a =3

2*4=8

2*5=10

2*6=12

See the pattern again

Tip: Drawing making problem understand better.

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3 years ago

The linear function in the graph shows the population of Greeville in the years since 2010.

labwork [276]

<span>approximately 2000 less than is your answer.</span>

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Zinaida [17]

Answer:

Step-by-step explanation:

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