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gizmo_the_mogwai [7]
3 years ago
8

Find the surface area of the prism. 4 cm 3 cm 5 cm 9 cm

Mathematics
2 answers:
iren [92.7K]3 years ago
8 0

Answer:

540cm^3

Step-by-step explanation:

4*3*5*9=12*5*9=60*9=540

stiv31 [10]3 years ago
7 0

Answer:

blah balah blah

Step-by-step explanation:

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A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obta
Strike441 [17]

Answer:  18

Step-by-step explanation:

  • The<u> sample mean</u> is the best point estimate of the population mean .

Given : A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obtained (12 18 19 20 21).

Then , the sample mean = \dfrac{\text{Sum of observations}}{\text{Number of observations}}

sample mean =\dfrac{12 +18 +19+ 20+ 21}{5}=18

Hence, A point estimate of the mean is 18.

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3 years ago
Which of the following are not linear functions? Place a check mark in the box next to each equation that is not a linear functi
insens350 [35]

Answer:

D. y = 2x² + 1

E. y = x²

Step-by-step explanation:

Linear function:

A linear function has the following format:

y = ax + b

In which a is the slope and b is the y-intercept. A constant function is linear, as it is the special case in which a = 0.

In this question:

In options D and E, the highest exponent of x is 2, which means that they are not linear functions, and so these options are the answer.

5 0
3 years ago
A submarine dives as shown in the diagram.
Marianna [84]

Answer:

Tan x = 125/500= 0.25

so x = arctan (0.25)

=14 degree

8 0
3 years ago
I’ll give you Brainliest
RSB [31]

Answer:

Step-by-step explanation: the first is m the second one is 15x+5

8 0
3 years ago
Mark dropped an object from a bridge 400 feet above the ground level with an initial velocity of 0. He knows that the gravitatio
lisabon 2012 [21]

Answer:

The first listed equation is the correct equation to solve

The correct answer is: t = 5 seconds

Step-by-step explanation:

Let me mention first that there is an error in the statement that the gravitational pull of the Earth is 16 ft/s^2. It is in fact 32 ft/s^2, and the actual equation uses half of the acceleration multiplied by the square of the variable time, so it gives as final expression :

y(t)=-16\,t^2+ 0 \,t +400

and we want to find the value/s for "t" that make this equation equal zero (when it reaches the ground and the object just touches the ground. This makes the equation we want to solve:

0=-16\,t^2+ 0 \,t +400\\16\,t^2+0\,t -400=0

which solving for "t" becomes:

16\,t^2-400 =0\\16\,t^2=400\\t^2=\frac{400}{16} \\t^2=25\\t= +/- 5\,\,sec

So we adopt the positive answer (positive time) since the negative value has no physical meaning for this problem.

That is: t = 5 seconds

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3 years ago
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