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3 years ago

PLEASE HELP ASAP! 10 POINTS AND BRAINLIEST! EXPLAIN THE ANSWER

Mathematics

1 answer:

igomit [66]3 years ago

5 0

For the first one, divide the figure into shapes you know how to use. This one can be turned into 2 rectangles and 1 square. Find the area (length*width) of each new shape and add them together. For example the rectangles would have an area that is 31*23 or 713 m.

For the second one do the same. It is 1 rectangle and 2 triangles. The area of a rectangle (length*width) in this case would be 24*8 or 192 cm and the area of the triangles are 1/2*base*height (you need to use the Pythagorean theorem to find the other length of the triangle) and add up the areas to get the total.

To find the surface area of the last one, there are 6 sides. The area of two of the sides are 15*4. Two of the sides are 15*3. The last two sides are 4*3. Add the areas up to find the total surface area.

Hope this helps! :)

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If you ride a pterodactyl for 3 hours at 10 mph and then ride a stegosaurus for 1 hour at 2 mph, what would be your average spee

g100num [7]

Answer:

8 mph

Step-by-step explanation:

The equation for average speed is:

$average\ speed=\frac{total\ distance}{total\ time}$

Let's start by finding the distance for each animal:

$d=st\\d=3h*10\frac{m}{h}\\d=30m$

$d=st\\d=1h*2\frac{m}{h}\\d=2m$

Now, we can find the average speed:

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3 years ago

Write the following phrase as an algebraic expression. Use k for the unknown.

Advocard [28]

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3 years ago

Please be quick i need this as soon as possible!

nevsk [136]

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4 years ago

According to a recent Census Bureau report, 12.7% of Americans live below the poverty level. Suppose you plan to sample at rando

larisa [96]

Answer:

a) $P(X=10)=(100C10)(0.127)^{10} (1-0.127)^{100-10}=0.0928$

b) $P(X \leq 10) = 0.2614$

c) $(1-0.127)^7 (0.127) =0.0491$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=100, p=0.127)$