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3 years ago

I need help! Please help me on this!

Mathematics

1 answer:

LuckyWell [14K]3 years ago

8 0

i just got trolled on brainly how did this happen hffghjjkksk

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Eva took a taxi from her house to the airport. The taxi company charged a pic of feet of 3 dollars and 20 cents, plus 3 dollars

svetoff [14.1K]

Answer:

3x + 3.20 =33.20

Step-by-step explanation:

4 0

3 years ago

Find the inverse of the function.<br> y = x2 + 4x + 4

Eddi Din [679]

Answer:

y = -2+ $\sqrt{x}$ and y = -2 - $\sqrt{x}$ combined, or $x = y^2 + 4y + 4$

Step-by-step explanation:

$y = x^2 + 4x + 4$

substitute y for x and x for y

$x = y^2 + 4y + 4$

this is technically the inverse but I will simplify further

x = $(y+2)^2$

± $\sqrt{x}$ = y+2

y = -2± $\sqrt{x}$

y = -2+ $\sqrt{x}$ and y = -2 - $\sqrt{x}$ combined

7 0

3 years ago

Read 2 more answers

find the outer perimeter of this figure. Round your answer to the nearest hundredth. Use 3.14 to approximate π.

umka2103 [35]

Answer:

19.42 ft.

Step-by-step explanation:

The diameter of the semicircle is 6, so 3.14 x 6 = 18.84. Since it is a semicircle, we divide that by 2 to get 9.42.

The hypotenuse of the right triangles only matter for the perimeter. 5 + 5 = 10, and 9.42 + 10 = 19.42 ft.

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3 years ago

Just carpet has eight different quality grades of carpeting. Three types are being selected for a corporate test on durability.

zhannawk [14.2K]

Answer:

When we have a set of N elements, the number of combinations of K elements (such that N ≤ K) from these N elements is:

$C(N, K) = \frac{N!}{(N - K)!*K!}$

Then if we have 8 different types of carpet, and we want to see how many different samples of 3 types we can choose, we just need to replace N by 8, and K by 3 in the above equation:

$C(8, 3) = \frac{8!}{(8 - 3)!*3!} = \frac{8!}{5!*3!} = \frac{8*7*6}{3*2} = 56$

So there are 56 different samples.

Now we can do the same, but this time we want to use 5 types of carpet, then we will have K = 5.

$C(8, 5) = \frac{8!}{(8 - 5)!*5!} = \frac{8!}{3!*5!} = 56$

Again, we have 56 different samples.

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3 years ago

A sociologist studying freshmen carried out a survey, asking, among other questions, how often students went out per week, how m

IgorC [24]

Answer:

This is called Simpson's Paradox.

Therefore the correct option is A.) Simpson's Paradox.

Step-by-step explanation:

i) This is called Simpson's Paradox.

ii) If there are trends that tend to appear in several different groups of data which apparently either disappear or tend to reverse when these data groups are combined.

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3 years ago