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3 years ago

Helppppppppppppp ASAP

Mathematics

2 answers:

zvonat [6]3 years ago

8 0

Option c because I took the test

Ivan3 years ago

6 0

The formula for N choose K is given as:

C(n, k)= $\frac{n!}{[k!(n-k)!] }$

Where,

n is the total numbers.

k is the number of the selected item.

Options C is correct.

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Find two consecutive positive integers such that the sum of their squares is 421

alexandr402 [8]

14 and 15
14^2 = 196
15^2 = 225
225+196 = 421

6 0

3 years ago

Jane’s cell phone plan is $40 each month plus $0.15 per minute for each minute over 200 minutes of call time. Janes cell phone b

san4es73 [151]

Answer:

The equation is $40+0.15m = 58.00$ whose solution is $m =120\:minutes.$

Step-by-step explanation:

Let us call $m$ the number of minutes the phone is used over 200 minutes, then we have

$\boxed{40+0.15m = 58.00}$ <em>(this says monthly bill of $40 plus the cost of phone usage over 200 minutes must equal $58 )</em>

This equation can be used to solve for $m$ u as follows:

$0.15m = 58-40$

$m = \dfrac{18}{0.15}$

$\boxed{m = 120\:minutes}$

8 0

3 years ago

Find the derivative of <br> |x|/(x-1)

ki77a [65]

$\bf \cfrac{|x|}{x-1}\iff \cfrac{\sqrt{x^2}}{x-1}\iff \cfrac{(x^2)^{\frac{1}{2}}}{x-1}
\\\\\\
\textit{using the quotient rule}
\\\\\\
\cfrac{dy}{dx}=\cfrac{\frac{1}{2}(x^2)^{-\frac{1}{2}}\cdot 2x(x-1)-(x^2)^{\frac{1}{2}}\cdot 1}{(x-1)^2}$

$\bf \cfrac{dy}{dx}=\cfrac{\frac{x(x-1)-(x^2)^{\frac{1}{2}}}{(x^2)^{\frac{1}{2}}}}{(x-1)^2}\implies \cfrac{dy}{dx}=\cfrac{x(x-1)-(x^2)^{\frac{1}{2}}}{(x^2)^{\frac{1}{2}}(x-1)^2}
\\\\\\\cfrac{dy}{dx}=\cfrac{x(x-1)-|x|}{|x|(x-1)^2}$

4 0

3 years ago

If Quinn tosses a fair coin and then rolls a fair number cube labeled 1 through 6, what is the probability of tossing heads foll

marishachu [46]

(1/2)(3/6)=1/4

The probability of rolling a head (or tail for that matter is 1/2)

The probability of rolling less than 4 with a die is 3/6)

Thus the probability of both occurring is 1/4

5 0

3 years ago

Read 2 more answers

Any help? appreciate any answers for this

Llana [10]

Answer:

96cm^2

Step-by-step explanation:

Each cube had 3 faces of 6 showing.

24 / 2 = 12

there are 8 cubes

8 x 12 = 96

6 0

3 years ago