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goblinko [34]
3 years ago
5

3 4 5 6 what is the probability of picking the card numbered 5 percentage pls​

Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0

Answer:

25%

Step-by-step explanation:

see there's four numbers and imagine 1/4th of 100 so it's 25%

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9(2j + 7 + 5j).
Ksivusya [100]
Answer 9(7j +7) is an equivalent expression.
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At a clothing store, 3 T-shirts and 8 hats cost $ 65. The cost of 2 shirts and 2 hats is $ 30. How much does each shirt and hat
dlinn [17]

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1 shirt=$7.50 and 1 hat=$7.50

Step-by-step explanation:

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Which hill is steeper?
Stella [2.4K]

Answer:

B. A hill that rises 2 feet for every 15 feet of run.

Step-by-step explanation:

The two must have COPs. We'll narrow them down.

For A, we divide 10 by 2.

\frac{10}{2} = 5.

For B, we divide 15 by 2.

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Here we will study the function f (x) = e ^ x sin (x), where x ∈ [0, 2π]. a) Determine where the function is decreasing and incr
Semmy [17]

fff

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To find increasing and decreasing intervals we take derivative

f'(x) = e^xsin(x)+e^x(cosx)= e^x(sinx+cosx)

Now we set the derivative =0  and solve for x

e^x(sinx+cosx)=0

sinx + cosx =0

divide whole equation by cos x

\frac{sinx}{cosx} + \frac{cosx}{cosx} =0

tanx +1 =0

tanx = 1

x=\frac{3\pi }{4} and  x=\frac{7\pi}{4}

Now we pick a number between 0 to  \frac{3\pi }{4}

Lets pick  \frac{\pi }{2}

Plug it into the derivative

f'(x) =e^{\frac{\pi }{2}}(sin(\frac{\pi}{2})+cos(\frac{\pi }{2}))

= 4.810 is positive

So the graph of f(x) is increasing on the interval [0, x=\frac{3\pi }{4})

Now we pick a number between   \frac{7\pi}{4} to 2pi

Lets pick  \frac{11\pi}{6}

Plug it into the derivative

f'(x) =e^{\frac{11\pi}{6}}(sin(\frac{11\pi}{6})+cos(\frac{11\pi }{6}))

= 116 is positive

So the graph of f(x) is increasing on the interval (\frac{7\pi }{4}, 2\pi)

Increasing interval is (0,\frac{3\pi }{4}) U (\frac{7\pi }{4}, 2\pi)

Decreasing interval is (\frac{3\pi}{4}, \frac{7\pi}{4})

(b)

The graph of f(x) increases and reaches a local maximum at x=\frac{3\pi}{4}

The graph of f(x) decreases and reaches a local minimum at x=\frac{7\pi}{4}

(c)

f(0) = 0

f(2\pi)=0

f(\frac{3\pi }{4})=7.46

f(\frac{7\pi}{4})=-172.64

Here global maximum at x=\frac{3\pi}{4}

Here global minimum at x=\frac{7\pi}{4}


3 0
3 years ago
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An aluminum recycling center pays $0.08 per pound for cans. How much will Mark receive for 21.5 pounds of cans?
sammy [17]
\bf \begin{array}{ccll}
\$&\stackrel{cans}{lbs}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
0.08&1\\
x&21.5
\end{array}\implies \cfrac{0.08}{x}=\cfrac{1}{21.5}\implies \cfrac{0.08\cdot 21.5}{1}=x
3 0
3 years ago
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