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3 years ago

10

What is an equation for (0,1), (1,3), (2,9), (3,27), (4,81)

1 answer:

Gennadij [26K]3 years ago

4 0

Answer:

$y = 3^x$

Step-by-step explanation:

Each y is 3 times the last one, so it's geometric, so exponential. 3 should appear as the base.

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Why did the math teacher open a window company?

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A math teacher opened a window company because he loves seeing shapes or geometrical polygons such as rectagles, squares or quadrilaterals in general as well as triangles in his works. Of course, the math teacher is already familiar with these shapes and how to calculate the angles in between.

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3 years ago

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Please help me with this

vodka [1.7K]

Answer:

$\frac{1}{2} \times (7.5 + 2.5) \times 2.5 = 12.5$

..........................................................the answer is 12.5

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2 years ago

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There are three choices of jellybeans: lemon, strawberry, and orange. If the probability of getting a lemon is 5/10 and the prob

geniusboy [140]

Answer:

3/10 chance of getting orange

Step-by-step explanation:

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3 years ago

The average of 7 numbers is 60. The average of the first three numbers is 50, while the average of the last three is 70. What mu

Svetradugi [14.3K]

From the last two facts, we get

$\dfrac{x_1+x_2+x_3}3=50\implies\dfrac{x_1+x_2+x_3}7=\dfrac{150}7$

$\dfrac{x_5+x_6+x_7}3=70\implies\dfrac{x_5+x_6+x_7}7=30$

Then

$\dfrac{x_1+x_2+\cdots+x_6+x_7}7=60\implies\dfrac{x_4}7=60-\dfrac{150}7-30\implies\boxed{x_4=60}$

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3 years ago

Fifteen people have been exposed to a particular disease. Each one independently has a 40% chance of contracting the disease. A

valina [46]

Answer: e. .0950

Step-by-step explanation:

Let X be the number of people that can be cure from disease.

Since each people independently has a 40% chance of contracting the disease.

So , $X\sim Binomial(n=15,p=0.40)$

A hospital has the capacity to handle at most 8 cases of the disease.

Binomial distribution formula : $P(X=x)= ^nC_xp^x(1-p)^{n-x}$

Then , the probability that the hospital’s capacity will be exceeded

$P(X>8)=1-P(X\leq8)\\\\=1-0.905\ \ [\text{Using Binomial distribution table for n=15 , x=8 and p=0.4.}]$

$=0.095$

Hence, the probability that the hospital’s capacity will be exceeded is e. .0950.

Thus , the correct option is e. .0950.

8 0

3 years ago