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2 years ago

Please help me on homework. I need help on questions A, E, H, and I...

Mathematics

2 answers:

harkovskaia [24]2 years ago

7 0

Answer:

A:2+2+2+2=2^3

E=4^3=2^6

H=5²-3²=2^4

I=3⁵÷3=3^4=1/3

alisha [4.7K]2 years ago

5 0

Answer:a, 2^3, e, 2^6 h, 2^4

Step-by-step explanation:

2x2x2=8 and 2+2+2+2=8

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Steven has a coin collection. He keeps 13 coins in a box, which is only 5% of his entire collection. What is the total number of

zhuklara [117]

Answer:

260

Step-by-step explanation:

5×20=100

So 13 × 20

because 5 percent of the collection is 13 so it is 260.

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2 years ago

A smog alert has been called in a certain area of Los Angeles County in which there are 50 industrial rms. An inspector will vis

damaskus [11]

Answer:

Part (A) The required PMF is: $P(X=x)=\frac{\binom{15}{x}\binom{50-15}{10-x}}{\binom{50}{10}}$

Part (B) $B(x;n,p)=\binom{10}{x}(0.3)^x(1-0.3)^{10-x}$

Step-by-step explanation:

Consider the provided information.

There are 50 industrial rms. An inspector will visit 10 randomly selected rms to check for violations of regulations.

Part (A)

15 of the rms are actually violating at least one regulation.

Let X is the number of firms violate at least one regulation from 10 randomly selected rms to check for violations of regulations out of 50 firms of which 15 5 of the rms are actually violating.

Therefore, $X\sim Hypergeom(n=10, M=15\ and\ N=50)$

We need to determine probability mass function.

$P(X=x)=Hyper(x; n=10, M=15, N=50)\\=\frac{\binom{15}{x}\binom{50-15}{10-x}}{\binom{50}{10}}$

Hence, the required PMF is: $P(X=x)=\frac{\binom{15}{x}\binom{50-15}{10-x}}{\binom{50}{10}}$

Part (B) If there are 500 rms in the area, of which 150 are in violation, approximate the pmf of part.

Here N=500 so find the probability of p as shown below:

$p=\frac{150}{500} =0.3$ and n=10

$B(x;n,p)=B(x;10,0.3)\\=\binom{10}{x}(0.3)^x(1-0.3)^{10-x}$

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3 years ago

In science class, students are learning about organic compounds. An acetic acid

Alexus [3.1K]

The answer is B) 4 : 16

Explanation:
RATIO FOR 1 MOLECULE OF ACETIC ACID:
2 carbon atoms : 2 oxygen atoms : 4 hydrogen atoms
Since its asking how many for 2 MOLECULES, we double the ATOMS (we multiply all by 2)
RATIO FOR 2 MOLECULES OF ACETIC ACID:
4 carbon atoms : 4 oxygen atoms : 8 hydrogen atoms
The question only asks for the ratio of carbon atoms to ALL atoms. To calculate all atoms, we add 4 + 4 + 8 = 16
So if there are 4 carbon atoms and the sum of all atoms is 16, out final ratio answer is:
B.) 4 : 16
Mark me brainliest please!!

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2 years ago

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Yakvenalex [24]

The probability is just 1/2 that the disc will result with the white side landing up.

There are two sides to the disc. If they are equally likely to happen, then the chance of either side is 1/2. It does not matter which number the flip is.

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2 years ago

What is the scale factor from small triangle to the larger triangle

Lyrx [107]

Answer:

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Step-by-step explanation:

The scale factor is the ratio of corresponding sides, larger to smaller.

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2 years ago