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2 years ago

4x-y=20 find the X and Y intercepts from the equation

Mathematics

1 answer:

GalinKa [24]2 years ago

7 0

Answer:

its c

Step-by-step explanation:

i took it

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According to the "January theory," if the stock market is up for the month of January, it will be up for the year. If it is down

PSYCHO15rus [73]

Answer:

The required probability is 0.031918.

Step-by-step explanation:

Consider the provided information.

It is given that According to an article in The Wall Street Journal, this theory held for 22 out of the last 34 years.

Therefore n=34

The probability it is either up or down is 0.5.

Thus the value of p =0.5 and q = 0.5

Now calculate the probability

Let X is the number of years that theory held.

X has a binomial distribution with n=34 and p=0.5

$P(X=22)=\binom{34}{22}(0.5)^{22}(0.5)^{12}\\P(X=22)=\frac{34!}{22!\times 12!}(0.5)^{22}(0.5)^{12}\\P(X=22)=548354040\times 5.8207660913\times 10^{11}\\P(X=22)=0.0319184060208\\P(X=22)\approx0.031918$

Hence, the required probability is 0.031918.

8 0

3 years ago

Probe that:<br><img src="https://tex.z-dn.net/?f=%20%5Csec%20%5Calpha%20%20%5Csqrt%7B1%20-%20%20%5Csin%28%20%7B%7D%5E%7B2%7D%20%

Nataly [62]

Step-by-step explanation:

<h3> $\sec \alpha \sqrt{1 - \sin ^{2} \alpha } = 1$ </h3>

Prove the LHS

Using trigonometric identities

That's

<h3> $\cos ^{2} \alpha = 1 - \sin^{2} \alpha$ </h3>

<u>Rewrite the expression</u>

We have

<h3> $\sec \alpha \sqrt{ \cos^{2} \alpha }$ </h3>

<h3> $\sqrt{ { \cos }^{2} \alpha } = \cos \alpha$ </h3>

So we have

<h3> $\sec \alpha \times \cos \alpha$ </h3>

Using trigonometric identities

<h3> $\sec \alpha = \frac{1}{ \cos \alpha }$ </h3>

<u>Rewrite the expression</u>

That's

<h3> $\frac{1}{\cos \alpha } \times \cos \alpha$ </h3>

Reduce the expression with cos a

We have the final answer as

As proven

Hope this helps you

7 0

2 years ago

The following set of numbers is going to be graphed on a histogram. If there are going to be four intervals, what will the lengt

Alina [70]

The length of each interval would be 3.75 rounding to whole number is 4.

Step-by-step explanation:

Stack in excel from lowest to highest points.
Total number of data points are 14.
Frequency distribution to be created.
You can use countif function for frequency distribution.
Since we have already got the number of intervals.
It will be easier to calculate the number if intervals.
normally there should be 5-15 intervals to get a better histogram.
Basic formula is Highest data point - Lowest data point/ classes/intervals.
So (29-14)/4 = 3.75 rounding to 4.

8 0

3 years ago

Team tool Bella canoed 15 3/4 miles in 5 1/4 hours

andriy [413]

Answer:

Step-by-step explanation:

What's the question?

3 0

3 years ago

Plzzzz helpppppppppp;(

Andrews [41]

Answer:100

Step-by-step explanation:

This is because 2 is diagonal of 5 and they are on a graph therefore being equivalent to each other let me know if this helps

4 0

2 years ago