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3 years ago

Need Help....

Mathematics

2 answers:

natali 33 [55]3 years ago

5 0

Answer:

$the \: expession \: is \: equivalent \: to \: 2$

$to \: know \: the \: solution \: with \: explanation$

$refer \: to \: the \: above \: attatchment$

<h3>Carry on learning !! </h3>

Alecsey [184]3 years ago

3 0

If 0 < x < π/2, then both sin(x) and cos(x) are positive.

From the Pythagorean identity, we then have

cos²(x) + sin²(x) = 1

⇒ cos(x) = + √(1 - sin²(x)) and sin(x) = + √(1 - cos²(x))

Then

√(1 - cos²(x))/sin(x) = sin(x)/sin(x) = 1

and

√(1 - sin²(x))/cos(x) = cos(x)/cos(x) = 1

so that the overall expression reduces to

1 - 1 = 0

You might be interested in

What is the sum of 1 and opposite of 12

likoan [24]

The opposite of 12 is -12 . To add negative<span> numbers to </span>positive<span> numbers count backwards, as if you were subtracting. We have the problem: 1+ (-12). This can be read as “one </span>plus negative<span> twelve.” This can also be read as 12-1 which is 11 so the answer is 11.</span>

5 0

4 years ago

If each value of the data of the poplation function is doubled which of the following is not correct?

Anna35 [415]

Answer:

The variance is doubled; C

Step-by-step explanation:

Here, we want to select what will be wrong if every number in the dataset is doubled

A. This is correct

The mean is the average of the numbers which is calculated by dividing the sum of the numbers by the count of the numbers

By doubling the numbers, we have simply doubled the sum while the count is same

So what we have as the result of the division will be 2 times what we had initially making the mean doubled

B. The mode is doubled

Yes, this is correct

The mode is the highest in frequency

Doubling all numbers will not double their frequencies but their values. So the number that was the mode in the previous case will be the same but now doubled

D. The median is doubled

This is correct

The median deals with the middle number.

Since all numbers are doubled in the present case, the median to is also doubled along side as the numbers are now twice what they were evenly

C. This is wrong

The variance has to do with the spread of data

We are actually subtracting values

Since we are doubling across board, the difference between the numbers is the same as this, the variance cannot change

We can look at this from the angle that all others are measures of central tendency looking at having a central figure while the variance is a measure of spread.

3 0

3 years ago

Slope of points (2,2) and (-2,-2)

nika2105 [10]

SLope = (2 + 2)/(2 + 2) = 4/4 = 1

Answer

8 0

3 years ago

Which expressions can be used to compute the approximate area of triangle XYZ? Check all that apply.

lesantik [10]

Given:

In the given ΔXYZ,

Base = 22

Height = 23.1

Also,

Base = 31.9

Height = 15.9

To find the area of the given ΔXYZ.

Formula

The area of a triangle is

$A = \frac{1}{2} bh$

where, b be the base and

h be the height.

Now,

Taking, b = 22 and h = 23.1 we get,

$A = \frac{1}{2} (22)(23.1)$ sq unit

Again,

Taking,

b = 31.9 and h = 15.9 we get,

$A = \frac{1}{2} (31.9)(15.9)$ sq unit

Therefore,

We can find the approximate area of the triangle by following two expression

a) $\frac{1}{2} (22)(23.1)$ and

b) $\frac{1}{2} (31.9)(15.9)$

8 0

3 years ago

Read 2 more answers

A radio station has $400 to give away for a contest. It gives away a $50 prize each week. The equation y = 400 – 50x represents

Vlad1618 [11]

Answer:

The y intercept, (0,400) represents the amount of money the radio station originally had. The x-intercept, (8,0), represents the amount of weeks it will take for the radio station to have $0 left.

Step-by-step explanation:

5 0

2 years ago