Use the properties of the trigonometric functions to find the exact value of the following expression: tan 25º. cot 25º = Your Answer: Answer

Answer:

You line up the letters

Answer:

1:45

Step-by-step explanation:

Trickish a bit. But look at it from this angle.

Two students were given marks that when added together, gives a total of 25. 25 on the other hand, is known to be a quarter of 100.

Again, we consider that there are 2 students involved, so we can say that the hour mark is at 2. This means that we have quarter to 2. And looking up quarter to 2 on the clock gives 1:45.

The answer is therefore 1:45

Answer:

Step-by-step explanation:

The x intercepts are obtained by equating the factors to zero.

2x - 1 = 0

2x = 1

x = 1/2

2x - 5 = 0

2x = 5

x = 5/2

x = 2 1/2 or 2.5

The graph of f(x) = (2x -1)*(2x - 5) is given below. The x intercepts are labeled.

Answer:

-11 degrees Fahrenheit.

Step-by-step explanation:

the higher the negative number is, the colder it gets <D

Answer:

15

Step-by-step explanation:

this might be true, and it might not, i wont say

SOLUTION

Step 1 :

In this question, we are meant to distribute the negative number and simplify the linear expression.

Step 2 :

Given:

CONCLUSION

We can see clearly that:

The wavelength of an atom is 3.28× 10−11 m when it is travelling at its root-mean-square speed at 20 °C. Decide on the atom. Consequently, M = 2 and the gas's molar mass is 2 kgmol−1 .

Radio waves, light waves, and infrared (heat) waves are examples of electromagnetic radiation that flow through space in distinct patterns. Every wave is a specific size and shape.

calculation

urms=  \(\sqrt{\frac{3RT}{M} }\)

and

λ=h/murms

⟹urms=h/mλ⟹

 \(\sqrt{\frac{3RT}{M} }\)=h/mλ

72.2 = 148.17 / M

M = 148.17/72 ≈ 2

Consequently, M = 2 and the gas's molar mass is 2  kgmol−1. A gas with a molecular mass of 2 kgmol-1, however, does not exist.

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Answer: It's C

Step-by-step explanation:

Answer: 10

scince x is equal to -4 the equation becomes g(-4)=6- -4

Answer:

1% of 37.25=0.3725

The sum of the algebraic expressions (–2.1x + 3.7) and (5 + 4.9x) as required in the task content is; Choice C; 2.8x + 8.7.

It follows from the task content that the sum of the algebraic expression given is to be determined.

Therefore, we have;

(–2.1x + 3.7) + (5 + 4.9x)

= -2.1x + 4.9x + 3.7 + 5

= 2.8x + 8.7.

Ultimately, the sum of the given algebraic expressions is; 2.8x + 8.7.

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Answer:

ITS C

Step-by-step explanation:I JUST TOOK THE TEST AND GOT A 100

sorry caps

As a result, none of the above systems have a solution of (-5,-1).

To see which systems have a solution of (-5, -1), enter x=-5 and y=-1 into the two equations and see if they are both true at the same time.

So, let's enter the values:

A(-5) + B(-1) = C is the solution to the first equation.

To simplify: -5A - B = C

D(-5) + E(-1) = F is the solution to the second equation.

Simplifying: -5D - E = F

As a result, the equation system can be represented as:

-5A = C -5D = E = F

Now we may enter x=-5 and y=-1 into the system and see if the equations still hold true.

When A=1, B=-5, and C=20, the expression -5A - B = C should be true.When D=1, E=-5, and F=30, D - E = F should be true.

As a result, the equation system becomes:

1x - 5y = 20

1x - 5y = 30

If we attempt to solve We have a contradiction in this system since the two equations are incompatible. As a result, there is no solution to this system of equations that meets (-5,-1).

As a result, none of the above systems have a solution of (-5,-1).

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Complete question:

Suppose the following system of equations has a solution of

where A, B, C, D, E, and F are real numbers.

Ax+By=C

Dx+Ey=F

Which systems are also guaranteed to have a solution of (–5,–1)? Select all that apply.

The difference in the average rate of change of Chris' savings and Lily's savings in the period from Month 3 to Month 12 is given as follows:

A. $5.

The average rate of change of a function is given by the change in the output of the function divided by the change in the input of the function. Hence we must identify the change in the output, the change in the input, and then divide then to obtain the average rate of change.

Chris savings increased from 35 to 170 in the period from Month 3 to Month 12, hence the average rate of change is given as follows:

(170 - 35)/9 = $15.

Lily's Savings increased from 30 to 120 in the period from Month 3 to Month 12, hence the average rate of change is given as follows:

(120 - 30)/9 = $10.

Hence the difference is of:

15 - 10 = $5.

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When using interval notation a "[" represents that the number belongs to the interval and a "(" means that the number doesn't belong to the interval, it only limits it. On this case we need to find the interval where the numbers are greater or equal to -11, therefore this number belongs to the interval, and less or equal to -2, this number also belongs to the interval. They belong to the interval, because there is "or equal" on the signals. Therefore the interval can be represented as:

Answer:

b) c + 0.35c − 10

Step-by-step explanation:

Answer:

You would have to multiply $24 by 8% and then subtract from the total.

So, 24 x .8 = 19.2

24-19.2 = 4.8

$4.80 sales tax.

I hope u were helped

Answer:

Step-by-step explanation:

You would have to multiply $24 by 8% and then subtract from the total.

So, 24 x .8 = 19.2

24-19.2 = 4.8

$4.80 sales tax.

Answer:

64

Step-by-step explanation:

its 70-2-4 = 64

70-2

=68 -4

=64

It took Simon 45 minutes to finish the run.

What is distance?

Distance is the measure of how far apart two objects or locations are from each other. It is usually measured in units such as meters, kilometers, miles, or feet.

To solve this problem, we need to use the distance formula:

Distance = Rate x Time

We can break down the run into three parts: the 2 miles due west, the 1.5 miles due north, and the straight line back to the parking lot.

For the first part, Simon ran 2 miles at a rate of 8 miles per hour. Therefore, the time it took him to run this part of the trail was:

Time = Distance / Rate

Time = 2 miles / 8 miles per hour

Time = 0.25 hours

For the second part, Simon ran 1.5 miles at a rate of 8 miles per hour. Therefore, the time it took him to run this part of the trail was:

Time = Distance / Rate

Time = 1.5 miles / 8 miles per hour

Time = 0.1875 hours

To find the distance of the last part, we need to use the Pythagorean theorem to find the hypotenuse of the right triangle formed by the 2-mile and 1.5-mile legs:

c² = a² + b²

c² = 2² + 1.5²

c² = 4 + 2.25

c² = 6.25

c = sqrt(6.25)

c = 2.5 miles

So, Simon ran 2.5 miles at a rate of 8 miles per hour. Therefore, the time it took him to run this part of the trail was:

Time = Distance / Rate

Time = 2.5 miles / 8 miles per hour

Time = 0.3125 hours

Finally, we can add up the times for each part of the trail to find the total time it took Simon to finish the run:

Total Time = 0.25 hours + 0.1875 hours + 0.3125 hours

Total Time = 0.75 hours

To convert this to minutes, we can multiply by 60:

Total Time = 0.75 hours x 60 minutes/hour

Total Time = 45 minutes

Therefore, it took Simon 45 minutes to finish the run.

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Answer:

When rotating any polygon 90 degrees, each vertice/point of the polygon should be changed from (x, y) to (y, -x). Because of this, E(-7, -4) should be E'(-4, 7), F(-2, -1) should be F'(-1, 2), and G(-5, -8) should be G'(-8, 5) after the rotation.

Step-by-step explanation:

Like I explained above, when rotating a shape 90 degrees clockwise on a plane, the points change from (x, y) to (y, -x). The student changed each point from (x, y) to (-y, x), which is a 90 degree counterclockwise rotation. That is why the student is incorrect.

I hoped this helped! Sorry, I am terrible at explaining things. :)

Answer:

6.7+1.2=7.9

Step-by-step explanation:

6+1=7

0.7+0.2=0.9

so 7+0.9=7.9

so u have to break the numbers as tens and units

Answer:

B

Step-by-step explanation:

There is not enough evidence at the 0.05 level that the technique performs differently than the traditional method.

At the null hypothesis, it is tested if there is no evidence of different performance, that is, the mean is of 8.5 hours, hence:

\(H_0: \mu = 8.5\)

At the alternative hypothesis, it is tested if there is evidence of different performance, with a mean different of 8.5 hours, hence:

\(H_1: \mu \neq 8.5\)

We have a two-tailed test, as we are testing if the mean is different of a value, with a significance level of 0.05, hence the critical value is of:

|z| = 1.96.

(p-value of 1 - (0.05/2)).

Hence the decision rule is given as follows:

The population standard deviation is known, hence the z-distribution is used to obtain the test statistic.

The equation is given as follows:

\(z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}\)

In which:

The parameters for this problem are given as follows:

\(\overline{x} = 8.8, \mu = 8.5, \sigma = \sqrt{1.21} = 1.1, n = 21\)

Hence the test statistic is of:

\(z = \frac{8.8 - 8.5}{\frac{1.1}{\sqrt{21}}\)

z = 1.24.

|z| < 1.96, hence there is not enough evidence at the 0.05 level that the technique performs differently than the traditional method.

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Answer:

46

Step-by-step explanation:

Answer:

46

Step-by-step explanation:

First get x

x= (20/10) * 100

x=200

23% of 200 = (23*200)/100 = 46

Answer:

B

Step-by-step explanation:

Did on freckle

Answer:

To find out how many gallons of paint are needed to cover the walls, we need to first find the total area of the walls.

The four walls are rectangles with a length of 20 feet and a height of 12 feet. So, the area of one wall is:

20 feet x 12 feet = 240 square feet

Since there are four walls, the total area of the walls is:

4 x 240 square feet = 960 square feet

We know that one gallon of paint can cover approximately 320 square feet. To find how many gallons of paint are needed, we can divide the total area of the walls by the area covered by one gallon of paint:

960 square feet ÷ 320 square feet per gallon = 3 gallons of paint

Therefore, you need approximately 3 gallons of paint to cover the walls.

The correct inequality that represents the given graph is "x greater-than-or-equal-to negative 53."

The inequality represented by the given graph is "x greater-than-or-equal-to negative 53."

In the graph, there is a closed circle at negative 53 on the number line. This indicates that the value -53 is included in the solution set. Additionally, everything to the right of the closed circle is shaded, indicating that all values greater than -53 are also part of the solution.

The symbol ">" represents "greater than," and the symbol "≥" represents "greater than or equal to."

Since the closed circle is at -53, which is included in the shaded region, we use the "greater than or equal to" symbol to indicate that the values greater than or equal to -53 satisfy the inequality.

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Answer:

its d

Step-by-step explanation:

Answer:

So the horizontal distance from the base of the skyscraper out to the ship is approximately 872.4 feet.

Step-by-step explanation:

We are given that the angle of depression is 48 degrees and that the height of the observation deck is 969 feet. Let's call the distance from the base of the skyscraper out to the ship "d".

We can use the tangent function to relate the angle of depression to the horizontal distance:
tan(48) = x / d

Multiplying both sides by d, we get:

d * tan(48) = x

Now we just need to plug in the values we know:
d * tan(48) = x

d * 1.1106 = x

Rounding to the nearest tenth, we get:
d = x / tan(48) ≈ 872.4 feet