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2 years ago

Find sin 2x,cos2x and tan2x,if tanx=-(3)/(4)and x terminates in quadrant IV

Mathematics

1 answer:

Montano1993 [528]2 years ago

7 0

Answer:PLEASE HELP ME

Step-by-step explanation:

here can you guys please help me with this question.

I have been asking help from so many people but no one is nice enough to give it so im hoping that anyone over here can help me. this is the problem

Carl is standing at the base of a zip line which is 400 ft away from the base of the building that is connected to the top of a building. Standing 5.5 ft tall, he looks up to the top of the building at an angle of elevation of 25 degrees. A weight is released and travels down the zip line to his feet. How far did the weight travel? Round to nearest 10th of a foot and do not use units in your answer.

Please show work

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Convert 19/20 to a percent.

liraira [26]

95% is the answer you're looking for

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3 years ago

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Whats the volume of the pyramid shown

adell [148]

Answer:

Volume of the Pyramid = 40 cubic centimeters

Step-by-step explanation:

The volume of a pyramid is given by the formula:

$V=\frac{lwh}{3}$

Where

l is the length

w is the width

h is the height

In the figure shown, the length is 5, width is 4, and height is 6 (in cm). We just substitute and find the answer. Shown below:

$V=\frac{lwh}{3}\\V=\frac{5*4*6}{3}\\V=40$

So, we can say:

Volume of the Pyramid = 40 cubic centimeters

7 0

3 years ago

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

tangare [24]

Answer:

<h3>The given expression can be written in the form $q(x)+\frac{r(x)}{b(x)}$ as $(2x^2-x+3)+\frac{0}{x-3}$ where q(x)= $2x^2-x+3$ , r(x)=0 and b(x)=x-3</h3>

Step-by-step explanation:

Given rational expression is $\frac{2x^3-7x^2+6x-9}{x-3}$

<h3>To rewrite the given rational expression in the given form and match their correct expressions:</h3>

Rewrite the given rational expression $\frac{2x^3-7x^2+6x-9}{x-3}$ in the form of $q(x)+\frac{r(x)}{b(x)}$ where q(x) is the quotient, r(x) is the remainder and b(x) is the divisor.

<h3>Now solve the given expression by using Synthetic division, we get</h3>

Since x-3 is a factor for $2x^3-7x^2+6x-9$

<h3>Therefore b(x)=x-3</h3>

3_| 2 -7 6 -9

0 6 -3 9

------------------------------------

2 -1 3 0

------------------------------------

Therefore we have quadratic equation $2x^2-x+3=0$

<h3>q(x)= $2x^2-x+3$ </h3><h3>Remainder is 0</h3><h3>Therefore r(x)=0</h3>

Therefore we can write in the form as $(2x^2-x+3)+\frac{0}{x-3}$

It is in the form of $q(x)+\frac{r(x)}{b(x)}$

<h3>Therefore the given expression can be written in the form $q(x)+\frac{r(x)}{b(x)}$ as $(2x^2-x+3)+\frac{0}{x-3}$ where q(x)= $2x^2-x+3$ , r(x)=0 and b(x)=x-3</h3>

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3 years ago

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Please help with this:)

lubasha [3.4K]

The area is pie times radius squared this means 4 squared times pie so 16 times pie and then that’s your answer

8 0

3 years ago

Find the possible ones place digit in the square root of the following (apply the properties) a) 2039184

maxonik [38]

Answer:

The answer is given below

Step-by-step explanation:

1) Find the possible ones place digit in the square root of the following

a) 2039184

The number 2039184 ends with 4, therefore the square root of the number can either end in 2 or 8

2² = 4, √4 = 2

8² = 64, √64 = 8

b) 10,004,569

The number 10,004,569 ends with 9, therefore the square root is the number will end in 3

3² = 9, √9 = 3

2) How many natural numbers lie between the squares of 41 and 42

42² = 1764 and 41² = 1681

Therefore the numbers that lie between 1764 and 1681 = (1764 - 1681) - 1 = 83 - 1 = 82

3) What will be the value of ‘ x’ in Pythagorean triplet (41, 9, x)

Pythagorean consist of three positive numbers a, b, c such that a² + b² = c². Therefore: x² + 9² = 41²

x² = 41² - 9² = 1681 - 81

x² = 1600

x = √1600 = 40

4) Check whether 15028 is a perfect square

15028 = 2 × 2 × 13 × 17 × 17

15028 = 2² × 13 × 17²

It is not a perfect square. If it is divided by 13 it becomes a perfect square, that is:

15028/13 = 2² × 17²

15028/13 = (2 × 17)² = 34²

34² = 15028/13

34² = 1156

The square root of the new number formed is 34 (i.e √1156)

5) A gardener has 5190 plants. He wants to plant in such a way that the number of rows and columns remains the same.

let the number if rows be x. Since the rows and columns are the same, the number of columns = x.

x² = 5190

x = √5190 = 72² + 6.

Therefore at least six plant would be left out

7 0

3 years ago