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2 years ago

12

Use the compound angle formulae to find the following in surd form: tan 225°

1 answer:

andreyandreev [35.5K]2 years ago

8 0

Answer:

On the trig unit circle,

tan 225 = tan (45 + 180) = tan 45 = 1

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What is the Domain and Range *DON'T FORGET PARENTHESES AND BRACKETS*

Anastasy [175]

Answer:

Domain: (-5,-4,-3,-2,-1,0,1,2,3,4,5)

Range: (0,1,2,3,4, -1, -2)

Step-by-step explanation:

Domain means all of the x-axis values on the graph, so for example in (-2,0), -2 would be part of the domain and 0 part of the range. Therefor, what you would do would be take all of the plots and put all x values as the domain and all y values as the range. Hope this helped!

4 0

3 years ago

Find the midpoint between two points on a number line if one of the points is at -7, and the other point is at 12.

weqwewe [10]

Answer:

The middle point is 3

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A shipping container in the shape of a rectangular solid must have a volume of 84 cubic meters. The client tells the manufacture

Zolol [24]

Answer:

The Length , width and height of solid are 4 feet , 3 feet and 7 feet respectively.

Step-by-step explanation:

Let the width of rectangular solid be x

We are given that the length of the container must be one meter longer than the width

So, Length of solid = x+1

We are also given that height must be one meter greater than twice the width

So, Height of solid = 2x+1

So, Volume of solid = $Length \times Width \times height$

Volume of solid = $(x+1) \times x \times (2x+1)$

Volume of solid = $(x^2+x)(2x+1)$

Volume of solid = $2x^3+x^2+2x^2+x=2x^3+3x^2+x$

We are given that a rectangular solid must have a volume of 84 cubic meters

So, $2x^3+3x^2+x=84\\2x^3+3x^2+x-84=0\\(x-3)(2x^2+9x-28)=0\\$

On equating

x-3=0

x=3

So, Length of solid = x+1=3+1 = 4 feet

Height of solid = 2x+1 =2(3)+1=7 feet

Width of solid = 3 feet

Hence The Length , width and height of solid are 4 feet , 3 feet and 7 feet respectively.

8 0

2 years ago

8×(14+7)=______+(8×7)<br> complete the equation, and tell which property you used

KiRa [710]

8 x (14 + 7) = (8 x 14) + (8 x 7)--- distributive property

3 0

3 years ago

Can u pls help me with this question

ladessa [460]

Answer:

$-k^2+7k$

Step-by-step explanation:

Using the given equations, we must find $C-B$

Start by substituting the given values into the expression:

$C-B\\k-3-(k^2-6k-3)$

Now, take the terms out of the parentheses.

$k-3-(k^2)-(-6k)-(-3)\\k-3-k^2+6k+3$

<u>Please note that two negatives make a positive</u>

<u />

<u /> $k-3-k^2+6k+3$

Combine like terms:

$-k^2+7k$

4 0

2 years ago