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3 years ago

What are the coordinates of B(-4, -5) under a 180 degree rotation about the origin?

Mathematics

1 answer:

polet [3.4K]3 years ago

5 0

Answer:

(4, 5 )

Step-by-step explanation:

Under a rotation about the origin of 180°

a point (x, y ) → (- x, - y ), thus

B(- 4, - 5 ) → (4, 5 )

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Tan y+cot y= sec y x csc y<br> prove the identity <br> (y is the variable)

adell [148]

Answer:

Step-by-step explanation:

tany+coty =

$\frac{siny}{cosy} + \frac{cosy}{siny}$ ·

$\frac{sin^{2}y + cos^{2}y }{cosysiny}$

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3 0

3 years ago

Two-thirds a number plus 4 is 7

ICE Princess25 [194]

The equation (form) is: $\frac{2}{3}x + 4 = 7$

The solution of the equation is: $x = \frac{9}{2}$

Explanation:

First, let's call the number we are going to solve for "x".

Then two thirds of this number can be written as:

$\frac{2}{3}x$

Then "plus 4" means add 4 we get:

$\frac{2}{3}x + 4$

"is 7" means that the above expression is equal to 7 (as follows):

$\frac{2}{3}x + 4 = 7$

The solution of the above equation is:

$\frac{2}{3}x + 4 = 7 \\ \frac{2}{3}x = 3 \\ x = \frac{9}{2}$

6 0

3 years ago

What is the measure of

kondaur [170]

Edit your question so we know what you are asking

8 0

3 years ago

7176 rounded to 1 significant figure

kati45 [8]

Answer:

7000

Step-by-step explanation:

8 0

3 years ago

How much material is needed to construct a triangular tent that is 10 feet wide, 12 feet tall, and 18 feet long with side measur

Ket [755]

The answer is " 768 square feet. ".

Total surface area of a triangular prism = width x height +(sum of sides + width) x length and here;
width = 10
height = 12
sides = 13
length = 18
= (10 x 12) + (13 + 13 + 10) x 18
= 120 + (36 x 18)
= 120 + 648
= 768 square feet.

3 0

3 years ago