All categories

3 years ago

HELP!!!!!!!!!!!!!!!!!! Please see attachment

Mathematics

2 answers:

kati45 [8]3 years ago

8 0

The last one because of you add them you get 180.180 is a straight line

marshall27 [118]3 years ago

8 0

The 3rd one because x is vertical to the angel above and if you add all 3 you should get 180

You might be interested in

Check whether the system of equations is consistent or inconsistent 7/2x-2/3y+9=0; 2x-3y-8=0

laiz [17]

Answer:

hi,

Step-by-step explanation:

A consistent system of equations has at least one solution, and an inconsistent system has no solution.

Here the system has one solution.

4 0

2 years ago

Given: cosθ= -4/5 , sin x = -12/13 , θ is in the third quadrant, and x is in the fourth quadrant; evaluate tan 1/2 θ

mrs_skeptik [129]

Answer:

Step-by-step explanation:

If you're looking for what the half angle of the tangent of theta is, I'm a bit confused as to why you think the angle in the 4th quadrant, x, is relevant. But maybe you don't know it isn't and it's a "trick" to throw you off. Hmm...

Anyways, the half angle identity for tangent is

$tan(\frac{\theta}{2})=\frac{sin\theta}{1+cos\theta}$

There are actually 3 identities for the tangent of a half angle, but this one works just as well as either of the others do, so I'm going with this one.

If theta is in QIII, the value of -4 goes along the x axis and the hypotenuse is 5. That makes the missing side, by Pythagorean's Theorem, -3. Filling in our formula:

$tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{1+(-\frac{4}{5}) }$ which simplifies a bit to

$tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{5}{5} -\frac{4}{5} }$ and a bit more to

$tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{1}{5} }$

Bring up the lower fraction and flip it to divide to get

$tan(\frac{\theta}{2})=-\frac{3}{5}*\frac{5}{1}$ which of course simplifies to

-3. Choice A.

6 0

3 years ago

W + 7/w - 2 = w + 7/w-1 + 1

Reptile [31]

Answer:

Step-by-step explanation:

sbsjbjbdcjbjbdyiy

3 0

3 years ago

Read 2 more answers

What is the change in total cost for each book printed?

Yuki888 [10]

Since y is cost and x are books, you plug in the numbers that each question implies:

First, What is the change in the total cost for each book printed?

Well, we know the equation is linear, so the cost should be the same with each book. Let's plug in 2 numbers, and see how the cost changes:

for 1 book (x = 1)

1150+25(1)= 1175

For 2 books (x - 2)

1150+25(2) = 1200

Next, to find the change in total cost, subtract these 2 answers:

1200 - 1175 = 25

$25.00 is the change in total cost. Notice that this number is also the slope of this linear equation (the term in front of the x.

For the next question: What is the cost to get started ( before any books are printed )?

Well, for that, we set x = 0 since there are no books:

1150+25(0)= 1150

$1150.00 is the startup cost

i gotchu son

8 0

3 years ago

Simplify expression -6-2(3x+8)

KIM [24]

Answer:

-6x-22

Step-by-step explanation:

-6 -2 (3x + 8)

Distribute the 2.

-6 -6x -16

Rewrite the expression.

-6x -6 - 16

Subtract -6 from 16.

The answer is -6x-22

5 0

3 years ago