For an angle theta with the point (-5, -12) on its terminating side, what is the value of cosine? A. -5
B. -12
C. -5/13
D. -12/13

Answers

Answer 1

Answer: -5 is the adjacent side, -12 is the opposite side, the hypotenuse is 13
Cos = adjacent/hypotenuse
Cos = -5/13
The answer is C.

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9h + 2 19. Given the formula E = IR what is the formula for R?
a. R = I ÷ E
b. R = EI
c. R = IE
d. R = E ÷ I

Answers

E= I x R divide I from both sides
E/I = R or R = E/I which is D in the answer selection.

Your answer is D. I hope this helps

What is the value of k?

Answers

Answer:

Step-by-step explanation:

recall that the inside angles of a triangle add up to 180°

and also that the angle 115° is the other part of a 180° total

180=115+y

180-115 =65

then the inside angle at Y is 65°

add the three inside (interior of the triangle) angles up

180= 65 + (4k+5) + (6k+10)

180 = 65 + 10k + 15

180 = 80 + 10k

100 = 10k

10 = k

see how I did that?

Which of the following relations is a function? {(-6, 4), (-6, 2), (2, 9), (1, 4)}

{(8, 2), (9, -2), (7, 0), (-3, 6)}

{(1, 2), (4, -1), (1, 2), (-3, 4)}

{(8, -2), (-4, 3), (8, 4), (-2, 3)}

Answers

The formal definition of a function states that: "A function relates each element of a set with exactly one element of another set (possibly the same set)."

The part "..with exactly one element.." means that for every input (x-coordinate), it cannot give back 2 or more return values (y-coordinates). With that rule alone, we can look at the different groups of coordinate points, and find which of the groups don't have repeating x-coordinates.

Let us look at each group:
{(-6, 4), (-6, 2), (2, 9), (1, 4)} contains 2 pairs with the -6 x-coordinate, so this is not a function.

{(1, 2), (4, -1), (1, 2), (-3, 4)} contains 2 pairs with the 1 x-coordinate so this is not a function.

{(8, -2), (-4, 3), (8, 4), (-2, 3)} contains 2 pairs with the 8 x-coordinate so this is not a function.

{(8, 2), (9, -2), (7, 0), (-3, 6)} does not have any repeating x-coordinates, so this relation is a function.

If r = 8 units and h = 10 units, what is the volume of the cylinder shown above? Use 3.14 for .

Answers

The formula of the volume of a cylinder:

$V=\pi r^2H$

We have:
r =8 u. ; H = 10 u.

substitute:

$V=\pi\cdot8^2\cdot10=\pi\cdot64\cdot10=640\pi\ u^3\approx640\cdot3.14=2009.6\ u^3$

What is 1 1/2 minus 1/4

Answers

An 1 1/2 minus 1/4 is equal to 1 1/4 or 1.25 as a decimal.

To subtract fractions, they must have a common denominator the common denominator is 4. Let's find the equivalent fractions with a denominator of 4:

1 1/2 is the same as 1 + 1/2, and convert 1/2 to have a denominator of 4:

1 + 1/2 = 1 + 2/4

Now, subtract 1/4:

(1 + 2/4) - 1/4 = 1 + (2/4 - 1/4) = 1 + 1/4

To know more about decimal here

brainly.com/question/33109985

#SPJ6

1 1/2 - 1/4
You have to have a common denominator which is 4 in this istance.
That makes it 1 2/4 - 1/4. That equals 1 3/4.

Hope that this helped! :)

A basketball player made 40% of the shots she attempted. If she made 32 baskets, how many shots did she attemp A.32 B.40 C.64 D. 80