What is the exact value of cos(c + d), given sinc =24/25 for c in Quadrant II and cos d =-3/4 for d in Quadrant III?

-47/100

-1 3/100

21-24squareroot7/100
21
=24squareroot7/100

Answers

Answer 1
D.    [tex]\frac{21 + 24\sqrt{7} }{100}[/tex]


Related Questions

If the terminal point determined by t is (-5,-4), then
\sin (t) =
;
\cos (t) =
;
\tan (t) =
.

Answers

Answer:

The trigonometric ratios associated with (-5, -4) are [tex]\sin t \approx -0.625[/tex], [tex]\cos t \approx -0.781[/tex] and [tex]\tan t = 0.8[/tex].

Step-by-step explanation:

Let [tex]\vec u = (x,y)[/tex]. From Trigonometry, we remember the following definitions for the trigonometric ratios, dimensionless:

[tex]\sin t = \frac{y}{\sqrt{x^{2}+y^{2}}}[/tex] (1)

[tex]\cos t = \frac{x}{\sqrt{x^{2}+y^{2}}}[/tex] (2)

[tex]\tan t = \frac{y}{x}[/tex] (3)

If we know that [tex]x = -5[/tex] and [tex]y = -4[/tex], then the trigonometric ratios are, respectively:

[tex]\sin t = \frac{-4}{\sqrt{(-5)^{2}+(-4)^{2}}}[/tex]

[tex]\sin t \approx -0.625[/tex]

[tex]\cos t = \frac{-5}{\sqrt{(-5)^{2}+(-4)^{2}}}[/tex]

[tex]\cos t \approx -0.781[/tex]

[tex]\tan t = \frac{-4}{-5}[/tex]

[tex]\tan t = 0.8[/tex]

The trigonometric ratios associated with (-5, -4) are [tex]\sin t \approx -0.625[/tex], [tex]\cos t \approx -0.781[/tex] and [tex]\tan t = 0.8[/tex].

7*6+12+5=?? i will mark as brainliest

Answers

59 pls mark branliest

Answer:

[tex]59[/tex]

Step-by-step explanation:

[tex]--------------------------------------------[/tex]

[tex]7\cdot6+12+5[/tex] = [tex]?[/tex]

[tex]42+12+5[/tex] = [tex]?[/tex]

[tex]54+5[/tex] = [tex]?[/tex]

[tex]59[/tex]

[tex]--------------------------------------------[/tex]

Hope this helps! <3

[tex]--------------------------------------------[/tex]

良い日をお過ごしください!:D

[tex]--------------------------------------------[/tex]

Martha works at a small jewelry store. She designed 2 rings in the furst hour. Every additional hour, she designs 3 new rings.

Answers

So should be it is 53

An item cost $420 before tax, and the sales tax is $33.60. Find the sales tax

Answers

Answer:

8%

Step-by-step explanation:

used a calculator

WILL GIVE BRAINLYEST AND WORTH 25 PTS

Select all the correct lines that represent functions.​

Answers

1-4 2-5 3-7 this should be it

Answer:

The swiggle is not a funtion

the straight line is

the mouth shape thing is not

the circle is not

the parabula or u-shaped thing is

Step-by-step explanation:

Jfifickxjcicixkskekeidixixjx

Answers

Wjdhiqhdydhhwjebfksomern
Enchiladas

Can someone help meh on this question?

Answers

the answer is b. she took too much money out of her account (overdrew) & that’s why her balance is negative
The answer is B because it is negative

MATH 123 at the downtown Indianapolis campus has approximately 580 students enrolled. In Lawrence, MATH 123 has a total of 340 students enrolled. Find the relative change of BOTH scenarios and complete the each sentence below. The downtown Indianapolis campus has % more students enrolled than at the Lawrence campus. % less The MATH 123 enrollment numbers for Lawrence are than those enrolled at the downtown Indianapolis campus.​

Answers

Answer:

The downtown Indianapolis campus has 71% more students enrolled

The math 123 enrollment for Lawrence are 41% less than those enrolled downtown.

Step-by-step explanation:

An inference _______.
a. is a possible explanation for events using prior knowledge
b. explains if a hypothesis is or is not valid
c. is made independent of observation or prior knowledge
d. can be either qualitative or quantitative

Answers

Answer:

It is a possible explanation of events using prior knowledge

Step-by-step explanation:

What is the surface area of the pyramid 6 inches height 8 inches length 8 inches width

Answers

Answer:

384

Step-by-step explanation:

Formula:Length x Width x Hight

6x8=48 48x8=384

Have a good day!

You’re playing tug-of-war in gym class at the start you take two steps back the other team pulls you and takes three steps forward which equation can be used to find how far you are from your original position?

A: -3+2
B: -2+(-3)
C: -2+3
D: 2+3

Answers

I would think it’s C

What is the slope to y = 2x + 4

Answers

Answer:

2

Step-by-step explanation:

the number right next to the x is the slope, if there is no number, then the slope is 1

your equation in a y = mx + b format"

y is the outputm is the slopex is the inputb is the y intercept

. The ratio of a model car to the real car is 2:55. If the real car is 165 inches
long from front to back, use a proportion to determine the length of the model
car.

Answers

Answer:

6

Step-by-step explanation:

Order the numbers from least to greatest. 0.12, 10%, 340, 0.08

Answers

Answer:

Step-by-step explanation:

Answer:

0.08, %10, 0.12 and 340

Step-by-step explanation:

Help please
The answer choices are
A) x=3/x
B)x=9/x
C)0=3/x+x
D)0=9/x+x

Answers

Answer:

A

Step-by-step explanation:

can you please help me with this question ​

Answers

Answer:

tbh im dumb so

Step-by-step explanation:

SOLVE, GRAPH AND CHECK:
6(4- x) < 12

Answers

Answer:

The answer is : x > 2

is 20:14 and 80:56 ratios are equivalent

Answers

Answer:

yes

Step-by-step explanation:

80 ÷ 20 = 4

56 ÷ 14 = 4

yes they are equivalent

5x - 20y = 2 in
slope intercept form

Answers

Answer:

-20+5x=2.

Step-by-step explanation:

..............

You are renting a house in the Seychelles for a week at $1700. What is the cost per day?

(Show your answer in dollars and cents: For example $300 is entered as 300.00)

Answers

Answer:

your paying for each day 56.66

Sally is working on a new recipe for her party. She needs to get 3.5 pounds of strawberries, 1 quart of milk, and 1 box of sugar cookies. The prices below list how much items will cost Sally at the grocery store.

Strawberries $1.68 per pound
Quart of milk $2.38 each
Box of sugar cookies $1.99 each

Part A:
How much will 3.5 pounds of strawberries cost?

Part B:
What will Sally's total grocery bill be?

I REALLY NEED HELP PLEASE STAT

Answers

Answer: Part A. 5.88

Part B. 10.25

Step-by-step explanation:

Brainliest please ^^

5.88 part a
Hope this helps
10.18 part b

2 points
Ms. Brown bought a bag of bubble gum. 15 were green, 13 were yellow, 4
were white, 10 were blue, and 8 were red. What percentage of the gum is
green? *

Answers

Answer:

30 percent

Step-by-step explanation:

15 + 13 + 4 + 10 + 8 = 50

15/50 = 30/100

PLEASE HELP!!
finding square roots of negative numbers

show your work

1-) V-18

2-) 2V-16

Answers

Answer:

Work shown below!

Step-by-step explanation:

[tex]\sqrt{-18}=\sqrt{18i^{2} } =\sqrt{2*9i^{2} }=3i\sqrt{2}[/tex]

[tex]2\sqrt{-16} =2\sqrt{16i^{2} } =4i*2=8i[/tex]

If 14 g of a radioactive substance are present initially and 2 yr later only 7 g​ remain, how much of the substance will be present after 5
​yr?

Answers

Answer:

2.47g

Step-by-step explanation:

Given that Ao=14

A(t)= Aoe^kt

k =2yrs

Considering the function where Ao is the initial substance, k is the rate of decay and t is the time.

At the 2nd year A(t) is 7

That is,

7 = 14e^2k

Solve for k

7/14 = e^2k

In(7/14) = 2k

k = In(7/14)÷2

k = In(0.5)/2

k = -0.34657

Hence, A(t)= 14e^-0.34657

So, when t is 5

A(5) = 14e^-0.34657×5

= 2.4749

Approx = 2.47g

HELP MEEEEEEE PLZZZZZZZZZ 1 hundo

Answers

Answer:

x=6

Step-by-step explanation:

16*8=128

176-128=48

8*x should equal 48

8*6 makes 48 so x=6 makes this true

(answered 20. tell me if I need to answer both)

Jillian and Dawn are playing a game of miniature golf. In this game, the score on a hole is the number of putts it takes to
get the ball into the hole. The winner is the player with the lowest score. After playing 18 holes, Jillian's mean is 2.4 and
Dawn's mean is 3.3. Which explains who won the game?
O Jillian won the game because her score varied less than Dawn's score.
O Jillian won the game because the person with the lower mean took fewer putts on average for each hole.
O Dawn won the game because the person with the greater mean played better.
O Dawn won the game because her mean absolute deviation was less than Jillian's.
Next
Submit
Save and Exit
Mark this and return

Answers

Answer: B

Step-by-step explanation:

Laura bought apples to send to her friend Brad by mail. Because of mailing restrictions, the total mass of the apples cannot exceed 23 pounds. If the mass of each apple is 5 ounces, what is the maximum number of apples Laura can send?



A.72
B.73
C.74
D.75​

Answers

Answer:

D. 75 bc it should be that

Answer:

B 73

so I had  four answer choices A 72 B 73 C 74 D 75 Someone had put that the answer was D . But,  I had this same problem on  my test I picked D and got it wrong. so clearly its not D. theses are medium apple's 1lb is 16oz I apple is 5oz 23lbs = 368oz 3 apples =15oz

take 368 and divided it by 5 you get 73.6

3 fair coins are tossed.
a) What is the probability of getting all 3 heads? (My Answer is 1/8)
b) What is the probability of getting all 3 tails? (My Answer is 1/8)
c) What is the probability of getting all 1 head and 2 tails? (My Answer is 3/8)
d) What is the probability of getting all 2 heads and 1 tail? (My Answer is 3/8)
My Question:
e) What do the probabilities from parts (a) to (e) add up to?

Answers

Answer:

1/8 + 1/8 + 3/8 + 3/8 = 2/8 + 6/8 = 8/8 = 1

So the answer would be 1.

Determine if the point (12, 20) is on the
graph of y = 2x – 5. Justify your answer.

Answers

Answer:

456[67]98

Step-by-step explanation:

Answer:

Step-by-step explanation:

for the point (12,20) to be on the graph the equation of the line has to be true.

y=2x-5 so is it true that

20= 2*12-5

20=19 false

so the point is not on the graph

What is the distance between the points -21,-7 and -5,-7

Answers

Answer:

16

Step-by-step explanation:

Answer:

give the brainliest to the girl

Step-by-step explanation:

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