Find an exact value. cosine of negative seven pi divided by twelve a) square root of six plus square root of two b) quantity square root of six minus square root of two divided by four c) square root of two minus square root of six d) quantity square root of two minus square root of six divided by four
Answers
Answer:
The correct option is d
d) (√2 - √6)/4
Step-by-step explanation:
The term given in the question is:
cos (-7π/12)
Solve the term by using scientific calculator:
cos (-7π/12) = (1 / 2√2) - (√3 / 2√2)
Mulitplying and dividing both terms on the right hand side of equality with 2√2:
(1 / 2√2) - (√3 / 2√2) = (1 / 2√2)(2√2 / 2√2) - (√3 / 2√2)(2√2 / 2√2)
(1 / 2√2)(2√2 / 2√2) - (√3 / 2√2)(2√2 / 2√2) = 2√2 / (2√2)² - (2√2)(√3) / (2√2)²
2√2 / (2√2)² - (2√2)(√3) / (2√2)² = 2√2 / (4)(2) - 2√6 / (4)(2)
2√2 / (4)(2) - 2√6 / (4)(2) = √2/4 - √6/4
√2/4 - √6/4 = (√2 - √6)/4
Related Questions
how to solve 526.8- 318.05
Answers
Answer: 208.75
Step-by-step explanation: The result of 526.8−318.05 is 208.75. Basically
you use long subtraction to solve this equation. The image I attached will show you how to do it:
I'm dum help me please
Answers
Answer:
um i do beleive it is: the operation is addition, and the constants are 17 and 8
Step-by-step explanation:
Answer:
The operation is additionThe constants are 17 and 8A six-sided number cube is rolled 300 times. The results are 120 even numbers and 180 odd numbers.
How does the relative frequency of rolling an even number compare to the theoretical probability?
Select from the drop-down menus to correctly complete the statements.
The relative frequency of rolling an even number is
Choose... 1. A equal to B Greater than C Less than
the theoretical probability. The theoretical probability is
Choose...2. A 0.4 B 0.5 C 0.6
and the relative frequency is
Choose... 3. A 40% B 50% C 60%
PLS HELP ASAP GIVE YOU 35 POINTS.
Answers
Answer:
What is the probability formula?
Image result
In general, the probability is the ratio of the number of favorable outcomes to the total outcomes in that sample space. It is expressed as, Probability of an event P(E) = (Number of favorable outcomes) ÷ (Sample space).
Answer:
1. Less than
2. 0.5
3. 40%
Step-by-step explanation:
I took the quiz
A spinner with repeated colors numbered from 1 to 8 is shown. Sections 1 and 8 are purple. Sections 2 and 3 are yellow. Sections 4, 5, and 6 are blue. Section 7 is red.
spinner divided evenly into eight sections numbered 1 through 8 with three colored blue, one red, two purple, and two yellow
Determine the theoretical probability of the spinner landing on yellow, P(yellow).
0.125
0.25
0.625
0.75
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thirty decreased by a number is four times the number. write equation!
PLS HURRY UP, THIS IS URGENT!!!!!
Answers
Answer:
x - 30 = 4x
Step-by-step explanation:
PLEASE HELP ME
Evaluate.
a−2b when a=−2 and b=4
Enter your answer in the box.
Answers
-2-8=-10,,, replace the numbers with the letters, perform the operations. Multiplication before subtraction or addition
Start with -2-2(4)
Multiplication first, so 2(4) is 8
Now you have -2-8
-2-8 is -10
PLEASE HELP. URGENT 8TH GRADE MATH QUESTION. GIVING AS MANY POINTS AS I CAN TO THE CORRECT ANSWER. THANK YOU YA'LL ARE LIFE SAVERS
Answers
Z=98
I’m bad at explaining so if you needed an explanation I’m sorry!!
Because z and 82 angles are internal angles
And total of the two inner corners 180
Y =82+32 =114
Y=114 multiply 5=22.8
(Being Timed) Which of the following relations is NOT a function?
Answers
If x = 4 units, y = 12 units, and h = 8 units, find the area of the parallelogram shown above using decomposition.
Answers
Answer:
if by decomposition you mean breaking it into parts then
break it into 2 triangles and 1 rectangle
left to right
triangle with base y and height h
h=10
y=3
area of triangle=1/2bh
area=1/2(10)(3)
area=5(3)
area=15
rectangle of length x and height h
area= length times width
x=8
h=10
area=8 times 10
aera=80
last triangle
should be same as other since same base (y) and same height (h)
15
add
15+80+15=120
Step-by-step explanation:
Can someone pls help?!
Find the product of........ The rest of the question is down below.
Answers
Answer: The answer is −2x+14 just take away the parentheses.
Select all of the following that have the same value as 30,452.
A. (3 x 1,000) + (4 x 100) + (5 x 10) + (2 x 1)
O B. (3 x 104) + (4 x 10°) + (5 x 10?) + (2 x 10')
OC. 30.000 + 400 + 50 + 2
D. thirty thousand, four hundred fifty-two
E. (3 x 10') + (4 x 10-) + (5 x 10") + (2 10')
F. thirty-four thousand, fifty-two
Answers
Answer:
d
Step-by-step explanation:
You could just do process of elimination. So for the first one if you add them all up you would get 3,452 which is not correct, for the second one would not be correct since after you do 3 times 104 you can see it is wrong, for c it is also wrong since there is a 30 not a 30,000, for d it is correct since if you write it out is is 30,452, for E it is not correct just by looking at the problem, and for F it cannot be correct since it does not be the right answer
The correct answer is thirty thousand, four hundred fifty-two.
What is expanded form?The expanded form helps us to better understand a given number. Let us take an example of the number 875294831. It is difficult to understand this number. Here an expanded form helps us to understand each of the digits based on their place value. Let us take a simple number 324 and try to find its expanded form. 324 is written in expanded form as 300 + 20 + 4. It means there are three hundred, two tens, and 4 ones in this number.
Given number:
30452
The expanded form is
=3*10000+0*1000+4*100+5*10+2*1
So, there is no match for this.
If we write in words it can be written as thirty thousand, four hundred fifty-two.
Hence, the correct option id (D).
Learn more about expanded form here:
https://brainly.com/question/17837892
#SPJ2
help.... I gotta turn in 28 minutes
Answers
Answer:
ask your teacher for help
Step-by-step explanation:
A scale drawing of an office space uses a scale of 1 inches.:4 ya.The scale drawing has an area of 12 square inches.What is the area of the actual office space?
Answers
Since one inch equals 4 yards, you multiply the 12 inches by 4. The answer would be 48 inches, or 16 yards.
What are 109 Apples - 50 Apples - 1 Pineapple
- = Minus sign
Answers
Answer:
i hope my answer help u
Step-by-step explanation:
it will be 59 Apples-1 pineapple
Answer:
58
hope this helps :D
Pls solve and show each step
Answers
Answer:
H. is the correct answer.
Step-by-step explanation:
You find range by subtracting the lowest amount from your data by the highest amount. The highest number in Ms. Gambino's class is 12, and the lowest is 5.
\(12-5=7\) This is the range of Ms. Gambino's class
The highest number in Mr. Joe's class is 10 and the lowest is 5
\(10-5=5\\\) This is the range of Mr. Joe's class.
Therefore, the range in Mr. Joe's class is less than the range of data in Ms. Gambino's class.
NEED HELP ASAP Triangle JKL was dilated with the origin as the center of dilation to create triangle J'K'L'. The triangle was dilated using a scale factor of 1/2 Which rule represents the dilation applied to triangle J K L to create its image, triangle J′ K′ L′ ?
Answers
Answer:
Step-by-step explanation:
C
whats 5 x 2/5 x 6/13? :P
Answers
Answer:
Step-by-step explanation:
32/13.
5*2/5=2
2*6/13=32/13
Answer:
0.92307692307
Step-by-step explanation:
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Answers
According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
At a recent football game of 8,450 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.
Ketchup Relish Chili
54 36 60
Based on the data in this sample, how many of the people in attendance would prefer ketchup on a hot dog?
4,225
3,380
3,127
3,042
Answers
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Answer:
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Step-by-step explanation:
This problem to please
Answers
Answer:
..
Step-by-step explanation:
-18 -14 -8 -6 -4 4
Can someone help asap I will make you the brainliest
Answers
Answer: P = 3a
Step-by-step explanation:
3(4x - 8)
12x-24
12x = 24
x = 24/12
x=2
3(4X2 = 8 - 8)
3(0)
0
its a math test again-
Answers
Answer:
A. t > 2.5
Step-by-step explanation:
If she wants to achieve more than 590, we already know the sign would be greater than (>).
All we have to do is divide 590/236, which gives us 2.5.
Therefore, she will have to ride more than 2.5 hours to reach her goal, t > 2.5
Hope this helps :)
Good luck on your test.
Which equation represents the relationship between the x-values and y-values in the graph?
F y= 3/5x-5
G y= 3/5x+5
H Y= 5x-3/5
J Y= -5x+3/5
Answers
Answer:
y= -5x+3/5
Step-by-step explanation:
start by finding the y value, because it is on the y axis it's -5. next find the rise so in this case it is 3 then find the run it is 5, put the rise and run in fraction form 3/5 (remeber rise over run) and you get the awnser y= -5x+3/5
What is the area of this parallelogram?
60 cm2
66 cm2
72 cm2
132 cm2
Answers
I don't quite get what it is asking please help me.
Answers
2x + 20 + 3x + 40 = 90
Simplifying the left side of the equation by combining like terms, we get:
5x + 60 = 90
Subtracting 60 from both sides of the equation, we get:
5x = 30
Finally, dividing both sides of the equation by 5, we get:
x = 6
Therefore, the value of x is 6.
Answer:
Step-by-step explanation:
COMPLEMENTARY ANGLES ARE THE ANGLES THAT SUM EQUALS TO 90°.
∴ 5X+60°=90°
5X=30° ⇒X=6°
Question is in image. do not do E and F. Only G.
(And please you spam bots. do not post some ip grabber links. I'm tired of it. if the owner of these bots sees this just know your a horrible person and please get a life.)
Answers
two angles whose sum is 180°
180-84=96
96° is the angle measure that is supplementary to 84°
I WILL GIVE BRAINLIEST ( hurry!1!! :[ )
Answers
b
Step-by-step explanation:
because I am not sure what to do with my life
Can you solve this for me? Thank you! :>
Answers
Answer: Z=14
Step-by-step explanation:
Simplify the equation: 1/4z=7/2
then multiple both sides by 4:
4 (1/4) = 4 (7/2)
z= 14
Answer: z=14
Step-by-step explanation: very easy
1/4z = 3 1/2 Divide each side by 1/4 to isolate z
3 1/2 will be divided by 1/4
How to divide 3 1/2 by 1/4?
Keep, change, flip.
First: Convert 3 1/2 to an improper fraction which is 7/2
Second: 7/2 / 1/4 keep 7/2
7/2 x 1/4 change from dividing to multiplying
7/2 x 4/1 flip 1/4 around to make it 4/1
28/2 multiply and then simplify to 14.
so the answer is 14
Is it more difficult to run up a ramp with a slope of \(\frac{1}{5}\) or a ramp with a slope of 5?
Answers
Answer:
It is more difficult to run up a slope of 5
Step-by-step explanation:
Answer:
It is more difficult to run up a ramp with a slope of 5
Step-by-step explanation:
a slope of 1/5 is easy to run up; but a slope of 5 is not.
example: 1/5 of an inch is much shorter than 5 inches.
PLEASE HELP I AM GIVING 100 POINTS FIRST COME FIRST SERVE ALSO GIVING BRAINLIEST TO THE FIRST PERSON WITH THE CORRECT ANSWER
Answers
Answer:
A = plane
B = whale
C = sunken ship
Step-by-step explanation:
The given vertical number line is modelling the positions of objects and animals in relation to sea level.
Sea level is the average height of the surface of the world's oceans, which we use as a reference point to measure the elevation and depth of land and water features on Earth.
From inspection of the given number line:
Position A is above sea level.Position B is just below sea level.Position C is the furthest below sea level.We have been told that a plane is flying at 8,500 feet above sea level. Therefore, as position A is the only position above sea level, A = plane.
We have been told that a sunken ship is resting at 3,000 feet below sea level, and that directly above the ship, a whale is swimming 1,960 feet below sea level. Therefore, the whale is above the ship. As position B is above position C, this means that B = whale and C = sunken ship.