Which equations for the measures of the unknown
angles x and y are correct? Check all that apply.
A- x= cos-1[a/c]
B- x= sin-1[c/b]
C- x= tan-1[c/a]
D- x= sin-1[a/c]
E- x= cos-1[c/b]
Answers
Answer: B, C, and E
Step-by-step explanation:
I just did the assignment
Related Questions
80 people attended a meeting. There was x men and x women and the rest were children. How many children attended the meeting
Answers
Answer:
80 - 2x
Step-by-step explanation:
Given
Total number of people = 80 people
Total men = x men
Total women = x women
Let the number of childeren be c
x + x + c = 80
Make c the subject of the formula
c = 80 - (x+x)
c = 80 - 2x
Hence the total children attending is 80 - 2x
Samples of emissions from three suppliers are classified for conformance to air-quality specifications. The results from 100 samples are summarized as follows:
conforms
yes no
1 22 8
supplier 2 25 5
3 30 10
Let A denote the event that a sample is from supplier 1, and let B denote the event that a sample from any supplier conforms to specifications. If a disk is selected at random, determine the following probabilities.
a. P(A)=0.3
b. P(B)=0.77
c. P(A ∩ B) =0.22
d. P(A U B)=0.85
Answers
Answer
[tex]P(A) = 0.30[/tex]
[tex]P(B) = 0.77[/tex]
[tex]P(A\ n\ B) = 0.22[/tex]
[tex]P(A\ u\ B) = 0.85[/tex]
Explanation:
Given
See attachment for proper data presentation
[tex]n = 100[/tex] --- Sample
A = Supplier 1
B = Conforms to specification
Solving (a): P(A)
Here, we only consider data in sample 1 row.
Here:
[tex]Yes = 22[/tex] and [tex]No = 8[/tex]
[tex]n(A) = Yes + No[/tex]
[tex]n(A) = 22 + 8[/tex]
[tex]n(A) = 30[/tex]
P(A) is then calculated as:
[tex]P(A) = \frac{n(A)}{Sample}[/tex]
[tex]P(A) = \frac{30}{100}[/tex]
[tex]P(A) = 0.30[/tex]
Solving (b): P(B)
We only consider data in the Yes column.
Here:
[tex](1) = 22[/tex] [tex](2) = 25[/tex] and [tex](3) = 30[/tex]
[tex]n(B) = (1) + (2) + (3)[/tex]
[tex]n(B) = 22 + 25 + 30[/tex]
[tex]n(B) = 77[/tex]
P(B) is then calculated as:
[tex]P(B) = \frac{n(B)}{Sample}[/tex]
[tex]P(B) = \frac{77}{100}[/tex]
[tex]P(B) = 0.77[/tex]
Solving (c): P(A n B)
Here, we only consider the similar cell in the yes column and sample 1 row.
i.e. [Supplier 1][Yes]
This is represented as: n(A n B)
[tex]n(A\ n\ B) = 22[/tex]
The probability is then calculated as:
[tex]P(A\ n\ B) = \frac{n(A\ n\ B)}{Sample}[/tex]
[tex]P(A\ n\ B) = \frac{22}{100}[/tex]
[tex]P(A\ n\ B) = 0.22[/tex]
Solving (d): P(A u B)
This is calculated as:
[tex]P(A\ u\ B) = P(A) + P(B) - P(A\ n\ B)[/tex]
This gives:
[tex]P(A\ u\ B) = \frac{30}{100} + \frac{77}{100} - \frac{22}{100}[/tex]
Take LCM
[tex]P(A\ u\ B) = \frac{30+77-22}{100}[/tex]
[tex]P(A\ u\ B) = \frac{85}{100}[/tex]
[tex]P(A\ u\ B) = 0.85[/tex]
Which piecewise relation defines a function?
Answers
Answer:
Concept: Functions
A function on an ordinary plane will be continous and discrete. Lets consider the answer choices!C would define a functionMultiply 3x7, Minus 12=
Answers
Answer:
Your answer would be 9
Step-by-step explanation:
hope this helps
pls mak brainliest
which is greater -3/4 or -1/2 please this is big test
Answers
Answer:
-3/4 < -1/2
Step-by-step explanation:
have a good day luv! ^^
An aerial photographer who photographs real estate properties has determined that the best photo is taken at a height of approximately 483 ft and a distance of 858 ft from the building. What is the angle of depression from the plane to the building?
Answers
Answer:
x = distance from the building = 837 ft
y = height = -483 ft (The building is DOWN from the plane.)
θ = angle of depression = to be determined
tan θ = y/x
tan θ = -0.577060932
θ = arctan (-0.577060932)
θ = -29.98756509 ° ≈ -30 ° (The building is DOWN from the plane.)
Step-by-step explanation:
Cited from Yahoo! Answers. Please don't sue me!
Given:
Opposite= 483 ft
Hypotenus= 858 ft
To find:
The angle of depression=?
Solution:
Since they are alternative inner angles, the angles of altitude and depression are equal. Within right-angle triangular, we obtain opposite=483 and hypotenus=858. So, to use a trigonometric ratio, we get[tex]\to \sin \theta =\frac{opposite}{hypotenus} \\\\ \to \sin \theta =\frac{483}{858} \\\\\to \theta = \sin^{-1} (\frac{483}{858}) \\\\\to \theta \approx 34.25^{\circ} \\\\[/tex]
An angle of dip from the plane to the building is [tex]34^{\circ}[/tex]Learn more about the angle of depression:
brainly.com/question/9817377
(2 - (- 2)²)² +5 · ( -4)
Answers
Answer:
-164
Step-by-step explanation:
(2 - (- 2)²)² +5 · ( -4)
(2 + 2²) ² +5 · ( -4)
(2 + 2 + 2)² +5 · ( -4)
6² +5 · ( -4)
6 · 6 + 5 · -4
36 + 5 · -4
41 · -4
-164
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Use the following x-values (0, 1, 2, 3) to find ordered pairs for this equation: y = 2x - 3
Answers
Step-by-step explanation:
When x = 0, y = 2(0) - 3 = -3.
When x = 1, y = 2(1) - 3 = -1.
When x = 2, y = 2(2) - 3 = 1.
When x = 3, y = 2(3) - 3 = 3.
The ordered pairs are (0, -3), (1, -1), (2, 1), (3, 3).
Liam has to fill a hole in the ground that is 24 inches deep. He fills the hole at a rate of 6 inches in 30 minutes. Write a function that models the depth of the hole in feet over time in hours.
Answers
Answer:
The function that models the depth of the hole in feet over time in hours is [tex]h(t) = 24 - 12\cdot t[/tex].
Step-by-step explanation:
According to the statement, the variable to be modelled is the depth of the hole, which decreases whereas is filled. Under the assumption that the hole is filled at constant rate, we obtain the following expression:
[tex]h(t) = h_{o}-\frac{\Delta h}{\Delta t}\cdot t[/tex] (1)
Where:
[tex]h(t)[/tex] - Current depth of the hole, measured in inches.
[tex]h_{o}[/tex] - Initial depth of the hole, measured in inches.
[tex]\Delta h[/tex] - Filled level, measured in inches.
[tex]\Delta t[/tex] - Filling time, measured in hours.
[tex]t[/tex] - Time, measured in hours.
If we know that [tex]h_{o} = 24\,in[/tex], [tex]\Delta h = 6\,in[/tex] and [tex]\Delta t = 0.5\,h[/tex], then the function that models the depth of the hole is:
[tex]h(t) = 24 - 12\cdot t[/tex]
The function that models the depth of the hole in feet over time in hours is [tex]h(t) = 24 - 12\cdot t[/tex].
You roll two fair dice, a green one and a red one.
Required:
a. What is the probability of getting a sum of 8? (Enter your answer as a fraction.)
b. What is the probability of getting a sum of 4?
c. What is the probability of getting a sum of 8 or 4?
d. Are these outcomes mutually exclusive?
Answers
Answer:
[tex]a.\ \frac{5}{36}\\b.\ \frac{1}{12}\\c.\ \frac{2}{9}\\d.\ $Not mutually exclusive$[/tex]
Step-by-step explanation:
Given two fair dice are rolled, one green and one red.
To find:
a. Probability of getting a sum of 8.
b. Probability of getting a sum of 4.
c. Probability of getting a sum of 8 or 4.
d. Are these outcomes mutually exclusive?
Solution:
First of all, let us have a look at the output of roll of two dice.
There are a total of 36 outcomes.
{(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)
(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)
(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)
(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)
(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)
(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)}
a. Getting a sum equal to 8, we have following outcomes:
{(2, 6), (3,5), (4, 4), (5,3), (6, 2)}
5 possible outcomes for this event.
Formula for probability of an event E can be observed as:
[tex]P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}[/tex]
[tex]P($Getting 8$) = \dfrac{5}{36}[/tex]
b. Getting a sum equal to 4, we have following outcomes:
{(1, 3), (2,2), (3, 1)}
3 possible outcomes for this event.
Formula for probability of an event E can be observed as:
[tex]P($Getting 4$) = \dfrac{3}{36} = \dfrac{1}{12}[/tex]
c. Probability of getting a sum of 8 or 4?
Following possible outcomes are there:
{(2, 6), (3,5), (4, 4), (5,3), (6, 2), (1, 3), (2,2), (3, 1)}
Total 8 possible outcomes:
[tex]P($Getting 8 or 4$) = \dfrac{8}{36} = \dfrac{2}{9}[/tex]
d. Are these outcomes mutually exclusive?
These events are not mutually exclusive because they contain the similar outcome from both of the dice.
i.e. (4, 4) and (2, 2)
A teacher has 613 fliers to divide equally among 29 students. About how many fliers will each student receive?
Answers
9. w +w+w+w:
I’m a little stuck
Answers
Answer:
Step-by-step explanation:
pretty simple, i am sure you know the answer, as you add all the variables=
=4w
Question
A football team sold raffle tickets to raise money for the upcoming season. They sold three different types of tickets:
premium for $8, deluxe for $3, and regular for $1. The total number of tickets sold was 155, and the total amount of money
from raffle tickets was $409. If 19 more deluxe tickets were sold than premium tickets, how many premium tickets were
sold?
Answers
9514 1404 393
Answer:
24
Step-by-step explanation:
Let p, d, r represent the numbers of premium, deluxe, and regular tickets sold, respectively.
p + d + r = 155 . . . . . . . number of tickets sold
8p +3d +r = 409 . . . . . revenue from tickets sold
d - p = 19 . . . . . . . . . . . relation between deluxe and premium tickets
Using the third equation, we can substitute d=19+p in the other two equations.
p + (19+p) +r = 155
8p +3(19+p) +r = 409
Subtracting the first of these equations from the second, we get ...
(11p +r +57) -(2p +r +19) = (409) -(155)
9p = 216 . . . . . . subtract 38 and simplify
p = 24 . . . . . . . . divide by 9
24 premium tickets were sold.
Product A is an 8-oz. bottle of cough medication that sells for $1.36. Product B is a 16-oz. bottle of cough medication that costs $3.20. Which product has the lower unit price?
Answers
Answer:
A
Step-by-step explanation:
Jason and Martin want to share 3 cookies equally. How much cookie will Jason and Martin each receive? Write an equation and express your answer as a fraction.
Answers
Answer: each will get 3/2
Step-by-step explanation:
They will each get a whole cookie with one left over that they can break in half.
4 x 4/6 is it equal to, less than, or greater than
Answers
Answer:
Greater than
Step-by-step explanation:
It becomes 8/3
Answer:m no
Step-by-step explanation:
The mean number of songs downloaded by a group of teens last month was 28 with a standard deviation of 3. If the number of songs that Jack downloaded wos one standard deviation below the mean, how many did
he download?
Answers
Answer:
Jack downloaded 25 songsStep-by-step explanation:
The mean = 28The standard deviation = 3One standard deviation below the mean:
28 - 3 = 25Jack downloaded 25 songs
⇒ m∠A + m∠B + m∠C = 180°
⇒ 25° + 25° + m∠C = 180°
⇒ 50° + m∠C = 180°
⇒ m∠C = 180° – 50°
⇒ m∠C = 130°
Answers
Answer:
130
Step-by-step explanation:
Which choice shows the coordinates of B’ if the trapezoid is reflected across the x-axis?
A,(-7,2)
B,(2,-7)
C,(7,-2)
C,(-2,7)
Answers
Answer:
The answer is C
Step-by-step explanation:
Edgy 2021 Unit Test
If x=-2 substitute the value of x into the expression and simplify
Answers
Answer:
-17
Step-by-step explanation:
the expression is 6x-5
Substituting x=-2
6(-2)-5
(-12)-5=-17
i cant afford to get another wrong one bro
Answers
Answer:
3 & 6
Step-by-step explanation:
right angles will form perpendicular sides, and shapes 3 and 6 are the only ones with right angles
(PLEASE HELP THIS IS DUE IN LIKE 10 MIN) What is the measure of angle P
Answers
117
130+110=240
240/101=2.37623762376x the equlatiral line by its invisible circle you get 117
Naomi can text 90 words in 12 minutes. At this rate, how many minutes would it take her to text 165 words?
please put it step by step
Answers
Solve equation q-14=12
Answers
Answer:
q=12+14
=26
Step-by-step explanation:
the answer would be 26
Determine if the function is a polynomial function. If the function is a polynomial function, state the degree and the leading coefficient. If the function is not a polynomial, state why. f(x)=(x+1)^1/2(x+2)
Answers
It is not a polynomial because there is a fractional exponent.
Why can’t I use exponents?
Answers
Answer:
try to look it up it shows you videos and everything
Step-by-step explanation:
can i please have a thank you heart and brainliest
Answer:
Try using ^# to show an exponent
Explanation:
People will probably still understand it
Hope it helped!
Find the measure of angle x and y
Answers
Answer:
B
Step-by-step explanation:
The total of a kite is 360° so subtract 155 from that to get 205 which divided by 2 is 102.5
Oliver wants to buy a hat that has an original price of $25. The store is having a 20% off sale on everything in the store.
Question: With this sale, what is the final cost of the hat?
Answers
Answer:
$20
Step-by-step explanation:
20% of 25 is 5
5 dollars off $25 is $20
What is 23% of 3500
Does any one know it’s for a test lol
Answers
Answer:
805
Step-by-step explanation:
It's kinda hard to explain but first you would convert 23% to a decimal. To do that, move the decimal 2 places to the left, resulting in 0.23. Then multiply 3500 by 0.23 to get your answer.
The probability of spinning an even number on a wheel of 4 and flipping tails is___ (Ive been checking all day and none of the answers are correct)
Answers
Answer:
i think 12
Step-by-step explanation:
Answer:
it's like a 50% probability
