Answers
Answer:
If the secant = 2, this would be where the cosine = 1/2 = a 60° degree angle in the first quadrant and the 4th quadrant.
And the cot (60°) = 1/√3 = √3 /3
And the cot of a 60° angle in the 4th quadrant (i.e., 330°) is (- √3 /3)
Related Questions
Draw a line representing the "rise" and a line representing the "run" of the line. State
the slope of the line in simplest form.
Click twice to plot each segment.
Click a segment to delete it.
Answers
I can't plot it for you, but the slope will be the y/x or the rise/run.
You can find the slope by using 2 points of the line and subtracting the (y1-y2)/(x2-x1)
Lucy can choose one sandwich ham or turkey, once side apple or grapes, one drink milk or water. Lucy has equally likely chance of choosing any combination. What is the probability that lucy picks milk with a turkey sandwich and apple?
1/8
or
1/10
Answers
Answer:
please stop spamming on people's questions bc ik you wouldnt appreciate it.
Step-by-step explanation:
A study published in Psychiatry Research states that 62% of autistic children are left-handed.[12]
A local resource for children with autism, Central Coast Autism Learning Partners, is curious to see
if their set of autistic children show a similar proportion of being left-handed. When a random
sample of 26 autistic children were observed, 17 were found to be left-handed. Is there enough
statistical evidence based on the sample to dispute the results of the study published in Psychiatry
Research? Use the P-value method and let
a=.05.
Answers
Answer:
The pvalue of the test is 0.7188 > 0.05, which means that there is not enough statistical evidence based on the sample to dispute the results of the study published in Psychiatry Research.
Step-by-step explanation:
Test if there is enough statistical evidence based on the sample to dispute the results of the study published in Psychiatry Research:
This means that at the null hypothesis we test if the proportion is 62%, that is:
[tex]H_0: p = 0.62[/tex]
At the alternate hypothesis, we test if the proportion is different from 0.62, that is:
[tex]H_a: p \neq 0.62[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample
62% is tested at the null hypothesis:
This means that [tex]\mu = 0.62, \sigma = \sqrt{0.62*0.38}[/tex]
When a random sample of 26 autistic children were observed, 17 were found to be left-handed.
This means that [tex]n = 26, X = \frac{17}{26} = 0.6538[/tex]
Value of the test statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{0.6538 - 0.62}{\frac{\sqrt{0.62*0.38}}{\sqrt{26}}}[/tex]
[tex]z = 0.36[/tex]
Pvalue of test and decision:
The pvalue of the test is the probability of a proportion that differs from the mean by at least 0.6538 - 0.62 = 0.0338, which is P(|z| > 0.36), which is two multiplied by the pvalue of z = -0.36
Looking at the z-table, z = -0.36 has a pvalue of 0.3594
2*0.3594 = 0.7188
The pvalue of the test is 0.7188 > 0.05, which means that there is not enough statistical evidence based on the sample to dispute the results of the study published in Psychiatry Research.
Please answer correctly :) I will mark a brainliest answer !
Answers
Answer:
90 degrees because it is a corner.... and it make a perfect right angle
Step-by-step explanation:
You are renting a car. You can choose a compact, mid-size,
full-size, or sports utility vehicle. From those
categories you can choose a low, average, or high priced
model. How many different automobile choices do you have?
Answers
Answer:
I believe the answer is 4
Step-by-step explanation:
ABCD is a square and it's side is 16 cm long. What is the area of the shaded part?
Answers
Answer:
I'm sorry I can't help because I don't know what part is shaded. Note: Since a square has the same length for each side all the sides are 16 cm.
Area and Perimeter for WHOLE square:
A: 256 sq cm
P: 64 cm
Please help fast please
Answers
Answer:
232 sq. m
Step-by-step explanation:
HELPP FAST PLEASEEEE
Answers
Answer:
30%
Step-by-step explanation:
because I have answered this one and for it right
Geometry pls help :(
Answers
Answer:
900 pi for first question and 14137 for 2nd
Step-by-step explanation:
SA=4pi r^2
r=15 (30/2)
SA=4pi(15^2)
SA=900pi
V=4/3pi r^3
V=4/3(3.14)(15^3)=14137
Answer:
Surface area: 900π in²
Volume: 4500π in³
Step-by-step explanation:
A = 4πr² = 4π(15²) = 900π
V = 4/3 πr³ = 4/3 π(15³) = 4500π
pls help asap, ill give brainiest
Answers
The answer is D
If this helped a brainliest would be appreciated!
what its 600+600 pls help
Answers
Answer:
1200 hope this help you! ;)
Emily is having a bad cold. She uses up of a box of tissues every day. How many boxes of tissues does she need to buy if she expects the cold to last for? days? How many boxes does she need to buy so she doesn't run out of tissues?
Answers
Answer:
Step-by-step explanation:
1 per day Taylor , but the question doesn't say how many days... :/
Help me and I’ll give you brainliest
Answers
Answer:
Q = 12 meters
Step-by-step explanation:
Since all angles of the triangles are the same, the two triangles are similar. Therefore, all you need to do is a simple comparison equation like 10/15=8/x and solve.
Cross multiply, 10x=120. Divide and get x = 12.
Hope this helps!
Joe wants to place plants around each of four sides of a square yard. If he’s planned for each of the four sides to show six plants (including corner plants), how many plants will he need?
Answers
Answer:
21
Step-by-step explanation:
1 side = 6 plants (including one in the corner)
3 sides = 5 plants each
6+15 = 21
slo
[tex] {e}^{4 - 7x} + 11 = 20[/tex]
ve
Answers
Answer:
x is about 0.26
Step-by-step explanation:
[tex]e^{4-7x}+11=20[/tex]
[tex]e^{4-7x}=9[/tex]
[tex]ln(e^{4-7x})=ln(9)[/tex]
[tex]4-7x=ln(9)[/tex]
[tex]-7x=ln(9)-4[/tex]
[tex]x=\frac{ln(9)}{-7} +\frac{4}{7}[/tex]
[tex]x=\frac{4-ln(9)}{7}[/tex]
[tex]x=0.2575393461[/tex]
Find the Volume of a sphere if the radius is 3 inches. Leave your answer in terms of π
Answers
Answer:
The answer is 9.42 inches
Gina is buying the t-shirt at $10 the sales tax is 7.5%
Answers
Answer:
$17.50
Step-by-step explanation:
THATS THE TOTAL THE SALES TAX WOULD BE $0.75
thank you for your time
You buy a watch for $60. There is a 6% sales tax. What is your total cost for the watch?
(Answer is $63.60)
Use the information above to help you answer this question. Your friend buys the same watch a month later. It is now sold at a discount of 15%. What is the new sale price? (DO NOT INCLUDE THE TAX)
Answers
Answer:
Step-by-step explanation:
60 *15%= 9
60 - 9 = 51
the discounted watch cost
$51.00
every 60 seconds in Africa a minute passes
Answers
Answer:
Oh it's common in all countries.
Find the area of each figure. Use 3.14 for pi
Answers
An isosceles triangle has an angle that measures 116°. Which other angles could be in that isosceles triangle? Choose all that apply.
Answers
Answer:
Step-by-step explanation:
since we know that triangles have 180° we know that 116° is two much if it's doubled 2*116 = 232° so that angle has to be the single angle and the left over of 180 - 116 is the left over amount that is even divided into the last two angles so 180 - 116 = 64 / 2 = 32° so the triangle is made up of 116 + 32 + 32 degree angles
50 qt = ___gal ____qt
answers:
a. 3gal 2qt
b. 12gal 2qt
c. 12gal
d. 5gal
Answers
Answer:
12 gallons 2 quarts
Step-by-step explanation:
¿Cuánto es el interés simple de $800.00 al 3.5 % durante un año?
Answers
Answer:
$28
Step-by-step explanation:
given that
The Principal amount is $800
The rate of interest is 3.5%
And, the time period is one year
we need to find out the simple interest
As we know that
Simple interest = Principal × rate × time period
= $800 × 3.5% × 1 year
= $28
hence, the simple interest is $28
A dodecahedral die (one with 12 sides numbered from 1 to 12) is tossed once. Find the following probability. (Enter your probability as a fraction.)
The number on the upward face is not 4.
Answers
Answer:
11/12
Step-by-step explanation:
::::::::::::::::
The probability of the number on the upward face is not 4 would be 11/12 or 0.92 by calculating as follows:
Solution:
The possible outcomes for rolling a dodecahedral die, numbered from 1 to 12, once is given below in the term of sample space S:
S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}.
Therefore,
n(S) = 12
Event A: Sample space in the case of not having number 4 on the upward face:
A = {1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12}
therefore,
n(A) = 11
the probability of an event can be calculated by:the required probability = [tex]\dfrac{\text{Number of times event A, occurred}}{\text{Number of times this experiment performed}}[/tex]
then putting the space values here;
= [tex]\frac{n(A)}{n(S)}=\frac{11}{12}=0.92[/tex]
Thus, the required probability is 0.92
Learn more about the probability of an event:
https://brainly.com/question/24028840
Find the surface area of the triangular prism.
Answers
Answer:
96 ft²
Step-by-step explanation:
SA = 2bh/2 + Ph
SA = 2(4)(3)/2 + (3 + 4 + 5)(7)
SA = 12 + 84
SA = 96
Answer: 96 ft²
please help & explain PLEASE
Answers
Answer:
A. y = 4.5x
Step-by-step explanation:
y is the length of the fish and x is the time, by checking each equation with values in the table you can see that this is the one that represents the relationship.
Example using (4 yrs, 18 cm):
A: 18 = 4.5(4) ✅
B: 4 = 4.5(18) ❌
C: 4 = 9(18) ❌
D: 18 = 9(4) ❌
the sum of 2 numbers is 56.twice the smaller number exceeds one-half the larger number by 22.find the numbers
Answers
9514 1404 393Answer:
20, 36
Step-by-step explanation:
Let x and y represent the smaller and larger numbers, respectively. The given relations let us write two equations:
x + y = 56 . . . . . . the sum of the two numbers is 56
2x -y/2 = 22 . . . . twice the smaller exceeds half the larger by 22
We can solve this by multiplying the second equation by 2 and adding the first.
2(2x -y/2) +(x +y) = 2(22) +56
5x = 100 . . . . . . simplify
x = 20
y = 56 -20 = 36
The two numbers are 20 and 36.
Show or explain your answer
Answers
Answer:
This is an exponential function:
A(s) = 2^s, where A- population of alien's, s - number of splits (or hours)For the alien population become larger than 79942, time required:
2^s > 79942log 2^s > log 79942s > log 79942/ log 2s > 1617 hours
For the alien population become larger than 330232606, time required:
2^s > 330232606log 2^s > log 330232606s > log 330232606 / log 2s > 2829 hours
Help. What’s the answer to this problem?
Answers
Answer:
C) Yes, it’s a reflection over line f.
Step-by-step explanation:
It’s a reflection over line f.
Someone helppp pls :(((((
Answers
Answer:
y = ½x + 8
Step-by-step explanation:
✔️First, find the slope (m) using any two given pairs of values, say (0, 8) and (2, 9):
Slope (m) = change in y/change in x
Slope (m) = (9 - 8)/(2 - 0)
Slope (m) = 1/2
m = ½
✔️Find the y-intercept (b):
The y-inteeceot of the function would be the value of y when x = 0.
Form the table, when x = 0, y = 8. Therefore:
y-intercept (b) = 8
✔️To write the equation of the function, substitute m = ½ and b = 8 into y = mx + b.
Thus:
y = ½x + 8