Explain why sine of an angle greater than 180° and less than 360° is negative.
Answers
9514 1404 393
Explanation:
The sine of an angle in standard position is the y-coordinate of the intersection of its terminal ray with the unit circle. When the angle is in the range 180° < θ < 360°, that point of intersection is in quadrant III or IV, where y-coordinates are negative.
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Alternative explanation:
That is where the sine curve is below the x-axis.
Related Questions
x = -11 + 7y
5x + 2y = -18
Answers
Answer:
x = -4
y = 1
(-4,1)
Step-by-step explanation:
x = -11 +7y
5x + 2y = -18
This is a Substitution problem, so you put x = -11+7y into 5x+2y = -18
5(-11 +7y)+2y = -18
5(-11) = -55
5(+7y) = 35y
-55+35y+2y = -18
Now you add 35y and 2y which gives you 37y
-55+37y = -18
Now you add +55 from -55 and -18
37y = 37
You divide each side by 37 so that y = 1
Now you plug y(1) into the equation x = -11+7y
x = -11+7(1)
-11+7 = -4
x = -4
6 x + 11 y = 29
x + 2 y = 5
Answers
Answer:
x = 3
y = 1
Step-by-step explanation:
x= 5-2y
6x + 11y = 29
6( 5 - 2y ) + 11y = 29
30 - 12y + 11 y = 29
-y = -1
y = 1
x + 2y = 5
x = 5 - 2y
x = 5 - 2
x = 3
Use the distributive property to write an expression that is equivalent to 8(7+x).
Answers
Answer:
56+8x
Step-by-step explanation:
Explanation: Multiply the 8 by the 7, then the 8 by the x. (8)(7) + (8)(x) Therefore the answer is 56 + 8x. This is called distributive property
Hope this helps! :)
) How many degrees of freedom are available for hypothesis tests and confidence intervals for single regression coefficient
Answers
Answer:
We use students' t distribution therefore degrees of freedom is v= n-2
Step-by-step explanation:
Confidence Interval Estimate of Population Regression Co efficient β.
To construct the confidence interval for β, the population regression co efficient , we use b, the sample estimate of β. The sampling distribution of b is normally distributed with mean β and a standard deviation σ.y.x / √(x-x`)². That is the variable z = b - β/σ.y.x / √(x-x`)² is a standard normal variable. But σ.y.x is not known so we use S.y.x and also student's t distribution rather than normal distribution.
t= b - β/S.y.x / √(x-x`)² = b - β/Sb [Sb = S.y.x / √(x-x`)²]
with v= n-2 degrees of freedom.
Consequently
P [ - t α/2< b - β/Sb < t α/2] = 1- α
or
P [ b- t α/2 Sb< β < b+ t α/2 Sb] = 1- α
Hence a 100( 1-α) percent confidence for β the population regression coefficient for a particular sample size n <30 is given by
b± t α/2 Sb
Using the same statistic a confidence interval for α can be constructed in the same way for β replacing a with b and Sa with Sb.
a± t α/2 Sa
Using the t statistic we may construct the confidence interval for U.y.x for the given value X0 in the same manner
Y~0 ± t α/2(n-2) SY~
Y~0= a+b X0
Quadrilaterals and other polygons
Answers
Answer:
B
Step-by-step explanation:
Which of the following equations is not a true statement?
-5 + 6 = -1
7 - (-3) = 10
-9 - (-4) = -5
-7 - 10 = -17
PLEASE ANSWER FAST IM IN A HURRY
Answers
Explanation: The correct answer for that equation should be 1 not -1
Answer:
It's not correct statement
Step-by-step explanation:
-5 + 6 = -1
Ann has two coupons for a chair.
Coupon A:
Coupon B:
35% off of a $55 chair
$22 rebate on a $55 chair
Choose the coupon that gives the lower price.
Then fill in the blank with the correct value.
Answers
Answer:Coupon B gives the lower price. The price of coupon B is $4.4 less than the price of coupon A.
Step-by-step explanation:
The coupon B gives the lower price. That means by using coupon B, Ann will get a chair at $33.
The price with coupon B is $2.75 less than the price with coupon A.
What is coupon?A coupon is a ticket or document that can be redeemed for a financial discount or rebate when purchasing a product.
What is percentage?A percentage is a proportion that shows a number as parts per hundred
How to convert percentage into a number?To convert a percent into a number divide the given percentage by hundred and remove the percentage sign.
According to the given question.
Ann has two coupon for a Chair.
Coupon A is giving 35 percent off on a chair of $55.
And, coupon B is giving $22 0ff on chair 0f $55
If Ann uses coupon A then the amount she have to pay for chair is given by
Amount = [tex]55-\frac{35}{100} ($55)[/tex]
Amount = [tex]55-0.35(55)[/tex]
Amount = [tex]55-19.25[/tex]
Amount = $35.75
If Ann uses coupon B then the amount she have to pay for chair is given by
Amount = $55 - $22
Amount = $33
Hence, the coupon B gives the lower price. That means by using coupon B, she will get a chair at $33.
Since, through coupon A the amount she have to pay is $35.75 and through B she have to pay the amount of $33.
Now, $35.75 - $33 = $2.75
Thus, the price with coupon B is $2.75 less than the price with coupon A.
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TSolve the system of equations below by graphing. What is the solution rounded to the nearest tenth? (–1.1, 3.2) (0.2, 2.8) (0.7, –4.2) (2.7, 0.1)
Answers
Answer: Answer:The solution to the given system of equations is (2.8,0.1)
Step-by-step explanation: I got it correct on the Unit Test
WILL MARK BRAINLIST!!!
Sabrina's average speed was 8 miles per hour during the first half of her bike ride. She increased her average speed to 16 miles per hour during the second half of her bike ride. What percentage represents the increase in Sabrina's average speed during her bike ride?
A. 50%
B. 80%
C. 100%
D. 200%
Answers
if 8 is a whole (100%) and 16 is twice of that, you can conclude that her speed increased by 200%
GUYS WHAT'S EBO ISHEK FROM IS QHAT
Answers
Answer: yes anazing splenddi
Step-by-step explanation:
HELLPP PLEASE
After becoming sick, a patient sees a doctor who determines the most likely cause is an allergic
reaction and prescribes an antihistamine. The patient returns home and stops burning candles and
incense for the next week while taking the medication. By the end of the week, the patient is feeling
better and is telling all his friends how wonderful the medication was at relieving his symptoms. This
is an example of
1. confounding, as there is no way to tell whether it was the medication that alleviated his
symptoms
2. convenience sampling since he only stopped burning candles and incense because it was easy
3.a double-blind experiment since neither he nor the doctor really knew what was wrong
4. bias since he wanted to feel better
Answers
Answer:
I think it is 1, but I am not 100%
Step-by-step explanation:
Since he stopped the meds at the same time he stopped what couldve been his cousin his reaction to begin with, you can prove if it was medication only.
f(x)=-2x+4
what is x when f(x)=-8
Answers
f(-8)=16+4
f(-8)=20
Answer:
20
Step-by-step explanation:
f(x) = -2 (x) + 4 (substitute x for the given value)
f(x) = -2 (-8) + 4 (multiply -2 and -8)
f(x) = 16 +4 (add 16 and 4)
f = 20
A group of friends receives a dinner bill for $87.50. The sales tax rate is 5%. They want to leave a 15% tip on the total bill after tax. How much money will they pay for their dinner with tax and tip?
First to answer get brainliest
Answers
A. $105
B. $105.63
C. $105.66
D. $105.88
Answers
Answer:
C 105.66
Step-by-step explanation:
Answer:
105.66
Step-by-step explanation:
whats 2+2 i honestly dont know
Answers
Answer:4
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
say you have 2 cookies then get 2 more then you have 4
You and a friend take pictures at a motocross event. Your camera can take 24 pictures in 3.75 seconds. Your friend's camera can take 36 pictures in 4.5 seconds. Evaluate the expression (36 divided by 4.5)/(24 divided by 3.75) to find out how many times faster your friend's camera is than your camera. *
Answers
Answer:
1.25
Step-by-step explanation:
use the equation given
12-5=88=5-12 emilyscarlett
Answers
Answer:
thx for da points :D
Step-by-step explanation:
Andrew makes $1 for
every bag of cans he
recycles. He has $2 in
his piggy bank. What
equation represents
the amount of money
Andrew has in his
account from recycling
bags of cans?
Answers
Answer:
1 + $1 = 2
Step-by-step explanation:
I think
It should be along the lines of this since the expression doesn’t specify how many bags he recycled. I’m not entirely sure in my answer but I hope it helped you somewhat.
Find the value of expression for (3.4) to the power of 2 show your work.
Answers
Answer:
11.56
Step-by-step explanation:
B gn nonnegotiable BMI Brock chambers k cancel j click chilling connect m BLM
Answers
Answer:
what?
Step-by-step explanation:
free points...thanks?
Which of the following uses the reciprocal property to rewrite
16/24 = 56/x?
1: 24/16 = x/56
2: 24/x = 56/24
3: 24/16 = 56/x
4: 16/24 = x/56
Answers
Answer:
1
Step-by-step explanation:
All you do is flip the numbers and you get 24/16 = x/56
Hope I helped :)
Carter's football team played 10 games this season. They won only 20% of their games. How many games did Carter's team lose?
Your answer:
Answers
The ratio of green apples to red apples at a grocery store is 2 to 3. There are 78 red apples at the grocery store. What is the total number of apples at the store?
Answers
Answer:
52
Step-by-step explanation:
78 divided by 3 is 26
26 times 2 is 52
Pls help;)))))))))))))))(
Answers
Answer:
Option 2)
Step-by-step explanation:
In a function, any number can be an x-coordinate only once.
Option 1) The 2 appears twice as x.
Option 2) All x-coordinates are different.
Option 3) The 2 appears twice as an x-coordinate.
Option 4) The 3 appears twice as an x-coordinate.
Answer: Option 2)
There are 8 girls and 5 boys on the math team. Which ratio correctly describes the relationship between boys and girls on the math team?
Answers
8:5
Answer:
Step-by-step explanation:
5:8
Tim can swim 150 meters in 6 minutes.
How long will it take him to swim 400 m?
Answers
Answer:
Step-by-step explanation:
150/6 = 25. that is your unit rate
400/25= 16 minutes
I need help This assignment is due Tomorrow let’s go
Answers
2. B
3. C
4. ?
5. B
6. A C F
Answer:
1. C 25 because it's the opposite
2. B. 2 because there is only two negative
3. B. The opposite of 2 1/2 that will be negative
4. I can't see
5. C because if it had [5 3/4] it will be -5 3/4
6. A, C, and F
7. I don't know
A field hockey field is rectangular. Its width is 54.88 meters, and its perimeter is 289.76 meters. Find the length of the field.
Answers
Answer:
90 PLEASE MARK ME BRAINLLIEST
Step-by-step explanation:
289.76-54.88-54.88=180/2=90
Perimeter is the sum of the length of the sides used to make the given figure. The length of the field is 90 meters.
What is the perimeter?Perimeter is the sum of the length of the sides used to make the given figure.
Given that the width of the field is 54.88 meters and the perimeter of the field is 289.76 meters. Therefore, we can write the perimeter as,
Perimeter = 2(Length + Width)
289.76 meters = 2(Length + 54.88 meters)
289.76meters / 2 = Length + 54.88 meters
144.88metes = Length + 54.88 meters
Length = 144.88 meters - 54.88 meters
Length = 90 meters
Hence, the length of the field is 90 meters.
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help me please someone i’m stressing out rn :(
Answers
Answer:
Step-by-step explanation:
b i hope thate helps
Which of these graphs represents a function?
2
5-4-3-2-1,
2
5
15-4-3-2-1,
4
2
3
4
w.
x
y
ST
ST
1
-5-4-3-2-1.
1
45
5-4-3-2-
2
Y
Z.
2020 Edimentum. All rights reserved.
Answers
The correct graphs which represents a function is shown in ''Option B.''
What is mean by Function?A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Given that;
There are four graphs are shown in image.
Now, We can check all the graph by vertical line test.
If the vertical line cut only at one point of the graph, then, it shows the function.
If the vertical line cut more than one point of the graph, then, it cannot shows the function.
Hence, By vertical line test,
The correct graphs which represents a function is shown in Option B.
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simplify \sqrt{25a^2}
Answers
Answer:
Step-by-step explanation:
Sqrt(25a^2)
Sqrt((5a)^2)
5a