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Related Questions
If cos O =-2/5 and tan O > 0 what is the value of sin O
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Answer:
negative square root 21 over 5.
Step-by-step explanation:
mathGiven that for an angle ,
We are to find the value of
We know that
Cosine is negative in Quadrant II and Quadrant III.
Tangent is positive in Quadrant 1 and Quadrant III.
So, the given angle lies in the Quadrant III.
We will be using the following trigonometric identity:
We have
Since the angle lies in Quadrant III and sine is negative in that quadrant, so
Thus, option (B) is correct.
For smart ppl in math.
Answers
Answer:
It's all explained below :)
Step-by-step explanation:
So first we need to go to a graphing calculator! I usually use Desmos to do my stats stuff. You'll wanna head to their linear regression calculator (I can't add a link, but just google Desmos linear regresion and it'll pop up).
Put the points into the table. Lines of best fit have the equation y1 ~ bx1+a, so put that in the box right below the table, where you see another equation already written- just edit it. We see all the other numbers listed below that, so we know that b=-0.894 and a=13.599, so the line of best fit is -0.9x + 13.6 = y when you round those numbers.
The correlation coefficient is represented by the letter r. r is shown below as well, and is -0.964. Strong correlations are represented by a value close to the number 1, so this is strong, as it's very close. It is negative because of its sign. Correlation coefficients don't go over the number 1 or below -1, so be careful. I hope this was helpful! If you need any more clarification just let me know.
What is the product of twenty hundredths and sixty-five thousandths
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Answer:
0.013
Step-by-step explanation:
The product of twenty hundredths and sixty-five thousandths is 0.013.
Given that, the product of twenty hundredths and sixty-five thousandths.
What is the product of two fractions?The product of two fractions is the product of the numerators and the product of the denominators.
Product of two fractions = Product of their denominators / Product of their numerators.
Twenty hundredths = 20/100
Sixty-five thousandths = 65/1000
Product = 20/100 × 65/1000
= 2/10 × 65/1000
= 130/10000
= 13/1000
= 0.013
Therefore, the product of twenty hundredths and sixty-five thousandths is 0.013.
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Simplify the expression: 6/3(13−18)+2^4÷6
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Answer:
-7.333
Step-by-step explanation:
Answer:
-7 1/3
Step-by-step explanation:
Donavon and Joshua are both weight lifting to gain weight. Donavan weighs 120 lbs and he gaining 10 lbs each month and Joshua weighs 150
Ibs and is gaining 4 lbs each month. How many months will it take for Donavan to weigh the same as Joshua?
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Answer:
4 months
Step-by-step explanation:
What is the domain and range of the equation y = 6/(x+2) + 4?
Answers:
Real numbers except x = -2 and Real numbers except y = 6
Real numbers except x = 2 and Real numbers except y = 4
Real numbers except x = -2 and Real numbers except y = 4
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Answer:
.2 sdfgghh 45
Step-by-step explanation:
PLEASE I NEED HELP!! what are two ways that you can tell that two ratios form a proportion? i really need to pass this test to get my grades up, I'm not trying to cry my whole winter break.
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Answer:
A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five."
Step-by-step explanation:
Answer:
A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fraction in it’s simplest form. Another way is to see if the numbers in the ratios are factors or multiples of each other. For example, 10:5 and 30:15. 10:15= 10/5 and 30:15= 30/15. Then you put it in simple form. 10/5 = 2 and
30/15 = 2. Therefore 10:5 and 30:15 are proportional.
Hope this helps :)
What's the answer
BchbhbdbhdjbcdjcnjcjndJncjjj
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Explanation:
WILL GIVE BRAINLIEST
Which of the following is the function rule for the graph of the sin function from 0 to 2pi if the amplitude is 1.5 and the period is (pi/2)?
A. 1.5sin(pi /4)x
B. 1.5sin2x
C. 1.5sin4x
please help fast, will give brainliest
Answers
Answer:
1.5sin4x
Step-by-step explanation:
I just answered this question and got it right.
The function is 1.5sin(4x).
What is sin function?The ratio of the length of the opposite side to that of the hypotenuse in a right-angled triangle is the sine function in trigonometry. A right triangle's sides or unknown angles can be found using the sine function.
Given the sine function from (0, 2π), and amplitude is 1.5, the period is π/2
sine function in general form
y = a sin (b (x – h)) + d
where a = amplitude, b= period
h is the phase shift, and
d is the vertical displacement.
according to question, This function currently has no phase shift, since
h = 0, and no vertical displacement, since d = 0
equation is y = a sin b x
and b is ratio of normal period to desired period
b = 2π/(π/2)
b = 4
substitute the value of a and b in equation we get,
y = 1.5 sin (4x)
Hence the sin function from 0 to 2pi is y = 1.5 sin (4x).
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find the slope of this line
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Answer:
slope is 1
Step-by-step explanation:
0--2=2
1--1=2
2/2-1
write a paragraph about the activites that you mostly do in holidays
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Are spending time with my family and friends. During Christmas time i help my family cook a meal a wrap presents, Any other time i would usually just go out of state and/ or spend time with friends. Something i also enjoy doing is going shopping and finding new things.
The regression equation for change in temperature, y, to amount of rain, r, is given by ŷ = 0.2 − 1.4r. On Monday, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees. Find and interpret the residual.
2.66. The regression line overpredicts the temperature change.
2.66. The regression line underpredicts the temperature change.
1.94. The regression line underpredicts the temperature change.
−1.94. The regression line overpredicts the temperature change.
−3.02. The regression line underpredicts the temperature change.
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Given:
The regression equation for change in temperature, y, to amount of rain, r, is given by
[tex]\hat{y}=0.2-1.4r[/tex]
The observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.
To find:
The residual and interpret it.
Solution:
According to the question, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.
So, the actual value is 2.3 degrees.
Put r=0.4 in the given equation, to find the predicted value.
[tex]\hat{y}=0.2-1.4(0.4)[/tex]
[tex]\hat{y}=0.2-0.56[/tex]
[tex]\hat{y}=-0.36[/tex]
We know that,
Residual = Actual value - Predicted value
[tex]Residual=2.3-(-0.36)[/tex]
[tex]Residual=2.3+0.36[/tex]
[tex]Residual=2.66[/tex]
Residual is positive because predicated value is less than the actual value.
So, the regression line underpredicts the temperature change.
Therefore, the correct option is B.
WILL GIVE BRAINLIEST
Answers
Answer:
the answer is A
Step-by-step explanation:
Nathan rolls a number cube and records the result of each roll in the table.
Number Cube
Number Rolled
Frequency
1
11
2
16
3
14
4
20
5
12
6
17
Which statements below represent the situation? Selet three options.
The relative frequency of rolling a 4 is StartFraction 2 over 9 EndFraction.
The experimental probability of rolling a 3 is greater than the theoretical probability of rolling a 3.
The experimental probability of rolling a 2 is greater than the theoretical probability of rolling a 2.
The relative frequency of rolling a 5 is StartFraction 2 over 13 EndFraction.
The experimental probability of rolling a 1 is less than the experimental probability of rolling a 6.
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The relative frequency of rolling a 4 will be 2/9. Then the correct option is A.
How to find the relative frequency?Relative frequency is the ratio of the considered subgroup's count to the total count.
Nathan rolls a number cube and records the result of each roll in the table.
Number Rolled Frequency
1 11
2 16
3 14
4 20
5 12
6 17
Total = 90
Then the relative frequency of rolling a 4 will be
P = 20 / 90
P = 2/9
Then the correct option is A.
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Answer:
its A, C, D
Step-by-step explanation:
tested for really
Holly has $225 to spend at the shopping mall. She decides to buy sweaaters and pants with her money. Sweaters cost $45 each and pants cost $25 each. The equation 45s + 25p = 225 represents this situation.
If Holly buys 3 sweaters, what is the greatest number of pants she can buy?
Answers
Answer:
3 pairs of pants
Step-by-step explanation:
Plug 3 in for s. Your equation should now be 45(3) +25p=225
Then distribute 135+25p=225
Subtract 25p=90
Divide p=3.6
Since you cannot buy half of a pair of pants you need to round down to three
Write an expression and solve. Cole wants to buy a shirt for $25. The sales tax
is 8%. How much will the shirt cost?
Show your work:
A. $27
B. $33
C. $45
D. $227
Answers
Answer:
A
Step-by-step explanation:
8% of 25 is 2 so 25 + 2 =27
Pentagon JKLMN is similar to pentagon UVWXY.
What is the length of WX?
18
15
10
N
(not drawn to scale)
A 15
13
12
O 18
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9514 1404 393
Answer:
C. 12
Step-by-step explanation:
Corresponding sides are proportional. Sides with the same mark are the same length.
WX/XY = LM/MN = LM/KJ
WX/10 = 18/15
WX = 180/15 . . . . multiply by 10
WX = 12
THIRTY POINTS Will mark branliest if right.
Which expression is equal to the expression below?
(2 x 6)^4
A. 2^4 x 6^4
B. 8^4
C. 4 x (2 x 6)
D. 2 x (6)^4
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Answer:A
Step-by-step explanation:A
[tex]I need help can someone help? I’m really stuck and it’s so really soon! I need to show my work[/tex]
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Does anyone know thissss
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God bless you
Please helppp wil mark brainliest
Answers
Answer:
2,3
Step-by-step explanation:
2x + 8 = 2(x + 4)
(Variables Vanish)
show stepss! due in 5 min!<3
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Answer:
0
Step-by-step explanation:
2x+8=2(x+4)
2x+8=2x +8
2x-2x=8-8
0=0
∆ABC has vertices at A(12, 8), B(4, 8), and C(4, 14). ∆XYZ has vertices at X(6, 6), Y(4, 12), and Z(10, 14). ∆MNO has vertices at M(4, 16), N(4, 8), and O(-2, 8). ∆JKL has vertices at J(14, -2), K(12, 2), and L(20, 4).
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Answer:
First is ABC and MNO, second is rotation I believe.
Step-by-step explanation:
On god I will mark you as brainliest
Answers
x - 4 = 19
Solve the equation
Solution: x = 23
WHY DO I FEEL EXTRA NICE- FFTVJHFTYSDEV
Answers
Answer:
cause u are nice
Step-by-step explanation:
The Jones family was one of the first to come to the US. They had 5 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had:
a)at least 2 girls
b)at most 4 girls
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Find the slope of the line. Enter your answer as
a number, fraction, or undefined. Reduce to
lowest terms if necessary.
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Answer:
slope is 2/4 or 1/2 simplified
Step-by-step explanation:
Answer: 1/2
Step-by-step explanation:
What is the slope of the graph?
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1/1
Or 1
Rise 1
Run 1
Yall know the rate of change?
Answers
Answer:
M=-3
Step-by-step explanation:
Slope:
y2-y1/x2-x1
-3-3/1+1=6/-2=-3
TWENTY PIONTS!!!!! what completes the prime factorization of 315
Answers
Answer:
Positive Integer factors of 315 = 3, 9, 5, 45, 7, 315 divided by 3, 3, 5, 7, gives no remainder. Step-by-step explanation: