Find the angle between u=〈−2,5〉 and v=〈5,2〉 to the nearest tenth of a degree.
Answer:
angle is 1°
Step-by-step explanation:
[tex] \cos(u \: v \: ) = \frac{u \times v}{ |u| \times |v| } [/tex]
If you live in Portland, you live in Oregon. Cara does not live in Oregon. Therefore, Cara does not live in Portland.
a.) Overlapping Sets
b.) Subsets
c.) Disjoint Sets
Please somebody help me
A school raised $4,589 in a magazine sale. Mr. Simmon's class raised 1 of the school's total. 100 How much money, in dollars, did Mr. Simmon's class raise? Enter the number in the box.
Answer:
Money raised by Mr. Simmons class = $ 45.89
6 x 10^4 how many times as great as 3 x 10^7
Answer:
one
Step-by-step explanation:
uppose a large telephone manufacturer has a problem with excessive customer complaints and consequent returns of the phones for repair or replacement. The manufacturer wants to estimate the magnitude of the problem in order to design a quality control program. How many telephones should be sampled and checked in order to estimate the proportion defective to within 4 percentage points with 83% confidence
Answer:
The answer is "294.2075".
Step-by-step explanation:
Given:
[tex]\hat{p} = 0.5 \\\\1 - \hat{p} = 1 - 0.5 = 0.5\\\\E = 4\% = 0.04\\\\[/tex]
At [tex]83\%[/tex] confidence level the z is ,
[tex]\alpha = 1 - 83\% = 1 - 0.83 = 0.17\\\\\frac{\alpha}{2} = \frac{0.17}{2} = 0.085\\\\Z_{\frac{\alpha}{2}} = Z_{0.085} = 1.3722\\\\n = (\frac{Z_{\frac{\alpha}{2}}}{E})^2 \times \hat{p} \times (1 - \hat{p})\\\\[/tex]
[tex]= (\frac{1.3722}{0.04})^2 \times 0.5 \times 0.5\\\\= (34.305)^2 \times 0.5 \times 0.5\\\\= 1,176.83 \times 0.5 \times 0.5\\\\= 1,176.83 \times 0.25\\\\=294.2075[/tex]
probability problem Plz help
m∠A+ m∠B = ? How do you know this?
Answer:
Step-by-step explanation:
If m∠A + m∠B = m∠B + m∠C, subtract m∠B from both sides [ subtraction property of equality ].
We get that m∠A = m∠C and by the symmetric property of equality, m∠C = m∠A
A wind machine used to generate electricity has blades that are 10m in length. The propeller is rotating at 5 revolutions per second. Find the linear speed of the tips of the
blades. Express your answer in terms of n and using units meters per second.
A. 120n m/sec
B. 60n m/sec
C. 100n m/sec
D. 30n m/sec
Answer:
[tex]
\mathbb{ ANSWER }[/tex]
C. 100n m/sec
8.
Find the equation to the line passing through the point of intersection of the lines
3x + 14 =
2y and x + y = 6, and is also perpendicular to the line 5x =
6y + 1.
9514 1404 393
Answer:
30x +25y = 148
Step-by-step explanation:
We can use substitution to find the point of intersection of ...
3x +14 = 2yx + y = 6Using the second equation, we can write an expression for y:
y = 6 -x
Substituting that into the first equation gives ...
3x +14 = 2(6 -x)
3x +14 = 12 -2x . . . . . eliminate parentheses
5x = -2 . . . . . . . . . . . add 2x-14
x = -0.4 . . . . . . . . . divide by 5
y = 6 -(-0.4) = 6.4
__
Now, we want an equation for a line through the point (-0.4, 6.4) that is perpendicular to 5x = 6y+1
The perpendicular line will have the coefficients swapped with one of them negated. The constant will accommodate the given point.
6x = -5y + c
6(-0.4) +5(6.4) = c = 29.6
The perpendicular line can be written ...
6x = -5y +29.6
In standard form, the equation is ...
30x +25y = 148
Heyy Answer please and explain
Answer: V=37.5 cm³
Step-by-step explanation:
Formula
V=(πr²h)/3
Given
r=5/2=2.5 cm
h=6 cm
Solve
V=(πr²h)/3
V=(π(2.5)²(6))/3
V=(π(6.25)(6))/3
V=37.5π/3
V=37.5(3)/3
V=37.5 cm³
Hope this helps!! :)
Please let me know if you have any questions
I REALLY NEED HELP with this statistics question, it would mean a lot if someone could answer it, i will give you brainliest for the correct answer!!!! :)
Answer:
In Data Set A mean , standard deviation are better measure of center as they give more information about the center of data.
In Data Set B mean , standard deviation are better measure of center as they give more information about thecenter of data.
Step-by-step explanation:
Data Set A Data Set B
1 3
3 5
3 5
2 4
4 6
0 1
4 6
3 6
3 6
5 6
2 5
Mean of Set A= 1+3+3+2+4+0+4+3+3+5+2/ 11= 30/11= 2.7272
Median of Set A= 0,1,2,2,3,3 ,3,3,4,4,5
Median ( the middle value)=3
Mode( the repeated value)= 3
Quartiles
1st Quartile= n/4 value= 30/4= 7.5 which lies between 4th and 5th value
3rd quartile= 3n/4= 90/4= 22.5 which lies between 10 th and 11th value
Range= highest value- lowest value= 5-0=5
Standard Deviation = 1.354
In this mean ,median, mode and standard deviation are better measure of center as they give more information about the data.
The range and quartiles are better measure of spread.
Mean of Set B= 3+5+5+4+6+1+6+6+6+6+5/11=53/11=4.81818
Median of Set B= 1,3,4,5,5,5,6,6,6,6,6
Median ( the middle value)= 5
Mode ( the repeated value)= 6
Quartiles
1st Quartile= n/4 value= 53/4= 13.25 which lies between 4th and 5th value
3rd quartile= 3n/4= 159/4= 39.75 which lies between 9 th and 10 th value
Range= highest value- lowest value=6-1= 5
Standard Deviation= 1.5266
In this mean , standard deviation are better measure of center as they give more information about the data.
The median mode quartiles and range are better measure of spread.
A smaller standard deviation indicates that most of the observations are close to the mean while a large value implies that the observations are scattered widely about the mean.
The quartiles must be having values near 25% and 75% of the data.
The center gives a value which is located around the center
Mean: It gives the average value.
Median:It is the middle value when data is ordered from least to greatest.
The spread gives the value showing where the data may variate.
Range: Total spread is given by the range.
Standard deviation: How far a data point is from the mean.
Can someone please help me
Answer:
the mid point is 6,3
Step-by-step explanation:
the mid point is 6,3
Simplify 8 . 3 . X
A.13x
B.24x
C.22x
D.48x
Answer:
D. 48x
Step-by-step explanation:
sana nakatulong
r = 7 cm can someone help me find the answer?
Answer:
Answer to what exactly?
A line with slope 3 passes through the point (0,8). What is the y-coordinate of the point on the line with x-coordinate 4?
help me please I will give brainliest!
Answer:
A. y = 3x + 3
Step-by-step explanation:
The slope is 3 and the y-intercept is 3. Therefore, answer A is correct
help please and thank you
Omg someone anybody help!! Please
Answer:
y= 2x
Step-by-step explanation:
y= mx+b
The slope (m) is 2/1 or just 2.
The y-intercept (b) is 0.
y= 2x
The function f(x) is cubic function and the zeros of f(x) are -5,3 and 6. The y intercept of f(x) is 360. Write the equation of the cubic polynomial in standard form
x + 6.62 = 8.53
x = _
Answer:
x = 1.91
Step-by-step explanation:
x + 6.62 = 8.53
x + 6.62 - 6.62 = 8.53 - 6.62
x = 1.91
please help!!!!!!!!!!!!!!!!!!!
Answer:
I don't know definitely, but in guessing A) 2X+3Y=-25 x-y=5
Step-by-step explanation:
2 times more than X, means that whatever x is, its multiplied by 2, giving 2X, also making it the larger number, even if y is a smaller number.
For example: x=5 2x5= 10, and y=3 3x3= 9
Im sorry if its wrong
Chang is playing a game of chance in which he tosses
Answer:
3,405
Step-by-step explanation:
Find the perimeter of the figure below, in meters.
9.9 m
9.9 m
12 m
12 m
12 m
12 m
12 m
12 m
3.2 x 1.4 =
help help help pls
Answer:
4.48
Step-by-step explanation:
Answer:
4.48
Step-by-step explanation:
How many favorable outcomes will there be for spinning the same color twice?
Answer:
3 favorable outcomes
There are three paths that end up with spinning the same color twice
Answer:
should be 3
Step-by-step explanation:
You can draw a quadrilateral with two sets of parallel lines and no right angles.
True
False
Answer:
The correct answer is true.
Step-by-step explanation:
You can draw a quadrilateral with two sets of parallel lines and no right angles, since a parallelogram lines up exact with the requirements.
Hope this helps! Have a great day :)
use the graph for problems 14 and 15
9514 1404 393
Answer:
14. C
15. C
Step-by-step explanation:
14. The function is entirely in quadrants I and II, so the leading coefficient is positive. This eliminates choices A and B.
The horizontal asymptote is 0, not -1, eliminating choice D.
The curve is best described by the equation of choice C.
__
15. The domain and range of an unadulterated exponential function are ...
domain: all real numbers; range: y > 0 . . . . matches choice C
A plumber charges a customer a one-time service fee of $79, $62 per hour for labor, and a surcharge of $15 per hour due to the call being an emergency.
Write an expression to represent the total charges for the plumber in two different ways. Let h represent the number of hours the job takes.
Answer:
As a plumber charges a customer a one-time service fee of $ 79, $ 62 per hour for labor, and a surcharge of $ 15 per hour due to the call being an emergency, to write an expression to represent the total charges for the plumber in two different ways, with H representing the number of hours the job takes, the following equations should be formulated:
Option 1:
Fixed amount + amount per hour multiplied by the number of hours + emergency amount multiplied by the number of hours = X
79 + 62H + 15H = X
Option 2:
Fixed amount + sum of emergency amount and the amount per hour multiplied by the number of hours = X
79 + ((62 + 15) x H) = X
The volume of the polyhedron is ______ cm3.
Answer:
133.07 cm^3
Step-by-step explanation:
the polyhedron is a cone
volume of a cone =n r^2(h/3)
n = 22/7
r = radius
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
A radius is half of the diameter
Radius = 5/2 = 2.5 in
h = height
(2.5^2 x 8) x 1/3 x 22/7 = 52.39 in^3
we need to convert inches to cm
1 in = 2.54 cm
2.54 x 52.39 = 133.07 cm^3
you measured the weight of every apple in a box and found the mean weight to be 13.2 ounces and the standard deviation to be 2.7 ounces. you then discover that your scale was weighing every apple as being 3 ounces heavier than their actual weight. what are the actual mean and standard deviation?
