Answer:
Step-by-step explanation:
P(Q')=1-P(Q)=1-0.45=0.55
Answer:
P(Q')=1-P(Q)=1-0.45=0.55
Step-by-step explanation:
You and your friend enter a drawing with 3 different prizes. A total of 11 people entered the drawing, and prizes are awarded randomly.
There are 990 ways to award the prizes.
What is the probability that you win first prize and your friend wins second prize?
A. [tex]\frac{1}{11}[/tex]
B. [tex]\frac{9}{990}[/tex]
C. [tex]\frac{1}{990}[/tex]
D. [tex]\frac{11}{990}[/tex]
The probability that you win first prize and your friend wins second prize is given as follows:
B. 9/990.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
The total number of outcomes is given as follows:
990.
The number of desired outcomes is of 9, as:
You win the first prize.Your friend wins the second prize.There are 11 - 2 = 9 people that can win the third prize.Hence:
1 x 1 x 9 = 9.
Meaning that the probability is of:
p = 9/990.
More can be learned about probability at https://brainly.com/question/24756209
#SPJ1
4/1 divided by 3/4 help asap!!!
Answer:
3
Step-by-step explanation:
since 4 is made of four 1s 3 of them is 3
Question 5
A round spinner is divided into five sections, where the sections do not have the same size. Using the measure of the interior angles, the probability of the spinner landing on any individual space on
a spin is calculated and given in the table.
©
1
3
4
5
Section
Probability
2
0.20
0.40
0.20
0.15
0.05
A statistics student is asked to test the integrity of the spinner using a chi-square goodness-of-fit test. What is the minimum number of times the spinner should be spun to conduct this test?
Answer:
The correct answer is 100
i need help really please
Answer:
B. 2, 3, 4, 5
Step-by-step explanation:
Whatever number you plug in the blank, the number it creates must be in between 0.362 and 0.321, because it's sorted from greatest to least and it is in the middle
The only option that works is B. The other options either don't have all possible numbers or have some that don't fit the boundaries.
The product of p and 5 write your expression here
The sum of 6 and x divided by 12 write your expression here
8 less than F write your expression here
The quotient of 15 and C added to the product of m and 2 write your expression here
Answer:
first one - 5p
second one - 6 + x/12
third one - f - 8
fourth one - 2m + 15/c
Step-by-step explanation:
A professor gives a multiple choice exam where each question has four choices. The professor decides not to count a question against students if the class as a whole does worse on the question than they would have done simply by guessing. That is, if significantly less than 25% of the students answer a question correctly, then that question won't count against them.
Let p represent the proportion of students that would correctly answer the question.
Which of the following is an appropriate set of hypotheses for such a significance test?
ANSWER: H0:p=0.25
Ha:p<0.25
The hypotheses pair for the test of significance for the given situation is given as:
[tex]H_0: p \geq 0.25\\H_1: p < 0.25[/tex]
How to form the hypotheses?There are two hypotheses. First one is called null hypothesis and it is chosen such that it predicts nullity or no change in a thing. It is usually the hypothesis against which we do the test. The hypothesis which we put against null hypothesis is alternate hypothesis.
Null hypothesis is the one which researchers try to disprove.
For the given case, the test is being done to check if there is significance or not.
The null hypothesis would assume that the score is not significantly less than 25%, as null hypothesis stays with nullity or denial of what is being prominently tested, which is the fact that students performed significantly less than 25%
Thus, we get null hypothesis as: [tex]H_0 : p \geq 25\% = 0.25[/tex] (not significantly less than 0.25, so either proportion is 0.25 or bigger than 0.25)
Alternate hypothesis is the hypothesis statement we want to test, which is the statement that students performed significantly less than 25%.
or
Alternate hypothesis: [tex]H_1 : p < 0.25[/tex]
Thus, the pair of hypotheses for the given situation is given as: [tex]H_0: p \geq 0.25\\H_1: p < 0.25[/tex]
Learn more about null and alternate hypothesis here:
https://brainly.com/question/18831983
If you apply the changes below to the
quadratic parent function, f(x) = x^2
what is the equation of the new
function?
• Shift 7 units right.
• Shift 3 units up.
Answer: Step-by-step explanation:
f(x) = (x-7)^2+3
Ryan received $7 more than Ben every week.
Both of them saved $50 per week and spent the rest.
When Ryan had spent $56, Ben had only spent $28.
How much money did Ben receive every week?
Find the sector are. Round your answer to the nearest tenth.
A. 254.5 m2
B. 93.5 m2
C. 848.2 m2
D. 14.1 m2
im almost sure its a ............
What is the surface area Round your answer to the nearest tenth and use 3.14 for pi Capsule Surface Area ? squared millimeters
Answer:
648.8 mm^2
Step-by-step explanation:
total surface area
=surface area of sphere + curve surface of cylinder
=4πr^2+2πrh
=4(3.14)(8.4/2)^2+2(3.14)(8.4/2)(16.2)
=648.8 mm^2 (nearest tenth)
its in the screenshot
Step-by-step explanation:
Morgan 12 ras 12× 3 black Total 12×4 or 12 + 3 × 12 = 48 berries
Kendra picked 9 × Morgan's Total
Kendra picked (12 +(3 × 12)) × 9 = 48 × 9 = 432 berries
A bakery makes a $5 profit for each cake it sells it makes a $6 profit
Answer:
Step-by-step explanation:
?
Find the volume of the composite solid.
4 ft
3 ft
6 ft
Answer:
72 ft³
Step-by-step explanation:
If this is a rectangular prism
v = 4 * 3 * 6
v = 72 ft³
an outdoor pavilion has 30 rows with 20 seats in the first row each row thereafter has 6 more seats using a formula find the total of seats at the pavilion
Find the greatest common factor (GCF) of the set of numbers.
21, 30, 44
Step-by-step explanation:
Answer attached :)
Hope it helps :D
A high school student volunteers to
present a report to the administration about the types of lunches students prefer.
He surveys members of his class and records their choices. What type of sampling did the student use?
systematic random sampling
voluntary sampling
• convenience sampling
stratified sampling
Answer:
convenience sampling
Step-by-step explanation:
Which situation can be modelled by tossing a coin twice?
a) Choosing 1 of 4 partners in a square dance.
b) Choosing answers for 4 true/false questions.
c) Choosing which of 16 teams will win a tournament.
d) Picking 1 of 6 math teachers.
Answer:
I personally think it is b. because there are only two choices, true or false. The answers are for 4 questions so,
2/4 = 1/2
Your gas company charges you a standing charge of 9 pence per day and 2 pence per kilowatt-hour (KWh).
In the last quarter (90 days) you used 500 units (m3) of gas. 1 unit is approximately 11.1KWh.
How much is your bill for the last quarter?
Answer:
$8.10 + 55.50 x $2 KW
= 8.10 + 111.00 = $119.10
Step-by-step explanation:
d = days and x = kw/h
9d = 2x = 9(90) = 500m3
1 unit m3 = 11.1 kwh
We rewrite
9(90) = 500 x 11.1
500 x 11.1 = 5550 KW
0.09 x 90 = 5550 KW
8.1 + 5550 x 0.02
= 8.1 + 111 KW
= 119.10
= $119.10
9. The school record for the most points scored in a football season
is 85. Lawrence has 44 points so far this season. How many more
points does he need to break the record?
Answer:
42 More Points
Step-by-step explanation:
Subtract the record with Lawrence's current amount to get 41. BUT, we are not done, we want to BREAK the record, not just reach it so we need to add one to get our answer of 42.
answer 7 and 8 for 16 points
9514 1404 393
Answer:
7) 42 yd²
8) 32 in²
Step-by-step explanation:
Put the given numbers in the appropriate area formula and do the arithmetic.
__
7) The area of a triangle is given by the formula ...
A = 1/2bh . . . . . where b is the base length and h is the height
A = 1/2(12 yd)(7 yd)
A = 42 yd²
__
8) The area of a parallelogram is given by the formula ...
A = bh
A = (8 in)(4 in)
A = 32 in²
Due tomorrow! Please
Find the area of a trapezoid with bases of 6cm and 8cm and height of 12cm
Answer:
84cm
Step-by-step explanation:
have a good day! :)
Answer:
area = 84 cm
Step-by-step explanation:
[tex]A=\frac{a+b}{2}h[/tex]
Convert 0.6 radians to degree measure.
Round your answer to the nearest hundredth.
Choose the statement below that describes the relationship between a circles diameter and circumference. A. Circumference times diameter is always π. B. Diameter divided by circumference is always π. C. Circumference divided by diameter is always π. D. There is no relationship between circumference and diameter.
Answer:
C
Step-by-step explanation:
Find the area of the regular octagon
Answer:
8 is the answer of this question
Find the 2nd term in expansion of (4-2x)⁴ Show steps
[tex]\huge\mathfrak\pink{Answer}[/tex]
(4 - 2x) ²
[tex]\bold{(4-2x)^{4} }[/tex]
[tex]\bold{[(4-2x)^{2}]^{2} }[/tex]
[tex]\bold{(4-2x)^{2}(4-2x)^{2} }[/tex]
Belinda builds a rectangular prism that is 2 cubes long, 3 cubes wide, and 2 cubes tall. Each dimension of April's rectangular prism is twice as many cubes as Belinda's prism. What is the volume of April's prism? Use an equation to show your work. and no links please
Answer:
96 cubes
Step-by-step explanation:
Belinda's prism is 2x3x2, which means April's prism is 4x6x4, and 4*6*4= 96
For a particular 5 hours journey, Alex travelled at an average speed of (2x + 5) km/h for
the first 2 hours. He then travelled at an average speed of (3x - 5) km/h for the last 3
hours to complete his journey.
(a) Write down an expression, in terms of x, to represent the distance travelled by
Alex in the first 2 hours of his journey
Answer:
4x + 10
Step-by-step explanation:
Given
Let
[tex]t = time[/tex]
[tex]s = speed[/tex]
So:
[tex]t = 2; s = (2x +5)[/tex] --- first 2 hours
[tex]t = 3; s = (3x -5)[/tex] --- last 3 hours
Required
Distance covered in the first 2 hours
Distance (d) is calculated as:
[tex]Distance = speed * time[/tex]
i.e.
[tex]d = s * t[/tex]
For the first 2 hours, we have:
[tex]t = 2; s = (2x +5)[/tex]
So:
[tex]d = (2x + 5) * 2[/tex]
Open bracket
[tex]d =2x * 2 + 5 * 2[/tex]
[tex]d =4x + 10[/tex]
Hence, the distance covered in 4x + 10
What is the value of x in the equation 10 = 3/5 x + 1?
A. 6
D. 16
B. 7 C. 15
Solve for x
9(x - 2) = 18
Ox=0
OX= 20/9
O x = 16/9
Ox=4
Answer:
x=4
Step-by-step explanation:
Multiply 9 to x and -2
You get 9x-18=18
add 18 to both sides
you get
9x=36
divide 9 from both sides
x=4
=> 9x - 18 = 18
=> 9x = 18 + 18
=> 9x = 36
=> x = 36/9
=> x = 4 (Ans)