Answer:
4
Step-by-step explanation:
Got it right on brainly
The blue marble should be worth 8 points , Option C is the answer.
What is Probability ?Probability is the likeliness of an event to happen.
Let the random variable is x ,
probability mass function is f(x) = P(X = x)
then The expectation of a random variable is determined by
E(x) = ∑(i =1 to n) ( [tex]\rm x _i *f(x_i)[/tex] )
If the game has to be fair , the number of points that one can loose should be equal to the number of points one can gain.
Probability of getting any color marble = 1/5 = 0.2
Let x be the total points scored in a game
and b be the number of points for blue coloured marble
Probability of choosing non-blue marble = 4/5 (points =-2)
Probability of choosing blue marble = 1/5 (points = b)
E(x) = -2 * (4*5) + b* (1/5)
The expectation will be zero as the total points balance out
0 = -8/5 + b/5
b = 8
Therefore the blue marble should be worth 8 points , Option C is the answer.
To know more about Probability
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help me find the equation of straight line (2,3)
You have 182 g of a radioactive kind of iodine if it's half life is 13 hours how much will be left after 52 hours
Answer:
0.7g
Step-by-step explanation:
52/13 = 4 half life
182/4 = 45.5
45.5 / 4 = 11.35
11.35 / 4 = 2.8375
2.8375 / 4 = 0.709g
Answer this for me plz :))
Complete the sentence the length of a segment from a vertex to the centroid is the length of the median from that vertex
Answer:
The length of a segment from a vertex to the centroid is
“ 2/3 “ the length of the median from that vertex
Hence, the length of the median from that vertex is [tex]\frac{2}{3}[/tex].
What is the vertex?
The common endpoint of two or more rays or line segments Vertex typically means a corner or a point where lines meet.
Here given that,
The length of a segment from a vertex to the centroid is the length of the median from that vertex.
So, the length of a segment from a vertex to the centroid is [tex]\frac{2}{3}[/tex] which is the median of that vertex.
Hence, the length of the median from that vertex is [tex]\frac{2}{3}[/tex].
To know more about the vertex
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I need netflix recommendations please. I've already watched Outerbanks, Riverdale, Grey's Anatomy, 13 Reasons Why, Jane the Virgin, and Anne with an E, Greendale Academy, and I believe thats all the TV shows I've watched. (I'll take movie recommendations to)
Hope this helps there my fav
Favorite of all time
New Girl
Second Favorite of all time
Flowers
Third Favorite of all time
Fuller House
Answer:
I mean no one likes the movies I like so cant help u
Step-by-step explanation:
4x = 2(x-5)-2 can you solve please
Answer:
x = -6
Step-by-step explanation:
4x = 2(x-5)-2
2 * x = 2x
2*-5 = -10
4x = 2x - 10 -2
4x = 2x - 12
4x - 2x = 2x
2x = -12
-12/2 = -6
x = -6
Davis bought 10 cookies for $6.50. At this rate how much would it cost to buy 48 cookies?
Answer:
$31.20
Step-by-step explanation:
Use proportions:
10/6.50 = 48/x
Cross multiply:
6.50*48 = 312
312/10 = 31.20
What is the sum of 1.57 and 6.88?
Answer:
8.45
Step-by-step explanation:
Find the sum by adding the two numbers together:
1.57 + 6.88
= 8.45
So, the sum is 8.45
Mrs. Reed collects shells. Each shell in her collection weighs about 4 ounces. Her collection weighs about 12 pounds in all. About how many shells are in Mrs. Reed's collection?
Answer:
There are about 48 shells in Mrs. Reeds collection.
Step-by-step explanation:
There are 16 ounces per 1 pound.
4 ounces per shell.
16 x 12 = 192 ounces
192 ounces divided by 4 = 48
How many more fans like football than basketball and soccer combined?
A. 40 more fans
B. 30 more fans
C. 20 more fans
D 10 more fans
PLEASE HELP
what does QS equal
Answer:
22
Step-by-step explanation:
QS =2×11 = 22
__________
Help me please! Its due soon
Answer:
1(a) is TRUE
.. not sure about the rest :( sorry
3
What is the difference of
21
?
4
Answer:
The difference is 4–3. If you want the difference between 3 and -4, then the difference is 7.
Step-by-step explanation:
Your math test scores
are 81%, 77%, 79%,
83%, and 70%. Which
measure of central
tendency should tell
your parents to make
your math test scores
seem highest?
Answer:
Median
Step-by-step explanation:
Mean: (81+77+79+83+70)/5 = 78
Median: 70, 77, 79, 81, 83
Mode: None
Therefore, the median is the better measure of central tendency you should tell your parents to make your math test scores seem highest.
Answer:
if you choose mean, your score would be 78 because 81+77+79+83+70=390, divide that by 5 and you get 78, your median would be the 79, and if you choose mode, you really couldn't calculate it since there is only one of each number, therefore the best choice is the median of 79%
Step-by-step explanation:
Chris is planning to attend a public university after he graduates from high school in 2 years. He is devising a plan to save money each month to help with the expenses of attending the university. The cost of attending the public university for one-year is $27,000. His family has promised to contribute $14,500 each year he is in school. What is the minimum amount of money Chris must contribute to his savings per month for the next 2 years to have enough money to pay for his first year of tuition?
a
$520.83
b
$530.85
c
$508.65
d
$597.16
Answer:
a. 520.83
Step-by-step explanation:
please rank brainliest :)
Given: α is an angle in the second quadrant, csc α = 25/7; β is an angle in the first quadrant, cos β = √2/2. The value of tan ( α - β ) = _____.
-3/17
29/17
-31/17
15/17
Answer:
-31/17
Step-by-step explanation:
csc²α-cot²α=1
cot²α=csc²α-1=(25/7)²-1=(625-49)/49=576/49
α is in 2nd quadrant so cotα is negative.
cot α=-√(576/49)=-24/7
tan α=-7/24
cos β=√2/2
sec β=2/√2=√2
sec²β-tan ²β=1
tan ²β=sec²β-1
tan²β=(√2)²-1=2-1=1
β is in 1st quadrant ,so tan β is positive.
tan β=1
[tex]tan (\alpha -\beta )=\frac{tan \alpha -tan \beta }{1+tan \alpha tan \beta } \\=\frac{\frac{-7}{24} -1}{1+(\frac{-7}{24}) (1)} \\=\frac{-7-24}{24-7} \\=\frac{-31}{17}[/tex]
A 50-meter cable is secured at the top of the tower and tied 30 meters away from
the base. What angle does the cable form with the ground?
Answer:
53.13 degrees to the nearest hundredth.
Step-by-step explanation:
We know the adjacent side and the hypotenuse of the right triangle.
So cos x = 30/50 = 0.6
The required angle x = 53.13 degrees.
Jayce looks around at an assembly. He notices his younger sister to his right and his older brother 48 feet ahead of him. If Jayce's brother and sister are 52 feet apart, how far apart are Jayce and his younger sister? *
Answer:
Solution given:
base[b]=48ft
perpendicular [p]=52ft
hypotenuse[h]=?
By using Pythagoras law
h²=p²+b²
h²=48²+52²
h=√5008
h=70.767=7.8ft
Jayce and his younger sister is 7.8ft apart.
Please help. ill give extra points for free if answered.
Answer: B
Step-by-step explanation:
Answer:
the person is correct b
Step-by-step explanation:
A triangular prism has a height of 11 meters and a base with the following measurements. All dimensions are in meters.
What is the value of B ?
7 m 2
8 m 2
77 m 2
14 m 2
ty :)
Answer:
its 7m 2
Step-by-step explanation:
- 7th Grade Work -
I rlly need help ; - ;
Answer:
The length would be 1.5x + 5.
Step-by-step explanation:
So first with this, note that 2 length + 2 height gives the perimeter of the rectangle.
Given this:
2(1/2x + 4) + 2(?) = 4x+18
x+8 + 2(?) = 4x+18
2(?) = 3x+10
? = 1.5x+5
1.5x + 5 = 1.5x + 5
The length would be 1.5x + 5.
To double check, by plugging in 1.5x + 5 back into the equation for the perimeter, you will get the same perimeter:
2(1.5x + 5) + 2(1/2x+4) = P
3x+10 + x+8 = P
4x + 18 = P
WILL MARK BRAINLIEST PROBABILITY!!
Answer:5/22
Step-by-step explanation:1/2+1/4+5(total-1 pink)=11/2
probability of getting purple=5/11/2,5/11*1/2=5/22
A student has scores of 73, 84, 91 and 78. What score must the student earn on the fifth test in order to have an average score of 85?
A. 85
B. 88
C. 97
D. 99
Answer:
[tex]99[/tex]
Step-by-step explanation:
The average of an [tex]x[/tex] amount of values is equal to the sum of all the values divided by [tex]x[/tex]. Thus, for any five scores to have an average score of 85, the sum of the scores must be [tex]85\cdot 5=425[/tex]
Therefore, we have the following equation:
[tex]73+84+91+78+m=425,\\m=\boxed{99}[/tex]
can some one multiply (x+11)^2
NO LINKS....................What is 60% of 80
Answer:
48
Step-by-step explanation:
80 x 0.6 = 48
The perimeter of the polygon is_______units.
Answer:
3 units
Step-by-step explanation:
Since the sides are congruent, then
5 - 2x = - 4x + 9 ( add 4x to both sides )
5 + 2x = 9 ( subtract 5 from both sides )
2x = 4 ( divide both sides by 2 )
x = 2
Then
5 - 2x = 5 - 2(2) = 5 - 4 = 1
perimeter = 3 × 1 = 3 units
A nearby pond has 5 frogs, and the population doubles every year. The inequality 5(2)^t>75, where t is the number of years, models when the population of frogs will be greater than 75.
Based on the inequality, when will the population of frogs in the pond be greater than 75?
t>4 years
t>7.5 years
t>2 years
t>1 year
Answer: t > 4 years
Explanation: This was the only logical answer, and I’ve taken the quiz.
A survey of students at a large high school reveals that 59% of the students are studying a language other than English. The options for language study at the school include Spanish, French, Japanese, and American Sign Language (ASL). Currently, 6% of the students who study a language other than English are studying ASL.
Suppose we select a student from the survey at random. Given that the student is studying a language other than English, what is the probability that the person is studying ASL?
a. 0.06
b. 0.102
c. 0.416
d. 0.53
Answer:
B) 0.102
Step-by-step explanation:
Edge 2021
Answer:
B) 0.102
Step-by-step explanation:
correct on edge
2. There are 27 students in a 7th grade class. For a fundraiser, each student
sells 50 candy bars that cost $0.75 each. If the class gets to keep 40% of
the profit from the sales, how much money does the class get to keep?
i just need help on it please help
Answer:
$405.00
Step-by-step explanation:
50 (27) = 1350
1350 (.75) = 1012.5
1012.5 (.40) = 405
405
Find awnsers 7- 12
not sure how to do slopes :/
