Answer:
Step-by-step explanation:
Sample Response: The ratio of girls to students represents a fraction because it is a part-to-whole comparison. The ratio of boys to girls is not a fraction because it is a part-to-part comparison.
The table below shows the probability distribution of students in a high school with 1500 students. What is the expected value for the age of a randomly chosen student?
Age
13, 14, 15, 16, 18
Probability
0.01, 0.28, 0.30, 0.25,0.15,0.01
A. 15.28
B. 15.64
C. 15.34
D. 15.36
Answer: 15.28
Step-by-step explanation:
The expected value for the age of a randomly chosen student is,
⇒ 15.28
Given that:
Total number of students,
⇒ n = 1500,
And, Age : 13, 14, 15, 16, 17, 18
Probability : 0.01, 0.25, 0.27, 0.30, 0.16, 0.01
Now,
We can Calculate the expected value as shown below,
E = 13 × 0.01 + 14 × 0.25 + 15 × 0.27 + 16 × 0.30 + 17 × 0.16 + 18 × 0.01
E = 0.13 + 3.5 + 4.05 + 4.8 + 2. 72 + 0.18
E = 15.38
Therefore, The expected value for the age of a randomly chosen student is 15.38.
To know more about probability:
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Which graph represents y - 1 = 2(x - 2)?
Answer: there isn’t a graph shown
Step-by-step explanation:
what is the value of the expression below (81^2)^1/8
[tex]\textsf{Hey there!}[/tex]
[tex]\mathsf{81^2=81\times81\rightarrow\bf{6,561}}[/tex]
[tex]\mathsf{(6,561)^{\dfrac{1}{8}}= \bf{3}}[/tex]
[tex]\boxed{\boxed{\mathsf{Therefore, your\ answer\ is: \boxed{\huge\textsf{\bf{C. 3}}}}}}\huge\checkmark[/tex]
[tex]\textsf{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\dfrac{\frak{LoveYourselfFirst}}{:)}[/tex]
Answer:
c
Step-by-step explanation:
because I said so " But rearle you cant start a sentence with because"
ok then, The answer is C because I said so
If a is half b , and b is twice c , then a:c=
Answer: a/c = 1
a/b = 1/2 => a = 1/2 .b
b/c = 2 => c = 1/2 .b
=> a/c = (1/2.b)/(1/2.b) = 1
Step-by-step explanation:
If a is half b, and b is twice c, then the fraction a:c will be 1.
What is a fraction?In such a fraction, the value that appears above the horizontal line is referred to as the numerator.
In another word, if we divide two numbers by each other then the upper word is called the numerator, and the lower word is called the denominator.
As per the given,
a is half b ⇒ a = b/2
b is twice c ⇒ b = 2c
By substitution,
a = (2c)/2
a = c
a:c = 1:1 = 1
Hence "If a is half b, and b is twice c, then the fraction a:c will be 1".
For more about fractions,
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Can someone please explain to me how to tell if a number it's prime or not
Answer:
A prime number is a number that can only be divided by 1 and itself.
Find how many solutions there are to the given equation that satisfy the given condition.
y1 +y2+y3+y4=27, each yi is a nonnegative integer.
Answer:
17550 solutions
Step-by-step explanation:
Given that:
y1 +y2+y3+y4=27
where;
(yi ≥ 0 and yi [tex]\epsilon[/tex] [tex]{\displaystyle \mathbb {Z} }[/tex] )
The no. of a nonnegative integer determines the number of ways to choose 27 objects from (4) distinct objects with repetition regardless of the order.
i.e
[tex]\bigg(^{27}_{4} \bigg)[/tex]
∴
The number of nonnegative integer solution is [tex]\bigg(^{27}_{4} \bigg)[/tex]
[tex]= \dfrac{27!}{4!(27-4)!}[/tex]
[tex]= \dfrac{27!}{4!(23)!}[/tex]
[tex]= \dfrac{27\times 26\times 25\times 24 \times 23 !}{4\times 3\times 2\times 1(23)!}[/tex]
[tex]= \dfrac{27\times 26\times 25\times 24 }{4\times 3\times 2\times 1}[/tex]
[tex]= \dfrac{421200}{24}[/tex]
= 17550 solutions
The following histogram shows the height of basketball players what would be the best estimate of average height ?
A. 75in
B. 82in
C. 85in
D. 80in
Answer:
D
Step-by-step explanation:
कम्प्युटरको गति मापन गर्ने एकाइहरूलाई वर्णन गर्नुहोस् ।
Answer:
मापनको एकाईलाई हर्ट्ज (हर्ट्ज) भनिन्छ, जुन प्रति सेकंड टेक्निकली एक चक्र हो, घडीको गति मापन गर्न प्रयोग हुन्छ। ... कम्प्युटरको घडी गति सामान्यतया मेगाहेर्ट्झ (मेगाहर्ट्ज) वा गिगाहर्ट्ज (GHz) मा मापन गरिएको छ। एक मेगाहेर्ट्ज प्रति सेकेन्ड १० लाख टिक्स बराबर हुन्छ, र एक गिगाहर्ट्ज बराबर एक सेकेन्ड टिक टिक प्रति सेकेन्ड।
22% of 152
HELP WHATS THE ANSWER
Answer:
14.47
Step-by-step explanation:
What’s x, and y ? Show work.
Y = 6x + 11
2x - 3y = 7
can someone please help ?
Please help me please
Answer:
To be honest I don't know I just need some points 1+1=2
Step-by-step explanation:
Angela has 30 packs of Pokemon cards each pack contains 20 cards how many packs of Pokemon cards does and Angela have
Answer:
600 cards
Step-by-step explanation:
30*20= 600
Answer:
30 packs of cards
Step-by-step explanation:
You literally answered your own question "Angela has 30 packs of Pokémon cards"
Now if your wanting to know how many cards she has it would be 600 because 30 * 20 = 600
or if you wanted you could do it this way:
2 * 3 = 6
10 * 10 = 100
6 * 100 = 600
What is the length of the line?
Answer:
4 units
Step-by-step explanation:
Answer:3/4
Step-by-step “ time/ distance?
The video game store is having a 25% off sale on all video games. How much money will Sandra save if she buys a game that originally
cost $49.952
The scale on a map is 1 inch = 60 miles. If two cities are 2 3/4 inches apart on the map, how many miles are they apart?
Answer:
120.75 miles apart
Step-by-step explanation:
Kensington was selling Girl Scout cookies and a customer offered her a deal. The customer would place three $1 bills, one $5 bill and one $10 bill in a bag. Kensington would reach into the bag and take one bill from the bag and get paid that instead of the $5 it would cost for one box of Girl Scout cookies. Should she take the deal? Or should she insist on getting the regular cost of $5?
Answer:
no she should take the deal
Step-by-step explanation:
there are 5 bills in that bag and only 1 of them has a chance of being over the regular price where as 3 have a chance of being under the regurla price the odds a not in the girl scouts favor as she has a 60%chance of not getting a $1 and only a 20% chance of getting the $10.
Can you help me with this question please
Answer: x=70
Step-by-step explanation:
Don’t mod this look at picture
a(-1 1)b(1 -2)c(0 -4) rotated 270 degrees by the origin
Given:
Consider the three points are A(-1,1), B(1,-2) and C(0,-4).
These points rotated 270 degrees by the origin.
To find:
The coordinates of points after rotation.
Solution:
If a figure rotated 270 degrees by the origin, then
[tex](x,y)\to (y,-x)[/tex]
Using this rule of transformation, we get
[tex]A(-1,1)\to A'(1,1)[/tex]
[tex]B(1,-2)\to B'(-2,-1)[/tex]
[tex]C(0,-4)\to C'(-4,0)[/tex]
Therefore, the points after rotation are A'(1,1), B'(-2,-1) and C(-4,0).
Please help me with this
Answer:
6.7
Step-by-step explanation:
what is the area of a rectangle with a length of 142 cm and a width of 23 cm?
Answer:
3,266
Step-by-step explanation:
Answer:
3266cm²
Step-by-step explanation:
try it it healps
72 638 rounded to the nearest
is 72 600.
Answer:
hundreth
Step-by-step explanation:
Is the relation a function?
{(14,9), (15,8), (8, 7), (1,9), (15, 2)
Answer:
No the relation is not a function
Step-by-step explanation:
This is because there are 2 x factors that have the value of 15. (15,8) and (15,2)
in order to make this a function you would have to change the one of the x factor of the 2 ratios:
(15,8) and (15,2)
1150 ÷ 15 (these are not the same problem 7000 ÷ 62 also i will mark brainlest 4 first answer if u never have been brainlest
Answer:
76.666. . . and 112.9032258064516
Step-by-step explanation:
Marcus is a car salesman and he earned an 8% commission on his monthly sales last month his sales total was $95,342 how much commission was he paid
Answer:
7627.36
Step-by-step explanation:
95342 * 8% = 7627.36
Answer:
Marcus earns 15% commission on his total sales at work.
Suppose Marcus's sales totaled $725 last week. How much did he earn in commission?
A.
$833.75
B.
$616.25
C.
$108.75
D.
$10.88
Step-by-step explanation:
Consider u = ⟨5, –2⟩ and v = ⟨10, –4⟩. What is the relationship between u and v?
The vectors point in the same direction.
The vectors form an acute angle.
The vectors form an obtuse angle.
The vectors point in opposite directions.
Answer: A. The vectors point in the same direction
Step-by-step explanation:
edge2020
Answer:
A) The vectors point in the same direction.
Step-by-step explanation:
got it right on edge :)
If Moore Motors buys at cost a truck for $4,000 and plans to sell it for $6,000, the percent markup on cost is:
Answer: 50%
Step-by-step explanation:
(6000-4000)/4000= 2000/4000
=2/4=1/2
(1/2)100=50
PLZ HELPPPPPPPPPPPPP GIVING BRAINLIST Match each expression to its value.
1. -1 + 2
1
2. 1 + (-2)
-3
3. -1 - 2
3
4. 1 - (-2)
-1
Answer:
1 and 3, 2 and 4.
Step-by-step explanation:
1. -1.66666666667
2. 1
3. -1.66666666667
4. -1
Measure the distance between lines c and d and the lengths of did”, ee”, ff “
What is the coefficient in the following expression?
5a2 - 7
Answer:
5 is the coefficient
Step-by-step explanation: