In a classroom of 30 students, in which 18 are girls and 12 are boys, what is the probability that two boys are selected without replacement by the teacher?
Answer:
about 4 out of 10
Step-by-step explanation:
Probabilities are used to determine the chances of events
The probability that two boys are selected is 0.1517
The given parameters are:
Boys = 12
Girls = 18
Total = 30
Given that the selection is without replacement, the probability that two boys are selected is:
p = 12/30 * 11/29
So, we have:
p = 0.1517
Hence, the probability that two boys are selected is 0.1517
Read more about probability at:
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Mediterranean dip telefono Cricket in the area between the change of the jacuzzi on the kicker telefono question so have the education
Solve each expressions for u and match them with their appropriate value.
Answer:
u=1
u=2
u=3
u=4
Step-by-step explanation:
trust me i am in 8th grade
Find the x-intercept and y-intercept of the line 4x - 3y= -12.
Answer:
x=3/4y+13 y=4/3x-4
Step-by-step explanation:
A lion passes through the point (-8,-2) and has a slope of - 3/4. write an equation in slope intercept form for this line.
The line L is a tangent to the circle x2 + y2 = 45 at the point (-3, 6).
The line L crosses the x-axis at the point P.
Work out the coordinates of P.
Answer:
The point P is (-15,0).
Step-by-step explanation:
We need to find the slope of the line L to get the coordinates of P.
We know that L is tangent to the circle at point (-3, 6), which means L is perpendicular to the radius of the circle (a line between the origin (0,0) and the tangent point (-3,6))
So let's find the slope or the radius.
[tex]m_{R}=\frac{6-0}{-3-0}[/tex]
[tex]m_{R}=-2[/tex]
Now, we know that if two lines are perpendiculars their slopes follow the rule:
[tex]m_{L}=-\frac{1}{m_{R}}[/tex]
[tex]m_{L}=\frac{1}{2}[/tex]
Knowing the slope of L we can find the equation of this line. The slope-intercept equation of a line is:
[tex]y=mx+b[/tex]
[tex]y=\frac{1}{2}x+b[/tex]
Using the point (-3,6) we can find b.
[tex]6=\frac{1}{2}(-3)+b[/tex]
[tex]b=\frac{15}{2}[/tex]
The line equation will be:
[tex]y=\frac{1}{2}x+\frac{15}{2}[/tex]
The point P has only an x-coordinate value (x,0)
So we have:
[tex]0=\frac{1}{2}x+\frac{15}{2}[/tex]
[tex]x=-15[/tex]
Therefore, the point P is (-15,0).
I hope it helps you!
plz help
there are 4 grams of fiber in 1/2 cup of oats how many grams of fiber are in 3 1/2 cups of Oats
Answer:
28 Grams
Step-by-step explanation:
each half cup is 4 Grams and you have 3 and a half cups so you take 3x2 which is 6 and then you do 6x4 which is 24 and you add another 4 cause of the extra half. hope this helps. :)
W(-1, 4), X(1, 2), Y-2, 1); k = 3
Answer:
what is the questionStep-by-step explanation:
get the latest flash player is required for video playback is unavailable right now because this video is not available for remote playback is
HELP WHAT IS THE ANSWER TO THIS??
Answer:
I think it is A
Step-by-step explanation:
Answer:
65
Step-by-step explanation:
The FitnessGram Pacer test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter Pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal *boop*. A single lap should be completed each time you hear this sound *ding*. Remember to run in a straight line, and run as long as possible. The second time you fail to complete a lap before the sound, your test is over. The test will begin on the word start. On your mark, get ready, start.
Answer:
i-
Step-by-step explanation:
On a coordinate plane, points are at (negative 5, 5), (0, 5), (0, negative 1), and (negative 5, negative 1).
Daniel is drawing a plan for a new animal pen for his farm. The rectangle plotted in the coordinate plane represents the pen, measured in feet. How many feet of fencing does he need to surround the pen?
10 feet
11 feet
20 feet
22 feet
Answer:
22 feet
Step-by-step explanation:
Answer:The guy is correct. its 2021 eduinty
Have a great day!
Step-by-step explanation:
please helpppp !!!!!
Answer:
The first one
Step-by-step explanation:
Negative b plus and minus the square root of b squared minus 4ac divided by 2a
An electronics company finds that 5 out of 75 capacitors produced are damaged. How
many damaged items can they expect if the company produces 1,500 capacitors?
=============================================
Explanation:
5/75 = 1/15 means that 1 out of every 15 capacitors are damaged.
Multiplying this with the 1500 capacitors produced, we expect about (1/15)*1500 = 1500/15 = 100 capacitors are damaged in this batch.
---------
A slightly different approach:
Saying "1 out of every 15 capacitors are damaged" means we can form the ratio
1 damaged: 15 total
Then multiply both sides by 100 so that the "15 total" jumps up to "1500 total" and we get the following
1 damaged: 15 total
100*(1 damaged): 100*(15 total)
100 damaged: 1500 total
We get the same answer as before.
Keep in mind that it's not a guarantee that we'll find 100 damaged capacitors out of 1500 total, but rather this is an estimate based on the average. So instead of saying "there are 100 damaged capacitors" it would be better to say "there are expected to be about 100 damaged capacitors".
100 items can they expect if the company produces 1,500 capacitors.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
An electronics company finds that 5 out of 75 capacitors produced are damaged.
So, if there are 1500 capacitors then the damaged one are
= 5/ 75 x 1500
= 5 x 20
= 100 capacitors
Learn more about Unitary Method here:
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Max sells lemonade for $3 per cup and candy for $2 per bar. He earns $450 selling lemonade and candy. If Max sold 90 bars of candy, how many cups of lemonade did he sell?
found this sheet, hope it helps !!
Find the volume of a cylinder with a height of 6 cm and a radius of 3 cm. 3 cm 6 cm
Help plz it ia due soon i will mark braniliest
Answer:
the answer is A 54
Step-by-step explanation
Answer
A. 54
Step-by-step explanation:
Well for me its B. 54
But I did get a 100 on my test
Paul was thinking of a number. Paul doubles it and adds 8.7 to get an answer of 23.4. Form an
Someone explain to me how to write an equation out in slope-intercept form in simple terms with examples I'm so confused
Answer:
are you talking about y=mx+b? M would be the slope, and B would be the y intercept, so if we wanted to do, lets say 4,5, we would say y=4x+5, i think,
Step-by-step explanation:
An equation in slope-intercept form looks like this: y = mx+b
In the equation, m is equal to the growth rate of the line on the graph and b represents the y-intercept (where the line meets with the y-axis).
For the line shown in the picture below, the equation is y = 1x + 2 (not exactly but based on estimates). Also, you can ignore the writing on the picture. (0-0')
y = 1x + 2
In this equation. 1 represents the growth rate and 2 represents the y-intercept.
So, when writing an equation, look for these two things:
y-intercept: where the line of a graph meets with the y-axis
growth rate: how much is the line increasing by on the y-axis for every unit on the x-axis?
:3))
1. The diameter equals
a. Radius square
b. three times the radius
c. twice the radius
d. half the radius
Answer:
C) twice the radius
Step-by-step explanation:
the radius is half the diameter
Ms. Pickle is a salesperson at Fluffy Dogs. Each week she earns $560 plus a 6.5% of her sales. How much did she earn last week if her sales were $3800?
Answer:
I think 247 is your answer!
Step-by-step explanation:
$560 plus a 6.5% of her sales = 596.4 US$
3800 plus a 6.5% of her sales last week = 4047
6.5% of 3800 is 247
Determine the radius or diameter. Dont forget units!
1. r= 4.6 in, d=
2. d= 8.2 cm, r=
3. d= 18.4 ft, r=
4. r= 21.65 yds, d=
Answer
Step-by-step explanation:
1. 9.2
2.4.1
3.9.2
4.43.3
Answer:
1. r= 4.6 in, d= 4.6×2=9.3in
2. d= 8.2 cm, r= 8.2/2=4.1cm
3. d= 18.4 ft, r= 18.4/2=9.2ft
4. r= 21.65 yds, d=21.65×2=43.3yds
at one school there are 81 girls. This corresponds to 45% of all students at the school. how many boys go to school?
pls help me with this multiple choice !
Answer:
A
Step-by-step explanation:
[tex] \tan(60) = \frac{13 \sqrt{3} }{y} \\ y = \frac{13 \sqrt{3} }{ \tan(60) } = 13 \\ \cos(60) = \frac{13}{x} \\ x = 26[/tex]
Given f(x) = -5(x - 2) + 21, what is the value of f(8)?
Answer:
Step-by-step explanation:
f(8) = -5(8 - 2) + 21
= -30 + 21
= -9
What is the location of point B?
(5, 3)
(3, 5)
(3, -5)
(-5, -3)
is 36.81 more than 36 or it is close to 37 than 36?
Answer:
36.81 is more than 36 and it is closer to 37
Step-by-step explanation:
.81 is bigger than .5
What is the circumference of a circle with a radius of 86 inches? use 3.14 for PI
Step-by-step explanation:
[tex]circumference = 2\pi\: r \: \\ = 2 \times 3.14 \times 86 \\ = 540.08[/tex]
Answer:
540.08
Step-by-step explanation:
Rewrite the function
g(x) = 4x2 – 28x + 49
Answer:
g(X)=4(x-7/2)^2+0
Step-by-step explanation:
khan said it was right
Alice walks 6 over 10 mile ever day. How far does alice in 5 days?
Answer:
3 miles
Step-by-step explanation:
6/10x5=30/10
30/10=3
A woman can do a job in 9 days and her daughter can do the same job in 16 days. They start working together, but after 4 days the daughter leaves and the woman finishes the job alone. How many days did it take her to finish the job alone?
Step-by-step explanation:
ans...9days.......,........
Kyle purchased some video games for $60. The clerk told him that he will also be charged 8% sales tax on his purchase?
Answer: 64.80
Step-by-step explanation: