ASAP!!!!
In a class of 30 students, 17 have a brother and 14 have a sister. There are 8 students who have a brother and a sister. What is the probability that a student chosen randomly from the class does not have a brother?
Answer:
[tex]\frac{14}{30} = 7/15[/tex]
The probability that a randomly selected student has a brother given they have a sister is 11/30.
We have given that,
Of 30 students in a class, 17 have a brother, 20 have a sister, and 11 have a brother and a sister.
What is the formula for probability?The Probability of an event is the ratio of the number of favorable events divided by the total number of outcome in the sample space.
Since there are 30 students in total, and 11 of them have both a brother and a sister,
Then 11/30 (11 out of the 30 students) would be the probability of a student having a brother given that they have a sister.
To learn more about the probability visit:
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PLEASE HELP ME FAST! WILL GIVE BRAINLIEST.
What is the length of the segment joining the points at (−3, 0) and (5, 6)?
Enter your answer in the box.
units
Answer- √ 26
Explanation:
Use the distance formula:
√ ( y 2 − y 1 )² + ( x 2 − x 1 ) ²
Plug in your values:
√ ( − 5− ( − 4 ) )² + ( 2 − ( − 3 ) )²
Simplify:
√ ( − 1 )² + ( 5 )²
Simplify:
√ 1 + 25
Simplify:
√ 26
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Anyways bye!
I need help immediately!!!!!!!
Answer:
y = -2/3x - 5
Step-by-step explanation:
The type of number that cannot be expressed as a fraction because the fractional part would go on for infinity without ever repeating a sequence is:
Find the distance between the two points (-2,3) (2,4)
Answer:
Not sure of the answer but may be is 2/6
Answer:
[tex] \sqrt{17} [/tex]
+
Find the missing side to the nearest tenth 23 and 19
Two linear functions are described below.
Function 1 has the equation y = - 2x + 4.
Function 2 is a line passing through the points (0, 4) and (8,0).
Which of the following statements are true? Select one that applies.
Answer:
c
Step-by-step explanation:
A farmer has 200 feet of fencing to use for a chicken pen. He wants the width of the pen to be 27 feet. What will the length be?
Answer:
Length will be 173
Step-by-step explanation:
There are two bags of oranges on sale. The prices are shown below: Bag A: $2400 containing 12 oranges Bag B: $3000 containing 20 oranges Which is the better buy?
Answer:
Bag B which is $150 for one orange
Step-by-step explanation:
In ,bag A 12 oranges cost 2400
The price of one orange in bag A is
= 2400/12
= $200
In bag B 20 oranges cost $3000
The cost of one orange in bag B is
= 3000/20
= $150
Hence the better buy is bag B which goes for $150 for one orange
Who could help me please and thank you
Answer:
"The expression represents a cubic polynomial with 3 terms. The constant term is -10, the leading degree is 3, and the leading coefficient is (-1/6)"
Step-by-step explanation:
We have the expression:
[tex]-\frac{x^3}{6} - 10 + x[/tex]
First, what does that expression represents?
As al the powers of x are positive numbers, we can see that this is a polynomial, and the largest power is 3, so this is a polynomial of degree 3, also called a cubic polynomial.
How many terms are there?
The terms are the things separated by + or - symbols, is easy to see that there are 3 terms.
What is the constant term?
The constant term is the term where the variable, x, does not appear, here the constant term is: -10
What is the leading coefficient?
The leading coefficient is the coefficient that multiplies the term with the largest power of x, in this case, we can rewrite:
[tex]-\frac{x^3}{6} -10 + x = (\frac{-1}{6})*x^3 - 10 + x[/tex]
the leading coefficient is:
(-1/6)
There is a part of the statement that I can't read, i suppose that there says:
"leading degree"
this is just the largest power of x that appears in the polynomial, in this case, is 3.
Then the complete statement is:
"The expression represents a cubic polynomial with 3 terms. The constant term is -10, the leading degree is 3, and the leading coefficient is (-1/6)"
Old Grandpa Joe left half his money to his granddaughter and half that amount to his grandson.
He left a sixth to his brother, and the remainder, £1,000, to the Dogs’ home.
How much did he leave altogether?
Answer:
£12000
Step-by-step explanation:
Granddaughter -- 1/2 of x
Grandson -- 1/2(1/2 of x)
Brother -- 1/6 of x
Dogs' home -- £1000
Therefore,
[tex]\frac{x}{2} + \frac{x}{4} + \frac{x}{6} + 1000 = x[/tex]
x = 12000
Thenks and mark me brainliest :)
What quadrant does this lie in: cot(theta)>0 and sin(theta)>0?
Answer:
lies on IV quadrant
Step-by-step explanation:
Find the arch length
(Give an exact answer & show work)
Answer:
12.56637
Step-by-step explanation:
[tex]Arc length = 2\pi r(\frac{0}{360}) \\Arc lenght = 2\pi 6(\frac{120}{360} )[/tex]
Which fraction is
equivalent to 1/8
What about 2/16?
We can reduce 2/16 to 1/8.
someone pls help me solve this
2(10) + 2(x-4)
I have an average of 84 right now but I failed my homework so that would most likely turn to an 82 and my parents will actually kill me I need to get to at least an average of 90 minimum I know report cards will be out soon and I will guess I have a week before marking period three ends could I boost my average up by 6-8% within a week of getting straight hundreds in my homework? Homework’s count a lot.
Answer:
I would say yes. Now I'm not in your type of school grading system, but if you try to get as many 90s and 100s in your homework for the next week, you would probably get there.
Step-by-step explanation:
Good luck! I know you will do great.
Find BC in ABC round to the nearest 10th
Answer:
Step-by-step explanation:
take 53 degree as reference angle
using tan rule
tan 53=opposite/adjacent
1.32=BC/18
1.32*18=BC
23.76=BC
23.8=BC
dont answer if u dont know please!!
Answer:
Step-by-step explanation:
I need the answer pls Immediately!!!!!!!
Answer:
Equation: y = 5x - 2
Step-by-step explanation:
Slope = Change in y / Change in x
Change in y = +5
Change in x = +1
Slope = 5/1 or 5
Y-intercept = y-value where x = 0
x = 0, y = 3-5
y = -2
y-intercept = -2
Finally;
Equation: y = 5x - 2
Hope this helps!
Answer:
y = 5x - 2
Step-by-step explanation:
(1,3) (2,8)
y2 - y1 / x2 - x1
8 - 3 / 2 - 1
5
y = 5x + b
3 = 5(1) + b
3 = 5 + b
-2 = b
I need help rn !! Please help me and explain
Answer:
A
Step-by-step explanation:
I=PRN
=4500×(4.75/100)×3
=$641.25
What is the sales tax of a $15.95 video game if the tax rate is 7%
Answer:
$17.07
Step-by-step explanation:
Step 1: Find the percent of the price
Convert 7% to fraction
[tex]= \frac{7}{100}\\\\=\frac{7}{100}\times \:15.95[/tex]
Multiply
[tex]=\frac{7\times \:15.95}{100}[/tex]
Multiply the factors
[tex]7\times \:15.95=111.65\\\\=\frac{111.65}{100}[/tex]
Divide
[tex]\frac{111.65}{100}=1.1165\\\\=1.1165[/tex]
Step 2: Add the percent off to the original price
[tex]15.95 + 1.1165\\\\= 17.0665[/tex]
Therefore, the total cost including tax in the nearest cent is 17.07 dollars
Two similar cylinders have radii of 15 inches and 6 inches. What is the ratio of the surface area of the small cylinder to the surface area of the large cylinder.
Answer:
4:25
Step-by-step explanation:
Given that,
r₁ = 15 inches, r₂ = 6 inches
The area of the cylinder is given by :
[tex]A=2\pi rh+2\pi r^2[/tex]
The ratio of surface areas of two cylinders,
[tex]\dfrac{S_2}{S_1}=\dfrac{2\pi r_2h_2+2\pi r_2^2}{2\pi r_1h_1+2\pi r_1^2}\\\\\dfrac{S_2}{S_1}=(\dfrac{r_2}{r_1})^2\\\\=\dfrac{6}{15}^2\\\\=\dfrac{4}{25}[/tex]
Hence, the required ratio is 4:25.
PLEASE HELPPPP THE DROP DOWN MENUES ARE ALL THE SAME
Answer:
a) distributive property
b) combining like terms
c) commutative property of addition
A bag contains 5 red marbles, 3 blue marbles and 6 green marbles. If two marbles are drawn out of the bag, what is the exact probability that both marbles drawn will be green?
Answer:
15/91
Step-by-step explanation:
P(G,G) = 6/14 x 5/13 = 15/91
The Ace Bicycle Shop charges a flat fee
of $4, plus $1 per hour, for the hire of a
bicycle. The Best Bicycle Shop charges
a flat fee of $8, plus 50 cents per hour.
Connie and her friends hire three bicycles
from Ace, and David and his brother hire
two bicycles from Best. After how many
hours will their hire costs be the same?
Answer:
x = number of hours = 8 hours
Step-by-step explanation:
Let
x = number of hours
There are 3 people who rented bicycle from each shop
Ace bicycle shop:
Total cost = 3(4 + x)
= 12 + 3x
Best bicycle shop:
Total cost = 3(8 + 0.50x)
= 24 + 1.5x
Equate both equations and solve
12 + 3x = 24 + 1.5x
12 - 24 = 1.5x - 3x
-12 = -1.5x
x = -12/-1.5
x = 8 hours
x = number of hours = 8 hours
What is the radius?
Find the length of the radius of the circle with an equation of
(x + 3)2 + (y-7)2 = 289.
Answer:
Radius = 17.
Step-by-step explanation:
If(h,k) is centre and rradius, the eqn. of circle is :(−x h)2+(y−k)2=r2
Comparing with the given eqn. of circle, we find, r2=289 Hence, radius is 17
Can someone help me with this question please?!
Answer:
H. $26
Step-by-step explanation:
$6.50 x 4 = 26. The cost is exact.
Help??????????????????
Answer:
40
Step-by-step explanation:
52= 1/2(64 + x)
52 = 32 + 0.5x
52-32= 32-32 + .5x
20=.5x
Divide both sides by .5x
X = 40.
A lampshade has a height of 12cm and upper and lower diameters of 10cm and 20cm A)what area of material is required to cover that curved surface of the frustum B)what is the volume of the frustum (Give both answers in terms of pie)
Answer:
[tex](a)\ Area = 195\pi[/tex]
[tex](b)\ Volume = 700\pi[/tex]
Step-by-step explanation:
Given
[tex]h = 12[/tex]
[tex]d_1 = 10[/tex] --- lower diameter
[tex]d_2 = 20[/tex] --- upper diameter
Solving (a): The curved surface area
This is calculated as:
[tex]Area = \pi l(r_1 + r_2)[/tex]
Where
[tex]r_1 = 0.5 * d_1 = 0.5 * 10 = 5[/tex] --- lower radius
[tex]r_2 = 0.5 * d_2 = 0.5 * 20 = 10[/tex] --- upper radius
And
[tex]l = \sqrt{h^2 + (r_1 - r_2)^2[/tex] ---- l represents the slant height of the frustrum
[tex]l = \sqrt{12^2 + (5 - 10)^2[/tex]
[tex]l = \sqrt{12^2 + (-5)^2[/tex]
[tex]l = \sqrt{144 + 25[/tex]
[tex]l = \sqrt{169[/tex]
[tex]l = 13[/tex]
So, we have:
[tex]Area = \pi l(r_1 + r_2)[/tex]
[tex]Area = \pi * 13(5 + 10)[/tex]
[tex]Area = \pi * 13(15)[/tex]
[tex]Area = 195\pi[/tex]
Solving (b): The volume
This is calculated as:
[tex]Volume = \frac{1}{3}\pi * h * (r_1^2 + r_2^2 + (r_1 * r_2))[/tex]
This gives:
[tex]Volume = \frac{1}{3}\pi * 12 * (5^2 + 10^2 + (5 * 10))[/tex]
[tex]Volume = \frac{1}{3}\pi * 12 * (25 + 100 + (50))[/tex]
[tex]Volume = \frac{1}{3}\pi * 12 * (175)[/tex]
[tex]Volume = \pi *4 * 175[/tex]
[tex]Volume = 700\pi[/tex]
You have a piggy bank that contains 2 pennies, 4 nickels, 8 dimes, and 6 quarters. Find the probability of picking a coin worth more than 10 cents. .
Answer:
The probability is 3/10
Step-by-step explanation:
So a quarter is the only coin that’s worth more than 10¢ so 6/20 = 3/10