Given are..
30
9
17
7
Operation to use..
Addition and Subtraction
Solution:
9 + 17 = 26
30 - 26 = 4
4 + 7 = 11
so in that case there are 11 student chosen randomly from the class has a brother and a sister.
The probability that a student chosen randomly from the class has a brother and a sister would be; 11/30
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
The probability of all the events occurring need to be 1.
The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.
We are given that class of 30 students, 9 have a brother and 17 have a sister. There are 7 students who have a brother and a sister.
Therefore, we have 9 + 17 = 26
Total students
30 - 26 = 4
4 + 7 = 11
As we can see that there are 11 student chosen randomly from the class has a brother and a sister;
Probabilty = 11/30
Learn more about probability here;
https://brainly.com/question/9326835
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PLEASE HELP ME!!! Which of the following rational functions is graphed below?
Answer:
A
Step-by-step explanation:
Help me pls would be appreciated
Answer:
Sphere volume is this formula
V=(4/3)πr^3
plug in 21 for r in this formula
If you are meant to round pi to 3.14 the answer is = 38722.72
If you are not meant to round pi to 3.14 the answer is = 38792.39
I can't figure this out
9514 1404 393
Answer:
∠H = 50°∠A = 80°∠W = 130°Step-by-step explanation:
It is helpful to remember that opposite angles of an inscribed quadrilateral are supplementary. This lets you find the value of m.
∠A +∠K = 180°
8m° +10m° = 180°
18m = 180
m = 180/18 = 10
Using this value we can find ...
∠H = 5m° = 5·10° = 50°
∠A = 8m° = 8·10° = 80°
∠W = 180° -∠H = 180° -50° = 130°
Find the simplified product: 2/5x^3(-3/10^2)
Answer:
−
-3^3/3250
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
correct on edge
A circle has a secant and a tangent that intersect outside of the circle. If the measure of ∠ is 29° and the measure of is 45°, then determine the measure of
Answer:
CD = 103°
Step-by-step explanation:
The secant- tangent angle BAD is half the difference of the intercepted arcs, that is
[tex]\frac{1}{2}[/tex] ( CD - BD ) = 29° ( multiply both sides by 2 )
CD - BD = 58°
CD - 45° = 58° ( add 45° to both sides )
CD = 103°
The vertices of triangle JKL are J(–2, 3), K(1, 6), and L(3, –2). Which type of triangle best describes triangle JKL
A. right scalene
B. non-right scalene
C. right isosceles
D. non-right isosceles
Answer:
Scalene triangle or right scalene triangle is correct
Step-by-step explanation:
30 + a = 40, a = ?
(please answer)
Your answer is gunna be 10
Answer:
The answer is 10
Step-by-step explanation:
Move all terms not containing a to the right side of the equation.
~Hoped this helped~
~Brainiliest?~
What is the formula used to find the area of this
shape? *This symbol: / means divided by
A= b xh/2
A= I xw
A=s2
A= (b1 +b2)h/ 2
Answer:
A = (b1 + b2)h/2
Step-by-step explanation:
The shape given is a trapezoid having two parallel sides which can be labelled b1 and b2 respectively. The distance between the two parallel sides is the height of the trapezoid, which is labelled h.
Area of a trapezoid is given as:
A = (b1 + b2)h/2
At The Family Farm it costs $4 to enter the barn and an
additional $2 for each animal you want to feed. Which
expression represents the cost of feeding y animals?
Answer:
4 + 2y = x
________________________________
A copy machine produces 66 pages of print in 66 seconds.
How many pages are produced per second?
Answer:
1
Step-by-step explanation:
66 pages in 66 seconds. 66/66 = 1
Answer:
1 page per second...
Step-by-step explanation:
did you really just ask us that question...?? if you print 66 oages in 66 seconds, one page is made per second.. you must be joking
A line passes through the point (-8, 3) and has a slope of 5/4. Write an equation in point-slope form for this line.
Which sentence expresses the equation 9x=45 in words?
Group of answer choices
A.The product of a number and 9 is 45.
B.The sum of a number and 9 is 45.
C. A number decreased by 9 is 45.
D.A number 45 is 9 more than another number.
Ps its not B
Answer:
The product of a number and 9 is 45
Step-by-step explanation:
Please help me i need help
Answer:
sin is .6, Cos is .8 and tan is .75
Step-by-step explanation:
Ez
4,-4 on the coordinate plane
would 4 go on the x-axis or y-axis bc im du mb :)
A piece of rural land sold ten years ago for 40000. The price for the same land this year is $800 more per acre, and it sold for 60000. What is the size of the piece of land in acres?
Answer: 25
Step-by-step explanation:
From the question, we are informed that the piece of rural land sold ten years ago for 40000 and that the price for the same land this year is $800 more per acre, and it sold for 60000.
The size of the piece of land in acres will then be:
40000 + 800x = 60000
800x = 60000 - 40000
800x = 20000
x = 20000/800
x = 25
The land is 25 acres
Answer: 25
Step-by-step explanation:
40000 + 800x = 60000800x = 60000 - 40000800x = 20000x = 20000/800x = 25
what is the area of this quadrilateral
A.80 square feet
B.30 square feet
C.50 square feet
D.130 square feet
Can someone help me with this question?
Answer:1/3
Step-by-step explanation:
gradient equals
[tex]\frac{Y2-Y1}{X2-X1}[/tex]
=[tex]\frac{5-3}{10-4}[/tex]
=[tex]\frac{2}{6}[/tex]
=[tex]\frac{1}{3}[/tex]
Where is the midpoint of AB if A(6, 4) and B(5,-2)?
A) (11,2)
B (11,6)
C) (5.5,3)
D (5.5,1)
Answer:
Step-by-step explanation:
The midpoint is just the average coordinates of the endpoints.
mp=((x1+x2)/2, (y1+y2)/2), we have points (6,4) and (5,-2)
mp=((6+5)/2, (4-2)/2)
mp=(5.5, 1)
So D is the answer.
hey can anyone help me?
Out of 200 students, 10 had a cleft chin.
What percent of students had a cleft chin?
Answer:
chin
Step-by-step explanation:
stan kim namjoon for good grades and clear skin
Answer:
5 percent
Step-by-step explanation:
200 of 10 was 5 percent
(3ax + 4a) - (9x + 15a)
Answer:
3ax-11a-9x
Step-by-step explanation:
What is the unit rate
Answer:
1 problem every 5 minutes
Step-by-step explanation:
the way you write the unit type depends on which values are on which axis.
I divided 15 by 3 and got 5
and when dividing the time by problems solved you always get 5 for the values in the table
hope this helps chu <3
i need sum one smart
if i did 54 push ups in 1 minute what would be the independent variable and the dependent variable
Answer:
Independent - Minutes
Dependent - Push up #
Step-by-step explanation:
The minutes do not depend on anything so they would be independent. The push ups depend on how many minutes there are so it is dependent.
Hope this helps :)
Use the data to select the correct line plot. Then answer the question.
Answer:
B
Step-by-step explanation:
How many different arrangements are there of the 3 letters chosen from the word combination
Answer:
bnnnm
bStep-by-step explanation:
What is the approximate Probability of drawing a Black OR Face Card from a standard deck of shuffled cards?
Answer:
0.73
Step-by-step explanation:
Number of cards in a standard deck = 52
Number of black cards = 26
Number of face cards = 12
Probability of drawing either a black or face card
Probability = required outcome / Total possible outcomes
P(drawing a black card or face card) = (number of black cards / total card) + (number of face cards / total cards)
= 26/52 + 12 /52
= 0.5 + 0.2307692
= 0.73
An online clothing store had 450,082 visitors in May, 450,566 visitors in June, and 405,987 visitors in July. What is the order of visitors for these months from greatest to least? Separate these with a semicolon
Answer:
450, 566 ; 450,082 ; 405,987
Step-by-step explanation:
Number of visitors in may = 450,082
Number of visitors in June = 450,566
Number of visitors in July = 405,987
Arranging the number of visitors from greatest to least(In descending order).
450,566 > 450,082 > 405,987
450, 566 ; 450,082 ; 405,987
What is the slope and y-intercept of the graph?
slope: 1/2
A
y-intercept: 4
slope: -2
B
y-intercept:-4
slope: -1/2
y-intercept: 4
slope: 2
D
y-intercept:4
Answer:
A
Step-by-step explanation:
Gasoline recently cost 82.5¢/ L. If Tonya’s car holds 58.5 L, how much should it cost to fill the tank?
Answer:
Gasoline per liter = 82.5¢
Tonya's car has a capacity of 58.5 L
Cost = 58.5 x 82.5
Cost = 4826. 25¢
1. Leslie visits a local department store in order to purchase summer clothes. The
price of the dress is $40. The dress is marked up 25%. What is the selling price of
the dress?
Answer:
$50
Step-by-step explanation:
Given data
We are given that the price is $40
the markup percent is 25%
Hence the price will be
40+25% of 40
=40+ 25/100*40
=40+ 0.25*40
=40+10
=$50
Therefore, the price of the dress is $50