Answer:
1/4
Step-by-step explanation:
The probability that a student has a brother given that they do not have a sister 9/7.
How to calculate the probability of an event?Suppose that there are finite elementary events in the sample space of the considered experiment, and all are equally likely.
Then, suppose we want to find the probability of an event E.
Then, its probability is given;
[tex]\rm P(E)=\dfrac{Number \ of \ favourable \ events}{Number \ of \ total \ events}\\\\[/tex]
In a class of 22 students, 13 have a brother and 15 have a sister.
There are 3 students who do not have any siblings.
3 students don't have a sibling.
The probability that a student has a brother given that they do not have a sister is;
[tex]\rm P(E)=\dfrac{Number \ of \ favourable \ events}{Number \ of \ total \ events}\\\\ \rm P(E)=\dfrac{13+15-22+3}{22-15}\\\\\rm P(E)=\dfrac{31-22}{7}\\\\ P(E)=\dfrac{9}{7}[/tex]
So, the probability that a student has a brother given that they do not have a sister 9/7.
Learn more about probability here:
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You have a 10% coupon for your favorite restaurant. You order $75 worth of food and drinks. What will your bill be (before tax) after the 10% discount?
Answer: $67.50
Step-by-step explanation:
1. Annual sales for a fast food restaurant are $650,000 and are increasing at a rate of 4% per year
Use an exponential function to find the annual sales after 7 years.
Answer:
The value after 7 years is $ 855355.65
Solution:
Given that, Annual sales for a fast food restaurant are 650000 and are increasing at a rate of 4% per year
To find: exponential function to find the annual sales after 7 years
The exponential growth function is given as:
Where,
"a" is the initial amount
"y" is the future value
"r" is the rate of interest in decimal
"t" is the number of years
Here in this given question,
a = 650000
t = 7 years
Substituting the values in given formula,
Thus the value after 7 years is $ 855355.65
Step-by-step explanation:
what's the answer to this one ?
Answer:
59 degrees
Step-by-step explanation:
There are 360 degrees in a circle. Each arc with a known measure adds up to 242 degrees. To find the measure of the third remaining arc DC, we have to subtract 242 from 360, which leaves us with 118 degrees. The inscribed angle theorem states that the measure of an inscribed angle is half the measure of its intercepted arc. This means we have to divide 118 by 2 to find the value of DC's associated inscribed angle. This leaves us with 59 degrees.
PLEASE HURRY!!!
An airplane can seat up to 175 passengers. The airline has already sold 87 tickets for a flight on the airplane. Which graph represents the solution to the inequality that finds the number of tickets the airline can still sell?
Everybody is saying its c but it says its wrong on edge 2021
Answer:
C
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
What is the value of x in the equation
Answer:
5
Step-by-step explanation:
Answer:
5+3/10 = 4/5 X=5
Step-by-step explanation:
8/10 DIVIDED BY 2 = 4/5
The symbol^ => "means to the power of". The value of 3^2 + 2^3
10 points
Answer:
17
Step-by-step explanation:
3^2 = 3*3 = 9
2^3 = 2*2*2 = 8
3^2 + 2^3 = 9 + 8 = 17
Jessica and her friends have gone to dinner. When they finished eating their bill came to $82. Jessica decided that she wanted to give a 19% tip . Estimate how much a19% tip on an $82 dinner bill will be.
Answer:
15.58
Step-by-step explanation:
82 x 0.19 = 15.58
Your final cost will be 97.58 (82 + 15.58)
Answer: The correct answer is D
Step-by-step explanation: I took the unit test
1.) A toy helicopter costs $64 before
sales tax. If the sales tax is 5%, how
much would it cost to buy?
2. A piece of hematite contains 72% iron. if the hematite weighed 160g, how much iron would there be?
Answer:
1.) 67.2
2.) 115.2
Step-by-step explanation:
Fill in the blank with the correct word(s) to complete the sentence.
A three-dimensional figure has ______, width, and _____.
A.
length; height
B.
length; congruent
C.
height; pattern
D.
length; pattern
I WILL GIVE A BRAINLEST TO (1) LUCKY WINNER THE WINNER GETS POINTS AND BRAINLESTS! ENJOY ;)
Answer:
A
Step-by-step explanation:
i promise it's right
(04.05)
Which of the following is true about a function that is constant? (4 points)
HELP PLEASE
Answer:
A. it is a horizontal line
Step-by-step explanation:
What is the center of dilation?
Answer:
Original coordinates of F is (2,1)
Step-by-step explanation:
when DEFG is dilated by a scale factor of 1/2 with a dilation center of (0, 0), coordinates of point F' will be ( 1, 1/2)
WILL MARK BRAINLIEST!
Elevation questions:
1. how much higher is 500 than -400 m
2. how much higher is -200 m than 450 m
Answer: 900 and 650
Step-by-step explanation: so because 400 is negative, it would take 400 to get to 0 and 500 more to get to 500 so 900 for 1. And same thing for the second one, -200 plus 200 is 0 plus 450, it’s 650
1. Quadrilateral EFGH is an isosceles trapezoid. If mG is four times mH, what is mE? A)18° C)72° D)144° B)36°
Answer:
<E = 36 degrees (Answer B)
Step-by-step explanation:
Recall that the addition of all internal angles in a quadrilateral must equal 360 degrees. Then we can write the equation that states this as:
<E + <F + <G + <H = 360
Notice as well that we are dealing with an isosceles trapezoid, so there is a symmetry along the line that passes through the midpoints of sides FG and EH (the two bases). That means that the measures of angles <F = <G and <E = <H .
The previous equation then can be written as:
<H + <G + <G + <H = 360
Also, since we are told that <G = 4 <H, we can use this info in the equation as shown below:
<H + 4 <H + 4 <H + <H = 360
10 <H = 360
divide both sides by 10 to isolate <H
<H = 360 / 10
<H = 36
Since as we mentioned, <E equals <H, we can state that
the measure of <E = 36 degrees (Answer B)
How many toothpicks make a triangle? Two triangles? Write
an expression that represents the number of toothpicks
needed to make x triangles that appear side-by-side in a
single row, as shown. Explain your reasoning,
Answer:
3 toothpicks make a triangle x =3
Step-by-step explanation:
help! asap! :) please I need help can u do this?
What is the additive inverse of the complex number 9 – 4i? –9 – 4i –9 + 4i 9 – 4i 9 + 4i
Answer:
-9+4i
Step-by-step explanation:
Additive inverse + 9-4i = 0,
therefore additive inverse = -9 + 4i
Answer:
B. -9+4i
Step-by-step explanation:
Just took the Pre-Test on Edg. !!
Is this non linear or linear?
Answer:
Non-linear
Step-by-step explanation:
If we were to graph this table, the points will form a curve.
This is most likely a exponential function, not a linear function.
A linear function would form a straight line on a graph.
Hope this helps!
if n is an integer, what is the sum of the next three consecutive even integers greater than 2n? a. 6n + 12 b. 6n + 10 c. 6n + 4 d. 6n + 8
Answer:
a) 6n + 12
Step-by-step explanation:
Next three consecutive integers are : 2n + 2 , 2n + 4 , 2n + 6
2n + 2 + 2n +4 +2n +6 = 2n+ 2n + 2n + 2 + 4 + 6
= 6n + 12
maria will run less than 32 miles this week. so far, she has run 18 miles. what are the possible numbers of additional miles she will run?
Answer:
17
Step-by-step explanation:
36-18=18
but it has to be less than 32 miles so its 17 miles.
why is 3 1/2 multipiled by x in the equation
Answer:
I don't know the equation, but I will assume that 3 1/2 is the slope.
Step-by-step explanation:
For example, in the equation y = 10x - 9, the slope is 10.
Answer:
3 1/2 x is multiplied by x In the equation because it is the coefficient, the number being multiplied by the variable
Step-by-step explanation:
Please help
-3.7n = -22.2
Answer:
n=-22.2/-3.7 { - and - will cancel}
so n=22.2/3.7
therefore n=6
QUESTION IS IN IMAGE
Answer:
112
Step-by-step explanation:
so although 8 wouldn't fully trust me here my best bet would be 112 because 68 plus 112 is 180 which is half of 360 and 360 Is the degrees 9f the circle.
Raymond is building a new dog run with a raised border in his backyard. The boards on the two shorter sides are 6 feet thick, and the boards on the two longer sides are 4 feet thick. Raymond wants the outer length of the dog run to be 4 times its height and the outer width to be 2 times its height. He also wants the boards to rise 4 feet above the level of the grass in the dog run.
Answer:
30
Step-by-step explanation:
Please help me quickly
Answer:
The tv is 35 inches tall
Step-by-step explanation:
Plug the numbers into the Pythagorean Theorem
The 37 is the hypotenuse because it's the diagonal length and it should be the longest
Can someone tell me the answer and explanation??
Answer:
$15.21
Step-by-step explanation:
Why it would be D is if find out what the 17% is ($2.21) you would add it on top of the $13 and it gives you $15.21 or D.
help me answer the questions please
what are the numbers in pi
Answer:
I do not know the full numbers, but in most math problems teachers will have you use the first 3 (3.14)
Step-by-step explanation:
The first 100 digits of pi are: 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 74944 59230 78164 06286 20899 86280 34825 34211 7067.
the ones i can remember from the top of my head is 3.14159265 and the full is 3.14159265359
Paul surveyed 200 randomly selected people in the mall and asked them what genre of movie they prefer. Their
results are shown in the bar graph.
The height of a triangle is 6 cm and area of the triangle is 24 cm^2. What is the length of the base of the triangle
Answer:
4cm
Step-by-step explanation:
24/6=4cm
In a class of 34 students…
> 12 study German
> 25 study Spanish
> 6 do not study either language
One student in the class is selected at random.
Find the probability that this student studies both languages.
Answer:
My answer to this question would be :
6 = 34 - (12+25) + X
6 = -3 + X
9 = X
The probability would be : 9/34 = 0.26
I am not really sure i will check it later and tell you .
I would be happy if you let me know it was wrong or not , too .