Answer: as a ratio it’s 140:210 and as a simplified fraction it’s 2/3. But not simplified it’s still 140/210
Step-by-step explanation:
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. What is the probability that a student has a brother given that they do not have a sister?
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:
brainly.com/question/11234923
#SPJ2
PLEASEEE HELP ASAP ITS IMPORTANT !!!!
Answer:
The rate of change in the table is 78 students per year
Step-by-step explanation:
Here, we want to get the rate of change of the function
Mathematically, we can get this by using the formula;
m = (y2-y1)/(x2-x1)
(x1,y1) and (x2,y2) are points we are to select from the table
Let us select the point (4,704) and (17,1718) from the table
The slope is thus;
m = (1718-704)/(17-4) = 78 students per year
Find the volume of a pyramid with a square base, where the perimeter of the base is 6.9 cm and the height of the pyramid is 2.8 cm. Round your answer to the nearest tenth of a cubic centimeter.
Answer:
V=2.8cm^3
Step-by-step explanation:
The volume of a pyramid with a square base should be considered as the 2.8 cubic centimeter.
Calculation of the pyramid:Since
perimeter of the base is 6.9 cm and the height of the pyramid is 2.8 cm.
So, here
we know that
volume of a pyramid = [tex]1/3(length * width * height)[/tex]
And,
perimeter of a square = [tex]4 * length[/tex]
6.9 = 4 x length
So,
length = 1.725
Now the volume is
[tex]= 1/3 * (1.725 * 1.725 * 2.8)[/tex]
= 2.8
Learn more about volume here: https://brainly.com/question/12497184
loooook below giving brainliest
Answer:
32.5 is the correct answer
What is the length, in units, of segment CD?
5.50
12.25
8
14
Answer:
d
Step-by-step explanation:
The answer is C.
Step-by-step explanation:
First, you have to find the angle of ACB using Sine Rule, sinθ = opposite/hypotenuse :
Given that line AB is parallel to line CD so ∠C = 90°. Next, you have to find the angle of ACD :
Lastly, you can find the length of CD using Cosine rule, cosθ = adjacent/hypotenuse :
how can you determine if the association on scatter plot is strong or weak
Answer:
We say that a strong negative association exists between the variables x and y. Consider the following scatterplot: We observe that y increases as x increases, and the points do not lie on a straight line. We say that a weak positive association exists between the variables x and y.
Step-by-step explanation:
Answer:
We say that a strong negative association exists between the variables x and y. Consider the following scatterplot: We observe that y increases as x increases, and the points do not lie on a straight line.
Step-by-step explanation:
The two lines represent the distance traveled, over time, by two trains. Which train is traveling more quickly?
huh show us a picture of it or something,
2 is what percent of 200
Answer:
1%
divided 2/ 200 and your answer as a persent is 1%
Step-by-step explanation:
may i get brainliest i need 1 more?
2 is 1 percent of 200.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Let 2 is x% of 200.
Now, x% of 200 =2
x/100 ×200 =2
200x=200
x=1
Therefore, 2 is 1 percent of 200.
To learn more about the percentage visit:
brainly.com/question/24159063.
#SPJ6
Pls help me pls I’ll give brainliest pls dont answer if you don’t know
Answer:
x=-2
Step-by-step explanation:
Like terms are terms that are like each other
2x and x both have x
3 and 9 are both constants
Move them so they are next to each other
-2x-x=9-3
-3x=6
x=-2
HELP!! I DON't HAVE MUCH TIME
for part of a recipe jada adds 0.35 milliliters of vanilla extract to 16.4 milliliters of milk. How many milliliters does the mixture contain??
State whether 2.5 + π is rational or irrational. Explain.
Answer: 2.5 + π is an irrational number.
Step-by-step explanation:
Irrational numbers are numbers that can not be written as the quotient of two integer numbers, and they have an infinite number of digits after the decimal point (such that there is not periodicity in these digits).
So suppose that we have an irrational number and we add 1, then the infinite digits after the decimal point will still be there, so the sum will be also an irrational number.
The same can be seen for the sum between an irrational number and a rational number, where the infinite number of decimals after the decimal point will still be there (because the rational numbers have a finite or infinite but periodical decimals after the decimal point), so the sum between an irrational number and a rational number is always irrational.
In this case, we have the addition:
2.5 + π
Which is the sum of a rational number and an irrational number, so we can conclude that this is an irrational number.
There are 5,280 feet in 1 mlle. If Riley ran 26,400 feet, how many mlles did she run? [Type your answer as a number.]
miles
#BTS
#Bangtan
#BTS_Purple_Heart
Explain what the equation 3x = 6 means without using the word equal.
Explain why 2 is a solution of the equation
Step-by-step explanation:
1. 3 multiplied by x is the same value of 6
2. since 3x is on the left side we have to divide the equation by 3 on both sides which doesn't change the value of x, but it helps us get the value for x. so when you divide the equation by 3 the answer for x=6/2 which 2 divided by 6=3
Hope that helps :)
Answer:
Because 3x2=6
Step-by-step explanation:
The sum 9 of and x
??
what is greater 0.059 or .59
Answer:
.59
because 0.059 is 10 times greater i dont know lol its just common sense that its .59
Pls help I gat no idea on what the answer is
Answer:
the answer is A
Step-by-step explanation:
hope it helped
Multiply. −37xy(−35x3y2) Enter your answer in the box
Answer:
Hi! Your answer is 1295x^4y^3
Step-by-step explanation:
Simplify the expression.
Answer:
i got 15x^4y^3
Use the volume formula to find the volume of the prism.
2
21
22
O A. 64 cubic units
O B. 12 cubic units
O C. 7 cubic units
O D. 4 cubic units
PREVIOUS
1. Solve for n: n+5/16 = -1
(A) 96
(B) -96
(C) 21
(D) -21
How do you find the value of 35(10^-8)? Find the answer.
To find the value, you will need to use the Order of Operations (PEMDAS).
Answer:
Step-by-step explanation:
35(10⁻⁸) = 35(0.00000001) = 0.00000035
Box the greatest decimal and encircle the least decimal in each number.
1. 3.49 3.498 3.149 3.4
2. 333.5 333.56 33.356 3.987
3. 8.047 80.47 804.7 0.8047
4. 700.08 700.088 700.008
5. 0.123 0.457 0.127 0.0678
Answer:
From greatest to least
1) 3.498 3.49 3.4 3.149
2) 333.56 333.5 33.356 3.987
3) 804.7 80.47 8.047 0.8047
4) 700.088 700.08 700.008
5) 0.457 0.127 0.123 0.0678
Step-by-step explanation:
Explaining just 1st and 4th
1.The number 3.498 is bigger than 3.49 because it's basically this number 3.490
The same thing happens in 2nd and 3rd number 3.49 > 3.40
And the last number I think I don't have to explain :-)
4.700.088 is bigger because 700.08 is smaller
700.080
If you have any questions contact me on amino Ayleena
NEED HELP! find the slope of the line that passes through the two given points (-3,4) and (-3, -8)
Answer:
Y=0
Step-by-step explanation:
The x axis is the same making the line a horizontal line. A horizontal line has a slope of 0
You have 10 coins, all dimes and quarters. The value
of the coins is $1.75.
How many dimes do you have?
How many quarters do you have?
Answer:
The answer would be 5 of each.
Step-by-step explanation:
5 * .10 + 5 * .25 = $1.75
the radius of a circle is 1 inch . what is the circle's area
Step-by-step explanation:
area = pi × r²
= 3.14 × 1 × 1 = 3.14 inch²
Answer:
3.14
Step-by-step explanation:
A=πr2=π·12≈3.14159in²
Match each vertex in IJL to its corresponding vertex in the dashed triangle.
Answer:
Step-by-step explanation:
It’s LJK
PLEASE HELP ME this is due today
Caroline is planning on reducing her working schedule and only work 7 hours each day for 4 days a week work out the percentage reduction in Caroline's earnings if she decides to go ahead with her plan
The percentage reduction in Caroline's earnings if she decides to go ahead with her plan is 30%.
How to calculate the value?Since Caroline works 8 hours each day for 5 days a week and she's earns £11 per hour. The amount earned for the week is:
= (80 × 5 × £11)
= £440
When she is planning on reducing her working schedule and only work 7 hours each day for 4 days a week. The amount will be:
= (4 × 7 × £11)
= £308
The percentage reduction will be:
= Difference on amount / Old amount × 100
= (440 - 308) /440 × 100
= 132/440 × 100
= 0.3
= 30%
Learn more about earnings on:
brainly.com/question/25788016
#SPJ1
Caroline works 8 hours each day for 5 days a week. She's earns £11 per hour. Caroline is planning on reducing her working schedule and only work 7 hours each day for 4 days a week work out the percentage reduction in Caroline's earnings if she decides to go ahead with her plan
The ordered pairs (x, y) define the relation Q.
{(4, 5), (-3,2), (5,5), (, - 3)}
Is Q a function?
Answer:
A
Step-by-step explanation:
Yes, because there is exactly one x-value for every y-value.
Find the area and the circumference of a circle with diameter 8yd
Answer:
25.12
Step-by-step explanation:
c = 2 pi r
d = 8 so r = 4
c = 2 * 3.14 * 4
c = 25.12
Answer:
Step-by-step explanation:
Given
Diameter (d) = 8 yd
radius (r) = d/2 = 8/2 = 4
Now
Area = π * r²
= 3.14 * 4²
= 50.24 yd²
Circumference
= π * d
= 3.14 * 8
= 25.12 yd