Answer:
1 /7
Step-by-step explanation:
Sample space =. (1, 2, 3, 4, 5, 6, 7, 8)
Odd numbers = (1, 3, 5, 7)
Probability of picking an odd number = number of odd numbers / sample space
P(odd number) = 4 / 8 = 1/2
Without replacement :
P(picking a 2) :
Sample space = 8 - 1 = 2
Hence,
P(picking a 2) = 2 / 7
P(picking an odd number and the a 2) =
1/2 * 2/7 = 2 /14 = 1/7
What type of seismic waves can travel through the center of the Earth and be picked up by a seismograph on the other side of the world?
Answer: primary waves
Step-by-step explanation: pressure waves that travel faster than other waves through the earth to arrive at seismograph stations first, hence the name "Primary". These waves can travel through any type of material, including fluids, and can travel nearly 1.7 times faster than the S-waves.
I’ll give the Brainliest to who answers these questions with reasonable explanations.
1. A bag has 16 marbles in it: 6 red, 4 blue, 3 yellow, and 3 green. A marble is drawn and put back, and then another marble is drawn. What is the probability that a blue marble was drawn followed by a yellow marble?
2. A bag has 16 marbles in it: 6 red, 4 blue, 3 yellow, and 3 green. A marble is drawn and not put back, and then another marble is drawn. What is the probability that a blue marble was drawn followed by a yellow marble?
Thank you.
Answer:
1. 0.0469 (4.d.p)
2. 0.05
Step-by-step explanation:
1. First we'll find the probability of drawing a blue marble.
P = (No. favourable events)/(Total events)
In this case it's:
P = (No. blue marbles)/(Total Marbles)
Therefore P(Blue) = 4/16 = 0.25
Now we find the probability of drawing a yellow marble:
The total number will be the same because the blue marble will have been put back.
P(Yellow) = 3/16 = 0.1875
Now, since we are calculating the probability of both happening we multiply together the two individual probabilities to get the combined probability of both:
0.25 x 0.1875 = 0.0469 (4.d.p)
2. The probability of drawing a blue marble is still the same so we can keep that: P(Blue) = 0.25
But this time, the marble is not replaced. This means that the total number of marbles has changed when drawing the yellow marble:
P(Yellow) = 3/15 = 0.2
Now we multiply them together again to find the combined probability of both happening:
0.25 x 0.2 = 0.05
Hope this helped!
Find the value of two numbers if their sum is 19 and and their difference is 5
Answer:
7 and 12
Step-by-step explanation:
x - y = 5
y = (5+x)
x+ (5+x) = 19
2x +5 = 19
2x = 14
x = 7
19-7 = 12
12 +7 = 19
12-7 = 5
Cube numbers between 100 and 400
Answer with step-by-step explanation:
Let us find the perfect cubes between 1 to 100.
We know that, 1
3
=1,2
3
=8,3
3
=27,4
3
=64 and the rest numbers i.e. 4,5,6,.... have their cubes greater than 100.
So, only these four numbers have their cubes between 1 to 100.
Thus, there are 4 perfect cubes from 1 to 100.
Now, let's find the cubes between −100 to 0
We know, 0
3
=0,(−1)
3
=−1,(−2)
3
=−8,(−3)
3
=−27,(−4)
3
=−64 and the rest numbers have their cubes less than −100
So, only these 5 numbers have their cubes between −100 to 0 and 4 perfect cubes are there from 1 to 100.
Thus, there are 9 perfect cubes from −100 to 100.
plz mark me as brainliest.
Answer:
Step-by-step explanation:
3
=1,2
3
=8,3
3
=27,4
3
=64
The rest numbers i.e. 4,5,6,.... have their cubes greater than 100.
So, only these four numbers have their cubes between 1 to 100.
Thus, there are 4 perfect cubes from 1 to 100.
Now, let's find the cubes between −100 to 0
3
=0,(−1)
3
=−1,(−2)
3
=−8,(−3)
3
=−27,(−4)
3
=−64 and the rest numbers have their cubes less than −100
So, only these 5 numbers have their cubes between −100 to 0 and 4 perfect cubes are there from 1 to 100.
Thus, there are 9 perfect cubes from −100 to 100.
can I be brainliest?
PLEASE HELP !!
Find the probability of a choosing a student that is taking a foreign language, given that the student is playing a sport using the Venn Diagram below.
Answer:
either B or C I think
Pleaseeeeeee helpppppppp
Last year, Nicholas started babysitting to earn extra spending money. Over the summer, he tracked how much money he earned at each babysitting jobThis box plot shows the results What percent of the time did Nicholas earn $25 or less?
Answer:
25%
Step-by-step explanation:
The 5 values of the given box plot are;
The minimum value = 20
The first quartile, the 25th percentile point, Q₁ = 25
The median or second quartile, the 50th percentile point, Q₂ = 30
The third quartile, the 75th percentile point, Q₃ = 40
The maximum value = 55
The range = The maximum value - The minimum value
∴ The range = 55 - 20 = 35
We note that Nicholas earned $25 or less from the minimum value up to first quartile, Q₁, which is the 25th percentile point, where we have 25 percent of the data points
Therefore, the percent of the time Nicholas earned $25 or less is 25 percent of the time.
3v² - 54v + 240 = 0
Factoring
Answer:
v = 10 , 8
Step-by-step explanation:
please help me do it i cant get it
I'm taking boyf applications...Ima boy who likes boys btw
add me on discord
h33ern#9874
Answer:
no one cares
Step-by-step explanation:
simply, no one gives a sh1t!
Answer:
Step-by-step noitanalpxe:
cewl
(I’ll mark brainliest ) The cross country running team is hosting their first home race and needs to plan and set up the course. The only tool available to record the distance measures in feet. If the course must be at least 3 miles but no more than 3.2 miles in length, what is the smallest and the largest number of feet they must walk in order to fulfill the requirements?
1 mile 5,280 feet.
Smallest:
Largest:
Answer:
Smallest: 15,840 ft
Largest: 16,896 ft
Step-by-step explanation:
1 mi = 5,280 ft
Setup proportion to solve for the smallest:
[tex]\frac{1mi}{5,280ft} =\frac{3mi}{xft}[/tex]
Do butterfly method and you should get this:
[tex]xft=3(5280)\\x=15,840ft[/tex]
Setup proportion to solve for the largest:
[tex]\frac{1mi}{5,280ft} =\frac{3.2mi}{xft}[/tex]
Butterfly method:
[tex]xft=3.2(5280)\\x=16,896ft[/tex]
If you place a 39-foot ladder against the top of a building and the bottom of the
ladder is 33 feet from the bottom of the building, how tall is the building? Round to
the nearest tenth of a foot.
The ladder and the top of the building form a right triangle
The building is 20.8 feet tall
`How to determine the height of the building?The given parameters are:
Length of ladder, L = 39 feetHorizontal distance (b) = 33 feetThe height (h) of the building is calculated using the following Pythagoras theorem
L^2 = b^2 + h^2
So, we have:
39^2 = 33^2 + h^2
Evaluate the exponent
1521 = 1089 + h^2
Rewrite as:
h^2 = 1521 - 1089
h^2 = 432
Take the square root of both sides
h = 20.8
Hence, the building is 20.8 feet tall
Read more about right triangles at:
brainly.com/question/2437195
A theatre has 60 seats in the first row, 68 seats in the second row, 76 seats in the third row, and so on. Write the explicit formula for this problem.
Answer:
The formula is adding 8 for every row of seats.
Step-by-step explanation:
This is because the relationship between these numbers keep on adding 8 so for instance next row would have 84 seats.
Hope this is what your looking for.
Matthew is choosing between two Internet plans for his smart phone. Plan A costs $18 per month plus $0.05 per minute. Plan B costs $28 per month for unlimited usage. Please help me. Show all steps
Answer:
I would go with plan b because $0.05 can add up pretty fast and would be more expensive than $28
What is the measure of ∡U in the figure shown? ∘
Answer:
The answer to this question is 65
Answer:
65°
Step-by-step explanation:
180-50
=130
130/2
=65°
the other side is also 65 ° because this is an isosceles triangle.
In the following figure, the value of x is
B.
X
41°
с
11
A
Note: Round your answer to the nearest tenth.
Given:
In a right angle triangle ABC, [tex]m\angle B=90^\circ, BC=x, AC=11, m\angle C=41^\circ[/tex].
To find:
The value of x to the nearest tenth.
Solution:
In a right angle triangle,
[tex]\cos\theta =\dfrac{Adjacent}{Hypotenuse}[/tex]
In the given right angle triangle ABC,
[tex]\cos \angle C =\dfrac{BC}{AC}[/tex]
[tex]\cos (41^\circ) =\dfrac{x}{11}[/tex]
[tex]11(0.7547) =x[/tex]
[tex]8.3017 =x[/tex]
Round the answer to the nearest tenth.
[tex]x\approx 8.3[/tex]
Therefore, the value of x is 8.3 units.
The midpoint of AB isM(2,5). If the coordinates of A are (−3,6), what are the coordinates of B?
Answer:
(7,4)
Step-by-step explanation:
Midpoint Formula = [tex](x_{1} + x_{2}/2)=[/tex] x coordinate of midpoint
same for y coordinate of midpoint
so
2=-3+x/2
4=-3+x
x=7
for y
5=6+y/2
10=6+y
y=4
therefore B(7,4)
In cabbage butterflies, white wings (W) are dominant to yellow wings (w). A heterozygous butterfly mates with a butterfly that has yellow wings. Complete the Punnett square and then list the percentages of the expected genotypes for their offspring.
Answer:
(a)
[tex]\begin{array}{ccc}{} & {W} & {w} & {w} & {Ww } & {ww } & {w} & { Ww} & {ww } \ \end{array}[/tex]
(b)
[tex]White = 50\%[/tex]
[tex]Yellow = 50\%[/tex]
Step-by-step explanation:
See attachment for initial punnet square
Solving (a): Complete the square
Initially, we have:
[tex]\begin{array}{ccc}{} & {W} & {w} & {w} & { } & { } & {w} & { } & { } \ \end{array}[/tex]
To complete the square, we simply write the letter at the column and the letter at the row in each cell;
So, we have:
[tex]\begin{array}{ccc}{} & {W} & {w} & {w} & {Ww } & {ww } & {w} & { Ww} & {ww } \ \end{array}[/tex]
Solving (b): Percentage of each
From the question, we understand that W are dominant to w.
So:
[tex]Ww = White[/tex]
[tex]ww = Yellow[/tex]
From (a) above
[tex]Ww = 2[/tex]
[tex]ww = 2[/tex]
[tex]Total = 4[/tex]
So, the percentage of each is:
[tex]White = \frac{Ww}{Total} * 100\%[/tex]
[tex]White = \frac{2}{4} * 100\%[/tex]
[tex]White = 0.5 * 100\%[/tex]
[tex]White = 50\%[/tex]
[tex]Yellow = 100\% - White[/tex] --- Complement rule
[tex]Yellow = 100\% - 50\%[/tex]
[tex]Yellow = 50\%[/tex]
How many four letter words can be made from the letters X, B, O, M, T?
Answer:
tombexplanation:
thats it
can someone plz help me.
Answer:7 hours
Step-by-step explanation:
Word Problem. Genius's Please Answer.
Answer:
15 , 20
Step-by-step explanation:
6 × 8 = 48
48 + 72 = 120
120 ÷ 48 = 2.5
>>>>>>>
6 × 2.5 = 15
8 × 2.5 = 20
Answer:
15 , 20
Step-by-step explanation:
6 × 8 = 48
48 + 72 = 120
120 ÷ 48 = 2.5
>>>>>>>
6 × 2.5 = 15
8 × 2.5 = 20
Which expression is equivalent to -8 - (-12)
8 - 12
-8 + 12
-8 - 12
-8 (8+12)
I need help with this too it’s confusing and I don’t understand it.
632x27 and explaination
Jill wants to make another rectangular prism exactly like the one below. How many unit cubes will she needs to make the prism? Answer this correctly and I will give brainliest!
Answer:
32
Step-by-step explanation:
count each cube and it equals 32
Maria writes the expression below. 21 + 3 + 6 + 9 − 3 Which expression could be shown to be equivalent to Maria's expression based on the commutative property of addition? Immersive Reader (20 Points) 12( + 2) 3( + 3) + 3(7 + 2 − 1) 3 + 9 + 21 + 6 − 3 3(7 + + 2 + 3 − 1)
Answer:
expresion happy
Step-by-step explanation:
pleeease help meeeeee
Answer:
B
Step-by-step explanation:
...... ..... ..... .....
Which of the following expressions is not equal to 64?
A. 2^4 . 2^-3 .2^4 .2
B. 2^2 .2^8 .2^-4 .2^0
C.2^0 .2 . 2^2 .2^3
D. 2^6 . 2^-3 . 2^4 . 2
Answer:
A. 2^4 . 2^-3 . 2^4 . 2
Step-by-step explanation:
Option A,
2^4 . 2^-3 . 2^4 . 2
= 2^4 . 2^-3 . 2^4 . 2^1
= 2^( 4 + 4 + 1 - 3 )
= 2^( 9 - 3 )
= 2^6
= 64
So, Option A is the correct answer.
abc or d ??!!!!!!!!!!!!!!! n
Write a math problem that includes multiplying decimals.Explain how you know where to place the decimal in the product.
Answer:
0.1 x 2 = 0.2
Step-by-step explanation:
when you multiply, you move the decimal once because there is one decimal place.
Ruchi covers 3.25 Kilometres in 50 minutes. How much distance will she cover in Metres in 94 minutes?
Answer:
Distance covered by Ruchi = 61.1 km
Step-by-step explanation:
Formula of the Speed is given by,
Speed = [tex]\frac{\text{Distance covered}}{\text{Time taken}}[/tex]
Since, Ruchi coves distance = 3.25 km
Time taken to cove this distance = 50 minutes
Therefore, speed of Ruchi = [tex]\frac{3.25}{50}[/tex]
= 0.65 km per minute
Therefore, distance covered by Ruchi in 94 minutes,
0.65 = [tex]\frac{\text{Distance covered}}{94}[/tex]
Distance covered = 0.65 × 94
= 61.1 km