The answer would be A
If a coin is flipped 10 times then the probability that it will show all heads or all tails is 1/512.
What is Probability?It is a branch of mathematics that deals with the occurrence of a random event.
The probability of getting all heads or all tails on 10 flips in a row is the sum of the probabilities of getting all heads and getting all tails.
P(all heads or all tails) = P(all heads) + P(all tails)
Since the coin flips are independent events, we can use the multiplication rule to find the probability of getting all heads or all tails:
P(all heads) = (1/2)¹⁰ = 1/1024
P(all tails) = (1/2)¹⁰ = 1/1024
So, the probability of getting all heads or all tails is:
P(all heads or all tails) = P(all heads) + P(all tails)
= 1/1024 + 1/1024
= 1/512
Therefore, if a coin is flipped 10 times then the probability that it will show all heads or all tails is 1/512.
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How many hours will it take to complete a 76km bike ride if you go bike ride if you go 14km per hour the whole time?
To find the number of hours, divide the total distance by the speed.
Hours = 76 km / 14 km per hour
Hours = 4.529
Round the answer as needed.
A tree casts a shadow of 24 feet at the same time as a 5-foot tall man casts a shadow of 4 feet. Find the height of the tree. Note that the two triangles are proportional to one another.
Answer:
30 ft
Step-by-step explanation:
Let the height of the tree be x ft. There are two right triangles:
1. Tree and its shadow are two legs of the first triangle;
2. Man and his shadow are two legs of the second triangle.
A tree casts a shadow of 24 feet at the same time as a 5-foot tall man casts a shadow of 4 feet. This means these two triangle are similar. Similar triangles have proportional sides' lengths. Hence,
[tex]\dfrac{\text{tree}}{\text{tree shadow}}=\dfrac{\text{man}}{\text{man's shadow}}\\ \\\dfrac{x}{24}=\dfrac{5}{4}\\ \\4\cdot x=5\cdot 24\\ \\x=\dfrac{5\cdot 24}{4}=5\cdot 6=30\ ft[/tex]
Answer:
30 feet
Step-by-step explanation:
We are given that a tree casts a shadow of 24 feet at the same time as a 5-foot tall man casts a shadow of 4 feet.
We are to find the height of the tree.
Using their proportions to compare the height of each object to the length of the shadow.
[tex]\frac{h}{24} =\frac{5}{4}[/tex]
[tex]h=\frac{5\times24}{4}[/tex]
[tex]h=30[/tex]
Therefore, the height of the tree is proportion comparing the height of each object to the length of the shadow 30 feet.
Which equation has a solution of all real numbers
Answer:
There is few equation that has a solution of all real numbers like this picture
,
What is the value of the expression....
The right answer is Nine.
Answer:
The answer is 9.
Step-by-step explanation:
If you substitute a and b with the numbers given, the equation you'll have to solve is: 2(5)+2-3.
2(5)=10 and 2-3=-1
Once you subtract 10-1, the answer would be 9.
Solve the equation for the interval
Answer:
x=0,3π/2,π
Step-by-step explanation:
Given
sin^2 x+sinx=0
sin x is a common factor
so,
sinx (sinx+1)=0
We can put both factors one by one equal to zero
sinx=0
x= sin^(-1)0
sinx is zero at 0 and π
x=0,π
sinx+1=0
sinx= -1
x= sin^(-1)(-1)
sin is -1 for 3π/2
So,
x=3π/2
So,
x=0,3π/2,π
HELP ME PLZZ This is a shape whose base is a circle and whose sides taper up to a point.
the shape of the above image is conical
The shape is a cone.
if line m bisects ab at point p, and if ap= 1/2y and PB = y - 2, then find ab
Answer:
AB = 4
Step-by-step explanation:
Since point P bisects AB, we have ...
AP = PB
y/2 = y - 2
0 = y/2 - 2 . . . . subtract y/2
0 = y - 4 . . . . . . multiply by 2
4 = y . . . . . . . . . add 4
Now, we can find AB:
AB = 2(AP) = 2(1/2y) = y
AB = 4
Jay on started off his penny collection with 1 penny. He then adds 5 pennies to his collection each day. How could you change the above scenario to make it a geometric series rather than an arithmetic series?
Answer:
By doubling each day
Step-by-step explanation:
Jay is increasing daily a fixed amount of pennies to his collection. That's an arithmetic series, because to obtain the next term you have to do an addition.
To get a geometric series or progression you have to find the next term through multiplication.
So, if he wants to convert his series into a geometric series, he'd have to double his contribution to his collection each day (as an example).
Do you know what this means? And how do I solve it?
a and b are matrices
If $75 is invested at an interest rate of 8% per year and is compounded monthly, how much money is in the account in 15 years?
Answer:
$248.03
Step-by-step explanation:
The formula you use for this is as follows:
[tex]A(t)=P(1+\frac{r}{n})^{nt}[/tex]
where A(t) is the amount after the compounding is done, P is the initial amount invested, r is the interest rate in decimal form, n is the number of times the compounding is done per year, and t is the time in years. Using that information and filling in our equation gives us this:
[tex]A(t)=75(1+\frac{.08}{12})^{(12)(15)}[/tex]
which simplifies down to
[tex]A(t)=75(1+.0066667)^{180}[/tex]
which simplifies further to
[tex]A(t)=75(3.307118585)[/tex]
which multiplies to $248.0338938. Round to the nearest cent to get your answer.
The amount of money is $248.02.
Principal amount = P=75
Interest rate = r = 8% = 0.08
Number of years = t = 15
Number of times compounded in a year = n = 12
A = Amount after t years.
After 15 years there will be:
[tex]A=P\left(1+\frac{r}{n}\right)^{nt}\\ A=75\left(1+\frac{0.08}{12}\right)^{\left(12\cdot15\right)}\\ A=248.019110806\\ A \approx 248.02[/tex]
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12. What is the diameter of a circle when the circumference is 75.4 inches?
A. 12.0 inches
B. 24.0 inches
C. 27.3 inches
D. 37.7 inches
Show Your Work
Answer:
b
Step-by-step explanation:
24*pi=75.4
circumference is found when diameter is multiplied by pi
The diameter is 12 inches.
Option A is the correct answer.
What is a circle?A circle is a two-dimensional figure with a radius and circumference of 2πr.
The area of a circle is πr².
The diameter of the circle is 2r.
The equation of a circle is also written as,
(x - h)² + (y - k)² = r²
Where r is the radius and (h, k) is the center of the circle.
We have,
Circumference of the circle = 75.4 in
This means,
2πr = 75.4
r = 75.4/(2 x 3.14)
r = 75.4 / 6.28
r = 12 in
Diameter of the circle.
= 2r
= 2 x 12
= 24 in
Thus,
The diameter is 12 inches.
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20 Points PLEASE Hep .Factorize this
h(t) = -16x^+72x
( negative 16 squared plus 72x )
Answer:
-8x(2x - 9)
Step-by-step explanation:
-16x² + 72x
GCF = 8x
8x(16x² / 8x, -7x/8x)
-8x(2x - 9)
hope this helps!!
The answer would be -8x(2x-9)
How do you use the digits in a hundredths decimal to write a percent?
Explanation:
"Percent" literally means "per hundred" or "divided by 100". The percent symbol (%) is a shorthand way to write /100 ("divided by 100," or "hundredths"). So, hundredths and percent are essentially the same thing.
Given a "hundredths decimal", move the decimal point 2 places to the right and add a % symbol. (Moving the decimal point multiplies the number by 100; adding the % symbol divides it by 100, so the end result is the same value written in a different form.)
Example:
19% = 19/100 = 0.19 . . . . (nineteen percent = nineteen hundredths)
and in the other direction, ...
0.53 = 53/100 = 53% . . . . (fifty-three hundredths = fifty-three percent)
Answer:
"Percent" literally means "per hundred" or "divided by 100". The percent symbol (%) is a shorthand way to write /100 ("divided by 100," or "hundredths"). So, hundredths and percent are essentially the same thing. Given a "hundredths decimal", move the decimal point 2 places to the right and add a % symbol.
Someone explain to me how to do this
Answer:
14.9 cm
Step-by-step explanation:
The side of interest is opposite an angle that is not marked. You find the value of that angle by making use of the fact that the sum of angles of a triangle is 180°.
C = 180° -150° -12° = 18°
Now, fill in the available information in the given formula for the Law of Sines and solve for c:
sin(B)/b = sin(C)/c
sin(12°)/(10 cm) = sin(18°)/c
Cross multiply:
c·sin(12°) = (10 cm)·sin(18°)
Divide by the coefficient of c:
c = (10 cm)·sin(18°)/sin(12°) ≈ 14.9 cm
Which expression is equivalent to -1/3 (6X +15) -3
[tex] \frac{ - 1}{3} (6x + 15) - 3 \\ \\ 1. \: \frac{ - 6x + 15}{3} - 3 \\ 2. \: \frac{ - 3(2x + 5)}{3} - 3 \\ 3. \: - (2x + 5) - 3 \\ 4. \: - 2x - 5 - 3 \\ 5. \: - 2x + ( - 5 - 3) \\ 6. \: - 2x - 8[/tex]
Final answer:
To simplify -1/3 (6X +15) -3, distribute the -1/3 across the parentheses to get -2X - 5, and then subtract 3 to get the equivalent expression: -2X - 8.
Explanation:
The student's question is asking for the equivalent expression of -1/3 (6X +15) -3. To find the equivalent expression, we start by distributing the -1/3 across the parentheses:
-1/3 × 6X = -2X
-1/3 × 15 = -5
Next, we combine this result with the -3 that is outside of the parentheses:
-2X - 5 - 3 = -2X - 8
Therefore, the equivalent expression is -2X - 8.
Please help and find what the value of x is
Answer:
x=30
Step-by-step explanation:
53+97+x=180
150+x=180
x=30
The sum of all the angles of a triangle is 180 degrees.
Add all the angles together and set it equal to 180, then solve for x
53 + 97 + x = 180
(150-150) + x = 180 -150
x = 30
Hope this helped!
Garry is studying a square pyramid and wants to draw a net of the figure to help determine its surface area. Which net represents a square pyramid?please hurry than you
The net represents a square pyramid is a net with a square base and 4 triangular sides.
What is a square pyramid?A square pyramid is a pyramid with a square base in geometry. A right square pyramid is one with the tip perpendicular to the square's centre.
There will be five surfaces in the pyramid the base is square and the remaining four will be triangular.
Hence net represents a square pyramid is a net with a square base and 4 triangular sides.
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Graph the equations to find the solution(s) to the system.
y = x - 1
y = 1/3(x + 2)(x - 4)
To solve the system of equations, graph the linear equation y = x - 1 and the quadratic equation y = 1/3(x + 2)(x - 4) on the same axes. Look for intersection points between the line and the parabola, which represent the solution(s) to the system. The number of intersections can vary, indicating how many solutions exist.
Explanation:The question involves solving a system of equations:
y = x - 1y = 1/3(x + 2)(x - 4)To find the solution(s), we plot both equations on the same graph and look for intersection points. The first equation, y = x - 1, represents a straight line with a slope of 1 and a y-intercept of -1. For the second equation, y = 1/3(x + 2)(x - 4), it represents a parabola that opens upwards because the coefficient of the x^2 term (which is derived from expanding the equation) is positive. The roots (zeroes) are at x = -2 and x = 4, giving us points where the parabola crosses the x-axis.
To graph these, start with the linear equation by plotting the y-intercept (0, -1) and then using the slope to find another point (for example, (1, 0)). Plot these points and draw a straight line through them. For the quadratic equation, plot the roots (-2, 0) and (4, 0) and find the vertex by computing the axis of symmetry and the maximum or minimum value of y by substituting back into the equation. Sketch the parabola based on these points.
The solution(s) to the system are where the line and the parabola intersect. Depending on the exact shape of the parabola, there might be two, one or no intersection points, representing the solution(s).
Answer:
The solutions to the system of equations are (-0.85, -1.85) and (5.85, 4.85).
Step-by-step explanation:
The system of equations is a set of multiple equations. The solution to a system of equations is the set of all points which make all equations in the system true. The greatest amount of solutions possible in a system is equal to the highest degree present in it.
To find the solutions of a system of equations through graphing, graph all equations in the system and note the locations where they intersect. These are the points where all equations are true, aka the solutions. In this system, there are two points of intersection at (-0.85, -1.85) and (5.85, 4.85).
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Please help me on this
Answer:
cos∠FHE = 4/5
Step-by-step explanation:
* Lets revise the trigonometry functions
- In ΔABC
# m∠B = 90°
# Length of AB = a , length of BC = b and length of AC = c
# The trigonometry functions of angle C are
- sin(C) = a/c ⇒ opposite side to ∠C ÷ the hypotenuse
- cos(C) = b/c ⇒ adjacent side to ∠C ÷ the hypotenuse
- tan(c) = a/b ⇒ opposite side to ∠C ÷ adjacent side to ∠C
* Now lets solve the problem
- To find cos∠FHE , we must find the length of the adjacent
side HF and the length of the hypotenuse HE
- We can find the length of HF from ΔFGH
- In ΔFGH
∵ m∠G = 90°
∵ GF = √8
∵ m∠GHF = 45°
∵ sin∠GHF = GF/HF
∴ sin45° = √8/HF ⇒ by using cross-multiplication
∴ HF × sin45° = √8
∵ sin45° = 1/√2
∴ HF × 1/√2 = √8 ⇒ multiply each side by √2
∴ HF = √2 × √8 = √16 = 4
* Lets find the length of HE from ΔHFE
- In ΔHFE
∵ m∠HFE = 90°
∵ EF = 3 ⇒ given
∵ HF = 4
- By using Pythagoras theorem
∵ HE = √(FH² + FE²)
∴ HE = √(4² + 3²) = √(16 + 9) = √25 = 5
* Now we can find cos∠FHE
∵ cos∠FHE = HF/HE
∵ HF = 4 and HE = 5
∴ cos∠FHE = 4/5
PLEASE HELP ASAP WILL MARK BRAINLIEST FOR THESE ANSWERS!!! PLEASE I NEED TO PASS
Answer:
First one is 64
Step-by-step explanation:
A store sells shirts to the public at one pricing scale and wholesale at another pricing scale.
Answer:
Option B is correct.
Step-by-step explanation:
The slope for public sales:
[tex]m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}} \\[/tex]
here x₁ = 2 , x₂= 5 , y₁=24, y₂= 60
[tex]m= \frac{60-24}{5-2}\\ m= \frac{36}{3}\\ m=12[/tex]
The slope for Wholesale sales:
[tex]m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}} \\[/tex]
here x₁ = 18 , x₂= 35 , y₁=162, y₂= 315
[tex]m= \frac{315-162}{35-18}\\ m= \frac{153}{17}\\ m=9[/tex]
Now, comparing slopes of wholesales sale and Public sales
9:12
0r
3:4
3:4 can be written as 3/4.
So, Option B The slope of wholesale table is 3/4 times of the slope of the Public table is correct.
Answer:
b
Step-by-step explanation:
took quiz on edge
Given: m∠EYL=72°
Find: mEHL , mLVE
Answer:
Part 1) The measure of arc EHL is [tex]108\°[/tex]
Part 2) The measure of angle LVE is [tex]54\°[/tex]
Step-by-step explanation:
step 1
Let
x-----> the measure of arc EHL
y----> the measure of arc EVL
we know that
The measurement of the outer angle is the semi-difference of the arcs it encompasses.
so
[tex]m<EYL=\frac{1}{2}(y-x)[/tex]
we have
[tex]m<EYL=72\°[/tex]
substitute
[tex]72\°=\frac{1}{2}(y-x)[/tex]
[tex]144\°=(y-x)[/tex]
[tex]y=144\°+x[/tex] ------> equation A
Remember that
[tex]x+y=360\°[/tex] -----> equation B ( complete circle)
substitute equation A in equation B and solve for x
[tex]x+(144\°+x)=360\°[/tex]
[tex]2x=360\°-144\°[/tex]
[tex]x=216\°/2=108\°[/tex]
Find the value of y
[tex]y=144\°+x[/tex]
[tex]y=144\°+108\°=252\°[/tex]
therefore
The measure of arc EHL is [tex]108\°[/tex]
The measure of arc EVL is [tex]252\°[/tex]
step 2
Find the measure of angle LVE
we know that
The inscribed angle measures half that of the arc comprising
Let
x-----> the measure of arc EHL
[tex]m<LVE=\frac{1}{2}(x)[/tex]
we have
[tex]x=108\°[/tex]
substitute
[tex]m<LVE=\frac{1}{2}(108\°)=54\°[/tex]
Elanor paints this figure on her wall. Find the area of the figure.
Answer: Your answer would be 59.5
Please help me last question
Answer:
The letters in the word glacier can be arranged in 5040 different ways
Step-by-step explanation:
As there are 7 letters in the word glacier, that means that the number of ways would be 7!
This can also be written as
[tex]7*6*5*4*3*2*1=5040[/tex]
The letters in the word glacier can be arranged in 5040 different ways.
What is permutation?When the order of the arrangements counts, a permutation is a mathematical technique that establishes the total number of alternative arrangements in a collection. Choosing only a few items from a collection of options in a specific sequence is a common task in arithmetic problems.
A permutation of a set exists, loosely articulating, an arrangement of its members into a sequence or linear order, or if the set exists already contained, a rearrangement of its elements.
Given,
As there are 7 letters in the word glacier, that means that the number of ways would be 7!
This can also be written as
7*6*5*4*3*2*1 = 5040
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The ratio of dogs to cats in the neighborhood was 3 to 7. If a total of 210 dogs and cats were in the neighborhood, how many cats were there? Use a proportion.
Final answer:
The number of cats in the neighborhood can be found by using the given ratio of dogs to cats, 3 to 7, and the total number of animals, 210. The calculations lead to a result of 147 cats.
Explanation:
To find the number of cats in the neighborhood, we can set up a proportion using the given ratio of dogs to cats, which is 3 to 7. We know that the total number of dogs and cats is 210. Let's assume the number of cats is 7x and the number of dogs is 3x.
So, 3x + 7x = 210. Combining like terms, we get 10x = 210. Dividing both sides by 10, we find that x = 21. Now, to find the number of cats, we multiply 7x by 21, which gives us 147 cats.
Therefore, there are 147 cats in the neighborhood.
The difference between twice an angle's measure and it's supplement is 27. find the measure of the angle
x and y are supplementary angles
x - y = 27
x + y = 180
--------------------- We add the equations:
2x / = 207
2x = 207
x = 207/2
x = 103.5° = 103° : 30 miny = 180° - 103.5° = 76.5° = 76° : 30minFinal answer:
To find the angle measure, set up the equation 2x - (180 - x) = 27, simplify to 3x = 207, and solve to find that x = 69 degrees.
Explanation:
The question asks to find the measure of an angle where the difference between twice the angle's measure and its supplement is 27. To solve this, let's designate the measure of the angle as x. Since the angle's supplement will be 180° - x, we can set up the equation 2x - (180° - x) = 27. Simplifying this equation, we get 2x - 180° + x = 27, which simplifies further to 3x = 207°. Dividing both sides of the equation by 3, we find that x = 69°. Therefore, the measure of the angle is 69 degrees.
The dot plot shows the number of attempts each basketball player took to make a three-point shot.
Select from the drop-down menus to correctly complete the statement.
The distribution of data is (approximately normal-skewed left-skewed right) , with a mode of (#) , and a range of (#) .
Answer:
The distribution of data is (approximately normal-skewed left-skewed right) , with a mode of (7 ) , and a range of (8 )
Step-by-step explanation:
The data distribution is a normal skewed right with a range of (8) and a mode of (7).
What is the mode?Mode is the most frequently used number.
From the dot plot, it is observed that on the data 7th player took 6 attempts. Which is the greatest. The mode of the data distribution is 7.
The range of the data is the difference between the maximum and the minimum value.
Range = 9-1
Range=8
From the dot plot, it is observed that the maximum value is toward the right. So that it is right-skewed.
Hence, the data distribution is a normal skewed right) with a range of (8) and a mode of (7).
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A vehicle factory manufactures cars. The unit cost c (the cost in dollars to make each car) depends on the number of cars made. If x cars are made, then the unit cost is given by the function c(x)=1.1x^2-660x+107,357. How many cars must be made to minimize the unit cost?
Do not round your answer.
Answer:
300
Step-by-step explanation:
The vertex of quadratic ax^2 +bx+c is on the line x=-b/(2a). This unit cost function defines a parabola opening upward, so its vertex is its minimum. The location of the vertex is ...
x = -(-660)/(2·1.1) = 660/2.2 = 300
300 cars must be made to minimize the unit cost.
_____
Note:
The unit cost at that production level will be $8357.
Expand (x+3)^3 and simplify how to do this
Answer:
x^3 +9x^2 +27x +27
Step-by-step explanation:
The expansion of a power of a binomial looks like ...
(a +b)^n = nC0·a^n·b^0 + nC1·a^(n-1)·b^1 + nC2·a^(n-2)·b^2 + ... + nC(n-1)·a^1·b^(n-1) + nCn·a^0·b^n
Of course, nCk = n!/(k!·(n-k)!) and a^0 = b^0 = 1. The list of coefficients nCk corresponds to a row of Pascal's triangle (see attached).
For n=3, this is ...
(a +b)^3 = a^3 +3a^2b +3ab^2 +b^3
You have a=x and b=3, so the expansion is ...
(x +3)^3 = x^3 +3·x^2·3 +3·x·3^2 +3^3
= x^3 +9x^2 +27x +27
In a study conducted at Virginia Tech on the development of ectomycorrhizal, a symbiotic relationship between the roots of trees and a fungus, in whichminerals are transferred from the fungus to the trees and sugars from the trees to the fungus, 20 northern red oak seedlings exposed to the fungus Pisolithus tinctoruswere grown in a greenhouse. All seedlings were planted in the same type of soil and received the same amount of sunshine and water. Half received no nitrogen atplanting time, to serve as a control, and the other half received 368 ppm of nitrogen in the form NaNO3. The stem weights, in grams, at the end of 140days were recorded as follows:No Nitrogen Nitrogen0.32 0.260.53 0.430.28 0.470.37 0.490.47 0.520.43 0.750.36 0.790.42 0.860.38 0.620.43 0.46Construct a 95% confidence interval for the difference in the mean stem weight between seedlings that receive no nitrogen and thosethat receive 368 ppm of nitrogen. Assume the populations to be normally distributed with equal variances.
To construct a 95% confidence interval for the difference in mean stem weight between seedlings that received no nitrogen and seedlings that received 368 ppm of nitrogen, calculate the mean stem weight for each group, the sample standard deviation, the standard error, and the margin of error. Then, calculate the lower and upper bounds of the confidence interval.
Explanation:To construct a 95% confidence interval for the difference in mean stem weight between seedlings that received no nitrogen and seedlings that received 368 ppm of nitrogen, we will use a t-distribution and the formula for calculating a confidence interval for the difference in means. First, we find the mean stem weight for each group and calculate the sample standard deviation. Then, we calculate the standard error and the margin of error. Finally, we calculate the lower and upper bounds of the confidence interval.
Calculate the mean stem weight for each group:Therefore, the 95% confidence interval for the difference in mean stem weight between seedlings that received no nitrogen and seedlings that received 368 ppm of nitrogen is approximately (-0.292, -0.052). This means we can be confident that the mean stem weight of seedlings that received no nitrogen is lower than the mean stem weight of seedlings that received 368 ppm of nitrogen.
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