The Recurrence interval for tornadoes in tuscaloosa county is 0.909
What is recurrence interval ?
The time period in which a new occurrence of something that happened or appeared before : a repeated occurrence or The time frame in which a previously occurring event or appearance first occurs: a recurring occurrence
Given that,
Total number of tornadoes is 77
Total time for Recurrence is 70 years
Using these data,
Recurrence = Total time for recurrence / Total number of tornadoes
Substituting we get,
Recurrence interval = 70/77
= (70/77)
= (0.909)
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George is building a fence. It takes him 1/2 an hour to build 1/3 of a section of a fence. At this rate, what fraction represents the section of fence George can build per hour? Express your answer as a fraction.
Answer:
2/3
Step-by-step explanation:
If 1/3 rd of the fence can be built in 1/2 hr then in 1 hour which is 1/2 x 2 the fraction of the fence that can be built is 1/3 x 2 = 2/3
HELP ME PLEASE!!! THANK U SO MUCH IF U HELP ME, UR HELP WILL BE APPRECIATED <3
Answer:
1b) in first image
1c) in second image
Solve y3 = 1.
answers are
y = −1
y = 1
y = ±1
y = 3
Answer:
Is y3 supposed to be y^3? Is so, the answer is 1.
Step-by-step explanation:
If the equation is correct as written, 3y = 1, then y = 1/3
y^3 = 1
This can also be written as y^2*y = 1
1. If y = -1, then y^2y would be (1)*(-1) = -1
2. If y = 1, then (1)^3 * (1) = 1 This works.
3. If y = ±1, then -1 is a possible answer and -1 does not work as per #1
4. 3^3 = 27
49 = 7/6u solve for u simplify your answer as much as possible
Answer:
Step-by-step explanation:
49 = 7/6u
49 * 6/7 = 7/6u * 6/7
42 = u
The measures of the angles of a triangle are shown in the figure below. Solve for x.
54°
(7x+1)°
Answer:
54 + (7x + 1) + 90 = 180° (sum of angles in triangle=180)
7x = 35
x = 5
Answer:
x = 5
Step-by-step explanation:
Geometry TheoryThis question deals with a right-angled triangle. The sum of the angles in a triangle is equal to 180 degrees. A right angle is equal to 90 degrees which means that the other two angles must equal to 90 degrees as well.
AlgebraForm the equation.
( 7x + 1 ) + 54 + 90 = 180;
Subtract 90 from both sides.
7x + 1 + 54 + 90 - 90 = 180 - 90;
7x + 1 + 54 = 90;
Simplify left-hand side.
7x + 55 = 90;
Subtract 55 from both sides.
7x + 55 - 55 = 90 - 55;
7x = 35;
Divide both sides by 7.
x = 35 / 7;
x = 5;
Luis wants to buy a skateboard that usually sells for $79.01. All merchandise is discounted by 12%. What is the total cost of the skateboard if Luis has to pay a state sales tax of 6.75%. Round your intermediate calculations and answer to the nearest cent. The total cost of the skateboard is?
The total cost of the skateboard after being discounted by 12% and then sales tax of 6.75% is$74.22.
What is the percentage?The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.
As per the given,
Usually, the price of the skateboard = $79.01
The 12% of 79.01 ⇒ (12/100)79.01 = $9.4812
The price after a 12% discount
79.01 - 9.4812 = $69.5288
The 6.75% of 69.5288 ⇒(6.75/100)69.5288 = $4.693194
The total price after applying the 6.75% tax,
$69.5288 + $4.693194 = $74.22
Hence "The total cost of the skateboard after being discounted by 12% and then sales tax of 6.75% is$74.22".
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Please help me with math
The set of numbers from least to greatest is-
5×10⁻², 6%, 2/5, 4/9, 2⁻¹, √3.
What is referred as the ascending order?The arrangement of numbers or even other items in order of increasing from smallest to largest is referred to as ascending order. Ascending order is represented by numbers that emerge on a number line from left to right. We generally represent it with commas or by using the 'less-than symbol (<)' between numbers.For the given numbers;
The given number are-
2/5, 5×10⁻², √3, 6%, 4/9, 2⁻¹.
These number can be written in the decimal form as;
2/5 = 0.405×10⁻² = 0.058√3 = 1.7326% = 0.064/9 = 0.442⁻¹ = 0.5Now arrange the number from least to greatest.
0.058, 0.06, 0.40, 0.44, 0.5, 1.73
Convert the number in given form.
5×10⁻², 6%, 2/5, 4/9, 2⁻¹, √3.
Thus, the number represented in the ascending order are-
5×10⁻², 6%, 2/5, 4/9, 2⁻¹, √3.
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Pancakes are made with 1½ cups water and 1/2
What is the ratio of water to milk?
cup milk.
1 1/2 : 1/2 is the rario of wayer to milk
The ratio of water to milk is 3:1.
What are ratios ?The quantitative relation between two amounts showing the number of times one value contains or is contained within the other is called ratio.
Water = 1½ cups
= 3/2 cups
Milk = 1/2 cup
Ratio of Water to milk
= 3/2 : 1/2
= 3/2 ÷ 1/2
= 3/2 x 2/1
= 3/1
so, the ratio of water to milk is 3:1.
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The distribution of the salaries at a small business is strongly skewed with many people making very modest salaries and a few making very large salaries. Which measure of center, mean or median, is a better indication of a "typical” salary at this business?
The mean is better because it is not affected by the high salaries.
The median is better because it is not affected by the high salaries.
It cannot be determined without knowing the actual salaries.
Either one would be a good measure of a typical salary because they are the same value.
(Plss someone help, this is my last try... ima cry if I fail this sh again)
The measure of center that is a better indication of a "typical” salary at this business is A. The mean is better because it is not affected by the high salaries.
How to illustrate the information?When the majority of the data are gathered on the left of the distribution curve or the histogram, the distribution is said to be positively skewed, or skewed to the right.
If the majority of the data are gathered on the right side of the distribution curve or the histogram, the distribution is said to be negatively skewed, or to the left. It is assumed that many employees at tiny businesses earn extremely low pay while a select few earn very high salaries. In this case, the mean gives between information about the data.
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Which expression is equivalent to (1)/(2^(-2)*3^(-2)) ?
Answer:
B Description is in the picture
Answer:
[tex]2^2*3^2[/tex]
Step-by-step explanation:
By definition of a negative exponent: [tex](\frac{a}{b})^{-x}=(\frac{b}{a})^x=\frac{b^x}{a^x}[/tex]
In the last step I simply distributed the exponent, but this actually goes both ways! So we can do: [tex]\frac{b^x}{a^x}\implies(\frac{b}{a})^x[/tex]
The next thing you need to know is that: [tex](ab)^x=a^x*b^x[/tex]
and like the previous statement, it works both ways! So this means: [tex]a^x*b^x\implies (ab)^x[/tex]
So the denominator of the expression given can be expressed as:
[tex](2^{-2}*3^{-2})\implies (2*3)^{-2}[/tex]
Lastly you need to understand: [tex]1^x[/tex] just simplifies to one, because [tex]1*1*1*1...\text{ x amount of times}[/tex] will stay equal to one. So we can thing of 1 as being raised to some number, even if not explicitly stated.
This helps because we can write one as: [tex]1^{-2}[/tex]
so now we have the expression:
[tex]\frac{1^{-2}}{(3*2)^{-2}}[/tex]
Well this can because now we can "factor" out this exponent just like how it was demonstrated in the beginning
We get the expression: [tex](\frac{1}{3*2})^{-2}[/tex]
Now we use the definition of a negative exponent, to get the reciprocal giving us the expression
[tex](\frac{3*2}{1})^{2}[/tex]
We can now "distribute" this exponent across the division to get
[tex]\frac{(3*2)^2}{1^2}[/tex]
Well 1 squared just simplifies to 1, so it's redundant to write.
This gives us the expression:
[tex](3*2)^2[/tex]
and as stated before we can distribute this across multiplication, and another way to think of it is:
[tex](3*2)^2\implies (3^2*2^2)\\\\\\text{because } (3*2)^2\implies (3*2)*(3*2)\implies(3*3)*(2*2)[/tex]
we're just grouping the like terms, so we can write them as an exponent.
So this gives us our final expression:
[tex]3^2*2^2[/tex]
or
[tex]2^2*3^2[/tex]
which is the option B, since the order in which we multiply does not matter.
The measures of the exterior angles of a quadrilateral are 2x°, 3x°, 9x°, and 10x°. Find the measure of the largest exterior angle.
Convert the angle \theta=310^\circθ=310
∘
theta, equals, 310, degrees to radians.
The degrees to radians conversion is given as 1° = π/180 radian thus the conversion of 310° is (31/18)π.
What is unit conversion?To convert any unit into another is called a unit conversion.
In order to convert units, we need to care about their dimensions their dimension should not be changed.
It is known that π radian = 180°.
1° = (π/180) radian.
Multiply both sides by 310
310° = (π/180)310
310° = (31/18)π
Hence "The degrees to radians conversion is given as 1° = π/180 radian thus the conversion of 310° is (31/18)π".
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Point B' is the image of point B after a reflection in a line. Write the equation of the line.
B(2,-4), B'(6,-4)
Thanks! <3
The slope and intercept of the line are -2 and 0. The equation of the line is y = -2x
Equation of LineTo find the equation of line, we have to find the slope of the equation and its y-intercept.
The slope of a line can be calculated as
[tex]m = \frac{y_2 - y_1}{x_2 - x_1} \\m = \frac{-4 - (-4)}{6 - 2}\\m = \frac{-8}{4} \\m = -2[/tex]
The slope of the line is equal to -2.
Lets find the intercept of the line;
The line of an equation is given as
[tex]y = mx + c[/tex]
We can pick point A and substitute its values to find c
[tex]y = mx + c\\- 4 = -2(2) + c\\-4 = -4 + c\\c = -4 + 4\\c = 0[/tex]
The equation of the line is y = -2x
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Katie bought 4 sweaters that each cost the same amount and 1 skirt that cost 20$ . The items she bought cost a total of 160 before tax was added. What was the cost of each sweater?
A
$20\$ 20$20
Using simple linear equation we calculate the cost of a sweater as $35 .
A linear polynomial over a field, from which the coefficients are taken, can be equalised to zero to produce a linear equation.
The numbers that, when used to replace the unknowns in such an equation, result in the equality, are the solutions.There is just one possible answer when there is only one variable (providing that. The term "linear equation" frequently alludes indirectly to this specific situation, in which the variable is appropriately referred to as the "unknown."Let the cost of each sweater be x.
Cost of the skirt = $20
Let us form a linear equation to calculate the required cost
4x + 20 = 160
solving we get :
x = 35
Therefore the cost of a skirt is $35.
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simplify a5/a2. can someone help fast
Answer:
⇔[tex]a^{3}[/tex]
Step-by-step explanation:
Law of Indices
Division law: [tex]\frac{a^{5} }{a^{2} }[/tex] =[tex]a^{5-2} =a^{3}[/tex]
1.75 x 1.25 estimate
Answer:
2.1875
(in nearest hundredths it would be 2.19(rounded)
the world population was 6.9 billion at the end of 2010 and is predicted to reach 9 billion by the end of 2050.1 (a) assuming the population is growing exponentially, what is the continuous growth rate per year? round your answer to three decimal places.
The continuous growth rate per year of the world population is 0.664%.
What is defined as Exponential Growth?Exponential growth occurs when the growth of a quantity at any point in time has been proportional towards its value at that point. If we have a few numbers, we could use simple exponential growth models to determine the population.We've been told to assume that population is growing at an exponential rate. As a result, we can employ the population model shown below.
N(t) = N₀ e∧(kt)
Here, N(t) represents the population after t years, N₀ represents the initial population, and k represents the continuous growth rate.
We've been told that initial population of 6.9 billion will increase to 9 billion in 40 years (2050-2010).
To use this information, we calculate the growth rate using the model described below.
N(40) = 6.9 e∧(40k)
N(40) = 9 (given)
9 = 6.9 e∧(40k)
Taking ㏑ both side
㏑ 9 = ㏑ 6.9 e∧(40k)
40k = ㏑(9/6.9)
k = 0.00664
k = 0.664%
Thus, the continuous growth rate per year of the world population is 0.664%.
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Deshaun invested in a savings bond for 4 years and was paid simple interest at an annual rate of 2%. The total interest that he earned was $160. How much did he invest?
For a Simple Interest of $160, the amount that he invested is $2000.
Simple interest is a quick and simple formula for figuring out how much interest will be charged on a loan. The daily interest rate, the principle, and the number of days between payments are multiplied to calculate simple interest.
Given:
Simple Interest (S.I.) = $160
Rate of Interest (R) = 2%
Time Period (T) = 4 Years
Let the Principal Amount be $P
We know,
[tex]S.I. =\frac{P*R*T}{100}[/tex]
Putting the given values in the formula, we get:
[tex]S.I. =\frac{P*R*T}{100}\\S.I. =\frac{P*2*4}{100} =\frac{P*8}{100}\\ 160 =\frac{P*8}{100} \\P = \frac{160*100}{8} =\frac{16000}{8} = 2000[/tex]
Hence, He Invested $2000
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Answer:
$2,000
Step-by-step explanation:
Simple Interest Formula
[tex]\large\boxed{\sf I = Prt}[/tex]
where:
I = Total interest accrued.P = Principal.r = Interest rate (in decimal form).t = Time (in years).Given values:
I = $160r = 2% = 0.02t = 4 yearsSubstitute the given values into the formula and solve for P:
[tex]\implies \sf 160=P \cdot 4 \cdot 0.02[/tex]
[tex]\implies \sf 160=0.08P[/tex]
[tex]\implies \sf P=\dfrac{160}{0.08}[/tex]
[tex]\implies \sf P=2000[/tex]
Therefore, the amount Deshaun invested was $2,000.
What must be the units of R, the gas constant, in this formula? A. Newton • meter per kelvin B. mole • kelvin per Newton • meter C. Newton • meter per mole • kelvin D. Newton • meter • kelvin per mole
Solve R:
Multiply both sides of the equation by V:
[tex]\begin{gathered} PV=V\cdot\frac{\text{nRT}}{V} \\ \\ PV=nRT \end{gathered}[/tex]Divide both sides of the equation by nT:
[tex]\begin{gathered} \frac{PV}{nT}=\frac{\text{nRT}}{nT} \\ \\ \frac{PV}{nT}=R \end{gathered}[/tex]Then, R is:
[tex]R=\frac{PV}{nT}[/tex]Use the given units in the equation above:
[tex]R=\frac{N\cdot m^3}{mol\cdot K}[/tex]Then, the units of R are: Newton*cubic meter per mol*Kelving + 3 < 6
please help me
The solution to the given inequality expression is g <3
Linear inequalityInequality are expressions not separated by an equal sign. They are separated by a less than, greater than, less than or equal to and greater than or equal to.
Given the linear equation below:
g + 3 < 6
We are determine the unknown variable "g"
First, we need to subtract 3 from both sides to have;
g + 3 - 3 < 6-3
g < 6 - 3
g < 3
Hence the solution to the given inequality expression is g < 3
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Reasoning 5 Jack calculates 6 x 102 + 3 x 10³ = 9 × 105 Explain Jack's mistake, and write in the correct answer in standard index form.
Answer:
3.6*10³
Step-by-step explanation:
Jack cannot add the powers of 10 because they are in addition. We can apply the exponent rule only when they are in multiplication.
[tex]\sf 6 *10^2 + 3*10^3= 6*100 + 3*1000\\[/tex]
= 600 + 3000
= 3600
[tex]\sf = 3.6 * 10^3[/tex]
All men are mortal. Joe is a man. Therefore Joe is mortal. If the first two statementsare true, then the conclusion must be true.
Answer:
Step-by-step explanation:
Yes
a box is to be constructed from a sheet of cardboard that is 10 cm by 60 cm by cutting out squares of length x by x from each corner and bending up the sides. what is the maximum volume this box could have? (round your answer to two decimal places.)
The maximum volume of the box is 54 cm³ .
To obtain the largest volume feasible, multiply each measurement by the largest possible error. To find the least volume that may be created, multiply after subtracting the biggest possible error from each measurement.
Given :
a box is to be constructed from a sheet of cardboard that is 10 cm by 60 cm
cutting out squares of length x by x from each corner and bending up the sides
⇒ (50-2x)(10-2x)(x)
⇒ 500-100x-20x+4x^2) (x)
⇒ 4x^3-120x^2+500x
⇒ dv/dx 12x^2-240x+500=0
⇒ 3x^2-60x+125=0
⇒ Quadratic formula x=[60 ± √2100]/6
⇒ x= 2.36 or 17.64
volume max: 45.28 x 5.28 x 2.36= 564 cm^3
Hence The maximum volume of the box is 54 cm³
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write an equation for each line
FIRST GETS BRAINLIEST PLS HURRY
I WILL GIVE BRAINLIEST!! HELP PLEASE NOW!!
A conjecture and the flowchart proof used to prove the conjecture are shown.
Drag an expression or phrase to each box to complete the proof.
yes thank you very muchGiven: Measure of angle D E G equals 51 degrees. Measure of angle G E F equals 39 degrees. Prove: Triangle D E F is a right triangle. Art: A right angle triangle D E F. Angle D E F is a right angle. Point G is on segment D F, and segment E G is drawn.
Georgia is given a rectangular piece of paper. If the
length of Georgia's piece of paper is represented by
x - 5 and the width is represented by 7x - 3, then
what is the area of the paper represented by?
Answer:
i will answer in 2050 my bad
i just need the points rq
Step-by-step explanation:
n/a
Write an equation in slope-intercept form of the line that passes through $\left(1,-9\right)$ and $\left(-3,-9\right)$ . An equation is
The equation of line is y = -9.
What is a equation of line?These lines are written in the form y = mx + b, where m is the slope and b is the y-intercept. We know from the question that our slope is 3 and our y-intercept is –5, so plugging these values in we get the equation of our line to be y = 3x – 5.
Given that,
(1, -9) = ( [tex]x_{1}, y_{1}[/tex])
(-3, -9) = [tex](x_{2},y_{2})[/tex]
Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
= [tex]\frac{-9+9}{-3-1}[/tex]
Slope = 0
Then the equation of line
[tex]y-y_{1} = m(x-x_{1})[/tex]
y+9 = 0
y = -9
Hence, The equation of line is y = -9.
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Evaluate. Write your answer as a whole number or as a simplified fraction.
Submit
Answer: 1/121
Step-by-step explanation:
Any number raised to the power of 0 is 1
11^2 = 121
customers send emails to a help desk of an online retailer every 2 minutes, on average, and the standard deviation of the inter-arrival time is also 2 minutes. the online retailer has three employees answering emails. it takes 4 minutes to write a response email, on average. the standard deviation of the service times is 2 minutes. this is a g/g/k queue. what is the arrival rate? what is the service rate?
The arrival rate is found to be 30 emails per hour and the service rate is calculated to be 45 emails per hour.
It has been mentioned in the question that in every 2 minutes, customers send emails to a help desk of an online retailer, on an average, and the standard deviation of the inter-arrival time is also given to be 2 minutes. The online retailer has three employees for answering those emails.
It takes almost 4 minutes to write a response email to the customer, on average. The standard deviation (SD) of the service times is 2 minutes. This is a g/g/k type queue.
Therefore the arrival rate per hour is given by the following relation:
Arrival rate in 1 hr = No. of minutes in an hr / inter arrival time of email taken in minutes
Given here,
No. of minutes in an hour = 60 minutes
Inter arrival time of the email taken in minutes = 2 minutes
∴ Arrival rate in 1 hr = 60 / 2
= 30 emails / hr
Hence the arrival rate is 30 emails per hour.
Now for finding out the service rate we have the following formula:
Service rate = No. of minutes in an hr x No. of employes answering/ average time that is required to write response email
Given here,
No. of minutes in an hr = 60 minutes
No. of employes answering = 3
Average time that for writing response email = 2 minutes
∴ Service rate = 60 * 3 / 4
= 45 emails / hr
Hence the service rate is 45 emails per hour.
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Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or negative correlation, describe its meaning in the situation. Average Cycling Speed A graph titled Average Cycling Speed has minutes on the x-axis and miles per hour on the y-axis. Points are at (5, 15), (10, 13), (15, 11), (20, 10), (25, 9). a. no correlation b. negative; as time passes, speed decreases c. positive; as time passes, speed increases d. positive; as time passes, speed decreases Please select the best answer from the choices provided A B C D Mark this and return
Step-by-step explanation:
5,15 can accord to be an sciencetistic teachers, the 15,11 which means you can appear to combine them together and be an 100 then you do the abcd and boom