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Answer:
k=7
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Related Questions
can sb pls answer this for me im having a really hard time
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Increase 400 by 20% please
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about ____ of the possible outcomes occur within one standard deviation of the mean\
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Answer:
68%
Step-by-step explanation:
In normal distribution, the empirical rule (aka 68-95-99.7 rule) describes the approximate proportion of data that falls within certain distances from the mean of a normal distribution. Specifically, the rule states that:
About 68% of the data falls within one standard deviation of the mean.About 95% of the data falls within two standard deviations of the mean.About 99.7% of the data falls within three standard deviations of the mean.1. The city commission wants to construct a new street that connects Main Street and North Boulevard asshown in the diagram below. The construction cost has been estimated at $110 per linear foot. Find theestimated cost for constructing the street. (1 mile = 5280 ft) one legs is 9 mi and the base is 6 mi but the hypotenuse is ?.
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EXPLANATION
Since we have that the cost per linear foot is $110, and by applying the Pytagorean Theorem, we can get the value of the new street as shown as follows:
\(\text{Hypotenuse}^2=\text{shorter leg\textasciicircum{}2 + larger leg \textasciicircum{}2}\)Where shorter leg = 6 , larger leg = 9 and Hypotenuse = New Street
Substituting terms:
\(New_{\text{ }}street^2_{\text{ }}=6^2+9^2\)Applying the square root to both sides:
\(\text{New street}=\sqrt[]{117}\)Simplifying:
\(\text{New stre}et=3\sqrt[]{13}=10.82\text{ miles}\)Representing the length in ft units:
\(\text{New str}eet\text{ = 10.82 }\cdot\text{ }5280\text{ = }57129.6\text{ ft}\)Finally, the cost per linear foot will be:
\(\text{New stre}et=57129,6\text{ ft }\cdot\text{ }110\text{ =6,284,256}\)The cost of the street will be of $6,284,256
Calculate r(-3) Please
Answers
Answer: \:y=-3\frac{1}{2}x
Step-by-step explanation:
pls tell me if its wrong so i can fix it
slope is 2/3 y- intercept is -2
Answers
Answer:
y = (2/3)x - 2
Step-by-step explanation:
The equation of this line is y = (2/3)x - 2, where m is the given slope and -2 is the given y-intercept. We need only plug in the given values for m and b.
Answer:
\(y = \frac{2}{3} x -2\)
Step-by-step explanation:
This is the slope-intercept form. The slope-intercept form is written as y = mx + b where m is the slope and b is the y-intercept. The y and x stay as they are.
I hope this was what you were looking for.
A 2-pound bag of carrots costs $7.68. What is the price per ounce?
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The price of carrots per ounce is $0.24 .
Ounce is an unit of mass in the Imperial System. It is widely used throughout the world and is one of the oldest units of measurement to still exist. The unit ounce is derived from uncia, a unit of measurement in roman times.
The ounce(abbreviated oz) is equal to approximately 28.35 grams and 16 ounces make up a pound.
Now it is given that a 2-pound bag of carrots cost $7.68 .
Therefore price per pound of carrots=$7.68÷2
Price per pound=$ 3.84 .
Now we know that 16 ounces make up a pound.
Price of carrots per ounce= $3.84 ÷16
Price per ounce= $ 0.24
Therefore the price of carrots per ounce is $0.24
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Independence and Exclusiveness are two topics which are important to probability and often confused. Discuss the difference between two events being independent and two events being mutually exclusive. Use examples to demonstrate the difference. Remember to explain as if you are talking to someone who knows nothing about the topic.
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Answer:
Independence and Exclusiveness are two topics which are important to probability and often confused. Discuss the difference between two events being independent and two events being mutually exclusive. Use examples to demonstrate the difference. Remember to explain as if you are talking to someone who knows nothing about the topic.
[my response: talk to them in formal language about the topic.]
Step-by-step explanation:
Please help will award brainliest to whoever helps and give you 30 points
Part of the roof of a factory is devoted to mechanical support and part to green space. The area G that is designated as green space can be modeled by the polynomial 2x^2 - 7x and the area M that is devoted to mechanical support can be modeled by the polynomial x^2 - 9x + 24. Given that the area R of the roof is 36 square yards, write and solve a quadratic equation to find the total area of the green space. **Use the positive value for your solution.
(Hint: R = G + M)
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i think i is 56 do you have answer choices?
Which expression is equivalent to (3x^2-7)
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Answer:
x^2-2x+1
Hope this Helps! <3
At a workplace 153 of the 225 employees attended a meeting which statement shows values that are all equivalent to the fraction of employees who attended the meeting
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ANSWER
A 153/225 = 17/25 =0.68=68%
B 225/153 = 25/17 =1.47=147%
C 153/225 = 51/75 =0.51=51%
D 225/153 = 75/51 =0.75=75%
Please help. Pls. I will give you brainliest. You dont have to write 200 words Just choose a topic and write some sentences- I will do the rest ~~~Ty
Answers
Answer:
I had to screenshot from my computer because it said (you have an inappropriate word or link in your answer)
we do things called culture monday at our school where we write about a problem and then do a discussion on it in the classroom
this was mine so nooooo plagiarism or anything.
please mark brainliest......
Answer:
World War II started on September 1st, 1939, a decade after America’s stock market crash and downfall of the economy, which was in 1929, when Germany, led by a man born in Austria called Adolf Hitler, invaded Poland. France and England immediately declared war on Germany and Germany’s allies.
Germany had two allies, Japan and Italy, Italy mostly provided food and supplies, while Japan provided manpower, along with Germany. Germany, Japan, and Italy were called the Axis powers, and England, Russia (Then called the Soviet Union), and America (When America joined the war), along with many other countries, such as China and France (Except for the four years which Germany occupied France, 1940--1944), were called the Allied powers.
Germany invaded and occupied Austria, Belgium, France, Norway, Luxembourg, Greece, Czechoslovakia, Greece, Denmark, Holland, Hungary, the Netherlands, and many other countries with the help of Italy and Japan.
The United States wanted to be neutral through World War II like the Irish and Swiss, but the Axis Powers did not let this happen. Instead, Japan bombed Pearl Harbor and utterly destroyed and sunk many ships, so the United States had no choice but to join the war and the Allied forces.
The United States both lost and won many battles, and Germany was losing battles against the Soviet Union and England. Germany lost many battles in the Soviet Union, which was fought in harsh and bitter cold, and also lost the Battle of Britain fought in the skies over England between Britain’s Royal Air Force (RAF) and Germany’s Luftwaffe.
Many people died as a result of the Battle of Britain by bombs and flying shrapnel. In order to try to get their country back to normal, Great Britain started to ration food, drafted men over eighteen to go to the war front, made shelters all over England, in cities, towns, even in the country, in case of an air raid. The Battle of Britain was mostly fought in the skies of London, but enemy planes heading towards London to fight might drop a bomb to wipe away towns, cities, or a part of country off the map.
Germany soon retreated from Great Britain and thought that England would surrender with the rest when Germany conquered and ruled the world, which was Germany’s goal, but England, after some recovery, fought Germany as hard as ever, angered by the people and planes lost because of the Battle of Britain.
In the middle of this, President Franklin Delano Roosevelt died because of a mixture of bad health, too much stress, and his polio. Americans grieved for President Roosevelt, and elected a new president, President Harry Truman.
With forces fighting with both the Soviet Union and England, and later fighting on D-Day, Germany could not last for long, even with its two allies. But the number of allies Germany had soon reduced to one, for Italy joined the Allied powers, betraying the Axis Powers. Germany desperately tried to fight back the forces of the Allied powers, but soon surrendered days after Adolf Hitler’s death, on May 8th, 1945.
Even when its ally Germany had surrendered and Italy had gone over to the Allies, Japan still fought, even though there was very little chance they would win. This was a bad idea, an idea which would change history. The Allied powers turned their full attention on defeating Japan, which was a bad thing, since Japan could only take over a few islands in the Pacific belonging to the United States and could not defeat any others in the beginning when the Allied powers’ attention was divided. As a result, many, at least hundreds, died, deaths that were not even necessary. The United States dropped two atomic bombs from one of America’s bomber planes on Japan’s two major cities, Hiroshima and Nagasaki days apart, so Japan surrendered, unable to lose any more people then it had already.
The two atomic bombs were built in the midst of fighting and stress of World War II in Manhattan, New York by a group of people who specialized in physics, math, and chemistry. The atomic bomb’s code name was: The Manhattan Project. The Manhattan Project, when done and ready, after dropped from an American bomber plane, killed over a hundred thousand Japanese in the two major cities Hiroshima and Nagasaki, most of them regular Japanese civilians going about their daily life.
World War II was a very important war and time period that changed the world. It changed the human race. The atomic bomb, invented in World War II, soon led other countries, such as England, France, the Soviet Union (Later known as Russia), and China to build it too, which gave these countries a huge advantage in war. America’s stock market bounced back. President Harry Truman became popular for ending World War II.
Step-by-step explanation:
Sorry I'm late
803 words
Brainliest, Please!
AD=
DC=
Angle a=
Angle b=
Angle c=
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9514 1404 393
Answer:
AD= 8
DC= 15
Angle a= 112°
Angle b= 68°
Angle c= 112°
Step-by-step explanation:
We have to assume the figure is a parallelogram.
Opposite sides of a parallelogram are congruent, so ...
BC = AD = 8
AB = DC = 15
Opposite angles are congruent, and adjacent angles are supplementary.
180° - ∠D = Angle a = Angle c = 112°
∠D = Angle b = 68°
Due May 4Attendance Question (5/4/21) A cab company charges a$5 boarding rate in addition to its meter which is $3 forevery mile. What equation represents the rate of thiscompany?
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Explanation
Step 1
Let x represents the number of hours
Let y represents the rate of the company
and
cost per hour = $3
so, the total cost per time is
cost per time= 3* number of hours
cost per time==3x
now, the company charges a $5 boarding rate
so, the rate is
\(\begin{gathered} \text{rate= boarding rate}+\text{cosper times} \\ reaplce \\ y=\text{ \$5+\$3x} \\ \text{reorder} \\ y=\text{ \$3x}+\text{\$5} \end{gathered}\)I hope this helps you
Find the approximate volume of the cone.
o 1,017.4 cm
226.08 cm
o 324 cm
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Answer:
~ 1017.4
Step-by-step explanation:
volume of a cone 1/3 pi r^2 h
1/3 pi * 9^2 * 12 = 1017.8
help with this please
answer needed urgently
Answers
Answer:
5
Step-by-step explanation:
If 30 equals 4 and 60 equals 7, then 40 will equal 5 and 50 will equal 6.
That's driver pays all tall is using only nickels and dimes by throwing one coin at a time into the mechanical toll collector
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Since nickel is 5 cents and a dime is 10 cents, the possible tolls that you can pay need to be multiplies of 5 cents.
Let on represent the number of a ways
for the number of different ways the bus
The driver can pay a toll of 5n rent first case.
The first case used in a nickel then there are ways to pay =
57 - 5 = 5 ( 1 - 1 ) cents
The second case: - The coin used is a dime, then
there is a long way to
pay 5n - 10 2 5 ( 1 - 2 ) cents -
Adding the numbers of sequence of all
In three cases, we then obtain
an = an - 1 an +2
Initially, when n 20 there is exactly I way to pay cents ( using no coins )
when an = 1 there is exactly I to way
to pay 5 cents ( using one tickle )
q =f .
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c) ( A finite population consists of the numbers 2, 4 and 6. Form a sampling distribution (8) of sample mean, when random samples of size 4 is drawn with replacement. Also verify its properties. .6. (a) (6) Under what condition is the sampling distribution of an F-distribution? Explain the relationship between the F and t distributions, between the F and Chi-Square distributions.
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A sampling distribution of sample mean can be formed for a finite population consisting of numbers 2, 4, and 6 by drawing random samples of size 4 with replacement. The properties of this sampling distribution can be verified by calculating its mean, variance, and standard deviation.
The sampling distribution of an F-distribution is valid under the condition that the populations being compared have normal distributions and equal variances. The F-distribution is the ratio of two Chi-Square distributions, and it is used to test the hypothesis that two population variances are equal. The t-distribution is used for testing the hypothesis that a population mean is equal to a given value when the population standard deviation is unknown. The F-distribution and the Chi-Square distributions are related in that they are both used in hypothesis testing involving variances.
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I need to find both x’s
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Answer:
\(x=6\)
\(x=-6\)
Step-by-step explanation:
\(f(x)=x^2-36\)
\(x^2-36=0\)
\(x=36\)
x= ±√36
x= ±6
----------------------
hope it helps...
have a great day!!
Answer:
x=6
x=-6
Step-by-step explanation:
hope it helps..
simplify
(8p^6)^1/3
simplifyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
Answers
Answer:
\(2p^2\)
Step-by-step explanation:
Step 1: Apply the exponentiation property:
\((8p^6)^\frac{1}{3} = 8^\frac{1}{3} * (p^6)^\frac{1}{3}\)
Step 2: Simplify the cube root of 8:
The cube root of 8 is 2:
\(8^\frac{1}{3} =2\)
Step 3: Simplify the cube root of \((p^6)\):
The cube root of \((p^6)\) is \(p^\frac{6}{3} =p^2\)
Step 4: Combine the simplified terms:
\(2 * p^2\)
So, the simplified expression is \(2p^2\).
Use the box method to distribute and simplify (3x+x^{2})(1+6x).(3x+x
2
)(1+6x). Drag and drop the terms to the correct locations of the table.
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By using the box method, the terms of the equation should be distributed and simplified as follows;
3x x²
1 3x x²
6x 18x² 6x³
What is the distributive property of multiplication?In Mathematics, the distributive property of multiplication states that when the sum of two or more addends are multiplied by a particular numerical value, the same result and output would be obtained as when each addend is multiplied respectively by the same numerical value, and the products are added together.
Next, we would multiply both sides of the equation together in order to open the bracket as follows;
(3x + x²)(1 + 6x)
3x(1) + 3x(6x) + x²(1) + x²(6x)
3x + 18x² + x² + 6x³
By combining like terms and rearranging the equations, we have:
6x³ + 19x² + 3x.
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Suppose a certain company sells regular keyboards for $83 and wireless keyboards for $115. Last week the store sold three times as many regular keyboards as wireless. If total keyboard sales were $5,824, how many of each types were sold?
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Answer:
48 regular keyboards, 16 wireless keyboards
Step-by-step explanation:
To find the number of each type of keyboard sold, we need to form and solve 2 equations.
Define variables used:
Let the number of regular keyboards and wireless keyboards sold be r and w respectively.
Equation from total sales:
Sales from regular keyboards= $83r
Sales from wireless keyboards= $115w
Total sales= $(83r +115w)
83r +115w= 5824 -----(1)
Equation from number of keyboards sold:
r= 3w -----(2)
Let's solve the simultaneous equations by substitution!
Subst. (2) into (1):
83(3w) +115w= 5824
249w +115w= 5824
364w= 5824
Divide both sides by 364:
w= 16
Subst. into (2):
r= 3(16)
r= 48
Thus, 48 regular and 16 wireless keyboards are sold.
Supplementary:
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2/5 to the students in my class can speak Spanish and 1/5 can speak Korean how many of the 30 students can speak a second language
Answers
Answer:
18 students
Step-by-step explanation:
2/5+1/5= 3/5
1/5= 30/5
= 6
3/5= 6*3
= 18
A triangle with the coordinates A (-5, 2), B (1, 3), and C (-5, -8) is dilated with a scale
factor of 5 with the origin as the center of dilation. What are the coordinates of B'?
Answers
In this case, the scale factor is 5, so the coordinates of the vertices of the dilated triangle will be (5x, 5y) for the original coordinates (x, y).
Therefore, the coordinates of B' will be (51, 53) = (5, 15). So the coordinates of B' are (5, 15).
How many solutions does the system have? {y=−2x 2y=x2−3x Enter your answer in the box.
Answers
By solving given equation and then finding discriminant we get that this system of equations have 2 solutions
What is system of equations?Collection of two or more equations with a same set of unknowns is called system of equations.
Given equation
\($$y=-2 x+2\ \ ...(1)\\\\y=x^{2}-3 x$$\ \ \ ...(2)\)
From equation (1) and (2)
\(x^{2}-3 x=-2 x+2\\\\x^{2}-3 x+2 x-2=0\\\\x^{2}-x-2=0\)
This is a quadratic equation
So discriminant
\(D=b^2-4ac\)
\(D=(-1)^2-4(1)(-2)\\D=1+8\\D=9\)
As D is >0 so we will get two values of x
and two values of y corresponding to values of x
By solving given equation and then finding discriminant we get that this system of equations have 2 solutions
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The number of items on two grocery lists differs by 7. The total number of 1
items is 33. How many items are on each list? Use n as your variable.
Answers
Answer:
n=26
n=33
Step-by-step explanation:
What is (3d^2)^0 equal too?
Please and thank you
Answers
Answer: 1
Step-by-step explanation:
Given:
(3d^2)^0
Rewrite:
\(\displaystyle (3d\,^2)^0\)
Simplify:
-> Anything to the power of 0 is equal to one
1
Answer:
1
Step-by-step explanation:
Given:
(3d^2)^0
Rewrite:
Simplify:
-> Anything to the power of 0 is equal to on
John can skate 1,000 meters in 200 seconds. How many meters per second can he skate?
Answers
Answer:
John can share 5 meters per second
Question:
Chana and Josiah started skating at the same time in the same direction, but Josiah had a head start 10 meters past the starting line. Chana skated 3 meters per second and Josiah skated 2 meters per second.
Answer:
What does point G represent in this context?
Chanas distance from the starting line at a time when she is farther than Josiah.
Triangle A'B'C' is formed by a reflection over x = -1 and dilation by a scale factor of 4 from the origin. Which equation shows the correct relationship between AABO
and AA"B"C"?
S
A"B" = 4BC
BC=4A"B"
AB 1
A"B"
=
00
Answers
\(\frac{AB}{A"B"} = \frac{1}{4}\) equation clearly illustrates how AABO and AA"B"C relate to one another.
What is equation ?An equation is, for instance, 3x - 5 = 16. We can solve this equation and determine that the value of the variable x is 7.
The three main types of linear equations are the slope-intercept form, standard form, and point-slope form.
Considering the data:
Dilation by a scale factor of 4 from the origin in the form of an A'B'C' reflection over x = 1
<=> The two triangles are comparable to one another since triangles can have the same shape but differ in size, so A′′B′′C′′ is 4 times larger than ABC.
=> the connection between "ABC" and "A"B"C" .
\(\frac{AB}{A"B"} = \frac{1}{4}\)
We settle on C.
\(\frac{AB}{A"B"} = \frac{1}{4}\) equation clearly illustrates how AABO and AA"B"C relate to one another.
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true or false, the ratios 4:10 and 8:20 are equivalent
PLEASE HELP IF I FAIL MY MOM IS GONNA-
Answers
Answer:
True
Step-by-step explanation:
If you multiply both 4 and 10 by two, you get 8 and 20
The ratios 4:10 and 8:20 are Equivalent.
What is ratio?A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.
Given:
As, when the two ratios are equal after simplifying then they are equivalent ratio.
So, 4/10
= 2/5
and, 8/20
= 2/5
As, both ratios are giving equal value after simplifying.
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