Answer:
Test statistic
Z = 2.820 > 1.96 at 0.05 level of significance
Null hypothesis is rejected at 0.05 level of significance
The average salary is actually higher than the reported the average of American Medical Association
Step-by-step explanation:
Step(i):-
Given data
sample size 'n' = 64
mean of the Population( μ) = $189,121
Standard deviation of the Population(σ) = $26,975
Mean of the sample (x⁻) = $198,630
Step(ii):-
Null hypothesis : H₀ : there is no significance difference between the means
Alternative Hypothesis :H₁ : The average salary is actually higher than the reported the average of American Medical Association
Test statistic
\(Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }\)
\(Z = \frac{198630 -189121}{\frac{26,975}{\sqrt{64} } }\)
Z = 2.820
Level of significance
∝ =0.05
\(Z_{\alpha } = Z_{0.05} =1.96\)
Final answer:-
Z = 2.820 > 1.96 at 0.05 level of significance
Null hypothesis is rejected at 0.05 level of significance
The average salary is actually higher than the reported the average of American Medical Association
A circular lawn has a row of bricks around the edge. The diameter of the lawn is
about 40 feet.
Question 1
3 pts
Which is the best estimate for the amount of grass in the lawn?
125 feet
125 square feet
1,250 feet
1250 square feet
Answer:
Step-by-step explanation:
Answer:
Area of the grass in the circular lawn is 1250 square feet
Step-by-step explanation:
Lawn is in the shape of circle having radius = 20 feet
Area of the circular lawn will be represented by the formula,
Area = πr² [ Here 'r' = Radius of the circular lawn]
= (3.14)(20)²
= 3.14 × 400
= 1250 square feet
Therefore, area of the grass in the circular lawn will be 1250 square feet
Answer:
1250 square feet
Step-by-step explanation:
A = pie × radius^2
what is the value of x in the following? 40x + 7=2x × 12 - 16
Answer:
x = -1.4375
Step-by-step explanation:
Multiply the monomials: 40x + 7 = 24x - 16
Rearrange unknown terms to the left side of the equation: 40x-24x=-16-7
Combine like terms: 16x=-16-7
Calculate the sum or difference: 16x = -23
Divide both sides of the equation by the coefficient of variable: x = -23÷16
Calculate the product or quotient: x=-1.4375
A train traveled 250 mi in 2 hours. If it traveled at the same rate of speed how long would it take the train to travel 600 mi
4.8
Divide 250 by 2 which is 125 then do 600 divided by 125. Then your answer should be 4.8.
In which
situation can the Expression
on 8×2 be used to find the total number of head wraps on the shelf
The expression 8×2 can be used to find the total number of head wraps on the shelf when there are 8 head wraps per shelf and 2 shelves in total, resulting in a total of 16 head wraps.
What is expression?Expression in mathematics is a combination of symbols and numbers, often using an operation, such as addition, subtraction, multiplication, or division. It can represent a number, a variable, a function, or a mathematical statement. It can also represent a combination of these things. Expressions are used to describe relationships between numbers, variables, and mathematical concepts.
The expression 8×2 can be used to find the total number of head wraps on the shelf when there are 8 head wraps per shelf and there are 2 shelves in total. This expression can be used to calculate the total number of head wraps on the shelves by multiplying 8 (the number of head wraps per shelf) by 2 (the number of shelves). As such, the expression 8×2 can be used to find the total number of head wraps on the shelf when there are 8 head wraps per shelf and 2 shelves in total, resulting in a total of 16 head wraps.
In conclusion, the expression 8x2 can be used to calculate the total number of head wraps on the shelf when there are 8 head wraps per shelf and 2 shelves in total. By multiplying 8 (the number of head wraps per shelf) by 2 (the number of shelves), the total number of head wraps on the shelf can be found, resulting in a total of 16 head wraps.
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Complete questions as follows-
In which situation can the Expression
on 8×2 be used to find the total number of head wraps on the shelf?
Based on the scatterplot, what is a reasonable expected average selling price of skateboard in 2016?
Answer:
Last option, $58.50
Step-by-step explanation:
Let's look at the graph, and let's do a simple analysis of the information that it shows.
We can see that in 2009, the price was between $30 and $40.
We can see that as the years pass by, the price increases, such that in the year 2013 the selling price spikes and ranges between a bit less than $50 to a little more than $50.
Then we can only expect that a few years later (in 2016) the price to be larger than $50.
The only option that has a price larger than $50 is the last one, $58.50, then that one is the only option that can be the correct one.
We also could do an exact calculation of this if we had the raw data, but as you can see in the graph, we can not know the exact price of each graphed point (we can only estimate it) so we will not get a nice interpolation by only using the given graph.
When given a set of cards laying face down that spell W, E, L, O, V, E, M, A, T, H, determine the probability of randomly drawing a vowel.
two fifths
two sixths
two tenths
four elevenths
Answer:
so the answer without simplifying is 4/9 but divided by two is 2/4.5 round up and thus the answer is 2/5
Step-by-step explanation:
count the letters
see how many Vowels are there
place in a fraction
simplify
pls answer will give brainliest answer
Answer:
∠A= ∠E, ∠H = ∠D
and the last one
Step-by-step explanation:
opposite angles are equal, alternative interior angle are equal.
Answer:
∠A = ∠E and ∠H = ∠D.
∠E = ∠H and ∠F = ∠G
Step-by-step explanation:
Angles A and E are one set of corresponding angles and angles H and D are another set. Corresponding angles are always congruent to each other and thus equal. Therefore, ∠A = ∠E and ∠H = ∠D.
Angles E and H are one set of vertical angles and angles F and G are another set. Vertical angles are also always congruent to each other and thus equal. Therefore ∠E = ∠H and ∠F = ∠G
help please I begging can you please help me and break it down
Answer:
\(c=\sqrt{32}\)
Step-by-step explanation:
When we solve for this we should always remember this formula \(a^2+b^2=c^2\) and since we already know a and b we can plug that in to find out what c could be but we won't actually solve it.
\(a^2+b^2=c^2\\4^2+4^2=c^2\\16+16=c^2\\32=c^2\\\sqrt{c^2}=\sqrt{32}\\c=\sqrt{32}\)
So c would equal whatever the square root of 32 is.
What is 1/2 divided by 1/4 in the simplest form?
Answer:
2
Step-by-step explanation:
1/2 divided by 1/4 rewritten is 1/2 times 4/1 equels 4/2. In its simplest form 2.
1/2 divided by 1/4 in the simplest form is 2.
What is division?The division in mathematics is one kind of operation. In this process, we split the expressions or numbers into same number of parts.
Given that the expression 1/2 divided by 1/4.
simplifying,
1/2 divided by 1/4 = 1/2 ÷ 1/4
Rearranging into the multiplication form,
1/2 divided by 1/4 = 4/2
1/2 divided by 1/4 = 2
Therefore, the simplest form of 1/2 divided by 1/4 is 2.
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Türevin tanımı ile çözümü
Answer:
15/2
Step-by-step explanation:
5x – 6 < 9 :P porfavore
Answer:
\(x<3\)
Step-by-step explanation:
Treat this the same way you would an equation. Isolate the variable. Add 6 to both sides:
\(5x-6+6<9+6\\\\5x<15\)
Divide both sides by 5:
\(\frac{5x}{5}<\frac{15}{5}\\\\ x<3\)
The value of x is less than 3.
:Done
Answer:
x < 3
Step-by-step explanation:
5x – 6 < 9
Add 6 to each side
5x – 6+6 < 9+6
5x < 15
Divide by 5
5x/5 < 15/5
x < 3
50 Points! Multiple choice geometry question. Photo attached. Thank you!
The two spheres are similar.
Given,
Radius of sphere 1 = 9 ft
Radius of sphere 2 = 6 ft
So,
In case of sphere there is there is only one measurement to compare and they will be similar to each other at the least and if the condition of congruency arises their scale factor will be 1 .
Then,
The two spheres are similar since they have a proportion of their radius. This proportion is 9/6 (3/2) or 6/9 (2/3).
They are not congruent. They do not have the same radius.
Therefore, the spheres are similar.
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HELP OR NO PRESENTS FOR YOU
Answer:
g= (9,8) f= (-5,1)
Step-by-step explanation:
you're welcome =)
Two bottles of water have a mass of 4 kilograms. How many grams is 4 kilograms?
Answer:
4000 grams
Step-by-step explanation:
1 kilogram = 1000 grams therefore 4 kilograms = 4000 grams
What is the meaning of "A group G whose order is a prime number has only two subgroups, G itself and 1 = {1}"?
If G is not a cyclic group, then it does not have a subgroup of order p. Conversely, if G is cyclic, then it has a unique subgroup of order p.
The statement "A group G whose order is a prime number has only two subgroups, G itself and 1 = {1}" means that if G is a group with a prime number of elements, then the only subgroups of G are the trivial subgroup {1} and the group G itself.
In other words, there are no other proper subgroups of G besides these two.
The statement "A group G whose order is (p-1) where p is a prime number has a subgroup of order p if and only if G is cyclic" means that if G is a group with (p-1) elements, where p is a prime number, then G has a subgroup of order p if and only if G is a cyclic group.
In other words, if G is not a cyclic group, then it does not have a subgroup of order p. Conversely, if G is cyclic, then it has a unique subgroup of order p.
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If3r + 5y = 13 and 6r + 7 y = 20, find the value of
Answer:
Step-by-step explanation:
Which is the best buy?
12 tins of fish at K7.80 or 6 tins of fish at K4.20?
Divide price by quantity of each and compare:
7.80 / 12 = o.65 per tin
4.20 / 6 = 0.70 per tin
12 for 7.80 is less per tin, so is the Best Buy.
Find the value of 2a - 1/√a + 1/a where a = 4+2√3
Answer:
\( \frac{19 + 6 \sqrt{3} }{2} \)
Step-by-step explanation:
\(2a - \frac{1}{ \sqrt{a} } + \frac{1}{a} \: \: \: when \: \: a = 4 + 2 \sqrt{3} \)
\(2 \times (4 + 2 \sqrt{3} ) - \frac{1}{ \sqrt{4 + 2 \sqrt{3} } } + \frac{1}{4 + 2 \sqrt{3} } \)
Expand the brackets (multiply every term inside the bracket by the term on the outside) and make the denominator the same (4 + 2√3):
\( \frac{(8 + 4\sqrt{3} )\times(4 + 2 \sqrt{3} ) }{4 + 2 \sqrt{3} } - \frac{ \sqrt{4 + 2 \sqrt{3} } }{4 + 2 \sqrt{3} } + \frac{1}{4 + 2 \sqrt{3} } \)
\( \frac{32 + 16 \sqrt{3} + 16 \sqrt{3} + 24 - \sqrt{4 + 2 \sqrt{3} } + 1}{4 + 2 \sqrt{3} } \)
Collect like-terms:
\( \frac{57+ 32 \sqrt{3} - \sqrt{4 + 2 \sqrt{3} } }{4 + 2 \sqrt{3} } \)
\( \frac{57 + 32 \sqrt{3} - \sqrt{( {1 + \sqrt{3}) }^{2} } }{4 + 2 \sqrt{3} } \)
\( \frac{57 + 32 \sqrt{3} - (1 + \sqrt{3} )}{4 + 2 \sqrt{3} } \)
Eliminate the parentheses:
\( \frac{57 + 32 \sqrt{3} - 1 - \sqrt{3} }{4 + 2 \sqrt{3} } \)
Collect like terms:
\( \frac{56 + 31 \sqrt{3} }{4 + 2 \sqrt{3} } \)
\( \frac{56 + 31 \sqrt{3} }{4 + 2 \sqrt{3} } \times \frac{4 - 2 \sqrt{3} }{4 - 2 \sqrt{3} } = \frac{224 - 112 \sqrt{3} + 124 \sqrt{3} - 186}{16 - 4 \times 3} = \frac{38 + 12 \sqrt{3} }{4} \)
\( \frac{2(19 + 6 \sqrt{3}) }{4} = \frac{19 + 6 \sqrt{3} }{2} \)
What is the value of x?
Enter your answer in the box
___units
The triangle ΔRCD is similar to the triangle ΔRAP. Then the value of the variable 'x' is 28 units.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180 °.
The ratio of the matching sides will remain constant if two triangles are comparable to one another.
The triangle ΔRCD is similar to the triangle ΔRAP. Then the equation is given as,
RC / CA = RD / DP
x / 10 = 42 / 15
x / 2 = 14
x = 2 (14)
x = 28
The triangle ΔRCD is similar to the triangle ΔRAP. Then the value of the variable 'x' is 28 units.
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Answer:
x = 28 units
Step-by-step explanation:
As AP is parallel to CD (indicated by the arrows on the line segment), triangle APR is similar to triangle CDR.
In similar triangles, corresponding sides are always in the same ratio.
\(\implies \sf AP:CD=PR:DR=AR:CR\)
Given
PR = 15 + 42 = 57DR = 42AR = 10 + xCR = xTherefore:
\(\implies \sf PR:DR=AR:CR\)
\(\implies \sf 57:42=10+x:x\)
\(\implies \sf \dfrac{57}{42}=\dfrac{10+x}{x}\)
\(\implies \sf 57x=42(10+x)\)
\(\implies \sf 57x=420+42x\)
\(\implies \sf 15x=420\)
\(\implies \sf x=28\)
Kailey correctly graphed the opposite of –3.3 on the number line.
A number line going from negative 5 to positive 5. Point A is between negative 4 and negative 3, point B is between negative 3 and negative 2, point C is at 3.3, and point D is at 3.9.
Answer:
C
Step-by-step explanation:
I hope this helps!
Answer:
c
Step-by-step explanation:
y+1-x when x=4 and y=5
Answer:
2
Step-by-step explanation:
Y = 5
x = 4
Substitute
5 + 1 - 4
6 - 4
2
Answer:
Given that x = 4 and y = 5,
\(\sf 5 + 1 - 4\\(5 + 1) - 4\\5 + 1\\= 6\\= 6 - 4\\= 2\)
Therefore, the answer is 2.
Find an autonomous differential equation with all of the following properties:
equilibrium solutions at y=0 and y=3,
y' > 0 for 0
y' < 0 for -inf < y < 0 and 3 < y < inf
dy/dx = ______
dy/dx = (y-3)(y+3) is the autonomous differential equation that satisfies all of the given properties.
The autonomous differential equation that satisfies all of the given properties is dy/dx = (y-3)(y+3). This equation has two equilibrium solutions at y = 0 and y = 3, and is positive for -inf < y < 0, and negative for 0 < y < 3, and positive for 3 < y < inf.
To demonstrate this, let's consider the equation at y=-3. Since y=-3 is less than 0, the equation can be simplified to dy/dx = 6. Since 6 is positive, y' is also positive, meaning that y is increasing. Similarly, if y=3, dy/dx = 0 which is neither positive nor negative, so y remains constant. Finally, for y>3, dy/dx = -6, which is negative, so y is decreasing.
Therefore, dy/dx = (y-3)(y+3) is the autonomous differential equation that satisfies all of the given properties.
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what is 0.5 as a fraction
Answer:
1/2 is the answer
Step-by-step explanation:
Answer:
5/10
Step-by-step explanation:
glenn bought 3 pounds of tomatoes. he used 5-eighths of them to make sauce. questionmake an equation that shows the number of pounds of tomatoes glenn used for the sauce. move numbers and symbols to the blanks to complete the equation. if there is no whole number in the answer, put a 0 in the first box after the equals sign.
He used \($=1 \frac{7}{8} \mathrm{lb}$\) . An algebraic equation, often known as a polynomial equation
What are mathematical equations?An algebraic equation, often known as a polynomial equation, is a mathematical equation of the kind P=0 where P is a polynomial with coefficients in some field, typically the field of the rational numbers. Transcendental equations are what they are known as. The phrase "is not solvable by radicals" is used to describe a polynomial problem that you are unable to solve. A nontrivial differential-algebraic equation called a universal differential equation (UDE) has the feature that every continuous function on any interval of the real line can be approximated to arbitrary accuracy by one of its solutions.Determine the number of pounds used
To solve this, we simply multiply the fraction of tomato used by the total;
\(Used $=$ Fraction $*$ Total\)
Used\(=\frac{5}{8} * 3 l b$\)
Used\(=\frac{5 * 3}{8} l b$\)
Used = 15/8 lb
Convert to mixed number
Used \($=1 \frac{7}{8} \mathrm{lb}$\)
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6 -9x = 5x -10x + 2 solve for x
100 pts!!
Thanh rents a car. He has a fixed rate of $49.00 weekly, pays $14.00 per week for the optional insurance, and he spends $12.00 weekly on gas. What will Thanh's cost be per month (four weeks)?
Thanh's cost per month (four weeks) will be $300.00.The given fixed rate for Thanh is $49.00 per week. Thanh also pays $14.00 per week for the optional insurance and $12.00 weekly on gas.
To find Thanh's cost per month (four weeks), we need to multiply his weekly cost by 4.We can use the formula below to calculate Thanh's monthly cost.
Total weekly cost = Fixed rate + Insurance cost + Gas cost
Total weekly cost = $49.00 + $14.00 + $12.00
Total weekly cost = $75.00
The cost for Thanh per month (four weeks) = Total weekly cost × 4
Cost for Thanh per month (four weeks) = $75.00 × 4
Cost for Thanh per month (four weeks) = $300.00
Therefore, Thanh's cost per month (four weeks) will be $300.00.
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PLS HELP ME!
A ladder 25ft long leans against a vertical wall with it's foot on level ground 7ft from the base of the wall. If the foot is pulled away from the wall at the rate 2ft/s , Express the distance (yft)of the top of the ladder above the ground as a function the time t second in moving
Answer:
what is this language
Step-by-step explanation:
Answer:
hope it will help you.....
find the positive suare root of the following number 57.27
The positive square root of 57.27 is approximately 7.5726, with further decimal places available through iterative approximation methods.
To find the positive square root of the number 57.27, we can use a calculator or mathematical operations.
Taking the square root of a number involves finding a value that, when multiplied by itself, gives the original number. In this case, we want to find the value that, when squared, equals 57.27.
Using a calculator, we can find the square root of 57.27 as approximately 7.5726. However, it's important to note that this is an approximation and may not be completely accurate due to rounding errors.
If we want to find a more precise answer manually, we can use iterative approximation methods. One such method is the Newton-Raphson method, which involves repeatedly refining an initial guess.
Starting with an initial guess of, let's say, 7, we can use the formula:
x(n+1) = (x(n) + (57.27/x(n)))/2,
where x(n) is the current approximation and x(n+1) is the next approximation. Iterating this formula a few times will converge to a more accurate value.
After a few iterations, we find that the positive square root of 57.27 is approximately 7.572615. This value can be further refined by performing more iterations or using more advanced numerical methods.
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The sum of two numbers is 17 and the quotient is 70
Answer:
The Sum of 2 Numbers is 17 & Their Product is 70. Find the Numbers -
Step-by-step explanation:
The Factors of 70 are - 1, 2, 5, 7, 10, 14, 35 & 70
Now, Find the two Factors, when added gives the Sum as 10 & the Product of Multiplication as 17 -
From the given Statement, we can see that when the Factors 7 & 10, when Added gives the Sum as 17 and Their Product as 70 *(7 + 10 = 17 ; 7 × 10 = 70)
Therefore, the two Numbers are 7 & 10
What is the correct answer please I’m stumped
Answer:
The choose C. 2
\(( \frac{4 ^{ \frac{5}{4} } \times 4^{ \frac{1}{4} } }{4 ^{ \frac{1}{2} } } )^{ \frac{1}{2} } = 2\)
Answer:
2
Step-by-step explanation:
inside the parenthesis is equivalent to 4^(5/4 + 1/4 - 1/2) = 4¹ = 4
√4 = 2