If x2 = 20, what is the value of x?
Answer:
10
Step-by-step explanation:
20/2=10 so x=10
Answer:
10
Step-by-step explanation:
The International Average Salary Income Database provides a comparison of average salaries for various professions. The data are gathered from publications and reports obtained directly from government agencies (such as the U.S. Bureau of Labor Statistics) or from the International Labour Organization. Suppose you are told that an accountant in Canada who makes $2, 646.00 has a z-score of +0.50 relative to other accountants in Canada and that the standard deviation of the salary of accountants in Canada is $588.00. The average salary, then, for accountants in Canada is _____. Suppose you are also told that an accountant in Portugal who makes $2, 329.40 has a z-score of +2.00 relative to other accountants in Portugal and that the mean of the salary of accountants in Portugal is $1, 553. The standard deviation of the salary, then, for accountants in Portugal is _____ .
Answer:
a)The average salary, then, for accountants in Canada is $2352
b) The standard deviation of the salary, then, for accountants in Portugal is $388.2
Step-by-step explanation:
The formula for calculating a z-score is is z = (x-μ)/σ,
where:
x is the raw score
μ is the population mean
σ is the population standard deviation.
a) Suppose you are told that an accountant in Canada who makes $2,646.00 has a z-score of +0.50 relative to other accountants in Canada and that the standard deviation of the salary of accountants in Canada is $588.00. The average salary, then, for accountants in Canada is _____.
z = (x-μ)/σ
z = 0.50, x =$2,646.00 μ = ?? σ = $588
Hence,
0.50 = 2,646 - μ/588
0.50 × 588 = 2,646 - μ
294 = 2,646 - μ
μ = 2,646 - 294
μ = $2352
Therefore, the average salary, then, for accountants in Canada is $2352
b) Suppose you are also told that an accountant in Portugal who makes $2, 329.40 has a z-score of +2.00 relative to other accountants in Portugal and that the mean of the salary of accountants in Portugal is $1, 553. The standard deviation of the salary, then, for accountants in Portugal is _____ .
z = (x-μ)/σ
z = 2, x = $2,329.40 μ =$1,553 σ = ?
2 = ($2,329.40 - $1,553)/σ
2σ = $2,329.40 - $1,553
σ = $2,329.40 - $1,553/2
σ = $776.4 /2
σ = $388.2
Therefore, the standard deviation of the salary, then, for accountants in Portugal is $388.2
Give an example of two events that are not mutually exclusive.
Answer: in the case of rolling a die the event of getting an 'odd-face' and the event of getting 'less than 4' are not mutually exclusive and they are also known as compatible event. The event of getting an 'odd-face' and the event of getting 'less than 4' occur when we get either 1 or 3.
Step-by-step explanation:
also turning ur body (left and right)
A pair of shoes costs $70.00. How much will the customer pay after 7% sales tax is added to the purchase?
Answer:
4.9
Step-by-step explanation:
70.00x7%=4.9
Which of these statements is correct?
A
A solution to the equation x2=4 is x=16.
B
A solution to the equation x2=64 is x=4.
C
A solution to the equation x3=8 is x=24.
D
A solution to the equation x3=125 is x=5.
A container of coffee holds 12 gallons of coffee. If Mark wants to buy 2 containers of coffee, how many liters will he have in total? (1 gallon is approximately 3.78 liters)
Answer:
Volume
24
US liquid gallon
=
90.8499
Liter
Step-by-step explanation:
HELP!!!
The first two steps of a proof of the Pythagorean theorem are shown. What is the
next step?
a а
a а
b
Step 1
Step 2
A. Rearrange pieces to form a square with side length a + b.
B. Form an outer square that has squares with areas of a2 and b2 inside it.
O C. Move up the sides labeled c.
D. Rotate both triangles to form a square with side length c.
Answer:D
Step-by-step explanation:
I got you!
2. Find the domain and range of the function: *
1 point
f (x)=
3(x + 2)2 +7
212
Domain is all reals, range is y greater than or equal to 7
Domain is all reals, range is y less than or equal to 7
Domain is all reals, range is all reals
Domain is x greater than or equal to 7. range is all reals
Domain is x less than or equal to 7, range is all reals
3.
I think the correct answer would be :
Domain is all Reals , Range is all Reals.
How many degrees is the measurement of the missing angle? (Only numeric answer, no words or symbols at all)
Answer:
65°
Step-by-step explanation:
35° + 80° + x° = 180°
115° + x = 180°
x = 180° - 115°
x = 65°
A theater owner wants to divide a 3300 seat theater into three sections, with tickets costing $40, $80, and $100, depending on the section. He wants to have twice as many $40 tickets as the sum of the other tickets, and he wants to earn $186,000 from a full house. Find how many seats he should have in each section.
The number of $40 seats is__?
The number of $80 seats is__?
The number of $100 seats is__?
Answer:
1,100 for each section
Step-by-step explanation:
3300 divided by 3 equals 1100
I'm giving ⚡️ 100 POINTS ⚡️ for a hella easy question, its provided in the picture i mark BRAINLIEST
Answer:
7620 is the answer.Step-by-step explanation:
7.62 × 10^3= 7.62 × 1000= 7620
If you like this answer then mark this answer as BRAINLIEST answer.....
Thank you ☺️☺️
Is it always true that a line connecting two points on the same side of given line will be parallel to that given line?
Answer: No, its not always true
It is possible to have a parallel line form, but you could easily have the new line intersect the old one. It depends on how you place the points.
Side note: Parallel lines have equal slopes but different y intercepts.
A rectangular athletic field is twice as long as it is wide. If the perimeter of the athletic field is yards, what are its dimensions 76
Answer:
The length is 25.3 yards, while the width is 12.7 yards.
Step-by-step explanation:
Perimeter of a rectangle, P = 2(l + w)
where l is its length and w the width.
Given that:
perimeter = 76 yards
It is twice as long as its wide, length = 2w
width = w
Then,
P = 2(l + w)
76 = 2(2w + w)
divide through by 2, to have;
38 = 2w + w
38 = 3w
⇒ w = 12.67 yards
Thus,
length = 2w = 2 x 12.67 = 25.34 yards
The length is 25.3 yards, while the width is 12.7 yards.
Find the distance from point A to the given line.
Round to nearest tenth
A(2, −1), y = −x + 4
Answer:
Let's see what to do buddy...
Step-by-step explanation:
_________________________________
Step (1)
To find the distance between the line which formed like :
[tex]ax + by + c = 0[/tex]
and the point which is like :
[tex]h = \binom{m}{n} \\ [/tex]
we use following equation :
[tex]d = \frac{ |a(m) + b(n) + c| }{ \sqrt{ {a}^{2} + {b}^{2} } } \\ [/tex]
_________________________________ Step (2)
[tex]y = - x + 4[/tex]
[tex]x + y - 4 = 0[/tex]
So ;
[tex]a = 1[/tex]
[tex]b = 1[/tex]
[tex]c = - 4[/tex]
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
A = ( 2 , - 1 )
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
So we have :
[tex]d = \frac{ | \: 1(2) + 1( - 1) - 4| }{ \sqrt{ {1}^{2} + {1}^{2} } } = \\ [/tex]
[tex]d = \frac{ |2 - 1 - 4| }{ \sqrt{1 + 1} } = \frac{ | - 3| }{ \sqrt{2} } \\ [/tex]
[tex]d = \frac{3}{ \sqrt{2} } \\ [/tex]
_________________________________
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️
A cylinder has a base diameter of 12ft and a height of 12ft. What is its volume in cubic
ft, to the nearest tenths place?
Answer:
1357ft^3 but to the nearest tenths place is 1360ft^3
Step-by-step explanation:
Answer:
1357.2
Step-by-step explanation:
h=12 d=12 r=6
v=(6)∧2(12)
v=1357.16802635
v=1357.2ft∧3
2 points
2) At the sixth-grade school dance, there are 132 boys, 89 girls, and 14
adults. Write the ratio of the number of girls to the TOTAL number of
Mabel earn 180$ in 18 hours.at this rate how many dollars will she earn in 30 hours?
Since she earns $180 in 18 hours, she earns a rate of $ 180/18 per hour, which is $10 per hour.
In 30 hours she earns 30 times 10 dollars, which is 300 dollars.
You could also set up a proportion saying that 180/18 = x/30, then cross multiply to get 18x = 5400, and divide by 18 on both sides to get 300.
Answer:
Mabel will earn 300$ in 30 hours
Step-by-step explanation:
I took 180 and divided it by 18 so that I can find how much money she earns per hour.
180÷18= 10
10 × 30= 300
Pls answer this quick! Thank you!
Answer:
The answer is -11 and -9 only
Step-by-step explanation:
Please help with my Probability Sheet. Integrated Math 2. Spin or Roll.
Answer:
I can't see the pdf
Step-by-step explanation:
please put the image up
16.3 as a mixed decimal
What number is an interger?
A.-3/4 B.0 C.2.3 D.~
Answer:
they are all integers
Step-by-step explanation:
What real number is 7/8
Answer:2 is the answer.
Step-by-step explanation:
The integers are the whole numbers, their opposites, and 0 . From the given numbers, −7 and 8 are integers.
the histogram to the right displays the height of 122 trees and Mr. Maciag's subdivision. He is very excited about autumn and the leaves changing colors. Height ranged between 108 cm and 345 cm. Let the function "f" map a tree height to the frequency of the column that tree belongs to. What is the value of f(250)? Explain the steps you followed to find the value.
Answer: 50
Step-by-step explanation:
f(250) = ?
Is asking, "What is the frequency (number of trees) that have a height of 250"
Look at the graph to see that when x = 250 (height), y = 50 (trees).
Therefore, f(250) = 50
There are 11 frogs at the pond. There are 5 frogs in the water. The rest are in the mud. How many frogs are in the mud?
Answer:
This is easy math. 11-5=6. Six frogs are in the water.
Step-by-step explanation:
11 represents the whole of frogs, and 5 represents the frogs in the water.
Andrew purchased some drinks and some chips. Each bag of chips cost $2.00 and
each drink cost $2.50. The expression 2x + 2.5y gives the total amount of money
spent by Andrew on chips and drinks. What is the meaning of the term 2.5y?
Answer:
2.5y=amount spent on drinks
Step-by-step explanation:
If chips are $2 and drinks are $2.50 and we do not know how many he bought of each, we put this into an equation which is
2x+2.5y
x=number of bags of chips while the 2 is two dollars per bag
so, if he bought 2 bags of chips 2(2)= $4 spent.
y= number of drinks and 2.5 is $2.5 per drink, so if he bought 4 drinks:
2.5(4)= $10 spent on drinks.
The Johnson family income is
estimated to be $125,000 per year. Mary wanted to write this number
in scientific notation. If she wrote
1.25 x 10" , what value of n should
she use?
Answer:
The value of n would be 5
Step-by-step explanation:
This is understanding how to take numbers and writing them in scientific notation.
125,000 = 1.25 x 10⁵
First of all.
125,000 = 125,000.0 (See that decimal point?)
We want that decimal point behind the number 1 as seen in the scientific notation. All you have to do is move that decimal point to the left until you reach the ones place.
125000. → 1.25
(You're not finished yet)
Since we moved the decimal five times, then we must put an exponential value of 5 above the 10
In conclusion:
125,000 = 1.25 x 10⁵
Mr. Jones has to invest in three types of stocks, low-risk, medium-risk, and high-risk. He invests according to three principles. The amount invested in low-risk stocks will be at most more than the amount invested in medium-risk stocks. At least will be invested in low- and medium-risk stocks. No more than will be invested in medium- and high-risk stocks. The expected yields are % for low-risk stocks, % for medium-risk stocks, and % for high-risk stocks. How much money should Mr. Jones invest in each type of stock to maximize his total expected yield?
Answer:
Since the numbers are missing, I looked for a similar question:
Mr. Jones has $9000 to invest in three types of stocks: low-risk, medium-risk and high-risk. He invests according to the following rules: the amount invested in low-risk stocks will be at most $1000 more than the amount invested in medium-risk stocks. At least $7000 will be invested in a combination of low- and medium-risk stocks. No more than $7000 will be invested in a combination of medium- and high-risk stocks. The expected annual returns are 6% for low-risk stocks, 7% for medium-risk stocks, and 8% for high-risk stocks. How much should he invest in each type of stock to maximize his total expected yield?
let:
L = low risk stocks
M = medium risk stocks
H = high risk stocks
maximize 0.06L + 0.07M + 0.08H
L + M + H ≤ 9000
L ≥ M + 1000
L + M ≥ 7000
M + H ≤ 7000
using solver, the optimal solution = 4,000L + 3,000M + 2,000H , which yields a maximum profit = $610
Mr. Jones should invest $4,000 in low risk stocks, $3,000 in medium risk stocks and $2,000 in high risk stocks.
please I need help. you will get points
Answer:
t(32) = 94
Step-by-step explanation:
a. I think s is the independent variable
b I think t or t(s) is the dependent variable since the total amount of money depends on how many treats are sold.
t(32) = 30 + 2(32)
t(32) = 30 + 64
t(32) = 94
I'm a little unsure on the dependent and independent variable but I know the function is correct.
Hope this helps :)
13x -2y -5x +8
1. How many terms are in the expression?
2. Which terms are “like terms”?
3. Are there any constants? If so, what are they?
4. What are the variables in the expression?
5. What are the coefficients in the expression?
Step-by-step explanation:
1. How many terms are in the expression?
The terms are sorted by looking at the sing/indicator in front of them. For this expression there are 4 terms
13x, -2y, -5x, and 8
2. Which terms are “like terms”?
13x and -5x are like terms.
3. Are there any constants? If so, what are they?
Yes there is a constant terms and it's 8
4. What are the variables in the expression?
The variables in this expression are x, and y
5. What are the coefficients in the expression?
Coefficients is the number in front of variables in this expression the coefficients are 13, -2, and -5
Answer:
there are 4 terms
13x and - 5x are like terms
+8 is the only constant term
yes there are variables
the coefficients are ,13,-2, and-5
Step-by-step explanation:
1. A term is any section of a equation that has to do with an operation such as multipulcation or subtraction.
2. like terms are terms that share a common variable with another term.
3. Constants are number in an equation that have no variable and don't change
4. variables are letters used in an equation
5. coeffecients are the number a next to variables make sure to take the negitave or positive sign in front of it to account when solving your problem. variables with out a number in front of them always have a coefficient of 1.
IQ scores have a mean of 100 and a standard deviation of 15. Kate has an IQ of 121. (a) What is the difference between Kate's IQ and the mean
Answer:
(a) The difference between Kate's IQ and the mean is 21
(b) The z score is 1.4
Step-by-step explanation:
Here is the complete question:
IQ scores have a mean of 100 and a standard deviation of 15. Kate has an IQ of 121. (a) What is the difference between Kate's IQ and the mean (b) Convert Kate's IQ score to a z score.
Step-by-step explanation:
(a) To determine the difference between Kate's IQ and the mean, this can be done by subtracting the mean from Kate's IQ.
Mean = 100
Kate's IQ = 121
Difference between Kate's IQ and the mean = 121 - 100 = 21
Hence, the difference between Kate's IQ and the mean is 21.
(b) To convert Kate's IQ score to a z score,
z score is given by the formula
[tex]z =\frac{x - \mu}{\sigma}[/tex]
Where [tex]x[/tex] is the score
[tex]\mu[/tex] is the mean
and [tex]\sigma[/tex] is the standard deviation
From the question,
[tex]x[/tex] = 121
[tex]\mu[/tex] = 100
[tex]\sigma[/tex] = 15
Then, the z score is
[tex]z =\frac{x - \mu}{\sigma}[/tex]
[tex]z =\frac{121 - 100}{15}[/tex]
[tex]z =\frac{21}{15}[/tex]
[tex]z =\frac{7}{5}[/tex]
z = 1.4
Hence, the z score is 1.4.