Pls help asap maths
32/3
Step-by-step explanation:
5 = 3(x-9)
5 = 3x - 27
5 + 27 = 3x
32 = 3x
x = 32/3
Fasting blood glucose levels are normally distributed with mean u = 117
mg/dL and standard deviation o = 15.2 mg/dL. Compute the upper 40.
percent Round answers to 1 decimal place.
the upper 40 percent round answers to 1 decimal place is 113.1
mean( [tex]\mu\\[/tex]) = 117 mg/dL
S.D.(σ) = 15.2 mg/dL
The r code which is used to get 40th percentile in qnorm(0.4,117, 15.2 ) = 113.1
What is mean?
Mean refers to the average of a set of values. The mean can be computed in a number of ways, including the simple arithmetic mean (add up the numbers and divide the total by the number of observations), the geometric mean, and the harmonic mean.
What do you mean by geometric mean?
Geometric Mean (GM) is the average value or mean which signifies the central tendency of the set of numbers by finding the product of their values.
What do you mean by arithmetic mean?
The quantity obtained by summing two or more numbers or variables and then dividing by the number of numbers or variables.
What do you mean byharmonic mean?
The harmonic mean is the reciprocal of the arithmetic mean of the reciprocals.
What do you mean by Standard Deviation?
A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.
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A firm manufactured 1000 Tv sets during its first year.the total firms production during the 10 year of operationis 29035 sets .
For each the level of output for 15th year using per year constant increase in production .
Answer:
6922 TV sets
Step-by-step explanation:
You want the production in the 15th year if production in the first year is 1000 and it increases yearly by a constant amount. The total production in the first 10 years is 29035.
Arithmetic seriesAn arithmetic series is one that has a constant difference from one term to the next. If a1 is the first term of the series, and d is the common difference between terms, the n-th term is ...
an = a1 +d(n -1)
And the sum of n terms is ...
Sn = (2a1 +d(n-1))(n/2)
ApplicationTo find the 15th term, we can make use of the given values to find the common difference, then use the formula for the n-th term.
S10 = (2(1000) +d(10 -1))(10/2) . . . . . sum formula with a1=1000
29035 = 10000 +45d . . . . . . . . . . . simplified
d = (29035 -10000)/45 = 423 . . . . the increase in production each year
Production in the 15th year is ...
a15 = 1000 +423(15 -1) = 1000 + 5922 = 6922
The output in the 15th year was 6922 TV sets.
Find her mistake and it’s due today
Answer:
Step-by-step explanation:
There are 212 parks in the city of Indianapolis and the city has a population of 870,000. What is the number of parks per capita in the city of Indianapolis? Round to 6 decimal places.
The number of parks per capita when there is the total population of 870,000 people and there are 212 parks is 4,103.77358.
What is per captia?
“Per capita” is a Latin term that means “per head.” This term is used to express the average per person, the term “per capita” is occasionally used in statistics instead of “per person.”
On a given case, the per capita parks for population can be calculated by dividing total population by total parks.
According to the given illustration,
Total population of city = 870,000
Total Parks= 212
Calculation of parks per capita in the city of Indianapolis:
Per capita shops = Total population/ Total shops
Per capita shops =870,000/212
Per capita shops = 4,103.77358
Therefore, the number of parks per capita is 4,103.77358.
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A scientist mixes water (containing no salt) with a solution that contains 20% salt. she wants to obtain 120 ounces of the mixture that is 15 % salt. How many ounces of water and how many ounces of the 20% salt solution should she use?
Answer:Say w= the amount of water in oz, then the 60% of the solution is 250 - w
Set up the equation:
Use distributive property first
0.60(250-w) = 0.15 x 250
Isolate to solve for w
150- 0.60w= 37.5
-0.60w= 37.5-150
0.60w= -112.5
w= 187.5 ounces
250-187.5= 62.5 ounces salt solution
Therefore, she must use 187.5 ounces of water and 62.5 ounces of salt solution for her experiment.
Hope this helps!
Step-by-step explanation:
what is the answer for -1/5x + 4 < 39
solution: [tex]x > -175[/tex]
interval notation: (-175, ∞)
explanation:
[tex]-\frac{1}{5}x + 4 < 39\\[/tex]
Subtract 4 from both sides
[tex]-\frac{1}{5}x +4-4 < 39-4\\[/tex]
Simplify
[tex]-\frac{1}{5}x < 35[/tex]
Multiply both sides by -1 (reverse the inequality)
[tex](-\frac{1}{5}x )(-1) > 35(-1)[/tex]
Simplify
[tex]\frac{1}{5}x > -35\\[/tex]
Multiply both sides by 5
[tex]5[/tex] ·[tex]\frac{1}{5}x > 5(-35)[/tex]
Simplify
[tex]x > -175[/tex]
Which graph represents an odd function?
There are 6 points on a coordinate plane. The points are (negative 5, 3), (negative 3, 1), (negative 1, 1), (1, 3), (3, negative 5), (5, negative 1).
There are 8 points on a coordinate plane. The points are (negative 4, 2), (negative 3, negative 1), (negative 1, negative 3), (0, 1), (1, 0), (2, negative 4), (4, 5), (5, 4).
There are 8 points on a coordinate plane. The points are (negative 4, 0), (negative 3, 1), (negative 2, negative 3), (negative 1, negative 2), (1, 2), (2, 3), (3, negative 1), (4, 0)
There are 11 points on a coordinate plane. The points are (negative 4, 3), (negative 4, 4), (negative 3, 5), (negative 2, 1), (negative 1, negative 1), (0, negative 3), (1, negative 1), (2, 1), (3, 5), (4, 3), (4, 4).
Answer: first graph
Step-by-step explanation:
Mr. Abbas has bought a Villa in Saar recently for 80,000 BD. He wants to sell it at a 40% profit. House prices are projected to rise on average by 7% a year.
i) How many years will Mr. Abbas have to wait before selling?
The 80,000 BD Villa in Saar Mr. Abbas plans to sell at a 40% profit , with the annual house price growth rate of 7% (compounded) gives the number of years Mr. Abbas has to wait as approximately 5 years
What is the growth rate on an value?The growth rate is the rate at which the value changes within a specified period.
The amount Mr. Abbas bought the Villar in Saar = 80,000 BD
The profit at which he intends to sell it = 40% = 0.4
The rate at which the house prices rise on average = 7 % per annum
The formula for future value, FV is presented as follows;
[tex]FV = PV\cdot \left(1+\dfrac{r}{100} \right)^n[/tex]
Where;
FV = The future value = 80,000 BD + 0.4 × 80,000 BD = 112,000 BD
PV = The present value = 80,000 BD
r = The rate at which the house prices increases annually
n = The number of years
Which gives;
[tex]112,000 = 80,000\cdot \left(1+\dfrac{7}{100} \right)^n[/tex]
[tex]n = \dfrac{ln\left(\dfrac{112,000 }{80,000}\right) }{ln\left(1+\dfrac{7}{100} \right) } \approx 5[/tex]
The number of years Mr. Abbas has to to wait, n ≈ 5 years
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A road has a speed limit sign at the beginning that is noticed by 84 % of people. 95 % of people who didn't notice the sign speed on the road. Of those who notice the sign, 75 % follow the speed limit.
How many percent of people speeding on this road noticed the sign? In other words, how many people on this road speed on purpose. Give your answer in percentage.
The percentage of people over speeding on this road on purpose is 9%
Find the percent of people speeding on this road who noticed the signPercentage of people who notice the speed limit at the beginning of the road = 84%Percentage of people who didn't notice the sign = 95%Percentage of people who notice the sign and follow the speed limit = 75%Percent of people speeding on this road noticed the sign = Percentage of people who notice the speed limit at the beginning of the road - Percentage of people who notice the sign and follow the speed limit
= 84% - 75%
= 9%
In conclusion, the percentage of people who intentionally speed on purpose is 9%
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I need help with this problem. Please and thank you.
The correct option; B. Two irrational numbers, are the two roots found for the given quadratic equation.
What is defined as the discriminant?In mathematics, a discriminant is a parameter that can be determined for an object or system to help with its categorization or solution. The discriminant for the quadratic equation ax² + bx + c = 0 is b² - 4ac.If the discriminant is positive, the roots of such a quadratic or cubic equation having real coefficients are real and distinct, if the discriminant is zero, the roots are real with at least two equal, and if the discriminant is negative, the roots have included a conjugate pair of complex roots.For the given question;
The quadratic equation is give as;
x² + 5x + 3 = 0
discriminant D = b² - 4ac
b = 5, a = 1 and c = 3
D = 25 - 4(1)(3)
D = 25 - 12
D = 13
√D = √13
As, number is real, there will be two real roots.
As, root of discriminant √D = √13 is a irrational number, the solutions of the given quadratic equation will be two irrational number.
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I need this for today !!!
Answer:
1. reflection
2.translation
3.rotation
4.translation
5.translation
6.reflection
7.rotation
8.reflection
Hope this helps
have a good day
God bless you!
What is 3/4 written in 12 of denominator
Answer: The correct answer in 9/12
Step-by-step explanation:
For 3/4, the numerator is 3 and the denominator is 4
To change the denominator to 12, you must multiply by 3 (12/4=3)
3/4 * 3/3
= (3*3)/(4*3)
= 9/12
It is 163 cm from your eyes to your toes. You're standing 220 cm in front of a tall mirror. How far is it from your eyes to the image of your toes?
The distance between the eyes and the distance to the image of the toes will be 273.80 cm.
What is the Pythagorean theorem?Pythagorean theorem states that in the right angle triangle the hypotenuse square is equal to the square of the sum of the other two sides.
According to this statement, the areas of the squares on the other two sides add up to the size of the square whose side is the hypotenuse.
Given that It is 163 cm from your eyes to your toes. You're standing 220 cm in front of a tall mirror.
The distance between the image of toes and eyes will be calculated as,
H² = P² + B²
H= √(P² + B²)
H = √(163² + 220²)
H = √(26569+48400)
H = √74969
H = 273.80 cm
Therefore, the distance between the eyes and the distance to the image of the toes will be 273.80 cm.
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Children at nutrition are either playing or sitting down resting. The ratio of kids playing to resting is 3:1. If there are 8 children resting, then how many are playing?
Answer: 24 kids playing
Step-by-step explanation: Since the ratio of the kids playing and resting is 3:1, and there are 8 kids resting, replace the 1 with 8, and multiply the 3 with 8 to make the equation balanced. 24:8!
Which point could be used to find f(2)?
A
B
C
D
Point A will represent the input-output values of the function.
What is number line ?
Number line is virtual representation of numbers along with coordinates axis with number equally spaced with equal number of interval.
In the graph of y = f(x),
For every x-value (input value), value of the function is the y-value (output value).
For the input value x = 2,
Output value of the function will be,
y = f(2)
Therefore, point A will represent the input-output values of the function.
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Quill works for a newspaper. He was hired
five years ago. When he was hired, he was
given three vacation days. For each year he
works with the company, he earns two
additional vacation days up to a maximum
of 20 days. How many paid vacation days
does he now get at the end of five years of
employment. If his annual salary is
$64,480, how much does he make during his
vacation?
He got 11 vacation days in five years. If his annual salary is $64,480 he earned during his vacation days $2277
How much vacation time should employee get?The average nationwide is 10, however it varies a little by industry and area. These days off—generally regarded as vacation time—usually get longer the longer an employee works. For the majority of businesses, an employee can receive an additional three to four days per year every five years based on longevity.
The normal recommendation is to wait three to six months. However, the organization and its culture have a big impact. He continued by saying that many businesses make it very clear what their vacation policy is. Some employers allow you to accumulate additional vacation time the longer you work
64,480/12 =5373.33
5373.33/26 = 207
207 x 11 =2277
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He got 11 vacation days in five years. If his annual salary is $64,480 he earned during his vacation days $2277
How much vacation time should employee get?The average across the country is 10, but it varies slightly by region and industry. The length of these vacation days typically increases with an employee's length of service. Based on longevity, most companies allow employees to get an extra three to four days per year every five years.
The usual advice is to hold off for three to six months. The organization and its culture, however, play a significant role. He went on to remark that a lot of companies are quite explicit about their vacation policies. The longer you work for some employers, the more vacation time you can accrue.
64,480/12 =5373.33
5373.33/26 = 207
207 x 11 =2277
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can y’all help me please
Answer:
The slope of this line is undefined.
System of Equations Question:
John is in charge of feeding the pigs and cows on the farm. The cow's food costs twice as much as the pig's food. There are 46 cows and 22 pigs on the farm. John has an $860 budget for food a month. How much can John spend on food for each cow per month?
The amount John will spend on food for each cow per month is approximately 15.08 dollars
How to find the how much each cow feed per month?John is in charge of feeding the pigs and cows on the farm.
The cow's food costs twice as much as the pig's food.
Let
x = cost of pigs food
y = cost cow's food
Hence,
y = 2x
There are 46 cows and 22 pigs on the farm. John has an $860 budget for food a month.
46y + 22x = 860
Therefore, let's combine the system of equation.
y = 2x
46y + 22x = 860
46(2x) + 22x = 860
92x + 22x = 860
114x = 860
x = 860 / 114
x = 7.5 dollars
y = 2(7.54) = 15.08 dollars
Therefore, the cost of food for each cow is 15.08 dollars
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Premise 1: If a person lives in San Francisco, then they live in California. Premise 2: Fred does not live in San Francisco. Conclusion: Fred does not live in California. Let A be the set of people who live in San Francisco, and let B be the set of people who live in California. (a) Draw the Venn diagram that can be used to demonstrate the above information. Include labels for both circles and mark the location of the X. Then choose which option matches your answer? ? C X B (A) B (B) B (C) B (D) А X B (E) (b) Is this argument valid or invalid? Explain on your work paper how you made this conclusion. Invalid
Nice work on selecting "invalid" as the correct answer.
The reason why this argument is invalid is because the 'x' could be in circle B or could be outside circle B. There's simply not enough information.
The venn diagram would either be (A) or (D).
The only information we know is that Fred is does not live in San Francisco, so the 'x' will not be placed inside circle A.
Ignore any diagram where x is on the edge of a circle. That isn't allowed in venn diagrams because a person is either in San Francisco, or they aren't (same goes with California). We can't have blurry boundaries like that. This means venn diagrams (B) and (C) are nonsensical.
Q1) Reggie's annual salary increased from $43,400 to
$46,300 this year and his colleague Gerald's annual
salary increased from $39,970 to $43,720. Who received
a higher rate of increase this year?
Answer:
Gerald received the higher rate of increase
Step-by-step explanation:
Which equation represents a line which is parallel to the line y = -2x - 7?
y = -2x is line parallel to given line.
What is line?
A line has length but no width, making it a one-dimensional figure. A line is made up of a collection of points that are endlessly stretched in the opposing directions.
Main body:
The slope-intercept form is
y=mx+b, where
m is the slope and b is the y-intercept.
y=mx+b
Using the slope-intercept form, the slope is −2.
m=−2
To find an equation that is parallel, the slopes must be equal. Find the parallel line using the point-slope formula.
Use the slope −2 and a given point (0,0) to substitute for
x₁ and y₁ in the point-slope form
y−y₁=m(x−x₁)
, which is derived from the slope equation
m=(y₂−y₁)/(x₂−x₁).
y−(0)=−2*(x−(0))
Simplify the equation and keep it in point-slope form.
y+0=−2⋅(x+0)
Solve for y.
y=−2x
Hence y = -2x is line parallel to given line.
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Rebecca wants to buy a new phone. She has already saved $110 and received a gift of $50 from her grandmother that she added to her savings. She plans to earn the rest by selling necklaces for $5 each. The phone she wants to purchase costs $485. Write an equation that represents how many necklaces Rebecca will need to sell in order to have enough money to get her phone.
Answer:
Step-by-step explanation:
She needs to sell 65 necklaces.
¿Cuántas personas podrán ir sentadas en 5 buses si en cada uno se suben 85 personas y solo van sentados tres quintas partes de esas personas?
The number of people that are seated in the buses is 425
How to calculate the number of people?From the information, there are 5 buses and there are 85 people in each. Therefore, the total number of people will be:
= 85 × 5.
= 425
Since 3/5 of those people are seated, the number of people seated will be:
= Fraction of those seated × Total number of people.
= 3/5 × 425
= 255
Therefore, there are 255 people.
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Deion plans to repaint some classroom bookcases. He has 3 5 /1 gallons of paint. All of the bookcases are the same size and each requires 1/5 gallon of paint. How many bookcases will he be able to paint?
The bookcases that Deion will be able to paint is 16.
What is a fraction?It should be noted that a fraction is a part of a whole number that has a numerator and denominator.
In this case, Deion has 3 1/5 gallons of paint and all of the bookcases are the same size and each requires 1/5 gallon of paint.
The number of bookcase needed will be:
= Total gallons / Gallons for each
= 3 1/5 ÷ 1/5
= 16/5 ÷ 1/5
= 16/5 × 5/1
= 16
He can paint 16 cases.
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The population of city A is 24% less than the population of city B, so city A's population is _____% of city B's.
Answer:
76%
Step-by-step explanation:
100%-24%=76%
what is the vaule of 2 × 4^2 + 5 enter the answer in the box
The value of the expression 2 x 4² + 5 will be 37
What is expression in mathematics?An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation.
Given is the following expression -
2 x 4² + 5
On solving the expression, we get -
2 x 4² + 5
2 x 4 x 4 + 5
32 + 5
37
The value of the expression 2 x 4² + 5 will be 37
Therefore, the value of the expression 2 x 4² + 5 will be 37
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PLEASE HELP!! PLEASE I WILL GIVE YOU BRAINLIST!! PLEASE ASAP :)
LMNP is rotated 180° clockwise about the origin.
What are the coordinates of M' ?
Answer:
M'(-3, -4)
Step-by-step explanation:
the coordinate rules for a rotation of 180 degrees is (x, y) --> (-x, -y)
Basically, you just change both values (x and y) of M to negative. Then bam, u got the coordinates for M'
Translate each phrase into a variable expression. Use n for the variable.
Nine increased by twice a number
The expression of the phrase " Nine increased by twice a number " is 2n + 9
The given phrase is
Nine increased by twice a number
We have to convert the the phrase to the expression
The expression is the mathematical statement that consist of different variables, numbers and mathematical operators. The mathematical operators are addition, subtraction, division and multiplication. The equal sign and inequality will not be the part of expression.
Consider the number as n
Twice the number = 2n
nine increased by twice a number = 2n + 9
Hence, the expression of the phrase " Nine increased by twice a number " is 2n + 9
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Find which are the errors and solve correctly the problem:
Answer:
[tex]f^{-1}(y) = \sqrt{x-5}[/tex]
Step-by-step explanation:
You have to switch the f(x) to x and the x's to y's
[tex]x = y^2 + 5[/tex]
[tex]\sqrt{x-5} = \sqrt{y^2}[/tex]
[tex]y = \sqrt{x - 5}[/tex]
