Answer:
2%
Correct Answer : 2%
Required Percentage = [ (130/(6.5 * 1000)) * 100]% = 2%.
Step-by-step explanation:
please give me a heart anyone else please give me a heart thank you
A researcher is testing a new painkiller that claims to relieve pain in less than 15 minutes, on average.a.State the hypotheses associated with the researcher's test. (2 points)
Answer:
I have a feeling it won't be exactly 15 minutes but it'll be around that time, if it's true.
Step-by-step explanation:
Determine which regions contain cube roots of -1. Check all that apply.
on real axis
on imaginary axis
quadrant 1
quadrant 2
quadrant 3
quadrant 4
Answer:
A:on real axis C:quadrant 1 F:quadrant 4
Step-by-step explanation:
I took the assignment
Cube roots of -1 lies in the region given in the best options are A. on real axis, B. quadrant 1, F. quadrant 4.
What is cube roots of -1?
Cube roots of -1 mean "finding solution of the equation z³ = -1 since the equation is of order 3, the equation has 3 roots in complex field."
According to the question,
Cube roots of -1 can written as [tex](-1)^\frac{1}{3}[/tex].
Step (1): Write the given number in polar form
x = [tex](cos 0 - i sin 0)^\frac{1}{3}[/tex]
Step (2): Add 2kπ to the argument
x = [tex](cos 2k\pi - i sin 2k\pi )^\frac{1}{3}[/tex]
Step (3): Apply [tex]De[/tex] [tex]Moivre's[/tex] theorem = [tex](cos \alpha + i sin\alpha) = (cos n\alpha + i sin\alpha )[/tex]
x = [tex]\frac{cos2k\pi }{3} - i sin \frac{2k\pi }{3}[/tex]
Step (4): Put k = 0,1,2 .... (n-1) [sin (-θ) = -sin θ, cos(-θ) = cos θ]
The three roots are
cos 0 - [tex]i[/tex] sin 0, cos [tex]\frac{2\pi }{3}[/tex] - [tex]i[/tex] sin [tex]\frac{2\pi }{3}[/tex], cos [tex]\frac{4\pi }{3}[/tex] - [tex]i[/tex] sin [tex]\frac{4\pi }{3}[/tex]
-1, [tex]-\frac{1}{2} - i\frac{\sqrt{3} }{2}[/tex], [tex]\frac{-1}{2} + i \frac{\sqrt{3} }{2}[/tex] are the three roots of cube roots of -1.
Clearly three roots lies in the regions of real axis, quadrant 1 and quadrant 4.
Hence, Cube roots of -1 lies in the region given in the best options are A. on real axis, B. quadrant 1, F. quadrant 4.
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What is the coefficient of the third term in this expression?
n + 1 + 3m + 2k
Answer:
3 ismthe coefficient of 3m
For what value of a does
9 = (1/27) a+3
Answer: a = 162
Step-by-step explanation:
Answer:
a=162
Step-by-step explanation:
Help plzzz!!!! 20+ PTS and Brainliest!!!!!!
Answer: Well be honest with the answer. What does it mean to you.
Step-by-step explanation:
At the beginning of the story, what is the narrator's point of view about immigrating to America? Anya is grateful that there will be new opportunities for her Anya is angry and upset about having to leave Russia Anya is anxious about having to learn English Anya is excited to be making a home in a new country Question 2 50 pts
Answer:
Anya is angry and upset about having to leave Russia
Step-by-step explanation:
This question is from the diary of a 13 year old girl Anya Bulgakov. In the first paragraph from the story, Landing at Ellis island, we can see that Anya is not happy with the idea of moving to America. Her mother and father are obviously happy as they told her their new American home was going to be full of opportunities.
Anya is upset about the whole idea as she reminded them that she doesnt speak English so know any american custom. She ended this paragraph with; I miss my real home. Which is Russia
What is the center of the circle with equation x^2 + y^2 - 10x +6y-2= 0
Answer:
C(5, -3)
Step-by-step explanation:
Given the equation of circle;
x² + y² - 10x + 6y - 2 = 0
The general equation for a circle is given by the formula;
x² + y² + 2gx + 2fy + c = 0
Where the center is C(-g, -f)
To find the center, we would compare the two equations;
For the value of g.
2gx = -10x
2g = -10
g = -10/2
g = -5
To find the value of f.
2fy = 6y
2f = 6
f = 6/2
f = 3
Therefore, the center C(-g, -f) = (-(-5), -(3))
C(-g, -f) = C(5, -3).
Part A
The length (l) of a rectangular box is 5 centimeters more than twice its width (w).
Write an equation to represent the length of the rectangular box.
Part B
Find the length of the box if its perimeter is 100 centimeters.
Answer:
length of rectangular box = 2[w] + 5
length of rectangular box = 35 cm
Step-by-step explanation:
Given:
length (l)
width (w)
Perimeter = 100 centimetre
Computation:
Part A;
length of rectangular box = 2[width] + 5
length of rectangular box = 2[w] + 5
Part B;
Perimeter = 2[l+w]
100 = 2[2w + 5 + w]
100 = 6w + 10
w = 15 cm
length of rectangular box = 2[w] + 5
length of rectangular box = 2[15] + 5
length of rectangular box = 35 cm
Simplify 2a + 6b - 3(4a - b)
Answer:
Answer: -10a+9b (I think)
(a) Which of the following surveys probably would best represent the entire
population of seniors?
50 student council members are randomly selected; 44 plan to go to a 4-year
college.
O 50 seniors are randomly selected; 34 plan to go to a 4-year college.
50 honor roll students are randomly selected from the senior class; 42 plan to
go to a 4-year college.
Answer:
c
Step-by-step explanation:
i took the quiz
Simplify 8(x-3)-4(2x-7)
Answer:
Your solution is 4.
Step-by-step explanation:
what is the square root of 430
Answer:
√430 or 20.74
Step-by-step explanation:
√430
Prime factorize 430
√2 · 5 · 43
There are no pairs to take out of the root, so the most simplified form of √430 is √430.
If you want the decimal form, it is 20.74
Please mark me Brainliest :)
what are two different ways you can show 103?
Answer:
100+3, a hundred three.
Step-by-step explanation:
The volume of this cylinder is 175 cubic units. What is the volume of a cone that has the same base area and the same height?
Answer:
58.33 cubic units
Step-by-step explanation:
Volume of cone
= 1/3 * Volume of cylinder
= 1/3 * 175
= 58.33 cubic units
Answer:
58 1/3
Step-by-step explanation:
1/3*175=58.3333333
or 58 1/3
Please help this is due ASAP
Answer:
Pretty sure its the third option
Step-by-step explanation:
which one the following is example of kinetic energy A) a compressed spring B) water that has been released through spillway C) molecules at temperature below absolute zero D) a battery
A local hair salon has 6 2/3 gallons of shampoo to split among 5 hairdressers. How much shampoo will each hairdresser receive?
Answer:
1 1/3 gallons of shampoo
Step-by-step explanation:
The above question is calculated as:
5 hairdressers = 6 2/3 gallons of shampoo
1 hairdresser = x gallon
We cross Multiply
5 hair dressers × x gallon = 6 2/3 gallons × 1 hair dresser
x gallon = 6 2/3 gallons × 1 hair dresser/5 hair dressers
x gallons = 6 2/3 gallons ÷ 5
x gallons = 20/3 gallons ÷ 5
= 20/3 × 1/5
= 4/3
= 1 1/3 gallons of shampoo
Therefore, each hair dresser would receive 1 1/3 gallons of shampoo
If the Mona Lisa is 2 1/2 feet by 1 3/4 feet and they want to put it on a 11 x 9 notebook what is the scale factor
One year, the population of a city was 160,000. Several years later it was 140,800. Find the percent decrease.
Answer:
Percent decrease in population = 12%
Step-by-step explanation:
Given that:
Population of city = 160,000
Population of city after several years = 140,800
Difference= 160000 - 140800 = 19200
Percent decrease = [tex]\frac{Difference}{Population} * 100[/tex]
Percent decrease = [tex]\frac{19200}{160000}*100[/tex]
Percent decrease = 0.12 * 100
Percent decrease = 12%
Hence,
Percent decrease in population = 12%
An elevator can carry up to 2500 pounds. Suppose the weight is 150 pounds. At most how many average-sized adults can safely ride the elevator at the same time? Write an inequality and solve. Let p represent the number of people who can safely ride the elevator.
Answer:
How much do the adukts weigh?
Step-by-step explanation:
Solve the system by graphing. Tell whether the system has one solution, infinitely many solutions, or no solution.
y-x=4
2y=2x + 8
infinitely many solutuinsAnswer:
Step-by-step explanation:
Which equation can be used to solve the problem?
10 is 50 percent of what number?
Answer:
x*50%=10
Step-by-step explanation:
x*50%=10
/50% /50%
x=20
10 is 50 percent of what number? StartFraction 10 divided by 1 Over 50 divided by 1 EndFraction = StartFraction 10 Over 50 EndFraction StartFraction 100 times 2 Over 50 times 2 EndFraction = StartFraction 200 Over 100 EndFraction
The following triangles are similar. Find x
Answer:
15
Step-by-step explanation:
if 3x3 is 9 and 4x3 is 12 then 5x3 is 15
Grace scored n points in her first basketball game of the season. She scored 8 more points in her second game than in her first, 3 fewer points in her third game than in her second, and 11 more points in her fourth game than in her third, scoring a total of 25 points in her fourth game. How many points did Grace score in her first game?
Answer:
Grace scored 9 points in her first game.
Step-by-step explanation:
In her first game, she scored n points.
She scored 8 more points in her second game than in her first
So n + 8.
3 fewer points in her third game than in her second
So n + 8 -3 = n + 5
11 more points in her fourth game than in her third
n + 5 + 11 = n + 16
A total of 25 points in her fourth game.
This means that:
n + 16 = 25
n = 9
So
Grace scored 9 points in her first game.
Are 3(h+4) and 3h + 12 equivalent? Explain using the table from Question 4.
Picture of question 4
Find the largest number which divides 94 and 76, leaving a remainder of 4.
Answer:
6 for 76 and 5 for 94
Step-by-step explanation:If you divide 76 with 6 the quotient will be 12 and the remainder will be 4 and if you divide 94 by 5 the quotient will be 18 and the remainder will be 4. Thank me later .
The largest number which divides 94 and 76, leaving a remainder of 4. is 18.
It is required to find the largest number.
What is factor?A number or algebraic expression that divides another number or expression evenly—i.e., with no remainder.
Given:
we have to find the largest number which divide 94 and 76 leaving remainder 4 in each case.
According to given question we have
so let us subtract 4 from 94 and 76.
⇒ 94−4=90
⇒ 76−4=72
now lets find the HCF
⇒ prime factorization of 90 = 2 × 3 × 3 × 5
prime factorization of 72 = 2 × 2 × 2 × 3 × 3
now lets take out the common factors from both the cases
⇒ 2,3 and 3
x=2*3*3=18
∴ 18 is the number which will divide 94 and 76 leaving remainder 4 in each case.
Therefore, the largest number which divides 94 and 76, leaving a remainder of 4. is 18.
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If a pound of barley costs $8, how many ounces can be bought for $2.55?
Answer: I believe the answer would be 5.1 ounces...
Step-by-step explanation:
To get this answer I used a proportion and transformed pounds into ounces. 1lb=16oz
x/16= 2.55/8
Cross multiply....
8x=40.8
And simplify!
x=5.1
So for $8 you can get a pound, for $2.55 you can get 5.1 ounces (or 5 ounces if needed in whole numbers)
Hope this helps! Good luck! (:
Natalie buys organic almonds priced at $82.50 from the grocery store. How much did she pay the cashier, if she received $26.43 in change?
Answer:
I believe that the answer is $56.07
Step-by-step explanation:
What I did is, subtract the $82.50 and the $26.43 and got the answer $56.07.
can someone please help
Heeelllllpppp due Monday I give I suck at math??
Answer:
13.125
Step-by-step explanation:
Since the triangles are congruent, you would get the equation 4z-7=11z-112.
Then, you would subtract 4z from each side, leaving behing -7=8z-112. Then, you would add 112 to each side, getting 105=8z. Divide both sides by 8, and your answer is z=13.125
