Answers
Answer:
how do u even do this
Step-by-step explanation:
Related Questions
solve the equation P=b+c+a solve for b
Answers
Answer:
b = P - c - a
Step-by-step explanation:
hello , how to do 6(iii)?
Answers
Answer:
[tex]\displaystyle \frac{dS}{dt}=\frac{3}{50r}[/tex]
Step-by-step explanation:
Water is being pumped into an inflated rubber sphere at a constant rate of 0.03 cubic meters per second.
So, dV/dt = 0.03.
We want to show that dS/dt is directly proportional to 1/r.
In other words, we want to establish the relationship that dS/dt = k(1/r), where k is some constant.
First, the volume of a sphere V is given by:
[tex]\displaystyle V=\frac{4}{3}\pi r^3[/tex]
Therefore:
[tex]\displaystyle \frac{dV}{dt}=4\pi r^2\frac{dr}{dt}[/tex]
Next, the surface area of a sphere S is given by:
[tex]\displaystyle S=4\pi r^2[/tex]
Therefore:
[tex]\displaystyle \frac{dS}{dt}=8\pi r\frac{dr}{dt}[/tex]
We can divide both sides by 2:
[tex]\displaystyle \frac{1}{2}\frac{dS}{dt}=4\pi r\frac{dr}{dt}[/tex]
We can substitute this into dV/dt. Rewriting:
[tex]\displaystyle \frac{dV}{dt}=r\Big(4\pi r\frac{dr}{dt}\Big)[/tex]
So:
[tex]\displaystyle \frac{dV}{dt}=\frac{1}{2}r\frac{dS}{dt}[/tex]
Since dV/dt = 0.03 or 3/100:
[tex]\displaystyle \frac{3}{100}=\frac{1}{2}r\frac{dS}{dt}[/tex]
Therefore:
[tex]\displaystyle \frac{dS}{dt}=\frac{3}{50r}=\frac{3}{50}\Big(\frac{1}{r}\Big)[/tex]
Where k = 3/50.
And we have shown that dS/dt is directly proportional to 1/r.
If Laura bikes x miles to and from her friend's house each day, what expression can be used to calculate the total distance she travels in a week?
x / 7
x + 7
7x
7 – x
Answers
Answer:
7x
Step-by-step explanation:
This is because x represents how many miles she rides each day, so you need to multiply x by the 7 days in a week
Equivalent factored form for 10x^2+15x-9=2x^2+x-14
Answers
David wants to buy a bowling ball that has a price of $120. As a member of a bowling league, he is entitled to a 15% discount off the price of the bowling ball. He will also have to pay 6% sales tax on the discounted price of the bowling ball. What is the final price David pays for the bowling ball, after the sales tax and discount applied?
Answers
Answer:
$109.2
Step-by-step explanation:
Given data
Cost of bowling ball= $120
DIscount= 15%
Tax= 6%
let us calculate the discount and tax
=15/100*120
=0.15*120
=$18
=6/100*120
=0.06*120
=$7.2
In all the bill is 120-18+7.2
=102+7.2
=$109.2
The measure of angle 7 is
pls help quickly
Answers
Answer:
209 degrees
Step-by-step explanation:
Any help? Still learning this so it’s not of a problem. Thanks!
Answers
HELPPPP: From the top of a light house 50 meters high, the angle of depression of a boat out at sea has a measure of 15°. Find to the nearest meter the distance from the boat to the foot of the light house, which is at sea level.
Answers
Answer:
13m
Step-by-step explanation:
[tex]d=50tan(15)=13m[/tex]
The required distance from the boat to the foot of the light house, which is at sea level is 13meter
Given that,
The top of a light house 50 meters high,
The angle of depression of a boat out at sea has a measure of 15°.
We have to determine,
To the nearest meter the distance from the boat to the foot of the light house, which is at sea level.
According to the question,
The angle of depression may be found by using this formula = opposite/adjacent.
The opposite side in this case is usually the height of the observer or height in terms of location.
Therefore, angle of depression = 15degree
Height of the light house = 50m
The distance from the boat of the light house is denoted by d.
Then the distance from the boat of the light house is given as.
[tex]tan15 = \frac{d}{50} \\\\d = 50 \times tan15\\\\d = 50\times0.26\\\\d = 13[/tex]
Hence, The required distance from the boat to the foot of the light house, which is at sea level is 13meter
For more information about Trigonometry click the link given below.
https://brainly.com/question/2773823
Henry buys a softball for $16 plus a 9% tax. Ella buys a pair of shoes for $17 plus a 9% tax. Enter the difference in the amount Henry and Ella paid, including tax.
Round your answer to the nearest cent.
Answers
Answer:
$1.09
Step-by-step explanation:
1) Sales Tax Amount = Net Price x (Sales Tax Percentage / 100)
2) Total Price = Net Price + Sales Tax Amount
E= $18.53
H= $17.44
18.53 - 17.44= 1.09
You know you need to show your work.
Simplify: ⅕y - ⅗y + 5 - ⅖y - 8
pls
Answers
Answer:
The answer is -(4/5)y - 3.
Step-by-step explanation:
The steps are :
[tex] \frac{1}{5} y - \frac{3}{5} y + 5 - \frac{2}{5} y - 8[/tex]
[tex] = ( \frac{1 - 3 - 2}{5} y) + (5 - 8)[/tex]
[tex] = - \frac{4}{5} y - 3[/tex]
Step-by-step explanation:
⅕y - ⅗y + 5 - ⅖y - 8
-0.8y-3
-4/5y-3
Suppose that 8% of all cars produced at Plant A have a certain defect, and 5% of all cars produced at Plant B have this defect. A quality control manager takes separate random samples of 150 cars from each plant. The manager will then look at the difference (A-B) between the proportions of cars with the defect in each sample.
What will be the shape of the sampling distribution of the difference in sample proportions, and why?
Choose 1 answer:
A. Approximately normal, because we expect 12 defective and 138 defect-free cars from Plant A, and 15 and 135 from Plant B, and all of these counts are at least 10.
B. Approximately normal, because we expect 16 defective and 134 defect-free cars from Plant A, and 10 and 140 from Plant B, and all of these counts are at least 10.
C. Not normal, because we expect fewer than 10 defective cars in Plant A.
D. Not normal, because we expect fewer than 10 defective cars in Plant B.
Answers
Answer:
Not normal, because we expect fewer than 10 defective cars in plant B
Step-by-step explanation:
Answer: D
Not normal, because we expect fewer than 10 defective cars in Plant B. [tex].05*150=7.5[/tex]
Step-by-step explanation: Khan Answer
so as
Milan bought a table for Rs 3600. He sells it to Kirtim at a profit of Rs 205. Kritim sells it at
Rs 4968 to Aayush. Find the percentage profit of Kritim.
Answers
Answer:
23.41%
Step-by-step explanation:
Kirtim's purchase price was 3600 + 205 = 3805,
Kirtim sold the table for 4968 for a profit of 4968 - 3805 = 1163
Assuming requirement is for profit on revenue, so
P = 100 * (1163/4968) = 23.41%
Here is the sales tax on the same items in City 3.
What is the tax rate in this city? Show work on the
sketch. (Remember to round to the nearest penny.)
Sales tax percentage
Check
For the sales tax on the laundry soap, Kiran says it
should be $0.84. Lin says it should be $0.87. Do you
agree with either of them? Explain your reasoning.
I agree with Kiran
I agree with Lin
I don't agree with either of them
Explain your thinking.
cause your multiplying the numbers
Edit my response
Answers
Answer:
This needs more detail.
Step-by-step explanation:
Help? Please? And make sure the answer is right plz!! :) and have a good day
Answers
Answer:
-7
Step-by-step explanation:
The amount of degrees would be the same in both those corner/angle/section are. and have a good day as well!
Which of the following numbers are less than -0.625
A) -8/5
B) -5/8
C)-0.5
*Choose all that apply*
Answers
Answer:
A) -8/5
Step-by-step explanation:
First, convert -8/5 and -5/8 to decimals
-8/5 = -1.6
-5/8 = -0.625
-0.5 is greater than -0.625 because it is closer to 0.
So, the only number less than -0.625 is -8/5, which is equivalent to -1.6
So, the correct answer is A) -8/5
Solve 0 = x2 + 6x + 13 by completing the square.
A. x = 5 and x = 1
B. x = 3 + i22−−√ and x = 3 − i22−−√
C. x = −1 and x = 1
D. x = −3 + 2i and x = −3 − 2i
Answers
Answer:
x = -3 - 2i and x = -3 + 2i
Step-by-step explanation:
I was too lazy to complete the square but solved it on WolframAlpha
If 2d + 10 = 50, what does d equal?
Answers
Answer:
d = 20
Step-by-step explanation:
2d + 10 = 50 ( subtract 10 from both sides )
2d = 40 ( divide both sides by 2 )
d = 20
Answer:d=20
Step-by-step explanation:
Step 1: Subtract 10 from both sides.
2d+10−10=50−10
2d=40
Step 2: Divide both sides by 2.
2/d=40/2
d=20
You are offered a job that pays $41,000 during the first year, with an annual increase of 7% per year beginning in the second year. That is, beginning in year 2, your salary will be 1.07 times what it was in the previous year. What can you expect to earn in your fourth year on the job? Round your answer to the nearest dollar.
Answers
Answer:
50227
Step-by-step explanation:
What is the sum of
-2/9 + 5/9
Answers
Answer:
3/9 i think
Step-by-step explanation:
Another way to see the equation is -2 divided by 9, plus 5 divided by 9.
You divide each sides of the equation first, then you add the answers. One you have your answer as a decimal turn it into a fraction.
jack paid 36.25 for 12 1/2 for his car what is the price per gallon
Answers
Answer:
66.89
Step-by-step explanation:
The width of a room is 1/3 its length if the perimeter is 144 m find the dimensions
Answers
18=54/3
P=L+L+W+W
144m=18+18+54+54
Domain and range anyone?
Answers
Answer:
second one
Step-by-step explanation:
range is the y values
Surface area
BRAINIEST WILL BE GIVEN
Answers
Answer:
716
Step-by-step explanation:
Answer:
856
Step-by-step explanation:
A net of a rectangular pyramid is shown. The rectangular base has length 26 cm and width 24 cm. The net of the pyramid
has length 74.8 cm and width 71.8 cm. Find the surface area of the pyramid.
The surface area is
cm2 help
Answers
Answer:
kk
Step-by-step explanation:
no pic
please answer and make sure youre right i got a 50
Answers
Answer and Step-by-step explanation:
First, let's solve for z.
3z - 1 ≥ -7
We add 1 to both sides.
3z ≥ -6
Now we divide both sides by 3.
z ≥ -2
Since we got this as our answer, that means Answer choice D is the correct answer.
#teamtrees #WAP (Water And Plant)
Work out the perimeter of an equilateral triangle with side length 2.7mm
Answers
Answer:
, so easy
Step-by-step explanation:
3×2.7mm=8.1mm
Answer:
8.1mm
Step-by-step explanation:
equilateral triangle all sides are equal.
If 1 side is 2.7mm what will be the total of three sides. 2.7+2.7+2.7=8.1mm
Amelia calls people at random to conduct a survey. So far, 20 calls have been answered and 30 calls have not been answered. What is the approximate probability that someone answers the next call she makes?
A.
40%
B.
67%
C.
0.6
D.
2/3
Answers
Answer: 40%
Step-by-step explanation:
I guessed on this but i got it right
Answer:
40%
Step-by-step explanation:
The length of a diagonal of a square is 10 square root of 2 inches. Find the length of one side of the square.
Answers
Answer:
10inches
Step-by-step explanation:
Let the length of one side of the square be a
If the diagonal of a square is 10√2 inches
According to pythagoras theorem
a²+a² = (10√2)²
2a² = 100(2)
2a² = 200
a² = 200/2
a² = 100
a = √100
a = 10
Hence the length of one side of the square is 10inches
Our math class is having a field trip . The ratio of boys to girls joining the field trip is 11:4.
Answers
Find the sum of 0.5 and -0.5.
Answers
Amswer
The answer is 0