Answer:
A
Step-by-step explanation:
Multiple by 10 and 100
8*10=
Answer:
Step-by-step explanation:
80
The radius of a right circular cone is increasing at a rate of 5 inches per second and its height is decreasing at a rate of 3 inches per second. At what rate is the volume of the cone changing when the radius is 50 inches and the height is 20 inches
Answer:
1700π in³/s
Step-by-step explanation:
Volume of a cone is expressed as
V = 1/3πr²h
Given
dr/dt = 5in/s
dh/dt = 3in/s
radius r = 50in
h = 20in
Required
dV/dt = ?
dV/dt = dV/dr * dr/dt + dV/dh*dh/dt
dV/dr = 1/3πh (5) + 1/3πr²(2)
dV/dt = 1/3π(20)(5)+1/3 π(50)²(2)
dV/dt = 100π/3 + 5000π/3
dV/dt = 5100π/3
dV/dt = 1700π in³/s
If A=(-1, -3) and B=(11,-8), what is the length of AB?
A. 14 units
B. 13 units
C. 12 units
D. 11 units
9514 1404 393
Answer:
B. 13 units
Step-by-step explanation:
The distance formula can be useful.
d = √((x2 -x1)² +(y2 -y1)²)
d = √((11-(-1))² +(-8-(-3))²) = √(12² +(-5)²) = √(144 +25) = √169
d = 13
The length of AB is 13 units.
_____
If you're familiar with a few of the small Pythagorean triples, you would know that for integer coordinates, an integer answer is most likely to be 13. The x- and y-differences in coordinates being 12 and 5 confirm that the (5, 12, 13) triple is being used here.
There are no Pythagorean triples with hypotenuse values of 11, 12, or 14. (3, 4, 5) can be doubled to give (6, 8, 10), but 10 is not a choice.
NASA uses a launch clock to measure time before and after lift-off. It takes 2 hours and 15 minutes of preparations on base, 20 minutes to travel to the launch pad, and 40 minutes of pre-launch checks once in the spacecraft. When should the astronauts begin preparation?
–3 hours 15 minutes, because all the preparation times add to 3 hours and 15 minutes
–3 hours 35 minutes, because all the preparation times add to 3 hours and 35 minutes
–2 hours 35 minutes, because all the preparation times add to 2 hours and 35 minutes
–2 hours 15 minutes, because all the preparation times add to 2 hours and 15 minutes
Answer:
–3 hours 15 minutes, because all the preparation times add to 3 hours and 15 minutes
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
i took the quiz
simplify √42
I need to know the answer
Answer:
6.48074069 …
Step-by-step explanation:
if you are asked to simplify the radical, then it is already in its simplest form and cannot be simplified further.
If you are asked to solve for the answer, then a simple calculator entry will give us √42 = 6.481 (nearest thousandths)
Robert wants to get serious about saving for a new car. What account would you recommend
Answer:I would recommend a saving account .
Step-by-step explanation: Put a certain amount of money in evrey couple weeks or so and do not take any out
Please simply the answer please I really need help.
Answer:
7/2
Step-by-step explanation:
Answer:
3 1/2 or 7/2
Step-by-step explanation:
To divide fractions, you keep change flip, so you would get to 7/9*9/2 or 63/18. You can divide both of these numbers by 3 to get 21/6, which you can divide by 3 again to get 7/2
which expression is true
Answer:
C
Step-by-step explanation:
The square root of 155 equals 12.449.. which means its less than 13 but more than 12.
1. In a box full of different fruit 30% of them are apples. If there are 15 apples in
the box, how many total pieces of fruit are in the box?
Your answer
Answer:
50
Step-by-step explanation:
15/x=30/100
30x=1500
x=50
there are 50 apples in the box.
part/whole = percent/100
15/x = 30/100
30x = 1500
x = 50
10 1/9+5 14/15
what is the sum ?
Please help
Answer:
16 2/45
Step-by-step explanation:
10 + 5= 15
1/9 + 14/15= 47/45
47/45= 1 2/45
1 2/45 + 15= 16 2/45
What percent of the observations in a distribution lie between the first quartile and the third quartile
Answer:
The value is [tex]k = 50\%[/tex]
Step-by-step explanation:
Generally quartiles divide observation into four parts
The first quartile takes up 25% of the observation
The second quartile takes up 50% of the observation
The third quartile takes up 75% of the observation
The fourth quartile takes up 100% of the observation
Generally the percentage of the observation that lies between the first and the third quartile is mathematically represented as\
[tex]k = 75\% - 25\%[/tex]
=> [tex]k = 50\%[/tex]
Using the concepts of quartiles and percentiles, it is found that 50% of the observations in a distribution lie between the first quartile and the third quartile.
A measure is said to be at the xth percentile of a data-set if it is greater than x% of the observations in the data-set.The first quartile is the 25th percentile, as [tex]\frac{100}{4} = 25[/tex]. The third quartile is the 75th percentile, as [tex]3\frac{100}{4} = 75[/tex].To find the percentage between, we subtract the percentiles, hence:
75 - 25 = 50
50% of the observations in a distribution lie between the first quartile and the third quartile.
A similar problem, which involves percentiles, is given at https://brainly.com/question/24495213
Alan says that a growth rate of 12% per year is equivalent to a growth rate of 1% per month because there are 12 months in a year and 12%÷12=1%. Explain why Alan is mistaken, and approximate the correct monthly growth rate that is equivalent to an annual growth rate of 12%. Round to two decimal places. Show your work, please. Thank you!
hi please help quick
1 7/12 + 4 1/3
A. 5 8/15
B. 5 11/12
C. 3 3/12
D. 3 6/9
Answer: B
Step-by-step explanation:
Answer:
B. 5 11/12
Step-by-step explanation:
Simplify the following:
1 + 7/12 + 4 + 1/3
Put 1 + 7/12 + 4 + 1/3 over the common denominator 12. 1 + 7/12 + 4 + 1/3 = 12/12 + 7/12 + (12×4)/12 + 4/12:
12/12 + 7/12 + (12×4)/12 + 4/12
12×4 = 48:
12/12 + 7/12 + 48/12 + 4/12
12/12 + 7/12 + 48/12 + 4/12 = (12 + 7 + 48 + 4)/12:
(12 + 7 + 48 + 4)/12
| 2 |
| 4 | 8
| 1 | 2
| | 7
+ | | 4
| 7 | 1:
Answer: 71/12 = Convert to a mixed number:
71/12
Divide 71 by 12:
1 | 2 | 7 | 1
12 goes into 71 at most 5 times:
| | | 5
1 | 2 | 7 | 1
| - | 6 | 0
| | 1 | 1
Read off the results. The quotient is the number at the top and the remainder is the number at the bottom:
| | | 5 | (quotient)
1 | 2 | 7 | 1 |
| - | 6 | 0 |
| | 1 | 1 | (remainder)
The quotient of 71/12 is 5 with remainder 11, so:
Answer: 5 11/12
What is this rate written as a UNIT RATE?
6 miles in 2 hours
Answer:
3 miles in 1 hour
Step-by-step explanation:
6÷2=3 miles
2÷2=1 hour
18) Solve each equation for the given variable.
C = 21 r Solve for r
Answer:
r=c/21
Step-by-step explanation:
Write an equation of the line with the given slope, m, and y-intercept (0,b).
m = -3/4, b= 1/2
Answer:
y = -3/4x+1/2
Step-by-step explanation:
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pplease help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
1/125
Step-by-step explanation:
Negative exponents don't make the number negative, it means that you divide the number by itself. So 1/(5×5×5) which is 1/125.
Answer:
the last one - 1/125
Step-by-step explanation:
Imagine that your team has been assigned by a construction company to measure the dimensions of an empty lot in a subdivision. Briefly give examples of the 6 types/sources of errors described above and explain what you would do to minimize them.
Answer:
All explained below.
Step-by-step explanation:
The sources of errors are;
1) Instrumental Errors: This could be as a result of wrong calibration of equipment.
2) Observational Systematic errors: An example of this is parallax error while taking a reading.
3) Environmental random errors: In this type of error, a slight change in the temperature of humidity in the lot could possibly affect the accuracy of the measurement.
4) Observational random errors: This refers to errors gotten when the values are incorrectly read or incorrectly interpolated.
5) Environmental systematic errors: An example of this is that the current supplied to the instrument taking the reading may be low. Thus, this may affect effective reading.
6) Theoretical systematic errors: This could arise from over simplification of the experimental model. An example of this is that the experiment might require a totally frictionless surface which may not be achievable. And this will lead to wrong measurement.
Minimizing the errors:
1) Instrumental Errors can be minimized by ensuring proper calibration of equipment before use.
2)Observational Systematic errors can be minimized by ensuring readings are not taken at an angle.
3)Environmental random errors could be minimized by carrying out the experiment in a relatively good laboratory under fair weather conditions.
4)Observational random errors can be minimized by ensuring that the results from the readings are properly collated and the rightly interpolated as the case may be.
5)Environmental systematic errors can be minimized by ensuring stable power source to the instrument being used for the reading.
6)Theoretical systematic errors could be minimized by taking an average of at least 3 tests result to get a fair representation of the final result.
Find the value of the missing number
A standard Missouri state license plate consists of a sequence of two letters, one digit, one letter, and one digit. How many such license plates can be made
Answer:
The number of license plates that can be made is 1,757,600
Step-by-step explanation:
Here, we want to calculate the number of possible license plates
We do not have any restrictions here.
the number of digits is 0-9 making 10
Alphabets A-Z making 26
For two letters, one digit , one letter , one digit
1st letter
Number of choices is 26
second letter 26 too
1st digit 10 choices
third letter = 26 choices
last digit = 10 choices
Total number of choices will be;
26 * 26 * 10 * 26 * 10 = 1,757,600
Please help me figure this out
Answer:
Step-by-step explanation:
p-6=-14
p=-8
I need help pls.....
Answer:
Can you take a clear pic pls
Step-by-step explanation:
325 x 454 ≈ __________ x __________ = 150,000
can somone help me with this one
Answer: 300 x 500=150,000
Step-by-step explanation: Here, they're asking you to create a ballpark estimate by rounding. Since most people can't multiply 325 by 454 in their heads, it's more ideal to simply round to get an estimate first. Here, the numbers are rounded to the nearest hundred for a more friendly equation. The ≈ sign means approximately equals, or about, which indicates that your answer is close but not exact.
Hope this helps,
Lacia :)
What is the height of a solid cylinder with a mass of 26.05 g, a diameter of 3.56 cm, and a density of 2.72 g/cm^3?
Answer:
h = 0.962 cm
Step-by-step explanation:
Given that,
Mass of a solid cylinder, m = 26.05 g
The diameter of a cylinder, D = 3.56 cm
Radius, r = 1.78 cm
The density of a cylinder is 2.72 g/cm³
We need to find the height of the cylinder. Let it is h. We know that mass per unit volume is equal to density of an object. It can be given by :
[tex]d=\dfrac{m}{V}\\\\d=\dfrac{m}{\pi r^2 h}\\\\h=\dfrac{26.05}{\pi \times (1.78)^2\times 2.72}\\\\h=0.962\ cm[/tex]
So, the height of the cylinder is 0.962 cm.
I NEED THE ANSWER ASAP
tea drinkers in Canada is 4:1. Jack concluded from this that if 400 people
were surveyed, 100 of them would most likely be regular tea drinkers. Is
he correct? Explain.
Answer: He is incorrect.
Step-by-step explanation:
The question says:
"tea drinkers in Canada is 4:1"
We only have that, so i guess that this means:
"The ratio of nonregular tea drinkers to regular tea drinkers in Canada is 4:1"
The ratio 4:1 means that for each 4 non-regular tea drinkers, there is one regular tea drinker.
Now let's multiply both by 100.
For each 400 nonregular tea drinker, there are 100 regular tea drinkers, if we add them we have a total of 500
Then the statement would be if 500 people were surveyed, 100 of the would most likely be regular tea drinkers.
I do ivjwkebdoe skd d help
Solve for x/5 - g = a for x.
Answer:x=58/6^
Step-by-step explanation:
Three pounds of bananas cost $7. How many pounds of bananas per dollar is that?
Round your answer to the nearest hundredths place.
Answer:
0...
Step-by-step explanation:
e collect diswers.
Which statements are true about the function graphed here?
Answer:
Step-by-step explanation:
Just took the test I hope this helps a little
The y-intercept of line is at (0, -6) and the domain is (-∞, ∞). Then the correct options are A and D.
What is the linear system?A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
The graph of the line is shown below.
The line intersects the y-axis at (0, -6). Then the y-intercept of the line is (0, -6).
The domain of the linear function will be a real number.
And the range of the linear function is also real number.
Then the correct options are A and D.
The graph is given below.
More about the linear system link is given below.
https://brainly.com/question/20379472
#SPJ2