Answer:
C) 1050π cm²
Step-by-step explanation:
Surface area of a cylinder = 2πrh + 2πr²
radius, r = 3.5cm
Height, h = 4 cm
Surface area of a cylinder = 2πrh + 2πr²
= 2 * π * 3.5 * 4 + 2 * π * 3.5²
= 28π + 2π * 12.25
= 28π + 24.5π
= 52.5π cm²
Surface area of a cylinder = 52.5π cm
There are 20 bars of soap
Total plastic Emily needs for 20 bars of soap = surface area of each soap × 20
= 52.5π cm² × 20
= 1,050π cm²
hii i’ll give brainliest please help thanks :)
Answer:
The correct answer is c
Step-by-step explanation:
because I studied the histogram very closely.
Hope this helps mark me as Brainliest please it would really make my day
Answer:
Third one
Step-by-step explanation:
as you can tell by the graph,
less than 6 dogs weighed 18-19 pounds
but some dogs did weigh 14-15 pounds
but most of the dogs didn’t weigh 18-19, but instead 16-17
but the only correct one is that 4 dogs weighed 18-19 pounds
The function (t) = 1,000(1.06)2t models the value of an investment after tyears.
Part B: What does the coefficient"2" represent in the exponent of the function?
the total amount of money earned in the investment
the initial amount of money invested
the number of compounding periods per year
the interest rate of the investment
Answer: B not sure if I’m right though .
Step-by-step explanation:
I need to find the area of this whole shape. plz someone help me.
Answer:
the answer would be 105!!
Step-by-step explanation:
5×3=15
15×7=105 aka our answer
The average of the first 3 numbers was 28. The average of the next 12 numbers was 38. What was the overall average of the numbers?
***NO SPAM, PLEASE!!!!!!***
Answer:
ther overall average would be 36
Step-by-step explanation:
Help please find the circumference of the circle
Answer:
10 i believe
Step-by-step explanation:
Answer:
C = 5pi inches or approximately 15.7 inches
Step-by-step explanation:
The circumference of a circle is given by
C = pi *d
The diameter is given by d=5
C = pi *5
If we use pi is approximated by 3.14
C = 3.14 *5 =15.7
C = 5pi inches or approximately 15.7 inches
What number can 330 and 180 both be divided by?? Plz help
Answer:
330 and 180 have 8 common factors (divisors):
1; 2; 3; 5; 6; 10; 15 and 30
out of which 3 prime factors: 2; 3 and 5
Step-by-step explanation:
In a game show, a contestant receives a prize that has a % chance of being worth $ and a % chance of being worth $. What is the expected value of winning a prize?
Answer:
112
Step-by-step explanation:
Expected Value is anticipated value, calculated by multiplying each of possible outcomes with their probability of occurrence.
If Price has = 60% chance of value 120 , & 40% chance of value 100
Expected Value = Sum ( Probability of outcome x Payoff )
E (X) = Σ [ xi . PR ( xi ) ] = x1. Pr (x1) + x2 . Pr (x2)
= 0.6 (120) + 0.4 (100) = 72 + 40
= 112
What is the circumference of a circle with a diameter of 5 feet use 3.14 for pi
Answer:
15.7
Step-by-step explanation:
Circumference= πd
d= Diameter
1. State 5 fractions between 6 and 7
Answer:
6 1/2
6 9/10
6 8/9
6 1/3
6 3/4
Which pair of angles must be supplementary?
A. <1 and <5
B. <5 and <3
C. <4 and <5
D. <4 and <1
Answer:
I think C but I could be wrong
Step-by-step explanation:
Solve The Porportion
Answer:
10*3=5(x-4)(doing cross multiplication)
30=5x-20
30-20=5x
10/5=x
2=x
Step-by-step explanation:
Answer:
x=10 so the proportion is 3/6 =5/10
Step-by-step explanation:
5(x-4) = 3*10, cross multiply
5x -20 =30, distribute in parenthesis
5x = 30 +20, add 20 on both sides
5x=50, combine like terms
x= 10, divide both sides by 5
6) 60% of an audience at a theatre production are over the age of 60. Write down the
ratio of people under the age of 60 to the people over the age of 60. Write your
answer in the form 1: n
Answer:
60%
=60/100
=6/10
=3/5
=3:5
Angle relationships with Parallel lines
Answer:
Alternate exterior angles
Step-by-step explanation:
Urgent help needed, thanks!
Answer:
2/5 is the rest of the shirts
Step-by-step explanation:
Which measure describes the standard error of the mean? A. the central limit theorem B. the sample mean C. the confidence interval D. the standard deviation of the means
Answer:
Correct answer: (Standard Deviation of means)
Step-by-step explanation:
#platolivesmatter
Hoped this helped! XD
The standard deviation of the means measure describes the standard error of the mean
Statistic is the study of mathematics that deal with relations between comprehensive data.
A standard deviation (or σ) is a measurement of how spread the information is in relation to the mean. A lower standard deviation means data are bunched around the mean, and a high standard deviation implies data are more scattered out, and best describes the error related to or around the mean.
From the above definition it is clear that standard deviation of the means measure describes the standard error of the mean.
Thus, the standard deviation of the means measure describes the standard error of the mean
.
Learn more about Statistics here:
https://brainly.com/question/23091366
#SPJ2
Which measure describes the standard error of the mean to be determined from the option given below.
A. the central limit theorem B. the sample mean C. the confidence interval D. the standard deviation of the means
THIS IS FOR TODAY PLEASE HELP!!
Answer:
[tex]\sqrt{209}[/tex]
Step-by-step explanation:
[tex]\sqrt{15^{2} -4^{2} } =\sqrt{209}[/tex]
Can someone help me out my grads are bad
Answer:
shen's new area will be 1200 ft ^ 2
It will be 2 times the original
Donna should increase the length by 5 times
Step-by-step explanation:
Original length = 40
New length = 30 x 4 = 120
Original width = 20
New width = 20 x 5 = 100
120 x 100 = 12000 ft^2
12000/600 = 20
It will be 20 times larger
For Donna:
ex:
length = 1
width = 2
Area = 2
He wants it to be 15 times 2
Lisa says increase 4 times
2 x 3 = 6
30/6 = 5
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Answer:
a) 120 ft x 100 ft = 12000 [tex]ft^{2}[/tex]
b) 20 times
c) 5 times
Step-by-step explanation:
a) 30x4 = 120
20x5 = 100
120x100 = 12000
b) 12000/600 = 20
c) 15/3 = 5
The measure of L in triangle LMN is 36°. The measure of M is 75°. What is the measure of N?
A.
111°
B.
39°
C.
69°
D.
249°
Answer:
C. 69°
Step-by-step explanation:
The sum of interior angles in a triangle is equal to 180
two of the angles are given to find the third one we subtract their sum from 180
180 - (36+75) = 69 degrees
The approximate molar concentration of several chemicals are given. Find the pH of each use the calculator and round to the nearest 10th if necessary. Here is the photo of the question
Answer:
[tex]pH = 13[/tex] --- Oven Cleaner
[tex]pH = 6.2[/tex] --- Water
[tex]pH =7.4[/tex] --- Blood
[tex]pH = 2.2[/tex] --- Vinegar
Step-by-step explanation:
The given molar concentration are:[Missing from the question]
Oven Cleaner: [h+] = [tex]10^{-13}[/tex]
Water: [h+] = [tex]0.0000007[/tex]
Blood: [h+] = [tex]0.00000004[/tex]
Vinegar: [h+] = [tex]0.0063[/tex]
Required
Determine the pH
pH is calculated using:
[tex]pH = -\log(h+)[/tex]
So, we have:
Oven Cleaner:
[tex]pH = -\log(10^{-13})[/tex]
Using a calculator, we have:
[tex]pH = 13[/tex]
Water:
[tex]pH = -\log(0.0000007)[/tex]
Using a calculator, we have:
[tex]pH = -1*-6.2[/tex]
[tex]pH = 6.2[/tex]
Blood:
[tex]pH = -\log(0.00000004)[/tex]
Using a calculator, we have:
[tex]pH = -1 * -7.4[/tex]
[tex]pH =7.4[/tex]
Vinegar:
[tex]pH = -\log(0.0063 )[/tex]
Using a calculator, we have:
[tex]pH = -1 * -2.2[/tex]
[tex]pH = 2.2[/tex]
Which of the following is equivalent to the
given expression? *
(1 + sin a/1 - sin a) - (1 – sin a/1 + sin a)
Answer:
Solution given:
[tex] \frac{1 + \sin( \alpha ) }{1 - \sin( \alpha ) } - \frac{1 - \sin( \alpha ) }{1 + \sin( \alpha ) } [/tex]
[tex] \frac{(1 + \sin( \alpha )) {}^{2} - (1 - \sin( \alpha ) {}^{2} }{1 - \sin{}^{2} \alpha }[/tex]
[tex] \frac{1 + 2 \sin( \alpha ) + \sin {}^{2} ( \alpha ) - 1 + 2 \sin( \alpha ) - \sin {}^{2} ( \alpha ) }{ { \cos }^{2} \alpha } [/tex]
[tex] \frac{4 \sin( \alpha ) }{ \cos {}^{2}( \alpha ) } [/tex]
[tex]4 \tan( \alpha ) \sec( \alpha ) [/tex]
is your answer.
Greg has a piece of wire that is 72 inches in length. If 12 inches equals 1 foot, what is the length of wire in feet?
A. 84 feet
B. 60 feet
C. 6 feet
D. 864 feet
Answer:
72 divided by 12 = 6 feet
Step-by-step explanation:
Since there are 12 inches in ONE FOOT you have to divide the total number of inches by the inches that are in a foot which is 12.
A circle is graphed on this coordinate plane. What is the radius in units of the circle and what is the equation of the circle?
Answer:
The radius is 4 units, and the equation of the circle is:
(x - 3)^2 + (y + 5)^2 = 16
Step-by-step explanation:
A circle centered at the point (a, b) and with a radius R, is written as:
(x - a)^2 + (y - b)^2 = R^2
In the image, we can see that a segment that cuts the circle in two halves is the segment between the points:
(-1, -5) and (7, - 5)
The distance between these points is the diameter of the circle.
Remember that the distance between two points (x₁, y₁) and (x₂, y₂) is:
D = √( (x₂ - x₁)^2 + (y₂ - y₁)^2)
Then in this case, the distance between the known points is:
D = √( (7 - (-1))^2 + (-5 - (-5))^2)
D = √( 8^2) = 8
The diameter of the circle is 8
Then the radius is:
R = 8/2 = 4
the radius is 4.
Now, to find the center of the circle we just need to go to any of the two extremes of the interval and count 4 units towards the center of the circle, this is:
(-1 + 4, -5) = (3, -5)
or
(7 - 4, -5) = (3, -5)
Then the center of the circle is the point (3, -5) and the radius is R = 4
The equation of the circle is:
(x - 3)^2 + (y - (-5))^2 = 4^2
(x - 3)^2 + (y + 5)^2 = 16
A can of nuts weighs 1 pound, 1 ounce. The empty can weighs 3 ounces. If you pour out half the nuts into a bowl, how many ounces of nuts are in the bowl?
Answer:
7 ounces
Step-by-step explanation:
There are 16 ounces in one pound, so there are 17 ounces for the can of nuts.
Since the empty can weighs 3 ounces, you can subtract 17-3, which equals 14, to get the weight of the nuts alone.
Then, you divide 14 by 2, and you get 7.
Simplify the fractions 81/126=
Answer:
9/14
Step-by-step explanation:
81/126=9x9/9x14=9/14
Answer:
9/14
Step-by-step explanation:
I divided both the numerator and denominator by 9 and 9/14 is the "most simplified" it can go to, unless I'm incorrect. Hope this helped ^-^
What is 1+1 my dad hasn’t got the milk yet and it’s been 20 years since I’ve been to school I’m a fetus and I ended up walking my fish to the park so he could walk.
Answer:
its 32, and the world is a fetus now too
Step-by-step explanation:
Answer:
1+1=2
Step-by-step explanation:
LOL this question was all over the place but so funny!!
Help me please I can’t do this anymore it’s so hard
Answer:
2
Step-by-step explanation:
Don't really know how to explain it. OmniCalculator is very helpful.
Hope that this helps!
Please help. It's a question on Khan Academy. DON'T SPAM.
Juana is measuring two pyramids whose bases are isosceles right triangles.
Given the height hhh and the volume VVV of the first pyramid, Juana uses the formula
a=\sqrt{\dfrac{6V}{h}}a=
h
6V
a, equals, square root of, start fraction, 6, V, divided by, h, end fraction, end square root
to compute its base's side length aaa to be 111 meter.
The second pyramid has the same height, but has 999 times the volume. What is the side length of its base?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
\sqrt6
6
square root of, 6, end square root meters
(Choice B)
B
333 meters
(Choice C)
C
3\cdot\sqrt63⋅
6
3, dot, square root of, 6, end square root meters
(Choice D)
D
999 meters
Answer:
3 meters
Step-by-step explanation:
Answer:
Choice B
3 meters
Step-by-step explanation:
I just did it on Khan Academy
As an apprentice working for 1 plus 1 Landscaping, you’re learning the tricks of the trade. Your boss wants you to calculate the area between the edge of a garden bed and the side of a house. Using the area, she can calculate the amount of mulch she will need for this job. The edge is defined by the equation y = x + 1.
Answer:
This needs more information for it to be solved.
Step-by-step explanation:
Are there answer choices?
or a chart with specific information of the appropriate measurements that can be put into the equation to solve it?
I wish i could give you a proper answer, but without the numbers I can't answer this for you. I'm sorry.
Answer:
There are no numbers
Step-by-step explanation:
Your class is planning a trip to Science East . The school will have to pay $250 for the bus and $3per student.Write an equation to represent the total cost .
Answer: 250+3x
Step-by-step explanation: 250 for the bus and the students is $3 each so the students could be x.
Diego’s family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5 gallons or less.
b. Starting from a full tank, can Diego’s family drive the car for 25 days without the warning light coming on?
Explain your answer.
Answer: no
Step-by-step explanation:
if diego car can hold 14 gallons and eveery day they use 0.6 0.6x25 is 15 which means that they can drive 15 days in all so 15-1.5 13.5 so they can only drive for 13.5 days
hope this helps :)
Answer:
No, Diego's family cannot drive the car for 25 days without the warning light coming on.
Step-by-step explanation:
Find how much fuel they will use in 25 days by multiplying 25 by 0.6, since the car uses 0.6 gallons each day:
25(0.6)
= 15
Subtract this from 14 to see how much fuel will remain, starting from a full tank:
14 - 15
= -1
The number is negative, meaning that driving the car for 25 days will use up all of the fuel. So, the warning light will come on.
No, Diego's family cannot drive the car for 25 days without the warning light coming on.
