Answer:
I think it is A and C
A box is to be made where the material for the sides and the lid cost $0.20 per square foot and the cost for the bottom is $0.05 per square foot. Find the dimensions of a box with volume 20 cubic feet that has minimum cost.
Please answer in length , width and height in ft
Answer:
Let x represent the edge dimension of the square base in feet. Then the area of the base or lid is x², and the height of the box is 5/x². Total cost is then ...
... cost = cost of lid + 4×(cost of one side) + cost of bottom
... cost = 0.2x² + 4×(0.2x(5/x²)) + 0.5x²
... cost = 0.7x² + 4/x
We can differentiate this with respect to x and set that derivative to zero. This will give us the x-value at which the cost is a minimum.
... d(cost)/dx = 1.4x -4/x² = 0
... x³ = 4/1.4
... x = ∛(20/7) ≈ 1.419
Then the height of the box is
... height = 5/x² ≈ 5/2.01351 ≈ 2.483
The box is 1.491 ft square and 2.483 ft high.
______
The average cost of the top and bottom is (0.2 +0.5)/2 = 0.35 per square foot. The overall cost will be minimized when the average cost of each face is the same. That is, the areas of the lateral faces will be equal and must be 0.35/0.2 = 1.75 times the area of the top or bottom to make the average cost of a lateral face equal to that of the top or bottom. Hence, the base will be square, and the box will be 1.75 times as high as it is wide or deep. The base edge dimension is then ∛(5/1.75) ≈ 1.419 ft.
Step-by-step explanation:
hi pls help will give branliest to the first answer its a math question
Answer:
3x+6
Step-by-step explanation:
Okay so the reason behind this is the 3 x blocks then we have 6 one blocks which is how you would get answer.
The graph shows Marcia's walk. Which statement best describes what Marcia could be doing on the interval from B to C? A. Marcia is running home. B. Marcia is walking home. C. Marcia is turning a corner. D. Marcia is stopping to rest.
Answer:
B. Maria is walking home
Step-by-step explanation:
Sana nakatulong
If I play for 15 minutes and ate for an hour then go play for an hour then rested for 20 minutes then went and played for 5 hours then sit at a camp fire for 2 hours then took a hour shower then slept for 12 hours how long did i play?
Answer:
5 hours and 15 minutes
Step-by-step explanation:
Samantha is investing $7000 in a savings account that earns 4% simple annual interest. How much interest will she earn after 5 years?
A? B? C? Or D? Please help
Answer:
i believe it should be A
Step-by-step explanation:
Find the value of x and find whether the angles or supplementary or complementary.
Answer:
Both angles add up to 90° so they are complementary angles, x = 55
Step-by-step explanation:
=> We know that both angles add to 90°, so the equation will be;
(x - 20) + (x) = 90
=> Using algebra if solved all the way down, "x" will be 55.
Hope this helps!
ONLY ANSWER IF YOU KNOW THE ANSWER. Today only, a sofa is being sold at a 72% discount. The sale price is $151.20.
What was the price yesterday?
Answer:
42.336 or 42.34 if you round
Step-by-step explanation:
Answer:
270
Step-by-step explanation:
I hope this helps!
Let me know if I am wrong
a box contains 2 red marbles , 5 green marbles and 5 blue marbles. If we choose a marble, then another marble without putting the first one back in the box, what is the probability of the first one being green and the other one being blue
Answer:
41% & 45%
Step-by-step explanation:
A fraction consists of two numbers and a fraction bar:
41/45
The number above the bar is the numerator: 41
The number below the bar is the denominator: 45
Divide the numerator by the denominator to get fraction's value:
Val = 41 ÷ 45
8b+ 5 +3a
select all true statements
pls help due in 10 mins :'''( n pls no links
Answer:
the first one..... the second one.... and the fourth one :) im not really sure but this is NY closest to right.
What's the answer to this please help. :)
HELP IS NEEDED ASAP PLEASE!!!!!!! (I only need the m<3 part please!)
Harmonee walks 3/4 of a mile to the store. As she walks, she stops every 1/4 mile to take a sip from her water bottle. How many times does she stop?
please help me with this
what is x?
Answer:
27
Step-by-step explanation:
Solve: 2x + 3y+4
-7y=4x-8
Answer:
Step-by-step: 6+2y-=x 3+2x-=y
y
=
−
x
2
+
3
helppppppppppppppp plz
Answer:
B
Step-by-step explanation:
Kristi and Dan are training for an upcoming swim meet. The mean and the MAD below represent their practice time in seconds for the 50 meter free style race. Kristi's mean is 56 and MAD 3.25. Dan's mean is 53 and MAD 1. What does this information say about their practice time
a.Kisti's data varies more than Dan's
b.Dan's data varies more than Kristi's
c.Kristi practices longer than Dan
d.Dan practices longer than Kristi
Is the vertex of the graph a maximum or a minimum?
A. maximum
B. minimum
C. neither
D. both
1. In stanza 4 of “Every Time I Climb a Tree,” what is meant by “But still it’s pretty good for me”? (RL 2.4) A All the things the speaker sees are worth the scrapes and tears. B Every time the speaker climbs a tree, people ask where he has been. C The speaker scrapes his legs when he climbs trees. D When the speaker climbs trees, he sees ants and bees.2. What does the author of “Every Time I Climb a Tree” suggest about freedom? (RL 1.2) A Climbing trees is dangerous. B Taking risks to do something fun is liberating. C Listen to your parents and you won’t get hurt. D Unlike children, bees and ants are really free.
Answer:
are you sure this is math because it looks more like a english..
Step-by-step explanation:
Cog counted down from 2021 subtracting 7 repeatedly. How many positive multiples of three did he count?
Answer:
673.6? ur supposed to divide right?
Draw a line of fit using (15,25) and (5,35)
Answer:
your right
Step-by-step explanation:
you had it right nothing to do
Rita bakes cakes to earn money she spent $30 for supplies to make 15 cakes which inequality shows how much Rita has to change per cake to earn a profit of a least $150. show work ill mark brainliest
please help there both on probability using a spinner which is the spinner in the photos
The probability of the spinner landing on A is 3/8, the probability of the spinner not landing on C or E is 1/2
What is probability?It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.
1) What is the probability of the spinner landing on A:
Total outcomes = 8
Total favourable = 3 (A repeated 3 times)
Probability = 3/8
2) Do you have an equal chance of landing on either B or E:
No, because the probability for B is 1/8 and the probability for E is 3/8
3) What is the probability of the spinner not landing on C or E:
P(not landing on C or E) = 4/8 = 1/2
4) Do you have an equal chance of landing on either B or C:
Yes, because both event has same probability = 1/8
5) What is the probability of the spinner not landing on A or E:
P(not landing on A or E) = 2/8 = 1/4
6) What is the probability of the spinner landing on C or E:
P(landing on C or E) = 4/8 = 1/2
7) What is the probability of the spinner not landing on A or B:
P(not landing on A or B) = 4/8 = 1/2
Similarly, we can find the rest of the probability.
Thus, the probability of the spinner landing on A is 3/8, the probability of the spinner not landing on C or E is 1/2
Learn more about the probability here:
brainly.com/question/11234923
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HELP ME PLEASEeeeeee
Answer:
i would say 48
Step-by-step explanation:
Answer:
The answer is 16.
Step-by-step explanation:
Formula: B*h÷2
Base = 8
Height = 4
8*4 = 32
32÷2 = 16
plzzzzzzzzzzzzz help!!!
A sphere has a radius of 5 feet. Find the volume of the sphere. Leave your answer in terms of pie. Then use 3.14 for pie and round the volume to the nearest 10th. Volume in terms of pie=? Volume in using 3.14=?
The solution is, The Volume is 523.6, of the sphere has a radius of 5 feet.
What is volume?In mathematics, volume is the space taken by an object. Volume is a measure of three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.
here, we have,
Given,
r = 5 ft
pi = 3.14
Formula
the volume of sphere is:
V = 4/3 * 3.14 * r^3
Solution
V = 4/3 * 3.14 * 5^3
V = 4/3 * 3.14 * 125
V ≈ 523.59878
V ≈ 523.6 m^3
as, we get,
V≈523.59878
and 5 or more raise the score so the 9 makes the 5 into 6 and drop all of the other numbers.
Hence, The solution is, The Volume is 523.6, of the sphere has a radius of 5 feet.
To learn more on volume click :
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The graph shows Marcia's walk.
Which statement best describes what Marcia could be doing on the interval from B to C?
A. Marcia is running home.
B. Marcia is walking home.
C. Marcia is turning a corner.
D. Marcia is stopping to rest.
Answer:
D. Marcia is stopping to rest
Step-by-step explanation:
At intervals B to C, we can see that Marcia's distance from home has not risen nor dropped. We can safely assume that she is not moving. Of course, time has not stopped, because the line continues to move from left to right. So, Marcia is likely stopping to rest for a moment.
Have a nice day, fam. Spread The Love.
Answer and explanation?
Letter C, E, and F: 2 8/10, 2.8, and 28/10
Step-by-step explanation: The shaded pillars/rectangles inside the squares account for the fractions. In this question, there are 10 pillars per square and 2 shaded in squares. Since there are two full squares, there are two wholes. In the third block, there are only 8 shaded. Because 8 out of ten are shaded, the fraction would be 8/10 (said as eight tenths). Overall, there are two wholes (the shaded squares) and 8/10 of a whole. Therefore, it is 2 8/10. 0.8 equals 8/10 (you can determine it by the way it is said ex: you would say “zero and ...” (and = decimal) “... eight tenths” or just “eight tenths” for .8, and 8/10 is said the same way). Since 2.8 and 2 8/10 are equal, 2.8 would also be an answer. 28/10 would be another correct answer because the two wholes/squares each have 10 pillars. In total, there are 20 pillars for the two wholes. If the 8/10 (8 out of 10) is added, the total would be 28/10. Hope this helps!
I also need help on this question. Please help me. (x+15) + (x+5) + (x+15) + (x+5)
Answer: 4x+40
Step-by-step explanation:
(x+15)+(x+5)+(x+15)+(x+5)
=x+x+x+x+15+15+5+5
=4x+15+15+5+5
=4x+40
Rectangle ABCD was dilated to create rectangle A’B’C’D’. The area of rectangle ABCD is 16 in and the area of the rectangle A’B’C’D’ is 64 in. Which scale factor was used to dilate the rectangle?
A.2
B.4
C.8
D.16