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I will mark brainliest if its correct!
Don't answer if you don't know!
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And show your work plz!

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:

Answer:

D

Step-by-step explanation:

A: (2 × 3) + (-2 × 3)= 0

(-2 × 2) + (3 × 3) = 5

B:(2 ÷ 3) ÷ (3 ÷ -2) = -0.44444444444

(-2 ÷ 2) ÷ (3 ÷ 3)= -1

C:(-2 - 3) - (3 - 2)=-6

(-2 - 2) - (3 - 3)=-4

D:(-2 × 3) × (2 × 3)=-36

( 3 × 2) × (3 × -2 )-36

Can i get brainliest?

Answer:

19. ps thanks ;)

Step-by-step explanation:

Answer:21

Step-by-step explanation:

9+10=19

Answer:

the Answer is

Step-by-step explanation:

Yes. To meet the​ recommendation, the ramp needs to have a horizontal distance of at least 16 feet. The ramp has a horizontal distance of 17.9 feet.

(those were my answers i dont know if its going to be the same but i hope this helps) have a nice day

Answer:

Step-by-step explanation:

225

Answer: I'm sorry but your question does not state how much it was on sale for.

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

75+8n

Step-by-step explanation:

$75 is the constant because that is the amount of money only paid once. $8 is the coefficient because it is multipled by the variable n. The variable is the amount of people going to the bowling alley.

Therefore, to determine the total cost, you need add $75 to the product of 8 and the number of people coming.

Answer:

angle RUS = 65 degrees

angle STU = 90 degrees

Step-by-step explanation:

(a) find angle RUS

Given arc RU = 50 degrees, so angle RSU = 50/2 = 25 degrees

Since US is the diameter,

angle URS is a right-angle.

Consider triangle RUS,

sum of angles of a triangle = 25+90+RUS = 180  

solve for

RUS = 180 - 25 - 90 = 65 degrees.

(b) Find STU

All diameters span a right angle at the circumference,

since we're given US is a diameter, this means that

angle STU is a right angle.

The measure of the ∠RUS is 65°, while the measure of ∠UST is 15°.

The angle ABC is a right angle if A, B, and C are different points on a circle where the line AC is a diameter, according to Thales' theorem.

We know that when an angle is made by the diameter of a circle at its circumference, then the measure of that angle is 90°.

In ΔUST,

The angle made by the diameter is ∠UST, therefore, the measure of this angle will be 90°. Since the measure of the arcRU=50°, therefore,

arcRU = ∠ROU = 50°, Also,

[tex]\angle RSU=\dfrac{\angle ROU}2 =\dfrac{50^o}2 = 25^o[/tex]

Now, the sum of the angles of a triangle is 180°.

∠R+∠U+∠S=180°

90°+∠RUS+25°=180°

∠RUS = 65°

In ΔRUS,

The angle made by the diameter is ∠URS, therefore, the measure of this angle will be 90°. Since the measure of the arcUT=30°, therefore,

arcUT = ∠UOT = 30°, Also,

[tex]\angle UST=\dfrac{\angle UOT}2 =\dfrac{30^o}2 = 15^o[/tex]

Thus, the measure of the ∠RUS is 65°, while the measure of ∠UST is 15°.

Learn more about Thale's Theorem:

https://brainly.com/question/14417137

Answer:

20

Step-by-step explanation:

5 10 15 20

Answer:

C

Step-by-step explanation:

Answer: $2.30

Step-by-step explanation:

Because if we do $27.60 divided by 12 we get 2.3 which then means 1 book cost $2.30

HOPE THIS HELPS ^^

Answer:

2.3

Step-by-step explanation:

27.6/12

Answer:

The number covered by the car is 87.

Step-by-step explanation:

All you have to do is turn the picture upside down, revealing a bunch of numbers in a row.

Answer:

87 but since its upside down L8

Step-by-step explanation:

The answer is L8. All of the numbers, when read upside down, are the number 86 - 91

So basically 87 but upside down it would be L8.

Answer:

triangle side = 0.54

so both triangle sides = 1.08

and then the sides (1.5 * 3.5) * 2 = 10.5

the last side = 0.9 * 3.5 = 3.15

so add it all  3.15 + 10.5 +  1.08

total area = 14.73 m^2

Answer:

as angle RST , 90 - 27

angle UST 63 degree

option c

pls Mark as brainliest

Answer:

An inequality you can use is 3x + 28 > 200.

Answer:

The volume of this shape is 41 inches sq. :)

Step-by-step explanation:

7 x 3 = 21

2 x 2 = 4/2 = 2

2 x 2 = 4/2 = 2

2 x 2 = 4/2 = 2

2 x 2 = 4/2 = 2

2 x 3 = 6

2 x 3 = 6

21 + 2 + 2 + 2 + 2 + 6 + 6 = 41

Answer:

Step-by-step explanation:

Answer:

Evidentially, make the photo smaller.

Step-by-step explanation:

It's because dividing 7/8 makes it a smaller number, which will obviously make the photograph smaller.

[tex]\frac{7}{8}[/tex] = 0.875

≈ 0.89

Answer:

Ponte las pilas stop being lazy and do your work

Step-by-step explanation:

Answer:

I think its F

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

1

Answer:

134F>15F and 15F< 134F

Step-by-step explanation:

if you flip the first one then you have the second

Answer:

m is greater than or equal to twelve

Answer:

The length of the copy of the dollar bill is 4.88 inches in length and 2.08 inches in width.

Step-by-step explanation:

If Dani wants to make a smaller copy of a dollar bill and reduce its size to 80%, you will need to multiply the dollar bills original length by 8%.

80% = 0.8

0.8 x 6.1 = 4.88

80% = 0.8

0.8 x 2.6 = 2.08

Answer:

A

Step-by-step explanation:

Step-by-step explanation:

Answer-1 Range= Highest value - Lowest value

So,

85-79=6 is the range of data.

Answer-2 These four numbers are above 81 those are 82,83,84,85

So boys above 81 = 9

Answer-3. 4 were having pulse rate 83.

Answer:

The answer is Graph F

Graph F is the answer because it says that every hour Juana spends reading books, she reads 0.25 hours reading magazines. This means that in 2 hours she's spent 0.5 hours reading magazines, and the data points continue in that order.

Answer:

f

Step-by-step 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!