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serg [7]
2 years ago
11

LOOK FOR THE BEST THING EVER

Mathematics
1 answer:
Pie2 years ago
4 0

Answer:

look at this

Step-by-step explanation:

You might be interested in
Suppose that you are to make a rectangular box with a square base from two different materials. The material for the top and fou
saw5 [17]

Answer:

height = 14.5 ft

width = length = 3.2 ft

Step-by-step explanation:

Let the side of the square base is a and the height of the box is h.

The material required to make the box is equal to the total surface area of the box.

Area of base = a²

Cost of square base is $ 2 per ft²

So, the cost of making base = 2a²

Area of four walls + area of top = 2 (a² + ah + ah) + a² =  3a² + 2ah

Cost of making walls and the top is $ 1 per ft²

So, the cost of making walls and the top = 1 x ( 3a² + 2ah)

Total cost of making the box = 2a² + 3a² + 2ah = 5a² + 2ah

According to the question

144 = 5a² + 2ah

h = \frac{144-5a^{2}}{2a}     .... (1)

The volume of the box is V = length x width x height

V = a x a x h

V = 72 a - 2.5 a³     from equation (1)

Differentiate both sides with respect to a.

dV/da = 72 - 7.5 a²

Put, it equal to zero for maxima and minima

7.5 a² = 72

a = 3.2 ft

Put in equation (1)

h = \frac{144-5\times 3.2\times 3.2}{2\times 3.2}

h = 14.5 ft

So, the dimensions of the box are

height = 14.5 ft

width = length = 3.2 ft

6 0
3 years ago
Explain how finding 4 times 384 can help you find 4 times 5384.then find both products
forsale [732]

Answer:

Given the following: 4 times 384 can help you find 4 times 5384.

4 \times 384 = 1536                

Now, find 4 \times 5384

Using Distributive property: a\cdot (b+c) = a\cdot b + a\cdot c

We can write 4 \times 5384 as

4 \times (5000+384)

Apply distributive property we have;

4 \times 5000 + 4\times 384

Now, find both products;

we know:  4 \times 384 = 1536            

20000 + 1536 = 21,536


8 0
3 years ago
I have the first part down, but I don't understand how to solve. It's an inequality.
Anna71 [15]

Answer:

As shown in your game, you have an inequality:

    2.5 x h + 10.9 > 33.4

=> 2.5 x h > 33.4 - 10.9

=> 2.5 x h > 22.5

=>  h > 22.5/2.5

=>  h > 9

Hope this helps!

:)

8 0
3 years ago
3x plus 3 minus x plus -7 greater than 6
lubasha [3.4K]
I hope this helps you

8 0
3 years ago
Work out the perimeter​
Tasya [4]

Answer:

46CM

Step-by-step explanation:

Perimeter = S + S + S + S + S + S + S +S

Perimeter = 9 + 7 + 8 + 5 + 5 + 8 + 2 + 2

Perimeter = 46 cm

The other 4 measurements:

5 is from the other side labelled 5 this is because they are equal.

8 is from the other side labelled 8 this is because they are equal too!

The twos are from the difference between 9 and 7.

HOPE THIS HELPED

6 0
3 years ago
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