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maxonik [38]
3 years ago
13

A loaf of bread costs the same as 3 apples. i bought 3 loaves and 5 apples for £5.60. how much does each item cost

Mathematics
1 answer:
marta [7]3 years ago
8 0
1 loaf of bread = 3 apples
3 loaves of bread = 3 x 3 = 9 apples

3 loaves + 5 apples = £5.60
9 apples + 5 apples = 5.60
14 apples = 5.60
1 apple = £0.40

1 loaf of bread = 3 apples
1 loaf of bread = 3 (0.4)
1 loaf of bred = £1.20

Answer: A loaf of bread costs £1.20 and an apple costs £0.40.

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A designer is making a rectangular prism box with maximum volume, with the sum of its length, width, and height 8 in. The length
Sever21 [200]

Answer:

width = 1.8 in

length =   3.6 in

height =8-3w =8-3(1.8)= 2.6 in

Step-by-step explanation:

A designer is making a rectangular prism box with maximum volume, with the sum of its length, width, and height 8 in

Let l , w and h are the length , width and height

l +w+h=8\\l=2w

Plug it in the first equation

2w+w+h=8\\3w+h=8\\h=8-3w

volume the box is length times width times height

volume = (2w)(w)(8-3w)\\16w^2-6w^3

To get maximum volume we take derivatived

v'=32w-18w^2

set the derivative =0 and solve for w

0=32w-18w^2\\0=-2w(9w-16)\\w=0 , w= \frac{16}{9}

width = 1.8 in

length = 2w= 3.6 in

height =8-3w =8-3(1.8)= 2.6 in

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3 years ago
Consider a cylinder with a radius of 6 ft and height of 11.5
maria [59]
The formula for a cylinder V= pi r squared times the height. I should suppose you were told to abbreviate pi to 3.14. First do 6 to the power of 2 which is 36 then multiply it by 3.14 witch would be 113.04. Then multiply that by 11.5 which would be 1299.96

The answer is 1299.96
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2 years ago
Please explain and I also need the answer ASAP... I need help with all of them haha...
Umnica [9.8K]

Answer:

I don't know how to help either I need the same answers as you pls

4 0
3 years ago
If f(x)=x²+3x+5, what is f(3+h)?
Simora [160]
You have to substitute 3+h for x, then work out the equation.

(3+h)^2 + 3(3+h) + 5 = 9 + 6h + h^2 + 9 + 3h + 5 =

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Answer B.
8 0
3 years ago
I NEED HELP PLEASE !!!!!
erastovalidia [21]

Answer:

c= (f-d)/ab

Step-by-step explanation:

  1. abc+d = f
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  3. Divide by ab from both sides so c = (f-d)/ab
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3 years ago
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