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tatuchka [14]
3 years ago
5

Solve for AB. Round your answer to the nearest tenth if necessary.

Mathematics
1 answer:
11111nata11111 [884]3 years ago
6 0

Answer:

AB = 55.25

Step-by-step explanation:

Set up an equation where the length of AB is equal to AC minus BC. This will allow us to solve for x, and then the length of AB.

AB = AC - BC

5x + 9 = 87 - (3x + 4)

5x + 9 = 87 - 3x - 4

5x + 9 = 83 - 3x

8x + 9 = 83

8x = 74

x = 9.25

Now plug  9.25 in for x in the equation for AB

AB = 5x + 9

AB = 5(9.25) + 9

AB = 46.25 + 9

AB = 55.25

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A food company originally sells cereal in boxes with dimensions 25 cm by 14 cm by 10 cm. To make more profit, the company decrea
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Answer:

1.75 cm

Step-by-step explanation:

We are given that the dimensions of the box as 25 cm by 14 cm by 10 cm.

Now, to increase the profit, the dimensions of the box by 'x' cm.

Thus, the new dimensions are (25-x) cm by (14-x) cm by (10-x) cm.

Further, it is given that the volume of the new box is 2,208 cm^{3}

As, Volume of the box = Length × Breadth × Height

i.e. 2208 = (25-x) × (14-x) × (10-x)

i.e. 2208 = (25-x) \times (140-24x-x^{2})

i.e. 2208=x^{3}-x^{2}-740x+3500

i.e. x^{3}-x^{2}-740x+1292=0

On solving this cubic equations, we get that, the solutions are x = 27.6, x = 1.75 and x = 26.8.

Since, the dimensions 25 cm by 14 cm by 10 cm are reduced by x cm.

Thus, if x = 27.6 or x = 26.8, then (10-x) = -17.6 or -16.8, which cannot be possible. So, x = 1.75 cm.

Hence, the dimensions were decreased by 1.75 cm.

3 0
3 years ago
James has saved $24.60. Dillon saved 2/3 of the amount that James saved. Mara saved 2 times as much as Dillon. What is the total
AlekseyPX

Answer: 73.8

Step-by-step explanation: Hope this helps

6 0
3 years ago
Read 2 more answers
Is 5/6 greater than 1/2
Alinara [238K]
Yes it is. We know this cause 1 is smaller than 5 and 6 is bigger than 2. 

Hope This Helps!





7 0
3 years ago
Convert 30° 40' to sexagesimal seconds. ​
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Step-by-step explanation:

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3 10 =30 2 10 + 10=30 so i think its ten they both equal 30

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