All categories

2 years ago

Find x and y with steps

Mathematics

1 answer:

LuckyWell [14K]2 years ago

7 0

Answer:

x=15, y=12

Step-by-step explanation:

Please see the attached pictures for full solution.

You might be interested in

Help need answer ASAP due in 10 minutes

enyata [817]

Answer:

1) about 9 or 8.7

2) 4

3) about 5 or 4.5

4) 2

5) about 4 or 4.4

6) 2

4 0

3 years ago

Find the dimensions of an open rectangular box with a square base that holds 2000 cubic cm and is constructed with the least bui

Vesnalui [34]

<h3>The dimensions of the given rectangular box are:</h3><h3>L = 15.874 cm , B = 15.874 cm , H = 7.8937 cm</h3>

Step-by-step explanation:

Let us assume that the dimension of the square base = S x S

Let us assume the height of the rectangular base = H

So, the total area of the open rectangular box

= Area of the base + 4 x ( Area of the adjacent faces)

= S x S + 4 ( S x H) = S² + 4 SH ..... (1)

Also, Area of the box = S x S x H = S²H

⇒ S²H = 2000

$\implies H = \frac{2000}{S^2}$

Substituting the value of H in (1), we get:

$A = S^2 + 4 SH = S^2 + 4 S(\frac{2000}{S^2}) = S^2 + (\frac{8000}{S})\\\implies A = S^2 + (\frac{8000}{S})$

Now, to minimize the area put :

$(\frac{dA}{dS} ) = 0 \implies 2S - \frac{8000}{S^2} = 0\\\implies S^3 = 4000\\\implies S = 15.874 \approx 16 cm$

Putting the value of S = 15.874 cm in the value of H , we get:

$\implies H = \frac{2000}{S^2} = \frac{2000}{(15.874)^2} = 7.8937 cm$

Hence, the dimensions of the given rectangular box are:

L = 15.874 cm

B = 15.874 cm

H = 7.8937 cm

3 0

3 years ago

Alan removed fish from his pond each day for days. What was the total change in the number of fish in the pond?

BigorU [14]

Answer:

Step-by-step explanation:

um need more info

7 0

2 years ago

Read 2 more answers

Pls help will mark brainliest

nevsk [136]

Answer: The constant proportionality is 5/4

Step-by-step explanation: The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other. Once you know the constant of proportionality you can find an equation representing the directly proportional relationship between x and y, namely y=kx, with your specific k.

3 0

3 years ago

Read 2 more answers

A satrellite moves at a speed of 27,000 kilometers per hour. Write four numbers that could be the actual speed of the satellite?

Maurinko [17]

Some satellites are up to 13,482,567 or 30,098,766 or 80,453,872 or even 900,435,879

8 0

2 years ago