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2 years ago

The value of y varies directly with x. When y = 75, x = 1/2 What is the value of y when x = 18?

Mathematics

1 answer:

kondaur [170]2 years ago

3 0

Answer: 2700

Step-by-step explanation:

Y = KX

75 = K × ½

75 ÷ ½ = K

75/1 × 2/1 = K

K is 150

Y = 150 × 18

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8) The perimeter of a rectangle is 20x2 + xy - 7y2 and one of it's sides is

Sedbober [7]

Answer:

3x^2 + 3xy/2 - 7xy^2/2

Step-by-step explanation:

So we know the perimeter is 20x^2 + xy - 7y^2,

To find any perimeter you need 2l + 2w = P so,

One of the sides is 7x^2 - xy

First plug in the values,

2(7x^2-xy) + 2w = 20x^2 + xy - 7y^2

Multiply,

14x^2-2xy + 2w = 20x^2 + xy - 7y^2

Subtract,

14x^2 - 2xy - 14x^2 + 2xy + 2w = 20x^2 + xy - 7y^2 - 14x^2 + 2xy

2w = 6x^2 + 3xy - 7y^2

w = 3x^2 + 3xy/2 - 7xy^2/2

5 0

3 years ago

Farmer Kipp sold 25 horses for a total of $7500 in January and 25 horses for a total of $10500 in February. What is the average

insens350 [35]

Answer:

So Average Price of horse is $360

Step-by-step explanation:

Given:

25 horses sold in January for $ 2500

25 horses sold in February for $10500

TO find:

Average price of horse = ?

Solution:

Average price is usually found out by adding all the values and dividing by its total no of values

Now in our case

Total Horse = 25 + 25

= 50

Total Money = $7500 + $10500

= $18000

Average Price $=\frac{total price}{total horses}$

Average Price $=\frac{18000}{50}$

=$360

So Average Price of horse is $360

3 0

3 years ago

What is the fifth term in the sequence defined by f(n)=3(n-3)

Sholpan [36]

The answer is n= 3.

Hope this helps.

8 0

3 years ago

Read 2 more answers

Will mark brainliest

katen-ka-za [31]

Answer:

Step-by-step explanation:

3 0

3 years ago

3,842.58 rounded to the nearest tenth

Nataliya [291]

The tenths place is where the 5 is
To round, look at the number before it which is a 8
Since 8 is above 5 you round up
So the answer is 3,842.6

8 0

3 years ago