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3 years ago

A carpenter lays 15 square feet of tile in 1/3 of an hour. How many square feet does the carpenter may per hour?

Mathematics

1 answer:

taurus [48]3 years ago

5 0

Answer:

x=24 square feet per hour

Step-by-step explanation:

You divide 16 by 2 to get how many tiles that are laid in 1/3 of an hour. Then multiply that by 3 to get how many tiles in one whole hour. The answer should be 24.

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Which expression represents the phrase "twice the difference of a number and 5"?

KatRina [158]

The expression that represents the phrase "twice the difference of a number and 5" is 2(x - 5).

<h3>What is the expression that represents the phrase?</h3>

The difference of a number and 5 is given by:

x - 5.

As we don't know the number, hence we call it x.

Twice that is:

2(x - 5).

Hence the expression that represents the phrase "twice the difference of a number and 5" is 2(x - 5).

A similar problem, in which the expression that represents a phrase is found, is given at brainly.com/question/2164351

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5 0

1 year ago

We are going to fence in a rectangular field that encloses 75 ft2. Determine the dimensions of the field that will require the l

pychu [463]

Answer:

For width W and length L, we have:

W = L = √(75ft^2) = 8.66ft

Step-by-step explanation:

For a rectangle of length L and width W, the area is:

A = L*W

and the perimeter is:

P = 2*L + 2*W

First, we know that the area of our rectangle is:

A = 75ft^2 = L*W

And we want to minimize the perimeter of our rectangle, then we need to minimize:

P = 2*L + 2*W

From the equation:

75ft^2 = L*W

We can isolate one of the variables, let's isolate L

L = (75ft^2)/W

We could replace this in the perimeter equation:

P(W) = 2*( (75ft^2)/W) + 2*W

P(W) = (150 ft^2)/W + 2*W

To find the minimum of the perimeter we need to look at the zero of the first derivative of P(W).

P'(W) = dP(W)/dW = -(150ft^2)/W^2 + 2

Now we need to find the value of W such that:

P'(W) = 0

0 = -(150ft^2)/W^2 + 2

(150 ft^2)/W^2 = 2

(150ft^2) = 2*W^2

(150ft^2)/2 = W^2

75 ft^2 = W^2

√(75ft^2) = W = 8.66ft

And remember that:

L = (75ft^2)/W

replacing with W = √(75ft^2)

L = (75ft^2)/√(75ft^2) = √(75ft^2)

Then:

W = L = √(75ft^2) = 8.66ft

6 0

3 years ago

1+1=?,<br> Plz Helppp meeeeeeeeeeeeeeeeeee

kramer

Answer:

2 is teh answer

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Solve the following quadratic by<br> completing the square.<br> y = x2 - 6x +2

eduard

Answer:

Roots of the equation are (−3−√7) , (−3+√7)

Step-by-step explanation:

For solving a quadratic equation using completing the square method:

set the value of 'y' = 0
add and subtract the square of half of the coefficient of x.
solve the obtained equation for 'x'

given equation:

y = x^2 - 6x +2

0 = x^2 - 6x + 2

0 = x^2 - 3^2 + 3^2 -6x +2

0 = (x-3)^2 -7

7 = (x-3)^2

± $\sqrt{7}$ = x-3

± $\sqrt{7}$ + 3 = x

learn more about quadratic equations at

brainly.com/question/17177510

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4 0

2 years ago

Complete the table of values.

Contact [7]

Answer:

Step-by-step explanation:

d=4

e=2

f=6

6 0

3 years ago