A brick measures 30 cm × 10 cm × 7 1/2. How many bricks will be required for a wall 30 m long. 2 m high and 3/4 m thick?

Answers

Answer 1
Answer:

Final answer:

Given the dimensions of the brick, we first calculated its volume in cubic meters. Then we calculated the volume of the wall in cubic meters. Dividing the volume of the wall by the volume of a single brick, we find that we need 20,000 bricks to build the wall.

Explanation:

This is a problem in Mathematics, specifically involving volume and unit conversion. The volume of the brick can be calculated using the formula for the volume of a rectangular prism, Volume = length x width x height. The dimensions given for the brick are in centimeters and the wall dimensions are given in meters. Therefore, we must convert the brick dimensions to meters: 30 cm = 0.3 m, 10 cm = 0.1 m and 7.5 cm = 0.075 m. The volume of one brick is 0.3 m * 0.1 m * 0.075 m = 0.00225 cubic meters.

The volume of the wall is also given by the formula length x width x height, so it is 30 m * 2 m * 0.75 m = 45 cubic meters. To find the number of bricks required to fill this volume, divide the volume of the wall by the volume of a single brick, 45 m³ / 0.00225 m³ = 20000 bricks. Thus, it will take 20,000 bricks to build the wall.

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Answer 2
Answer:

Answer:

the answer is 45

Step-by-step explanation:

all you have to do is multiply 30*2*3/4

to get 45


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How many minutes in 6 hours and 42 minutes

Answers

There are 60 minutes in an hour 60×6=360 360+42=402 so it would be 402 minutes
 Well, in 6 hours there is a total of 360 minutes. Plus the next 42 minutes then,  we will have 402 minutes as a final total. So, like we have 60 minutes in each hour we need to multiply 60 by the number of hour that is 6 and then add the next 42 minutes to get the final answer..Like this: 60 x 6 = 360 + 42 = 402.

The equation represents the function f, and the graph represents the function g. f(x)=6x-5A.

The rate of change of f is twice the rate of change of g.

B.

The rate of change of g is twice the rate of change of f.

C.

The rate of change of f is 3 times the rate of change of g.

D.

The rate of change of f is the same as the rate of change of g.

Answers

Answer:

A. The rate of change of f is twice the rate of change of g.

Step-by-step explanation:

The first function is f(x)=6x-5

The slope of this function is the coefficient of x. It is the same as the rate of change of f(x)

m=6

From the graph, g(x) passes through(-2,-4) and (0,2)

We use the slope formula: (y_2-y_1)/(x_2-x_1) to find the slope of g(x).

m=(2--4)/(0--2)=(6)/(2) =3

Since 6=2(3), we conclude that, the rate of change of f is twice the rate of change of g.

Answer:

A

Step-by-step explanation:

More than 6 inches but less than 1 foot

Answers

A pencil with length { 7in or, 8in. or, 9in. or, 10in. or, 11in.}

What is the cοnversiοn factοr?

A cοnversiοn factοr is a number used tο change οne set οf units tο anοther, by multiplying οr dividing.

When a cοnversiοn is necessary, the apprοpriate cοnversiοn factοr tο an equal value must be used.
Fοr example, tο cοnvert inches tο feet, the apprοpriate cοnversiοn value is 12 inches equals 1 fοοt.

Given that,

we have to name one object that is more than 6 inches but less than 1 foot.

now, we know that,

6 inches < 1 foot

as, we have,

1 foot = 12 inches

now, we know that,

more than 6 inches but less than 1 foot means,

anything more than 6 inches but less than 12 inches or 1 foot.

now, we get, the object can be any thing with length of more than 6 in. & less than 12in.

i.e. length is < 12 and, length is > 6

so, the possible lengths are = { 7in, 8in. , 9in. , 10in. , 11in.}

so, we get,

A pencil with length { 7in or, 8in. or, 9in. or, 10in. or, 11in.}

Hence, name one object that is more than 6 inches but less than 1 foot is, A pencil with length { 7in or, 8in. or, 9in. or, 10in. or, 11in.}

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6 inches < 1 foot

anything more than 6 inches but less than 12 inches or 1 foot

I need help with this

Answers

Answer:

Option B

Option C

Step-by-step explanation:

x^(2) +2x=4

we need to divide the coefficient of x by half since it is required for completing square, this term is added and subtracted at the same time to keep the equation intact, so we have

x^(2) +2x+1-1=4

later we have

(x+1)^(2) -1=4

(x+1)^(2)= 4+1

(x+1)^(2) = 5

\sqrt{(x+1)^(2)} =√(5)

we know

\sqrt[2]{a^(2)} = abs (a)

abs(x+1)=√(5)

we have

x+1=√(5)

or

x+1= -√(5)

so we have

x=√(5)-1

x=-√(5)-1

finally

x=+- √(5)-1

The second is obtained by summing the two given equations

f(x)=8x-10

g(x)=3x+5

-----------------

f(x)+g(x)=11x-5

Whats the ratio of 72 to 126

Answers

if you simplify everything you get a ratio of 4:7. what gets taken out of each side is 18

What is the value of 62 tens

Answers

62 tens is equal to 620, so 62x10=620. Lets split the equation up, 60 x 10 = 600 , 2 x 10 = 20 , so now add 600 and 20, 600 + 20 = 620

Hopefully this helped you.
The value of 62 tens would be just like multiplying 62 by 10 so 62x10=620
Your answer is 620.

Hope this Helps