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White raven [17]
4 years ago
10

Please help me!!!!!!!

Mathematics
1 answer:
dusya [7]4 years ago
5 0

Answer:

  544 units²

Step-by-step explanation:

The surface area is the sum of the areas of the three rectangular faces and the two triangular bases.

  SA = 10×14 +10×14 +12×14 + 2(1/2)(12)(8)

  = 14×(10+10+12) +12×8

  = 448 +96

  = 544 . . . . square units

_____

The area of a rectangle is the product of its dimensions:

  A = LW

The area of a triangle is half the product of its base and height:

  A = (1/2)bh

Here, both triangles have the same area, so we multiplied the area of one of them by 2 to get the area of both of them.

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A line crosses through the points (0,2) and (-10, -16) Which of the following is the slope of the line?
Elodia [21]

Answer:

  9/5

Step-by-step explanation:

The slope between the two points can be found by ...

  m = (y2 -y1)/(x2 -x1)

  m = (-16-2)/(-10-0) = -18/-10

  m = 9/5

The slope of the line is 9/5. Perhaps this is a match to choice A.

3 0
3 years ago
Reduce this algebraic fraction 27c^4d^5/9c^7d^4 ...?
Naddika [18.5K]
The answer is \frac{3d}{ c^{3}}

The fraction is: \frac{27 c^{4} d^{5}}{9 c^{7}  d^{4} }
Let's rewrite it: \frac{27 c^{4} d^{5}}{9 c^{7} d^{4} }= \frac{27}{9}*\frac{c^{4}}{c^{7}}*\frac{d^{5}}{d^{4} }

Now, let's use the rule \frac{ x^{a} }{ x^{b}} =  x^{a-b} = \frac{1}{ x^{b-a} }:
\frac{27}{9}*\frac{c^{4}}{c^{7}}*\frac{d^{5}}{d^{4} }=3* \frac{1}{c^{7-4}}  * d^{5-4} =3* \frac{1}{ c^{3} } *d^{1}= \frac{3d}{ c^{3} }
5 0
3 years ago
One acre of land is equivalent to 43,560 square feet. Write a program that calculates the number of acres in a tract of land wit
jek_recluse [69]

Answer:

float numAcres(int squareFeet){

float nA;

nA = (float)squareFeet/43560;

return nA;

}

Step-by-step explanation:

One acre of land is equivalent to 43,560 square feet.

So in x square feet, we are going to have x/43560 acres of land.

I am going to write a C program for you

float numAcres(int squareFeet){

float nA;

nA = (float)squareFeet/43560;

return nA;

}

4 0
4 years ago
Help me my grades are due tomorrow
n200080 [17]

Answer: 7p.m

Step-by-step explanation: what you would do is multiple 14 by half and that would be how long it took her.

3 0
3 years ago
Read 2 more answers
The formula for determining the pressure, p, exerted
STALIN [3.7K]

Answer:

p = s + dgh

p - s = dgh

(p - s) / dg = h

Answer = h= p-s/dg

5 0
3 years ago
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