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Andru [333]
3 years ago
7

PLZ HELP!!!!

Mathematics
1 answer:
Daniel [21]3 years ago
4 0

Answer:

Expression 3x - 3y = 3 (x - y)

Step-by-step explanation:

Expression equal to 3x - 3y = 3 (x-y)

- By taking 3 common from the equation

Eg : If x = 5 , y = 3

3x - 3y = 3 (5) - 3 (3) = 15 - 9 = 6

3 (x - y) = 3 ( 5 - 3 ) = 3 (2) = 6

As both above are equal, the expression equivalency is hence proven .

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Can someone help me with this question ? Show steps please
jek_recluse [69]

Answer:

B) \boxed{A_T=108\;in^2}

Step-by-step explanation:

That is a triangular prism and thus, it has two bases that are triangles, in this case, right triangles, whose hypotenuse is 5 in. long and one of its legs is 4 in. and the other one, 3 in.

The first step is to find the area of both bases like this:

A_B=2\left(\dfrac{b\cdot h}{2}\right)=b\cdot h=4\cdot 3\\\\ \boxed{A_B=12\;in^2}

The second step is to get the lateral area, which is compound of three rectangles, hence the process is the following:

A_L=b_1\cdot h_1+b_2\cdot h_2+b_3\cdot h_3\\A_L=8\cdot3+8\cdot4+8\cdot5\\A_L=24+32+40\\\boxed{A_L=96\;in^2}

Finally, we sum both of the areas found to calculate the total area.

A_T=A_B+A_L\\A_T=12+96\\\boxed{A_T=108\;in^2}

So, the answer is option B).

4 0
3 years ago
What is the value of a?
wel

Answer: In right triangle XZW, the height WY is the geometric mean of segments ZY and XY.

Hence,

4^2=3 x a,

a=16/3 un.

6 0
3 years ago
Can someone solve this with the method of subtraction using addition please quick
Zina [86]

Answer:1. X=2 y=4

2. X=2.5 y=3

3.x=0 y=-1

Step-by-step explanation:

1. 6x=12

x=2

replace

4+y=8

y=4

2.

8x=20

x=2.5

replace

5+3y=14

y=3

3.

-6y=6

y=-1

replace

x=0

3 0
3 years ago
Some students are keeping track of how much money they earn and spend in one week. Use the table below to answer the following q
son4ous [18]

Answer:

7 TIMES

Step-by-step explanation:

BECAUSE THERE IS 7 DAYS IN A WEEK

5 0
3 years ago
Kevin bought 4.6 pounds of pecans for $50.89. About how much was the cost per pound
CaHeK987 [17]

Answer:

Step-by-step explanation:

4.6 pounds of pecans     1 pound of pecans

_________________ = ______________

50. 89 dollars                   x dollars

Set up an equation like this.

Cross multiply

4.6(x)=50.89(1)

divide both sides by 4.6

x=11.06 (about)

So I pound of pecans costs about 11.06 dollars

6 0
3 years ago
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