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lana [24]
3 years ago
7

Please help me with this one

Mathematics
2 answers:
Zina [86]3 years ago
8 0

\huge\boxed{\mathfrak{Answer}}

l = 5 \: cm \\ w = 2 \: cm \\ h = 7 \: cm

The formula to find SA => 2lh + 2lw + 2hw

SA => 2lh + 2lw + 2hw \\  = 2 \times 5 \times 7 + 2 \times 5 \times 2 + 2 \times 7 \times 2 \\  = 70 + 20 + 28 \\  = 118  \: \: cm {}^{2}

=> The surface area of the rectangular prism is <u>1</u><u>1</u><u>8</u><u> </u><u>cm²</u><u>.</u>

Alex73 [517]3 years ago
3 0

Answer:

2×5×7+2×5×2+2×7×2

70+20+28

108cm^2

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gogolik [260]

Answer:

Possible

Step-by-step explanation:

The rule for triangle side lengths is that the two shortest sides must add up to the longest side so it is possible because

3+7 = 10

Two short sides = The longest side

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3 years ago
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The length of a square is 4x-3. Find the area in terms of x
prisoha [69]

Answer:

The area  of square in terms of x = 16x² -24x + 9

Step-by-step explanation:

It is stated in the question that the length of a square = 4x - 3

Formula to find the area of the square is

<h2 /><h2>Area = length²</h2><h2 />

Area = ( 4x - 3 )²

<em>by using ( a - b )² = a² + b² - 2ab</em>

here a = 4x and b = -3

So,

(4x)² + (-3)² - 2(4x)(3)

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16x² + 9 - 24x

16x² -24x + 9

The area  of square in terms of x = 16x² -24x + 9

6 0
3 years ago
2.1m = 25.62 solve the equation
pychu [463]
<span>2.1m = 25.62
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7 0
3 years ago
4x/5 - 3x/7 = 4x/7 + 5x/7 can anyone please help with explanation...​
kirill115 [55]

Answer: x=0

Step-by-step explanation:

Multiply both sides of the equation by 35, the least common multiple of 5,7.

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Multiply 7 and 4 to get 28.

28x−5×3x=5×4x+5×5x

Multiply −5 and 3 to get −15.

28x−15x=5×4x+5×5x

Combine 28x and −15x to get 13x.

13x=20x+25x

Combine 20x and 25x to get 45x.

13x=45x

Subtract 45x from both sides

13x−45x=0

Combine 13x and −45x to get −32x

−32x=0

Product of two numbers is equal to 0 if at least one of them is 0. Since −32 is not equal to 0, x must be equal to 0.

X=0

7 0
2 years ago
Please help me answer this question. I have the answer but i don’t know how to get to it.
Aleksandr [31]

Answer:

what do you mean

Step-by-step explanation:

what do you mean

7 0
3 years ago
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