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Alisiya [41]
3 years ago
5

what is the algebraic equation 3 times the sum of a number and 7 is 2 less than five times the number

Mathematics
1 answer:
stealth61 [152]3 years ago
7 0
Let n = number

"3 times the sum of a number and 7" translates to 3(n + 7)

"2 less than five times the number" translates to 5n - 2

The word "is" becomes the equals sign.

3(n + 7) = 5n - 2

I think you already asked this one. 
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Answer:

  132 mm^2

Step-by-step explanation:

The line added to the figure in the attachment shows it can be divided into two figures whose area is easily calculated.

  1. A parallelogram of base length 20 mm and height 4 mm:

     A = bh = (20 mm)(4 mm) = 80 mm^2

  2. A trapezoid with bases 32 mm and 20 mm, and height 2 mm:

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The total area of the figure is then ...

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3 years ago
What is 45% written as a fraction
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The most used is \frac{45}{100}

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2 years ago
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C.

Step-by-step explanation:

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3 years ago
You select a letter at random from the letters shown. Express the following probabilities as a fraction, a decimal, and a percen
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Write the quadratic equation y= x^2 -6x = 7 in vertex form.
lapo4ka [179]

Answer:

(x - 3)² - 16 = 0

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Subtract 7 from both sides

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Substitute x = 3 into the equation for y

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7 0
2 years ago
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