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Nataly [62]
4 years ago
13

50 PTS PLUS I WILL MARK BRAINLIEST

Mathematics
2 answers:
ch4aika [34]4 years ago
7 0
Subtract 5x to both sides
mr Goodwill [35]4 years ago
5 0

Answer:

add 10y to both sides of the equation

Step-by-step explanation:

5x-10y=30

   +10y   +10y

5x=10y+30

/5   /5    /5

x=2y+6

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What is $34 plus 7% sales tax?? Anyone
katrin [286]

$38.52

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8 0
3 years ago
Please help! I'm confused...
maw [93]

So since angle A is 120, so angles B+C=60 because there are 180 degrees in a triangle. So B:C is 2:1. So angle B is 40 and angle C is 20.

4 0
3 years ago
Find the zeros for (x+2)(x-4)
Montano1993 [528]

Answer:

<h2>x = -2 or x = 4</h2>

Step-by-step explanation:

The zeros:

(x + 2)(x - 4) = 0 ⇔ x + 2 = 0 or x - 4 = 0

x + 2 = 0          <em>subtract 2 from both sides</em>

x = -2

x - 4 = 0          <em>add 4 to both sides</em>

x = 4

7 0
3 years ago
In the year 2009, the cost of a flat screen television can be
Ann [662]

<u>Corrected Question</u>

In the year 2009, the cost of a flat screen television can be  modeled by the equation C = -10t^2 + 500 where t is the  number of years since 2009. Factor this cost polynomial.

Answer:

C=10(50-t^2)

Using express exponents, you write C=10(50-t^2)

Step-by-step explanation:

To factor the cost polynomial, C=-10t^2+500, we follow these steps.

Step 1: Determine the greatest common divisor of the terms in the polynomial

The terms in the polynomial are -10t^2$ and 500

The greatest common divisor of -10t^2$ and 500 is 10.

Step 2: Factor the polynomial by dividing each of the terms with the greatest common divisor obtained above.

C=10\left(\dfrac{-10t^2}{10} +\dfrac{500}{10}\right)\\C=10(-t^2+50)\\$We can rewrite this as \\C=10(50-t^2)

6 0
3 years ago
three sets of a sum of a number and four are added to the sum of seven times the same number and thirteen
Marianna [84]

Answer:

Let x be the number.

Given the statement: Three sets of a sum of a number and four are added to the sum of seven times the same number and thirteen.

" sum of a number and four" translated to x + 4

"Three sets of a sum of a number and four" translated to 3(x+4)

"sum of seven times the same number and thirteen" translated to 7x + 13

then;

the expression for the given statement become;

3(x+4) + 7x + 13

Using distributive property: a\cdot (b+c) = a\cdot b + a\cdot c

3x +12 + 7x+ 13

Combine like terms;

10x + 25

Therefore, the simplified expression for Three sets of a sum of a number and four are added to the sum of seven times the same number and thirteen. is,  10x + 25

7 0
4 years ago
Read 2 more answers
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