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san4es73 [151]
4 years ago
13

(X-4)+(2x-7) Find the sum

Mathematics
1 answer:
sammy [17]4 years ago
4 0

Answer:

3x - 11

Step-by-step explanation:

(x-4)+(2x-7)

We can remove the parenthesis because we are adding and not multiplying.

x - 4 + 2x - 7   Combine like terms

x + 2x - 4 - 7

3x - 4 + - 7

3x - 11

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what type of decimal expansion does a rational number has how can you distinguish it from decimal expansion of irrational number
eimsori [14]

Answer:

answer to the second part: A rational number has a finite number of decimal places, but an irrational number decimal places go on forever.

6 0
3 years ago
The soccer team is conducting a fundraiser selling long-sleeved t-shirts for $14 and short-sleeved t-shirts for $10. So far the
Dahasolnce [82]

Answer:

Step-by-step explanation:

If x represents the number of long-sleeved shirts and each of these cost $14, then the expression for that is 14x; likewise for short-sleeved shirts that are represented by y. The expression for short-sleeved shirts that cost $10 apiece is 10y. Putting that together with the fact that they earned less than $200 when selling these at the same time, the inequality is

14x + 10y < 200

7 0
3 years ago
  David is buying a new car for $21,349.00. He plans to make a down payment of $3,000.00. If he's to make monthly payments of $3
loris [4]

Answer:

(A)

Step-by-step explanation:

Cost of car = $21,349

Down payment = $3000

Remaining amount left = $18,349

Monthly payments (A) = $352

n = Total periods = 5years = 5*12= 60

P(loan amount) = 18,349

r = rate of interest monthly = r/12

Using formula, A = \frac{P\frac{r}{12} }{1-(1+\frac{r}{12})^{-60} }

352 = [tex]\frac{18349\frac{r}{12} }{1-(1+\frac{r}{12})^{-60} }[/tex

    =   0.059(approx)

Annual percentage rate = 5.9%


6 0
4 years ago
Read 2 more answers
The diameter of a circle is 20 in. Find its circumference in terms of \piπ.
xz_007 [3.2K]

Answer:

Step-by-step explanation:

C=2\pi r$ since d=2r$ \\ \\ C=\pi d,\ d=20\\ \\ C=20\pi in

4 0
3 years ago
What is the total surface area of a right circular cylinder with base radius 7cm and height 12cm.
mojhsa [17]

Answer:

Using 3.14  for pi

835.24 cm^2

Using the pi button for pi

835.6636459 cm^2

Step-by-step explanation:

The surface area of a cylinder is given by

SA = 2 pi r^2 + 2 pi r h

     = 2 * pi ( 7)^2 + 2 pi ( 7) * 12

    = 98 pi + 168 pi

    =266 pi

Using 3.14  for pi

835.24 cm^2

Using the pi button for pi

835.6636459 cm^2

8 0
4 years ago
Read 2 more answers
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