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lions [1.4K]
3 years ago
7

Rhonda bought a new laptop for $500. The laptop

Mathematics
1 answer:
ipn [44]3 years ago
4 0

Answer:

405

Step-by-step explanation:

A = P(1-r)^t

A = 500 (1-.1)^2

A = 500 (.9)^2

   = 500*0.81

   = 405

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Which of the following coordinate pairs make the equation x - 9y = 12 true?
Ne4ueva [31]

Options:

(12,0)     (0,12)    (3,-1)    (0,-4/3)

Answer:

(12,0) ,  (3,-1)  and (0,-4/3)

Step-by-step explanation:

Given

x - 9y = 12

Required

Which option is true?

A coordinate point is of the form; (x,y)

So, we have to substitute the x and y values in the given equation.

A. For (12,0)

x = 12 and y = 0

x - 9y = 12 becomes

12 - 9*0 = 12

12 - 0 = 12

12 = 12

<em>This is true</em>

B. For (0,12)

x = 0 and y = 12

x - 9y = 12 becomes

0 - 9*12 = 12

- 9*12 = 12

- 108 = 12

<em>This is false</em>

C. For (3,-1)

x =3 and y = -1

x - 9y = 12 becomes

3 - 9*-1 =12

3 + 9 =12

12 = 12<em></em>

<em></em>

<em>This is true</em>

D. For (0,-4/3)

x = 0 and y = -\frac{4}{3}

x - 9y = 12 becomes

0- 9*-\frac{4}{3} = 12

0+ 9*\frac{4}{3} = 12

0+ 3*4 = 12

0+12 = 12

12 = 12

<em></em>

<em>This is true</em>

<em></em>

<em>Hence, (12,0) ,  (3,-1)  and (0,-4/3) are true values of the equation</em>

5 0
3 years ago
8x2 + 96x + 288 <br> i really need help thanks
Elodia [21]

Answer:

8x² + 96x + 288 = 8(x + 6)²

Step-by-step explanation:

96÷8=12

288÷8=36

8x² + 96x + 288 = 8(x² + 12x + 36)

                           = 8(x² + 2(1)(6)x + 6²)

                           = 8(x + 6)²

7 0
3 years ago
Which of the following functions is graphed below?
Gala2k [10]

Answer: I'm pretty sure Not entirely sure that it's A perpendicular function

Step-by-step explanation:

8 0
3 years ago
Wasim's mom asks him to clean his room every 6 days, and wash his windows every 15 days. If he does them both today, when is the
White raven [17]

Answer:

30 days

Step-by-step explanation:

We solve the above question using Lowest Common Multiple Method.

Find and list multiples of each number until the first common multiple is found. This is the lowest common multiple.

Multiples of 6:

6, 12, 18, 24, 30, 36, 42

Multiples of 15:

15, 30, 45, 60

Therefore,

LCM(6, 15) = 30

Therefore, the NEXT time he will be cleaning his room and washing his windows on the same day is in 30 days time

6 0
3 years ago
PLEASE HELP ASAP<br> 20 POINTS
Artemon [7]

Answer:

linear

Step-by-step explanation:

From the table, we can deduct that y = 1.3x, which means it is a linear function. A linear function, when graphed, is a straight line.

8 0
2 years ago
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