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pshichka [43]
3 years ago
5

Katrina said that the lines y=-2/3x + 5 and y=-3/2x + 2 are perpendicular. Explain Katrina's error.

Mathematics
1 answer:
Dominik [7]3 years ago
8 0
The sign should be changed as well
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A construction company purchased some equipment costing $300,000. The value of the equipment depreciates
Daniel [21]

Answer:

Cost of equipment after n years = 300000 x 0.86ⁿ

Step-by-step explanation:

A construction company purchased some equipment costing $300,000.

Price of equipment = 300000 $

The value of the equipment depreciates  (decreases) at a rate of 14% per year.

Let c(n) be the cost of equipment after n years.

\texttt{Cost of equipment after 1 year =}300000-\frac{14}{100}\times 300000=0.86^1\times 300000\$\\\\\texttt{Cost of equipment after 2 years =}0.86^2\times 300000\$\\\\\texttt{Cost of equipment after 3 years =}0.86^3\times 300000\$\\\\\texttt{Cost of equipment after n years =}0.86^n\times 300000\$

Cost of equipment after n years = 300000 x 0.86ⁿ

5 0
3 years ago
Which test point holds true for y − 2x ≤ 1?
Ira Lisetskai [31]
2 - 2 * 0 ≤ 1 
<span>2 ≤ 1 </span>

<span>4 - 2 * (-2) ≤ 1 </span>
<span>8 ≤ 1 </span>

<span>4 - 2 * (1) ≤ 1 </span>
<span>2 ≤ 1 </span>

<span>0 - 2 * 5 ≤ 1 </span>
<span>-10 ≤ 1 </span>
<span>(TRUE</span>
3 0
4 years ago
How do you factor x²-100 ?
Strike441 [17]

Answer:

(x+10)(x-10)

Step-by-step explanation:

both numbers can be squared so you have to take out the square and since 100 is negative one must be positive and one must be negative

5 0
3 years ago
I need help to answer this
Anna [14]
Subtract 59 from both sides, you get x=-179
6 0
3 years ago
he Laser family went to the movie theater. Tickets were $7.50 each, a bag of popcorn was $3.50, and a soda was $2.00. How much w
DENIUS [597]

Answer:

$30 for 4 tickets  $10.5 for 3 bags of popcorn and $4 for 2 sodas.  Together the family will have to pay $44.5.

Step-by-step explanation:

5 0
3 years ago
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