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sladkih [1.3K]
3 years ago
14

-x^(2)-12=-87 Please explain your answer, and how I make the x positive

Mathematics
1 answer:
spayn [35]3 years ago
7 0
Solve for x over the real numbers:
-x^2 - 12 = -87
Add 12 to both sides:
-x^2 = -75
Multiply both sides by -1:
x^2 = 75
Take the square root of both sides:
Answer:  x = 5 sqrt(3) or x = -5 sqrt(3)  both Answers are correct
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Answer:

Step-by-step explanation:

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Help will give brainliest​
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9514 1404 393

Answer:

  1. 198
  2. $1.20

Step-by-step explanation:

1. Let x represent the number of apples left. Then the number of mangosteens left is 1/6x. The starting number in each case is the number left plus the number sold. The starting numbers are equal, so we have ...

  x + 201 = (1/6)x +366

  5/6x = 165 . . . . . . . . . . subtract 1/6x+201

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198 apples were left.

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2. Let d represent the cost of a drink. The cost of a drink is 3/5 the cost of a snack, so the cost of a snack is 5/3 the cost of a drink. Then Alice's total expenditure was ...

  15d +12(5/3d) = 42

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The cost of a drink was $1.20.

4 0
3 years ago
Dan has $3.75. If he spends 1/3 of his money, how much will he have left?<br><br> HELLPP
qwelly [4]
Dan spends:
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Answer:
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4 0
4 years ago
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Straight-Line Depreciation A small delivery truck was purchased on January 1 at a cost of $21,920. It has an estimated useful li
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Answer:

Rate of depreciation per year  is 4310 $/ year and the depreciation schedule is given below.

Step-by-step explanation:

According to the question,

since, it is straight-line depreciation,

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So we can prepare the following table.  (year = 0 for the base period)

Year    Depreciation   Accumulated      Book value

              expense        depreciation  

                 ( in $)               (in $)                    (in $)

 0              0                         0                      21920

 1            4310                    4310                    17610

 2           4310                     8620                  13300

 3           4310                      12930                  8990

 4           4310                      17240                  4680

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3 years ago
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Is there anymore information?
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3 years ago
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