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saveliy_v [14]
3 years ago
13

What is the approximate solution of the equation x^2+12=0

Mathematics
1 answer:
Serggg [28]3 years ago
6 0

Answer:

x=-2i\sqrt{3} , 2i\sqrt{3}

Step-by-step explanation:

The equation is already set equal to zero, so that is a good start

We then need to get x by itself. To do so we need to subtract 12 from both sides to get x² = -12

Then we need to take the square root of both sides\sqrt{x^{2} } =\sqrt{-12} which gives us x=-2i\sqrt{3} , 2i\sqrt{3}

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For y coordinate,

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If AB is parallel to CD and the slope of AB IS -3 what is the slope of CD?
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3 years ago
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Carrie has 40 more nickels than Joan has dimes. They both have the same amount of money. How many coins does each girl have? Wha
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Answer:

Carrie and Joan have 80 nickels and 40 dimes, respectively, and each one has an amount of money of 4 US dollars.

Step-by-step explanation:

Let be x and y the amounts of nickels and dimes that Carrie and Joan have, as c the total amount of money that both Carrie and Joan have. A nickel is a five cent coin and a dime is a ten cent coin.

The following equations are constructed after a careful reading on statement:

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Joan's amount of money:

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Relation between amounts of coins:

x = y+40 (Eq. 3)

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Then, we reduce the resulting formula by (Eq. 3):

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c = 0.05\cdot (80)

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