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yan [13]
4 years ago
7

Determine how many solutions each equation has and solve each equation using the quadratic formula.

Mathematics
1 answer:
Vikki [24]4 years ago
7 0

Answer:

9 ± 3 i √ 7  / 2

Step-by-step explanation:

hope this helps

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Convert the following repeating decimal to a fraction in simplest form .31 with the 1 repeating
bekas [8.4K]

Answer:

14/45

Step-by-step explanation:

So we have the fraction:

0.3\bar1=0.31111...

We can do this algebraically. Follow to following steps:

Let's let this number equal to n. Thus:

0.31111...=n

Since there is only 1 digit repeating, let's multiply everything by 10. So:

3.1111...=10n

Now, subtract n from both sides:

3.1111-n=10n-n

On the left, substitute the number for n. On the right, combine like terms:

3.1111...-0.31111...=9n

All of the 1s will cancel. So:

3.1-0.3=9n

Subtract:

2.8=9n

Divide both sides by 9:

n=2.8/9

Remove the decimal by multiplying both sides by 10:

n=28/90

Reduce:

n=14/45

And we're done!

Use a calculator to check:

14/45\stackrel{\checkmark}{=}0.31111...

7 0
3 years ago
Ydhdhdgshshsysyhsjdudhdndhdhdbdhdydbwjhswnjshdd​
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Answer:

ty to the points :>

Step-by-step explanation:

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What is the volume of a sphere with an 18 inch diameter ?
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