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4 years ago

What is the square root of -1?

Mathematics

2 answers:

kenny6666 [7]4 years ago

7 0

Answer:

The square root of -1 is i

Step-by-step explanation:

The reason ( i ) is the square root of -1 is because any number times itself is a positive number or zero. Therefore negative numbers technically can't have square roots, so instead we use ( i ) ( Imaginary Number)!!

Mice21 [21]4 years ago

3 0

Answer:

the square root of -1 is actually "i"

Step-by-step explana

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He rain caused the river to ride a total of 6 2/3 inches. The river was rising at an average of 2/3 of an inch each hour. How ma

Kobotan [32]

To find out how many hours it rained, divide the total rise in the river by the amount it rose every hour.

$\sf 6\dfrac{2}{3}\div\dfrac{2}{3}$

First convert the mixed number into an improper fraction. We do this by multiplying the denominator to the whole number, adding it to the numerator, which becomes our new numerator, and we keep the denominator the same:

$\sf\dfrac{20}{3}\div\dfrac{2}{3}$

When dividing fractions we flip(the reciprocal) the one we're dividing by and multiply:

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5 0

3 years ago

5/8 - 4/5 subtract as indicated and express your answer in lowest terms

Nitella [24]

Answer:

-7/40

Step-by-step explanation:

5/8 - 4/5

~Find common denominators

25/40 - 32/40

~Subtract

-7/40

Best of Luck!

4 0

3 years ago

Find the largest number which divides 870 and 720 exactly

mote1985 [20]

$870=29\times5\times3\times2$
$720=5\times3^2\times2^4$

$\mathrm{gcd}(870,720)=2\times3\times5=30$

4 0

4 years ago

A plane flies x mph. How far can it go in y hours?

wel

The answer is xy hours.

8 0

3 years ago

Please help. This is due soon. Ty

Nataliya [291]

Answer:

3 dollars and 9 cents.

Step-by-step explanation:

From the question given above, the following data were obtained:

Total amount = 20 dollars

Amount for gift A = 9 7/10 dollars

Amount for gift B = 6 2/5 dollars

Amount for gift C =?

The amount of money she has left for gift C can be obtained as follow:

A + B + C = 20

9 7/10 + 6 2/5 + C = 20

Change to improper fraction

97/10 + 32/5 + C = 20

(97 + 64)/10 + C = 20

161/10 + C = 20

Collect like terms

C = 20 – 161/10

C = (200 – 161)/10

C = 39/10

Change to mixed fraction

C = 3 9/10 dollars

C = 3.9

C = 3 dollars and 9 cents

Therefore, Kathy had 3 dollars and 9 cent for gift C

5 0

3 years ago