3 years ago

What’s the definition of the number i?

Mathematics

1 answer:

Valentin [98]3 years ago

3 0

Answer:

Step-by-step explanation:

When (i) is multiplied to itself it = -1

The number (i)is used for imaginary numbers.

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x,y, and z to the nearest tenth .(hint: use altitude and leg rules) PLEASE HELP FAST !!! please solve and show steps

madreJ [45]

Use the Pythagorean theorem to find z:

z = √(6^2 + 9^2)

z= √(36 + 81)

z = √117

z = 3√13 = 10.8

Use leg rule to find x:

x/6 = 6/9

Cross multiply:

9x = 36

Divide both sides by 9:

x = 36/9

x = 4

Use Pythagorean theorem to find y:

y = √(6^2 + 4^2)

y= √(36 + 16)

y = √52

y = 2√13 = 7.2

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3 years ago

You have a total of 42 math and science problems for homework. You have 10 more math problems than science problems. How many pr

elena-14-01-66 [18.8K]

Answer:

number of math problems = 26

number of science problem = 16

Step-by-step explanation:

a total of 42 math and science problems for homework

Let m be the number of math problems and 's' be the number of science problems

$m+s=42$

You have 10 more math problems than science problems

$m=s+10$

substitute s+10 for m in the first equation

$m+s=42$

$s+10+s=42$

$2s+10=42$

subtract 10 from both sides

$2s = 32$

divide both sides by 2

$s= 16$

$m=s+10$

$m=16+10$

$m=26$

number of math problems = 26

number of science problem = 16

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4 years ago

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Gwar [14]

Answer:

5p+4>14 (A)

Step-by-step explanation:

Open dot means that the value is not included.

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Tom's real estate office reports that the office's income last month was $315,600, while expenses were $19,567.20. What percent

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