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ch4aika [34]
2 years ago
8

Please help with this math problem!! :)

Mathematics
1 answer:
Alina [70]2 years ago
5 0

Answer:

Step-by-step explanation:

a^2 + B^2 = C^2

and all angle added together should make 180  

    the left box should be 20 and the right box should 17.321

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The product of two consecutive positive integers is greater than their sum by 209. Find these numbers.
Delicious77 [7]

Answer:

I think it is -4 and -3

Step-by-step explanation:

8 0
3 years ago
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If the original quantity is 8 and the new quantity is ​,2 what is the percent​ decrease?
azamat

Answer: 75%

Step-by-step explanation:

75% of 8 is 6.

8 was decreased by 6 to get 2.

8 was decreased by 75% of its initial value to get 2.

Hope this helped!

3 0
3 years ago
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Three people go to a restaurant. Their bill comes to $78.00. They decide to split the cost. One person pays $4.50; the next pers
Nikitich [7]

Answer:

$60.00

Step-by-step explanation:

First person:

$4.50

Second person:

3 times $4.50 = $13.50

Total of first two people:

$4.50 + $13.50 = $18.00

Third person:

$78.00 - $18.00 = $60.00

The third person pays $60.00

8 0
3 years ago
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What is the square root of 100?
natulia [17]

Answer:

10

Step-by-step explanation:

the answer is 10 because 100 divided by 10 is 10

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3 0
2 years ago
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Write a polynomial equation with roots 5 and -9i. X^3-?x^2+?X-?=0
jek_recluse [69]

Answer:

x³ - 5x² + 81x - 405 = 0

Step-by-step explanation:

Complex roots occur in conjugate pairs.

Thus given x = - 9i is a root then x = 9i is also a root

The factors are then (x - 5), (x - 9i) and (x + 9i)

The polynomial is the the product of the roots, that is

f(x) = (x - 5)(x - 9i)(x + 9i) ← expand the complex factors

    = (x - 5)(x² - 81i²) → note i² = - 1

    = (x - 5)(x² + 81) ← distribute

    = x³ + 81x - 5x² - 405, thus

x³ - 5x² + 81x - 405 = 0 ← is the polynomial equation

6 0
3 years ago
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