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denis-greek [22]
3 years ago
11

What is 80%times360%

Mathematics
1 answer:
zvonat [6]3 years ago
8 0

Answer:2.88

Step-by-step explanation:Because 80% is 0.8 and 360% is 3.6 and when u multiply them u get 2.88

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Find k if (x+1) 2x^3+kx^2+1
Viktor [21]
<h2>Question:</h2>

Find k if (x+1) is a factor of 2x³ + kx² + 1

<h2>Answer:</h2>

k = 1

<h2>Step-by-step explanation:</h2>

The factor of a polynomial F(x) is another polynomial that divides evenly into F(x). For example, x + 3 is a factor of the polynomial x² - 9.

<em>This is because;</em>

i. x² - 9 can be written as (x - 3)(x + 3) which shows that both (x - 3) and (x + 3) are factors.

ii. If x = -3 is substituted into the polynomial x² - 9, the result gives zero. i.e

=> (-3)² - 9

=> (9) - 9 = 0

Therefore, if (x + a) is a factor of a polynomial, substituting x = -a into the polynomial should result to zero. This also means that, if x - a is a factor of a polynomial, substituting x = a into the polynomial should give zero.

<em><u>From the question</u></em>

Given polynomial: 2x³ + kx² + 1

Given factor: x + 1.

Since x + 1 is a factor of the polynomial, substituting x = -1 into the polynomial should give zero and from there we can calculate the value of k. i.e

2(-1)³ + k(-1)² + 1 = 0

2(-1) + k(1) + 1 = 0

-2 + k + 1 = 0

k - 1 = 0

k = 1

Therefore the value of k is 1.

3 0
2 years ago
What is 2+4/5x15-190?
aleksley [76]

Answer:

- 176

Step-by-step explanation:

2 + 4/5 x 15 - 190

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= 2 + (12) - 190

= 2 + 12 - 190

= 14 - 190

= - 176

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check the picture below.

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2.75                             Answer is  2.911      

0.003                Make sure you line up the decimal points like shown in example

0.158

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2.911

6 0
2 years ago
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