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3 years ago

Which expressions are equivalent to the on below select all that apply 9x

Mathematics

2 answers:

s2008m [1.1K]3 years ago

8 0

Answer:

B + D

Step-by-step explanation:

Serga [27]3 years ago

5 0

Answer:

B and D

Step-by-step explanation:

Multiplying exponents just adds them.

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What is true about the sum of the two polynomials?

const2013 [10]

Answer:

f'(x) = -f(x) = 9xy² - 6x²y + 5x³

Step-by-step explanation:

f(x) = –9xy² + 6x²y – 5x³

additive inverse: f'(x) = -f(x) = 9xy² - 6x²y + 5x³

f(x) + f'(x) = f(x) -f(x) = (–9xy² + 6x²y – 5x³) + (9xy² - 6x²y + 5x³) = 0

8 0

3 years ago

In a class, 60% of the students are boys and the rest are girls. If the number of boys is 30, how many students are there?

irga5000 [103]

50 total students

20 girls

Explanation:

total students: 100%

----------------

60% → 30

1% → 30/60

1% → 0.5

100% → (0.5 * 100)

100% → 50

number of girls:

total students - number of boys

50 - 30

5 0

2 years ago

Find the complex zeros of x^3+27. write f in factored form

aliina [53]

$x^3+27=0
\\x^3+3^3=0
\\(x+3)(x^2-3x+9)=0
\\x^2-3x+9=0
\\a=1,b=-3,c=9
\\
\\x_{1,2}= \frac{-b\pm \sqrt{b^2-4ac} }{2a} = \frac{-(-3)\pm \sqrt{(-3)^2-4\times1\times9} }{2\times1} =\frac{3\pm \sqrt{-27} }{2} =\frac{3\pm 3\sqrt{3}i }{2} 
\\
\\(x+3)(x-\frac{3+ 3\sqrt{3}i }{2})(x-\frac{3- 3\sqrt{3}i }{2})=0

$

4 0

3 years ago

Help i don't understand this.

Arte-miy333 [17]

Answer:

7/23

Step-by-step explanation:

There seven black socks and all of the socks together is 23.

4 0

3 years ago

A minor league baseball team plays 122 games in a season. If the team won 14 more than three times as many games as they lost,

Leviafan [203]

W + L = 122
W = 3L + 14

3L + 14 + L = 122
4L + 14 = 122
4L = 122 - 14
4L = 108
L = 108/4
L = 27 <=== they lost 27 games

W = 3L + 14
W = 3(27) + 14
W = 81 + 14
W = 95 <=== they won 95 games

8 0

3 years ago