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3 years ago

Multiply: (9x − 5)(2x2 + 12x − 3)

Mathematics

2 answers:

schepotkina [342]3 years ago

6 0

I agree with the person on top the answer will be A

Shtirlitz [24]3 years ago

3 0

Answer:

A) is your answer

Step-by-step explanation:

Multiply the 2x by 9x

then you take the second variable in the second equation and mulitply it by 9x. giving you 98 x squared

THEN you take 9x times Negative 3 and get -87

AND NEGATIVE 5 TIMES NEGATIVE 3 IS

POSTIVE 15

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3 years ago

What integer divided by six, less eighteen, is negative twenty-two?

nadya68 [22]

Do you mean the integer is less than eighteen or do you mean minus 18?

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3 years ago

Is -6 rational or irrational

alexgriva [62]

Answer:

It is a rational number

Step-by-step explanation:

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5 0

3 years ago

Read 2 more answers

Whats wrong with my answers?

malfutka [58]

77a)

$y=0.5x-2\implies y=\cfrac{x}{2}-2\implies \stackrel{x-intercept}{0=\cfrac{x}{2}-2} \\\\\\ 2=\cfrac{x}{2}\implies 4=x\qquad \qquad \boxed{(4~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=0.5(0)-2}\implies y=-2\qquad \qquad \boxed{(0~~,~~-2)}$

77b)

$y=-0.4x+2\implies y=-\cfrac{4x}{10}+2\implies y=\cfrac{2x}{5}+2 \implies \stackrel{x-intercept}{0=\cfrac{2x}{5}+2} \\\\\\ -2=\cfrac{2x}{5}\implies -10=2x\implies \cfrac{-10}{2}=x\implies -5=x~\hfill \boxed{(-5~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=-0.4(0)+2}\implies y=2\qquad \qquad \boxed{(0~~,~~2)}$

8 0

2 years ago

In the month of October, the population of a species of fish in a river increased by a factor of 1.05 every day. The function be

kumpel [21]

In the month of October, the population of a species of fish in a river increased by a factor of 1.05 every day. The function below shows the number of fish in the river f(x) after x days:

$f(x) = 100\cdot (1.05)^x.$

The reasonable domain of the function will be the number of days of the period when the population is explored. The research take place in October, this month has 31 days, thus, the reasonable domain is

0 ≤ x ≤ 31

Answer: 0 ≤ x ≤ 31

5 0

3 years ago

Read 2 more answers