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3 years ago

Find the percent of change: 30 inches to 24 inches

Mathematics

1 answer:

vlabodo [156]3 years ago

3 0

It changes every 6 inches

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What are the domain and range of f(x)=(1/5)x

bija089 [108]

Answer:

Step-by-step explanation:

hello :

f(x)=(1/5)x

the domain is : D= ℝ =]-∞ ,+∞[ (linair function)

the range is : E= ℝ =]-∞ ,+∞[ ( f^-1 is linair function)

5 0

3 years ago

Factor by Grouping.

Komok [63]

Answer:

The ac product of $35x^2+41x+12$ is <u>420</u>.

The factors of the ac product that add to 41 are <u>20</u> and <u>21</u>.

$35x^2+41x+12 =$ $(7x+4)(5x+3)$

Step-by-step explanation:

1) The general form of a quadratic is $ax^2 + bx + c$ . Hence, multiplying 35 by 12 gives you the product of ac, which is 420.

2) We need to find two numbers that multiply to 420 and add up to 41 <u>simultaneously</u>. If we pull out the factors of 420, two of them will be 20 and 21, which multiply to 420 as well as add up to 41.

3) Write $41x$ as a sum.

$35x^2+20x+21x+12$

Now, we can factor them out by grouping.

$35x^2+20x+21x+12\\5x(7x+4)+3(7x+4)$

Since, $7x +4$ is common in both of the factors, we only take one of the $7x+4$ along with $5x$ and $3$ .

$(7x+4)(5x+3)$

6 0

2 years ago

Read 2 more answers

Which is the completely factored form of 12x4 + 39x3 + 9x2?

Troyanec [42]

<h3><u>Explanation</u></h3>

Given expression

${12x}^{4} + {39x}^{3} + {9x}^{2}$

Factor the expression by using common factor.

We csn pull out 3x² out of the expression.

${3x}^{2} (4 {x}^{2} + 13x + 3)$

We simply pull out the x-term with lowest degree and 3 out of the expression. If another expression cannot be factored after first factoring then that's the final answer.