2 years ago

HELP QUICK! You must find all intervals where f(x) is negative. f(x)=2(x+3)(x-7)

Mathematics

1 answer:

beks73 [17]2 years ago

4 0

Answer:

any # where -2<=x<7

Step-by-step explanation:

(x-7) would be negative and (x+3) positive, resulting in f(x) being negative.

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Simplify: 18q2−45q+25/9q2−25.

Svet_ta [14]

Answer:

$\frac{(6q-5)}{(3q+5)}$

Step-by-step explanation:

Given: $\frac{18q^{2}-45q+25 }{9q^{2}-25 }$

Factorizing the numerator and the denominator, we have:

18 $q^{2}$ - 45q + 25 = 18 $q^{2}$ - 30q - 15q + 25

= (3q - 5)(6q - 5)

and

9 $q^{2}$ - 25 = (3q - 5)(3q + 5)

So that,

$\frac{18q^{2}-45q+25 }{9q^{2}-25 }$ = $\frac{(3q-5)(6q-5)}{(3q-5)(3q+5)}$

= $\frac{(6q-5)}{(3q+5)}$

Therefore,

$\frac{18q^{2}-45q+25 }{9q^{2}-25 }$ = $\frac{(6q-5)}{(3q+5)}$

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3 years ago

The number of bags of soybean seeds N that a farmer needs varies jointly as the number of acres a to the planted and the pounds

frozen [14]

Answer:

N= 15000

Step-by-step explanation:

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3 years ago

Select the statement that describes this expression: 10 + fraction 1 over 4x (5 + 3) − 3.

Valentin [98]

Answer:

10 more than fraction 1 over 4 of the sum of 5 and 3, then subtract 3

Step-by-step explanation:

Can't be the other ones

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3 years ago

Read 2 more answers

Urn 1 contains 7 red balls and 4 black balls. Urn 2 contains 3 red ball and 1 black ball. Urn 3 contains 5 red balls and 1 black

Marrrta [24]

Choice urn_1: 1/3
choice R: 5/8 ==>1/3*5/8=5/24
Choice urn_2: 1/3
Choice R: 3/4 ==> 1/3*3/4=1/4
Choice urn_3: 1/3
Choice R:4/6=2/3 ==> 1/3*2/3=2/9

Total: 5/24+1/4+2/9=15/72+18/72+16/72=49/72

Read more on Brainly.com - brainly.com/question/1904508#readmore

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3 years ago

Anybody got an easy question for me to answer in any subject?

amid [387]

Answer: Reshma is making a necklace using green beads and purple beads in a ratio represented on the following double number line. Fill in the missing values on the diagram.

If Reshma uses 20 green beads, how many purple beads will she use?

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3 years ago