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2 years ago

Factor Completely: 2x2 − 18

2 answers:

3 0

To factor the given function, find a term that is divisible by both terms. For this problem, the factor would be 2, since 2x^2 and -18 are both divisible by 2.

2(x^2 - 9)

You could further factor out x^2 - 9 because it is factorable by (x - 3) and (x + 3). Thus, it would be

2(x -3)(x+3)

Darya [45]2 years ago

3 0

Answer:

The correct answer you are looking for is answer C

Step-by-step explanation:

2(x + 3)(x − 3)

if we factor both polynomials and if we factor the exponents, take away both sides to get 2x^2 then multiply the terms and simplify

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Find the area, help please

mafiozo [28]

Answer:

Area- 22.5

Step-by-step explanation:

To find the area in a triangle you will want to multiple the base with the height then divide it by two. in this photo you have two options 9X5/2 or 7.5X6/2

remember- a= 1/2 b X h

4 0

2 years ago

4 divided by 457 is what

antiseptic1488 [7]

The answer to your question will be 114.25

4 0

2 years ago

Read 2 more answers

The explicit rule for a sequence is an=5(−2)^n−1

Murrr4er [49]

Answer:

3) $a_n=-2a_{n-1}$ , $a_1=5$

Step-by-step explanation:

Given that the explicit rule for a sequence is $a_n=5(-2)^{n-1}$ .

Now we need to find about what is the recursive rule for the sequence and match with the given choices to find the correct choice.

1) $a_n=-2a_{n+1}$ , $a_1=5$

2) $a_n=-5a_{n+1}$ , $a_1=2$

3) $a_n=-2a_{n-1}$ , $a_1=5$

4) $a_n=-5a_{n-1}$ , $a_1=2$

Plug n=1 into given formula to get first term

$a_n=5(-2)^{n-1}$

$a_1=5(-2)^{1-1}=5(-2)^{0}=5(1)=5$

base of the exponent part is (-2) so that means we need to multiply -2 to the previous term to get nth term

Hence correct choice is: 3) $a_n=-2a_{n-1}$ , $a_1=5$

7 0

2 years ago

Write this ratio as a fraction in simplest form without any units. 28 quarts to 9 gallons You can use the table below to help co

jolli1 [7]

Answer:

7/9

Step-by-step explanation:

In order to write the fraction without any units (as a pure number), we must have units in the numerator and denominator that are the same. Then the units cancel.

<h3>Convert to gallons</h3>

We are given the conversion ...

4 quarts = 1 gallon

Multiplying by 7, we see ...

28 quarts = 7 gallons

<h3>Ratio</h3>

This lets us write the desired fraction as ...

(28 quarts)/(9 gallons) = (7 gallons)/(9 gallons) = 7/9

The ratio in simplest form is 7/9.

4 0

1 year ago

-----40 POINTS--------

andrey2020 [161]

Proof

Provide the missing reasons for the proof of part of the triangle midsegment theorem.

Given: K is the midpoint of MJ.

L is the midpoint of NJ.

Prove: MN = 2KL

The complete answer is attached in the diagram below.

The complete answer for the missing reasons is attached below in the diagram.

Please check the figure.

Keywords: statement, proof, reason

Learn more about statement, reason and proof from brainly.com/question/11081915

#learnwithBrainly

6 0

3 years ago

Read 2 more answers