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MissTica
3 years ago
7

Correct or incorrect?

Mathematics
1 answer:
Rama09 [41]3 years ago
8 0
It think is is correct.
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Need answer ASAP <br> *MARKING BRAINLIEST
NikAS [45]

Answer:

an = 4n +5

Step-by-step explanation:

First we need to find a common difference

d = a2-a1 = 13-9 = 4

The formula for an

an =a1+d(n-1)

an = 9 + 4(n-1)

Distributing

an = 9+4n-4

Combine like terms

an = 4n +5

8 0
3 years ago
PLZ HELP ASAP ILL GIVE BRAINLEST
lianna [129]

Answer:

2.25

Step-by-step explanation:

-9/-4= 2.25

3 0
2 years ago
Read 2 more answers
Which one of the following statements is true of perpendicular lines? A. They intersect to form an obtuse angle. B. They interse
quester [9]
They intersect at one point
6 0
3 years ago
Read 2 more answers
2x^2-13x-24 factor the polynomial<br><br> Explain please
vovangra [49]

Answer:

(x - 8)(2x + 3)

Step-by-step explanation:

To factor a polynomial of the form

ax² + bx + c,

follow these steps:

1) Multiply ac together.

2) Find 2 factors of ac that add to b. Call these factors p and q.

3) Break up the middle term of the polynomial into px + qx.

4) Factor by grouping.

Now let's follow the steps above with your problem.

You are given the polynomial

2x² - 13x - 24,

so a = 2, b = -13, and c = -24

1) Find ac.ac is the product 2(-24) = -48

2) Now we need to find 2 factors of -48 that add to b, -13.

I know that 48 = 3 × 16, so if we use -16 and 3 for the two numbers, we have

-16 + 3 = -13

and -16 × 3 = -48.

3) Now we break up the middle term of the polynomial, -13x, into -16x + 3x.

The polynomial is now

2x² - 16x + 3x - 24

4) We factor the polynomial by grouping. To factor by grouping, you factor a common factor out of the first 2 terms and factor out a common factor out of the last two terms.

2x² - 16x + 3x - 24 =

= 2x(x - 8) + 3(x - 8)

We now see the common factor of x - 8, so we factor that out.

= (x - 8)(2x + 3)

Answer: (x - 8)(2x + 3)

8 0
3 years ago
Brainlyest for best answer
bazaltina [42]

Answer:

21

Step-by-step explanation:

Add all of the numbers together then divide by 5

7 0
2 years ago
Read 2 more answers
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