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3 years ago

Which expression is equivalent to (x-3) (x + 5)?

Mathematics

2 answers:

Oliga [24]3 years ago

6 0

Answer:

$(x-3)(x+5) = x^2+2x-15$

$(x+1)^2-14 = x^2+2x-13 (NOT MATCHED)$ $(x+1)^2-16 = x^2+2x-15 (MATCHED)$

$Answer - 2nd option$

2nd option

Step-by-step explanation:

pshichka [43]3 years ago

3 0

Answer:

B) cause i looked it up and im sure.

Step-by-step explanation:

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jekas [21]

Answer:

n = 18

Step-by-step explanation:

The formula for angle sum of a polygon is S = 180 (n - 2), where S is the sum and n is the sides.

We are given that the sum is 2880, and are trying to find n.

Simply sub in S = 2880,

2880 = 180 (n - 2)

Divide by 180 to get (n - 2) by themselves on the right side,

16 = n - 2

Now add 2 to the other side to get n by itself

18 = n

n = 18

Hope this helped!! Please feel free to ask me if there's anything you don't understand from this working

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4 years ago

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Urgent please help! I rlly need this answer before 9:00 pm!

Alja [10]

Answer:

He can buy 6 packs of cards and he still gets the free poster.

Step-by-step explanation:

39-3 = 36

36 divided by 6= 6

He get 6 packs of cards and 1 action figure. ANd spends exactly 39 dollars.

7 0

3 years ago

I really need help on this. Please help.

jok3333 [9.3K]

Your doing the Distributive Property. So in this equation your distributing the first 2 on the outside of the parenthesis, so this first section of your problem after distributing is 6n+8. Next distribute the -2 to the 2n and 5. DON'T FORGET THE NEGATIVE. So it would look like 6n+8-4n-10. Then combine like-terms. so 6n-4n = 2n. Then 8-10=-2. Your final answer should be

2n-2.
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3 years ago

He was a Jamaican-American Civil Rights activist who was part of the "Back to Africa" movement of the early 20th century and fou

Llana [10]

Marcus Garvey was <span>a Jamaican-American Civil Rights activist who was part of the "Back to Africa" movement of the early 20th century and founded the "Black Star Steamship Company" for this purpose.
He was also pro Pan-African movement which proposed the idea that all people of African descent should unite in order to improve the state of affairs in Africa. </span>

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3 years ago

Find the probability that a randomly selected multiple birth for women 15-54 years old involved a mother who was at least 40 ye

Nikolay [14]

Answer:3/8

Step-by-step explanation:

Total number of women with ages from 15 to 54years (15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54)= 40

Total number of women with age 40 years and above = 15

Probability of picking a mother of age greater than 40 = 15/40 which is equal to 3/8.

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3 years ago

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