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2 years ago

Write down in terms of n an expression for the nth term of the following sequences 9 11 13 15 17

Mathematics

1 answer:

zvonat [6]2 years ago

5 0

Answer:

2n+7

Step-by-step explanation:

+2 +2 +2 +2

9 11 13 15 17 so we start with 2n

2 ➡ 9 = +7 6 ➡ 13 = +7

4 ➡ 11 = +7 8 ➡ 15 = +7

So the answer is 2n + 7

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Solve the system by substitution.<br> 4y =<br> 5x -10y =-50

Trava [24]

Answer:

$x = -20 ; y =-5$

Step-by-step explanation:

Eqn. 1 ----> 4y = x

Eqn. 2 ----> 5x-10y = -50

(Simplifying eqn.2 further)

$=>5(x-2y)=-50$

$=>x-2y=\frac{-50}{5} =-10$

(Substituting the value of x from eqn. 1)

$=>4y-2y=-10$

$=>2y=-10$

$=>y =\frac{-10}{2} =-5$

Now, substituting the value of y in eqn. 1 ,

$x = 4*(-5)=-20$

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2 years ago

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Contact [7]

Answer:

Step-by-step explanation:

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3 years ago

Expand : (3x+5y)²<br>please answer

alukav5142 [94]

Answer:

FOIL: $9x^2 +30xy + 25y^2$

(3x + 5y)(3x+5y)

F: 3x*3x

O: 3x*5y

I: 5y*3x

L: 5y*5y

$9x^2 +30xy + 25y^2$

Step-by-step explanation:

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3 years ago

What is the area or the figure below?

nataly862011 [7]

U have to cross out the 10 then u have those 4 5s 5x5=25 5x5=25 25+25=50.

(My answer might be wrong so wait until other ppl answer. If I got riGhT like my thing -3-)

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3 years ago

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xxMikexx [17]

1/10 of an hour (D) is correct. Hope this helped :)

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2 years ago

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