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Alona [7]
3 years ago
13

What is the sum of the geometric sequence -4, 24, -144... if there are 10 terms?

Mathematics
1 answer:
grandymaker [24]3 years ago
7 0

Answer:

34552100

Step-by-step explanation:

Sum=a(r^n-1)/(r-1)=-4*((-6)^n)-1)/(-6-1)=-4*((-6)^10)-1)/(-7)=34552100

Solved by gauthmath.

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Find j. 6 + 2(3j – 2) = 4(1 + j)
Sindrei [870]

Answer:

j=1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Helppp can someone solve this please
Norma-Jean [14]

Answer:

\displaystyle x=-15

Step-by-step explanation:

<u>Solution Of A System Of Equations </u>

A system of linear equations is given as

\displaystyle \left\{\begin{matrix}ax+by=c\\ dx+ey=f\end{matrix}\right.

There are many methods to solve them. We will use the method of reduction

The given system is

\displaystyle \left\{\begin{matrix}2x+3y=45\\ x+y=10\end{matrix}\right.

Multiplying the second equation by -3

\displaystyle \left\{\begin{matrix}2x+3y=45\\ -3x-3y=-30\end{matrix}\right.

Adding the resulting equations

\displaystyle -x=15

\displaystyle x=-15

5 0
3 years ago
How would you show a rate of change of 3.5 meters per minute on a graph name some of the points
olga2289 [7]
Y=3.5x
Pts are (1,3.5),(2,7),(3,10.5)
8 0
3 years ago
What is 3 1/8 - 1 7/8
Gekata [30.6K]

Answer:

Exact Form:  5 /4

Decimal Form:  1.25

Mixed Number Form:

    1

1     -----

    4

(I put it in different forms because you did not specify how you wanted your answer)

Please mark me brainliest if this helped (I need It)

3 0
3 years ago
NEED HELP..... Select the polynomial that is a perfect square trinomial. 36x^2 − 4x + 16 16x^2 − 8x + 36 25x^2 + 9x + 4 4x^2 + 2
Iteru [2.4K]
<h3>Answer: Choice D.  4x^2 + 20x + 25</h3>

===============================================

Explanation:

Perfect square trinomials are in the form (a+b)^2 = a^2+2ab+b^2

So the first and last terms must be perfect squares. The middle term is twice that of the square roots of each first and last term.

Choice D fits the description because 4x^2 = (2x)^2 is the first term, so a = 2x and 25 = 5^2 is the last term meaning b = 5. Note how 2ab = 2*2x*5 = 20x is the middle term.

-------------

(a+b)^2 = a^2+2ab+b^2

(2x+5)^2 = (2x)^2+2*2x*5+5^2

(2x+5)^2 = 4x^2 + 20x + 25

8 0
3 years ago
Read 2 more answers
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