3 years ago

Find the common ratlo for the following sequence.

Mathematics

1 answer:

worty [1.4K]3 years ago

3 0

The answer is D to the question

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Solve the system of equations.<br> - 52 + 2y = 9<br> y = 70

ludmilkaskok [199]

Agreed, I had to take a test on it and y did equal 70

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4 years ago

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in a AP the first term is 8,nth term is 33 and sum to first n terms is 123.Find n and common difference

allsm [11]

I believe there is no such AP...

Recursively, this sequence is supposed to be given by

$\begin{cases}a_1=8\\a_k=a_{k-1}+d&\text{for }k>1\end{cases}$

so that

$a_k=a_{k-1}+d=a_{k-2}+2d=\cdots=a_1+(k-1)d$

$a_n=a_1+(n-1)d$

$33=8+(n-1)d$

$21=(n-1)d$

$n$ has to be an integer, which means there are 4 possible cases.

Case 1: $n-1=1$ and $d=21$ . But

$\displaystyle\sum_{k=1}^2(8+21(k-1))=37\neq123$

Case 2: $n-1=21$ and $d=1$ . But

$\displaystyle\sum_{k=1}^{22}(8+1(k-1))=407\neq123$

Case 3: $n-1=3$ and $d=7$ . But

$\displaystyle\sum_{k=1}^4(8+7(k-1))=74\neq123$

Case 4: $n-1=7$ and $d=3$ . But

$\displaystyle\sum_{k=1}^8(8+3(k-1))=148\neq123$

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3 years ago

Need help ASAP! Please help with the slope to this question m= <br> B=

Inessa [10]

y=mx+b

therefore m = 1/2

and b = -6

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3 years ago

(q^4)^z= q^12 find the value of z

juin [17]

Answer:

z = 3

Step-by-step explanation:

we use the method

(x^a)^b = x^(a*b)

(q^4)^z = q^(4*z)

now

4*z = 12

z = 12 / 4

z = 3

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Rasek [7]

Answer:

379.984 meters per second.

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