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Rom4ik [11]
2 years ago
5

Which of the following systems is best suited for solving with the substitution method?

Mathematics
1 answer:
Agata [3.3K]2 years ago
3 0

answer ...

to halp you and thank you

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Find the sum of the first 6 terms of the sequence: –3, 1, 5, 9, . . .A) 45B) 42C) 48D) 25
Leni [432]

SOLUTION

From the sequence give

–3, 1, 5, 9, . . .

The first term, a = -3

The common difference, d = 4 (gotten by adding 4 to the next term).

The number of terms required n = 6.

Formula for sum of an arithmetic sequence is given by

S_n=\frac{n}{2}\lbrack2a+(n-1)d\rbrack

Substituting these values into the equation above we have

\begin{gathered} S_n=\frac{n}{2}\lbrack2a+(n-1)d\rbrack \\ S_6=\frac{6}{2}\lbrack2\times-3+(6-1)4\rbrack \\ S_6=3\lbrack-6+(5)4\rbrack \\ S_6=3\lbrack-6+20\rbrack \\ S_6=3\lbrack14\rbrack \\ S_6=42 \end{gathered}

Hence, the answer is 42, option B

3 0
1 year ago
Simplify by dividing three over five divided by negative four over nine.
Kruka [31]
If I read that right:

(3/5)/(-4/9) is equal to

(3/5)*(9/-4)

-27/20

-1 7/20
3 0
3 years ago
Read 2 more answers
Do consumers spend more on a trip to Target or​ Walmart? Suppose researchers interested in this question collected a systematic
ra1l [238]

Answer:

Step-by-step explanation:

Confidence interval for the difference between two population means is written in the form,

difference in sample means ± margin of error

The difference in sample means is the point estimate for the difference in population means. In the given scenario, the point estimate is the difference in mean amount spent by the sampled customers on a trip to Target or​ Walmart.

Since the interval was (- $15.05​,$2.95), it means that the lower limit is - $15.05 and the upper limit us $2.95.

Therefore, the 95% confidence interval is providing a range that we are 95% confident that the true difference in mean amount spent by Target customers and Walmart customers falls between - $15.05​ and $2.95

5 0
4 years ago
What do both the Senate and the House of Representatives require of people running for election?
ludmilkaskok [199]
To be apart of that state for atleast ten years is one.
5 0
3 years ago
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Is the expression 3x+2 a binomial?
Wewaii [24]

Yes, this is a polynomial, but a special form of a polynomial with just one term which is called a monomial .

7 0
3 years ago
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