3 years ago

In an arithmetic sequence, the 4th term is 18 and the 5th term is 22. What is the first term?

Mathematics

1 answer:

k0ka [10]3 years ago

6 0

Answer:

Step-by-step explanation:

THE ANSWER IS 6

PLS MARK ME AS BRAINLIEST

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First step is to distribute.
-4a^2 - 6a +2 + 3a^2 -3
Combine like terms
-a^2 -6a -1

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postnew [5]

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The miles-per-gallon rating of passenger cars is a normally distributed random variable with a mean of 33.8 mpg and a standard d

EleoNora [17]

Answer:

The probability that a randomly selected passenger car gets more than 37.3 mpg is 0.1587.

Step-by-step explanation:

Let the random variable <em>X</em> represent the miles-per-gallon rating of passenger cars.

It is provided that $X\sim N(\mu=33.8,\ \sigma^{2}=3.5^{2})$ .

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$P(X>37.3)=P(\frac{X-\mu}{\sigma}>\frac{37.3-33.8}{3.5})$

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Thus, the probability that a randomly selected passenger car gets more than 37.3 mpg is 0.1587.

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Katarina [22]

Answer:

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Step-by-step explanation:

x^-3=1/x^3

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Olegator [25]

Answer:

haha

Step-by-step explanation:

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3 years ago

In an arithmetic sequence, the 4th term is 18 and the 5th term is 22. What is the first term?​

In an arithmetic sequence, the 4th term is 18 and the 5th term is 22. What is the first term?