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ipn [44]
1 year ago
11

1. The 4th, 5th, and 6th terms of an arithmetic sequence are 19, 23, and 27 respectively. What is the first

Mathematics
1 answer:
babymother [125]1 year ago
8 0

Answer: 7

Step-by-step explanation: The only pattern in this sequence that I can see is addition by 4. Therefore, the 3rd term is 15, the 2nd is 11, the 1st is 7.

Please consider Brainliest.

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Which statement about sound is true because it is a mechanical wave?
maw [93]

Answer:

It must travel through a medium

Step-by-step explanation: Because I said so >:(

4 0
3 years ago
Read 2 more answers
According to the U.S. Department of Education. Institute of Education Sciences, National Center for Education Statistics 1,026,0
Andreyy89

Answer:

The correct option is C) 21.1 and 0.68  

Step-by-step explanation:

Consider the provided information.

The mean composite score was 21.1 with a standard deviation of 4.8. The ACT composite score ranges from 1 to 36, with higher scores indicating greater achievement in high school.

Therefore μ = 21.1 and σ = 4.8

It is given that the sample of 50 students;

Thus, sample size ( n ) = 50

According to the central limit theorem,

\mu_{\bar x}=\mu\ and \ \sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}

Therefore

\mu_{\bar x}=21.1

\sigma_{\bar x}=\frac{4.8}{\sqrt{50}}

\sigma_{\bar x}=0.68

Hence, the correct option is C) 21.1 and 0.68

7 0
3 years ago
Evaluate the expression
dsp73

Answer: Heyaa!

<em>Your Answer Is...</em><em> </em>2

Step-by-step explanation:

<em>Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.</em>

<em />

Hopefully this helps <em>you!</em>

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7 0
2 years ago
An airplane leaves Los Angeles and travels five hours to New YorkCity. The return trip travels along the same route and takes si
finlep [7]

The distance of the plane flies between the two cities is 1,113.75  miles

The formula for calculating the distance travelled is expressed as:

D = vt where:

v is the speed

t is the time taken

Given the following:

v = 99mi/hr

Total time taken = 5hr + 6.25hr

Total time taken = 11.25hr

Get the required distance

Distance = 99mi/hr * 11.25hr

Distance = 1,113.75miles

Hence the distance of the plane flies between the two cities is 1,113.75  miles

learn more here: brainly.com/question/7245260

4 0
3 years ago
Please help me!! Lots of love!!
Marizza181 [45]

Answer:

D) 2

Step-by-step explanation:

write 8 in exponential form which is 2^3

now simplyfy the root which equals 2

2 is the answer.

4 0
2 years ago
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