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2 years ago

PLEASE HELP EASY 10 POINTS!!

Mathematics

1 answer:

vlada-n [284]2 years ago

6 0

Answer: 19.625

Step-by-step explanation: if u need the explanation add me

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The value of q is: A. 42. B. 39. C. 40.

saw5 [17]

Answer:

Step-by-step explanation:

Its pretty easy i did that on a test and got a 100

5 0

2 years ago

Please answer soon I need this answer very quickly for math. Thank you!

Kazeer [188]

a. First five terms: 9,13,17,21,25

b. Sum of first 25 terms = 1425

c. The given sequence is an arithmetic sequence because the common difference between two consecutive terms is same.

Further explanation:

Given

Formula of sequence

$a_n=4n+5$

1. First 5 terms:

For first 5 terms, we have to put n=1,2,...5,

So,

$For\ n=1\\a_1=4(1)+5\\=4+5\\=9\\For\ n=2\\a_2=4(2)+5\\=8+5\\=13\\For n=3\\a_3=4(3)+5\\=12+5\\=17\\For\ n=4\\a_4= 4(4)+5\\=16+5\\=21\\For\ n=5\\a_5=4(5)+5\\=20+5\\=25\\First\ 5\ terms\ are: 9,13,17,21,25$

2. Sum of first 25 terms:

For that we have to find 25th term first

$a_{25} = 4(25)+5\\=100+5\\=105$

The formula for sum is:

$S_n=\frac{n}{2}(a_1+a_n)}\\Putting\ the\ values\\S_n=\frac{25}{2}(9+105)\\=12.5(114)\\=1425$

3. Type of sequence

The given sequence is an arithmetic sequence because the common difference between two consecutive terms is same.

i.e.

$d=4$

Keywords: Arithmetic sequence, Sum of arithmetic sequence

Learn more about arithmetic sequence at:

#LearnwithBrainly

4 0

3 years ago

Peter and sai were buying presents. Their parents had given them each an allowance of $7 per week. Each of them saved their mone

Lady bird [3.3K]

They each have $42 because 7 times 6 is 42 and combined they have $84 because 42 + 42=84.

6 0

3 years ago

Read 2 more answers

The quotient of three times a number and 4 is at least -16

vladimir1956 [14]

Ok to solve this just write it out how it sounds, like so.

3x/4 $\geq$ -16

Hope this helps!=)

4 0

3 years ago

Marta recorded the temperature at 8 p.m. as 56°F and the temperature at 8 a.m. the next morning as 36°F. Marta assumed the tempe

Ksju [112]

1. Calculate how many hours passed between her temperature checks. 8 p.m to 8 a.m. is 12 hours.

2. Calculate the total change in temperature. 36 - 54 is -18, so the temperature went down by 18 degrees.

3. We are looking for degrees per hour, so we put derees(18) over hours (12) to get 18/12.

4. Calculate by dividing. The answer is 1.5 degrees per hour.

5 0

2 years ago

Read 2 more answers