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3 years ago

Marking brainlest answer

Mathematics

1 answer:

sergeinik [125]3 years ago

8 0

The answer is yes, every 5 dollars there is an extra 0.35$ tax so it’s a straight line which means that it is proportional

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A string is tied to the top of a plant to keep it stabilized. The plant is 5 feet tall and the string is connected to the ground

Rasek [7]

R = √(2² + 5²) = √29 = 5 and change. Simple Pythagorean calc. Draw a picture and you will see it.

4 0

3 years ago

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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

4 years ago

Solve for x. 4(5x−20)=−20 Enter your answer in the box. x =?

MrRissso [65]

Answer:

4(5x-20)=-20 should be x=3

6 0

3 years ago

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The price of Stock A at 9 A.M. was $14.83. Since then, the price has been increasing at the rate of $0.12 each hour. At noon

BARSIC [14]

Answer:

0.5 hours

Step-by-step explanation:

Let the x be the number of hours after noon.

We have the following equation:

14.83 + 0.12(x + 3) = 15.33 - 0.15x
14.83 + 0.12x + 0.36 = 15.33 - 0.15x
0.12x + 0.15x = 15.33 - 15.19
0.27x = 0.14
x = 0.14/0.27
x ≈ 0.5

5 0

3 years ago

85% of 920 and I would like to know how to do it.

Darya [45]

85% of 920
85% * 920
85/100 * 920
0.85 * 920
doing work . . .
782
Answer : 782

*Hope that helps :)*

7 0

3 years ago

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