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2 years ago

In a survey of students, 60% were in high school. The percentage of the students who were not in high school was?

Mathematics

2 answers:

andre [41]2 years ago

7 0

Answer:

40%

Step-by-step explanation:

There is a total of 100%.

If you subtract the amount that are in high school (60%) from 100%, then you would get 40%. Hope this helps! :)

kolezko [41]2 years ago

4 0

Answer:

Is it 40?

Step-by-step explanation:

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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

3 years ago

Pls help. What is the appropriate congruent for these triangles

Leviafan [203]

Answer:

C. HL

Step-by-step explanation:

The diagram given shows that the hypotenuse length and the length of a leg of one right triangle is congruent to the hypotenuse and corresponding leg length of the other. Based on Hypotenus-Leg criterion, the two right triangles is proved to be congruent because it meets the criterion of HL.

5 0

2 years ago

What is the value of the expression when n=3 -2(5+n-8-3n)

Greeley [361]

-2n(5 + n - 8 - 3n)
-10n - 2n² + 16n + 6n²
4n² + 6n

7 0

2 years ago

Read 2 more answers

Help ASAP!! Will mark the brainliest

fgiga [73]

Answer:

a, c, b, a

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Which of the following is the weakest r-squared value? Which one is the strongest?

Setler [38]

Answer:

Weakest value = 0.0196

Strongest value = 0.5929

Step-by-step explanation:

Given:

Choices

0.691

-0.14

-0.24

-0.77

Computation:

0.691² = 0.477481

-0.14² = 0.0196

-0.24² = 0.0576

-0.77² = 0.5929

Weakest value = 0.0196

Strongest value = 0.5929

7 0

2 years ago