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Arte-miy333 [17]

3 years ago

6

Cooper is taking a multiple choice test with a total of 80 points available. Each question is worth exactly 4 points. What would

be Cooper's test score (out of 80) if he got 2 questions wrong? What would be his score if he got xx questions wrong?

1 answer:

VLD [36.1K]3 years ago

3 0

Answer:

80-4(2)=72; 80-4(x) if he got x wrong.

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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

$a_n=4n+5$

<u>1. First 5 terms:</u>

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

So,

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

<u>2. Sum of first 25 terms:</u>

For that we have to find 25th term first

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

The formula for sum is:

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

<u>3. Type of sequence</u>

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

Rewrite 1/3 book - 5/6 hour as a unit rate.

insens350 [35]

Answer:

2/5

Step-by-step explanation:

The answer is 2/5 as a fraction or 0.40 as a decimal. To get the answer all you have to do is 1/3÷5/6

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3 years ago

Find the GCF from the two numbers and rewrite the sum using nthe distributive property

Vadim26 [7]

Answer:

The greatest common factor is 6.

Step-by-step explanation:

Greatest common factor is 6. If you use the distributive property then the answer would be 6(4) + 6(6) or 6(4+6). Then you distribute the 6 to each digit and should get 24+36.

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3 years ago

What does 7/18 + 2/27=

victus00 [196]

The answer would be 25/54

4 0

4 years ago

Read 2 more answers

Question 4 graph on a number line

ozzi

Answer:

The third one

Step-by-step explanation:

You would first mark -2 on a graph then the circle would be open because the sign is just greater than, then the arrow would be pointing to the right, because that is the way your equation shows it

5 0

3 years ago