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3 years ago

Find the largest prime divisor of 76^2 − 1.

Mathematics

1 answer:

saveliy_v [14]3 years ago

3 0

Answer:

Step-by-step explanation:

This is a difference of squares and therefore can be written as (76-1)(76+1)=(75)(77).

So lets look at the factors....

75=3(25)=3(5)(5)

77=7(11)

The biggest prime factor is therefore 11.

Identities used:

Difference of squares a^2-b^2=(a-b)(a+b)

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What is the area of the trapezoid? 6 in. 9 in. 17 in. 12 in. square inches

slamgirl [31]

Answer:

Step-by-step explanation:

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The area in square centimeters is 68.8.

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3 years ago

A data analyst has spreadsheets numbered

algol [13]

Answer:

$\frac{2}{9}$

Step-by-step explanation:

${\textrm}{Total number of objects here} = 9$

(2 spreadsheets, 3 databases and 4 presentations,

${\textrm}({Total} = 2+3+4 = 9)$

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2 years ago

Mayerlin read 28 pages in of an hour. At what rate, in pages per hour, did she read?

strojnjashka [21]

Answer:

28 pages per hour

Step-by-step explanation:

It says "Mayerlin read 28 pages in of an hour"

6 0

2 years ago

10 over 15 in simplest form

77julia77 [94]

The answer is 2/3

10 / 5 = 2
15 / 5 = 3
= 2/3

7 0

2 years ago

Read 2 more answers

Solve the system of equations. - 3x + 2y = 56 - 5 - 2y = 24

Oduvanchick [21]

Awnser

y=13

Step-by-step explanation:

-3x+2y=56

-5x-2y=24

so first we want to get rid of one variable, in this example we dont need to multiply because the y's cancel out

so we have

-8x=80

x=-10

now plug in x into an original equation

-3(-10)+2y=56

2y=26

y=13

hope that helps

4 0

3 years ago

Read 2 more answers