MATHEMATICS MIDDLE SCHOOL

Determine whether the polynomial is a difference of squares and if it is, factor it. y^2 – 225



is a difference of squares: (y + 15)^2

is a difference of squares: (y – 15)(y + 15)

is not a difference of squares

is a difference of squares: (y – 15)^2

Answers

Answer 1
Answer: (y-15)(y+15) if you do (y+15)^2, then that'll be y^2 + 225

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Need help on This question please

Answers

9514 1404 393

Answer:

  a = 0 and b = 0

Step-by-step explanation:

For the table to represent a function, no value of x can be repeated. That is, the value of b must not be 1, 3, 5, or 7. This eliminates the last three answer choices, leaving only ...

  a = 0 and b = 0

__

The value of 'a' can be anything without affecting whether or not the table is a function. Only the value of 'b' matters.

Lexi 's bulletin board is 40 centimeters wide. Each of her ribbons is 4 centimeters wide, and her photos are 12 centimeters wide. What combinations of ribbons and photos will fit side by side with no overlap on Lexi 's bulletin board ?

Answers

the combination that will fit best best side by side with no overlap on lexi's bulletin board is photo, 2 ribbons , photo, 2 ribbons 
photo, 2 ribbons, photo, 2 ribbons

Suppose the population ofthe united states is about 230 million.Is this number closer to ten to the seventh power or ten to the eighth power explain your reasening

Answers

10^ 7 = 10,000,000 which is 10 million
10^ 8 is 100 million 
10^8 is closer, it is only 130 million away while 10^7 is 220 million away

Find three consecutive even integers such that the sum of the smallest to the largest 36

Answers


If they were all the same integer, then each one would be
1/3 of 36, and you would have

                                           12  +  12  +  12  =  36 .

But you don't want them to all be the same number.  You
want them to be three consecutive even numbers.

Fine !  Take 2 away from the first 12, and glue it onto the last 12 .
Their sum doesn't change, but now you have

                                             10  +  12  +  14  =  36 .
First, I would set up an equation (assuming 36 is the sum of all 3 numbers). 

x+(x+2)+(x+4)=36
               3x+6=36
                   -6   -6
                   3x=30
                   ---   ---
                   3     3
                   x=10

Now, we just plug in the numbers to find the consecutive integers
10+(10+2)+(10+4)
10+12+14

So your 3 consecutive even integers are 10,12 and 14

What is 1/5 of 15 pennies

Answers

15/5 = 3 so 3 pennies
you divide across , it menas 15/5, and the answer you multiply it by 1...
1/5 of 15= 1(3)= 3

Please help me on this question

Answers

cool, this is what I just took


a1=first term
since it starts with -3, a1=3
sub
an=-3r^(n-1)
common ratio is what must be multiplied to get next term
-3 times what is -6
answer is 2
r=2
a_(n)=-3(2^(n-1))  is equaiton (first option)
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