3 years ago

Which expressions are differences of squares? Select each correct answer.

Mathematics

2 answers:

Temka [501]3 years ago

8 0

Answer:

First two are difference in squares.

81=9^2
225=15^2

Alex_Xolod [135]3 years ago

7 0

Answer:

The expression which denotes the differences of squares is

n² - 225

As here 225 is a square of 15.

Hope it will help :)❤

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3) A local school district has 4512 students this year. The student population is declining by 2.5% per year. How many students

il63 [147K]

Answer:

Number of students(n1)= 4,402

Step-by-step explanation:

Giving the following information:

Number of students= 4,512

Declining rate= 2.5%

<u>To calculate the number of students next year, we need to use the following formula:</u>

Number of students (n+x)= number of students (n0) / [(1+declining rate)^(n+x)

x= number of years

Number of students(n1)= 4,512/1.025

Number of students(n1)= 4,402

5 0

3 years ago

Can somebody help me pls!!!

irga5000 [103]

Answer:i dont know can we help you

Step-by-step explanation:

5 0

3 years ago

Is this the correct answer? if not, what is it?

sergiy2304 [10]

Answer:

B. 1:2800

Step-by-step explanation:

448 / .16 = 2800

1:2800

Feel free to let me know if you need more help! :)

6 0

3 years ago

Solve the following equation for the variable a 2a+b=c-4d

Natasha_Volkova [10]

2a+b=c-4d
a= c-4d-b/2

6 0

3 years ago

Read 2 more answers

PLEASE HELP !!!!!!!!!! Jonas used linear combination to solve the system of equations shown. He did so by multiplying the first

OverLord2011 [107]

This question is worded slightly strangely but I believe I understand it.
To eliminate x, multiply the second equation by 8, so that it becomes 4x + .8y= 96
Then you can subtract 4x on the top by 4x on the bottom to eliminate it.

7 0

3 years ago