MATHEMATICS MIDDLE SCHOOL

What are the zeroes of the polynomial equation?

f(x) = x^2+9x+20

Answers

Answer 1
Answer: zeroes are when f(x)=0
0=x^2+9x+20
factor
0=(x+4)(x+5)
set each to zero
x+4=0
x=-4
x+5=0
x=-5

zeroes are f(-5) and f(-4)
Answer 2
Answer: x^2+9x+20=0\n x^2+4x+5x+20=0\n x(x+4)+5(x+4)=0\n (x+5)(x+4)=0\n x=-5 \vee x=-4

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Which one is smallest to largest
0,5,-3,-7

Answers


-7, -3, 0 and then 5 would be the order from least to greatest.
-7 , -3 , 0 , 5 is the order from least to greatest

How can u figure out this problem?

Answers

First do the one in parenthesis, find out the exponent, and get a calculator or use your head to solve the rest of the problem.
according to bidmas we do the brackets first 7-5=2
then we use the index to make it 8
now we do multiplication so 4x8=32
and lastly 69-32=37

hope this helps

Ms brown divided her class into equal groups two eighths of 48 students went to math how many students went to math

Answers


12 students went to math because 1/8 would be 6 and you would just add another eighth, which would be 12.
Well to answer this question you need to divide 48 by 8, and then multiply that answer by 2.
48/8=6 6*2=12

Sam has 128 marbles how many hundreds are in this number

Answers

1
Written out, there are one-hundred and twenty-eight marbles. When written out, you can see that there is only 1 hundred in this number. Therefore the answer is 1

Which linear inequality is shown on the graph?A) y > −2x − 3
B) y < −2x − 3
C) y ≤ −2x − 3
D) y ≥ −2x − 3

Answers

the answer is A cause it's an inequality so not equal) and for it to be linear the y has to be bigger so it would be A.

Does the equation represent a direct variation? If so, find the constant of variation.4x -5y = 0

a. yes; k = -5 b. no c. yes; k = 4/5 d. yes; k = - 4

Answers

Answer:

4/5

Step-by-step explanation:

4x-5y=0  

subtract 4x on both the sides  

4x-4x-5y = 0-4x  

-5y = -4x

divide by -5 on both the sides  

-5y/-5 = -4x/-5

y =( 4/5 )x  
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