MATHEMATICS MIDDLE SCHOOL

Approximate the real zeros of f(x)= x^2 +3x+2 to the nearest tentha. 2, 1
b. 1, 0
c. 0, -1
d. -2, -1 ​

Answers

Answer 1
Answer: Dghfrdcghytxcgy the answer is D
Answer 2
Answer: x = -1,-2
Set the function equal to 0 then solve for x.

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What is the solution to the equation?12y + 6 = –18 A. y=-2 B. y=-1 C. y=1 D. y=2

2/3x - 9= 3/4
Find x

1/5x + 8= 3/4

Find x

Answers

(2)/(3)x-9=(3)/(4)\ \ \ \ |multiply\ both\ sides\ by\ LCM(3;4)=12\n\n12\cdot(2)/(3)x-12\cdot9=12\cdot(3)/(4)\n\n4\cdot2x-108=3\cdot3\n\n8x-108=9\ \ \ \ |add\ 108\ to\ both\ sides\n\n8x=117\ \ \ \ |diviede\ both\ sides\ by\ 8\n\nx=(117)/(8)\n\n\boxed{x=14(5)/(8)}



(1)/(5)x+8=(3)/(4)\ \ |other\ method\ like\ first\ . . . . |subtract\ 8\ from\ both\ sides\n\n(1)/(5)x=(3)/(4)-8\n\n(1)/(5)x=(3)/(4)-(4\cdot8)/(4)\n\n(1)/(5)x=(3)/(4)-(32)/(4)\n\n(1)/(5)x=-(29)/(4)\ \ \ \ |divide\ both\ sides\ by\ (1)/(5)\to(multiply\ both\ sides\ by\ 5)\n\nx=-(29)/(4)\cdot(5)/(1)\n\nx=-(145)/(4)\n\n\boxed{x=-36(1)/(4)}

Which three ordered pairs complete the table to give solutions of the equation y = –6x?  A.(–2, 12), (0,0), and (2, –12)  
B.(–2, 12), (0,–6), and (2, –12)  
C.(–2, –12), (0,0), and (2, 12) 
 D.(–2, –12), (0,–6), and (2, 12)

Answers

look\ at\ the\ picture\n\nAnswer:A

Fill in the blank.51+7=____+51

Answers

51+7=7+51
the answer is 7

What is the value of x?1. 6( -3 - x) - 2x = 14
x=

2. 2/7x + 6 + 17x = 18
x=

Answers

1) expand the brackets 
6(-3 - x) - 2x = 14
-18 - 6x - 2x = 14
simplify
-18 - 8x = 14
then add 18 to both sides to get the x's on there own
-8x = 32
then divide by -8
x = 32/-8
x = -4

2) multiply everything by 7x
2 + (6 x 7x) + ( 17x × 7x) = 18 x 7x
2 + 42x + 119x^2 = 126x
put everything on one side
119x^2 - 84x + 2 = 0
then use quadratic equation to solve

x = 0.024671849 or 0.6812105039

 

What digit is in the hundredths place in 6.589

Answers

8 is in the hundredths place

tanner collected 360 cans and bottles, this was 40% of what Reggie collected, how many cans and bottles did Reggie collect

Answers

360x.6+360=576
I got .6 because 40% would be .4 and 40+60=100
So Riggie collected 576 cans and bottles


Tanner = 40% * Reggie;

Reggie = Tanner : 40%;

Reggie = 360 : 40/100 = 360 * 100/40 = 900 bottles
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