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Licemer1 [7]
3 years ago
6

I need help with this iready question

Mathematics
1 answer:
Ad libitum [116K]3 years ago
7 0

Answer:

64%

Step-by-step explanation:

The percent that was plastic is the plastic over the total * 100 %

percent plastic = 16/25 *100%

                          = .64 *100%

                            64%

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consider the line 4x+9y=-8find the equation of the line that is perpendicular to this line and passes through the point (-2, -2)
levacccp [35]
\begin{gathered} \text{The equation of the line is,} \\ 4x+9y=-8 \\ 9y=-4x-8 \\ y=-\frac{4}{9}x-\frac{8}{9} \\ \text{The slope is}\Rightarrow m=-\frac{4}{9} \\ perpendicular\text{ slope}\Rightarrow m^{\prime}=\frac{9}{4} \\ 1. \\ x_1=-2,y_1=-2 \\ So,\text{ the perpendicular equation of line is} \\ y-y_1=m^{\prime}(x-x_1) \\ y+2=\frac{9}{4}(x+2) \\ 4y+8=9x+18 \\ 4y=9x+10 \\ y=\frac{9}{4}x+\frac{5}{2}(\text{Ans)} \\ 2. \\ The\text{ parallel equation is,} \\ y-y_1=m(x-x_1) \\ y+2=-\frac{4}{9}(x+2) \\ 9y+18=-4x-8 \\ 9y=-4x-26 \\ y=-\frac{4}{9}x-\frac{26}{9}(\text{Ans)} \end{gathered}

8 0
1 year ago
3/4x^2+8x+20=0 factor
elena-s [515]

\frac{3}{4}  {x}^{2}  + 8x + 20 = 0
multiplied by 4
3 {x}^{2}  + 32x + 80 = 0 \\ (3x + 20)(x + 4) = 0 \\ so \: x =  -  \frac{20}{3}  \: or \: x =  - 4
6 0
3 years ago
Determine the exact value of sin 240
iren2701 [21]

simplify : the exact value of sin 240

Explanation: sin(240)=sin(60+180)=-sin60

\begin{gathered} -sin60=-\frac{\sqrt{3}}{2} \\ =-0.87 \end{gathered}

Final answer: the required vaalue of the sin 240 is -0.87

7 0
9 months ago
Three bacteria are ina dish. Each hour the number of bacteria increases by four. If at the end of the first hour there are 12 ba
Zanzabum

12+4=16 the second hour. (The first of the next three hours)

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20+4=24 the fourth hour( the last of the next three hours)

8 0
3 years ago
What value of x is in the solution set of <br> 3(x-4)&gt;5x+2?
Harrizon [31]

Answer:

=x<-7

If they're asking for work, I'd be glad to show.

5 0
2 years ago
Read 2 more answers
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