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Lemur [1.5K]
3 years ago
13

3/4x^2+8x+20=0 factor

Mathematics
1 answer:
elena-s [515]3 years ago
6 0

\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
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30 Points! please help!
SVEN [57.7K]

Answer:

18) 4 * 10 ^ -10

19) t ^ 9

Step-by-step explanation:

18. When multiplying in scientific notation, just multiply the regular numbers together and add the exponents for the tens.

So it'll be 40 * 10^-11

However, the beginning number should have the decimal right after the 4, not any place after (for example, it's 3.056, not 30.56 or 3056.)

To fix this, move the decimal place forward one space from 40. to 4.0, and add 1 to the -11 power.

So the answer is now 4 * 10^-10

19. When dividing exponents, if the base number is the same, you can divide. (Basically, you can not divide x^2 and y^3 because x and y aren't the same)

Since in this case it's t, you can divide.

Dividing exponents is simple: just subtract them.

14 - 5 = 9

so the answer is t ^ 9

3 0
4 years ago
Solve the following equation:<br> 1/3(y - 2) -5/6 (y + 1) =3/ 4(0 - 3) - 2
Evgesh-ka [11]

Answer:

11/5

Step-by-step explanation:

If you need help with more problems like this you can use m a t h w a y. (remove the spaces)  :)

8 0
3 years ago
X/6=36/24 what value of x makes this proportion true
Stolb23 [73]
Cross multiply or just multiply both sides by 24
24x/6=36
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divide both sides by 4
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4 0
3 years ago
Read 2 more answers
How do you make the colored lines short enough to make a "K"?
earnstyle [38]
Hmmm wait let me try to do it
8 0
3 years ago
What is the slope of the line y=2x+5?​
sweet [91]
Answer:

The slope is 2

Explanation:

The equation is written in y=mx+b
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Hope this helps!!
4 0
3 years ago
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