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3 years ago

Solve the equation x^3 + 2x^2 - 11x -12 = 0

Mathematics

1 answer:

vagabundo [1.1K]3 years ago

4 0

Answer: there are 4 solutions

x = -2

x = -1/2 = -0.500

x =(3-√5)/2= 0.382

x =(3+√5)/2= 2.618

Step-by-step explanation:

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0.3(4-x)=x-1.4 how do you solve this problem?

tresset_1 [31]

Answer:

x = 2.

Step-by-step explanation:

Solve for x:

0.3 (4 - x) = x - 1.4

Expand out terms of the left hand side:

1.2 - 0.3 x = x - 1.4

Subtract x from both sides:

1.2 + (-0.3 x - x) = (x - x) - 1.4

-0.3 x - x = -1.3 x:

-1.3 x + 1.2 = (x - x) - 1.4

x - x = 0:

1.2 - 1.3 x = -1.4

Subtract 1.2` from both sides:

(1.2 - 1.2) - 1.3 x = -1.2 - 1.4

1.2 - 1.2 = 0:

-1.3 x = -1.2 - 1.4

-1.2 - 1.4 = -2.6:

-1.3 x = -2.6

Divide both sides of -1.3 x = -2.6 by -1.3:

(-1.3 x)/(-1.3) = (-2.6)/(-1.3)

(-1.3)/(-1.3) = 1:

x = (-2.6)/(-1.3)

(-2.6)/(-1.3) = 2.:

Answer: x = 2.

4 0

2 years ago

If John makes $20 an hour, how long will it take him to make $140?

Len [333]

For 1 hour, money = $20
For $140, it would be: 140/20 = 7 hours.

So, option C is your final answer.

Hope this helps!

4 0

3 years ago

I NEED HELP ASAP!!!!!

zavuch27 [327]

√y

Step-by-step explanation:

The question given is;

$\frac{y^{\frac{3}{4} } }{y^{\frac{1}{2} } }$

This can be written as;

$y^{\frac{3}{4} } /y^{\frac{1}{2} }$

Apply law indices where you divide same base, subtract the powers

$y^{\frac{3}{4} -\frac{1}{2} } \\\\\\y^{\frac{1}{2} } \\\\\\\sqrt{y}$

Learn More

Indices: brainly.com/question/12685658

Keyword : rational exponents,radical expressions,integer

#learnwithbrainly

3 0

3 years ago

How many times larger than 2x10^3 is 6x10^6?

Zielflug [23.3K]

Answer: 5,998,000

Step-by-step explanation:

2x10^3= 2,000

6x10^6= 6,000,000

In translation, Use 1 x The Initial SIG FIGS, or first numbers. 10x10 is 100, and notice how 10 and 10 have 2 zeros, so 1x1 = 1 +00 is a way to construct the number.

In this case, the 10^x, the x can represent the number of zeros after our first value.

So, 6 + six zeros, or 6,000,000

and, 2 + 3 zeros, or 2,000

To find the difference, subtract the numbers from eachother and extract the absolute value, (meaning the final answer won't be negative).

So, 6,000,000 - 2,000 = 5,998,000, which is the answer to the prompt!

Hope this Helped!

3 0

2 years ago

Describe how you can use the information in a table showing a linear relationship to find the slope and y-intercept for the equa

maks197457 [2]

If you have a table that tells you the (x,y) or coordinates on a graph you can take those coordinates and insert them into the equation y=mx=b. this is the equation to find the slope of a line. If you solve for b in the equation you will have the y intercept. the mx would be the slope.

3 0

3 years ago