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iogann1982 [59]
3 years ago
8

Is this the correct answer?

Mathematics
1 answer:
NeTakaya3 years ago
4 0
30kx - 6kx = 8

24kx = 8 /(÷8)

3kx = 1

x = 1/3k
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Find the value of x.
7nadin3 [17]

Step-by-step explanation:

x=20

x aris is stright .right?

5 0
3 years ago
Expand and simplify (2x + 3) (x + 7)
RUDIKE [14]

Answer:

2x^{2} +17x+21

Step-by-step explanation:

multiply the 2x by x and 7 and then multiply 3 by x and 7. you will get 2x^{2}+14x+3x+21. combine like terms so add 14x to 3x and thats the only like trerms in the equation. so 2x^2+17x+21

5 0
1 year ago
(05.08) Solve for x: 2 over quantity x minus 2 plus 7 over quantity x squared minus 4 equals 5 over x. (2 points) x = negative 4
Oxana [17]

Answer:

Step-by-step explanation:

The best way to do this is to use your LCM and eliminate the fractions.  To find the LCM you have to use all the denominators as a multiplier so the denominator in each term cancels out.  We will first factor the x-squared term to simplify and see what 2 factors are hidden there.

x^2-4 factors to (x + 2)(x - 2).  That means that our 3 denominators that make up our LCM are x(x+2)(x-2).  We will mulitply that in to each term in our rational equation, canceling out the denominators where applicable.

x(x+2)(x-2)[\frac{2}{(x-2)}+\frac{7}{(x-2)(x+2)}=\frac{5}{x}]

In the first term, the (x-2) will cancel leaving us with

x(x+2)[2] which simplifies to

x^2+2x[2]

In the second term, the (x+2)(x-2) cancels out leaving us with

x[7].

In the last term, the x cancels out leaving us with

(x+2)(x-2)[5] which simplifies to

x^2-4[5]

Now we will distribute through each cancellation:

2x²+4x;

7x;

5x²-20

Putting them all together we have

2x² + 4x + 7x = 5x² - 20

Combining like terms gives us a quadratic:

3x² - 11x - 20 = 0

Factor that however you find it easiest to factor quadratics and get that

x = 5 and x = -4/3

4 0
3 years ago
Evaluate and simplify each square root(simplest form). To create a square root symbol type sqrtt.
Sav [38]
All this is, is plugging in numbers. Then taking the square root of it. The first one would be the square root of 6 squared - 4(5)(-3). That would simplify to the square root of 36+60. Then add the numbers to get the square root of 96. The square root of 96 is about 9.798. I hope that helped. If you still need help with the second one or with the rest of the formula (if there is one) just ask!
5 0
3 years ago
8. You throw a ball downward 40 feet per second from a building
kumpel [21]

Answer:

6.16?

Step-by-step explanation:

Not completely sure but if you divide 256 by 40 you get six remainder 16 not sure if I did it right so sorry if I am wrong

5 0
3 years ago
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