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NikAS [45]
3 years ago
9

Simplify x + 8x - 3x

Mathematics
1 answer:
malfutka [58]3 years ago
5 0

Answer:

6x

Step-by-step explanation:

BODMAS

8x + x  = 9x

9x - 3x = 6x

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If 2a+3b=12 and ab=6 find the value of 8a^3+27b^3
Alex17521 [72]
<span>A) 2a + 3b = 12
B) ab = 6 solving for a
B) a = 6 / b then we substitute this into equation A)
</span><span>A) 12 / b + 3b = 12  </span><span>multiplying this by "b"
A) 12 + 3b^2 = 12b
A) 3b^2 -12b +12= 0 dividing by "3"
A) b^2 -4b + 4 = 0
Factoring
(b-2) * (b-2) = 0
b = 2
Since b = 2 then a = 3

</span>NOW, we put these numbers into:
<span>8a^3 +27b^3 </span>
8*3*3*3 + 27*2*2*2
216 + 216
The answer is 512


6 0
3 years ago
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Given f(x) and g(x) = f(x + k), use the graph to determine the value of k.
dedylja [7]

g(x) is basically transformed f(x). First, let's focus on f(x) graph. Notice how the graph has slope of 1 and intersect y-axis at (0,0).

Which means that our equation for f(x) is:

\large{f(x) = x}

Now then we focus on g(x). g(x) is f(x+k). That means if f(x) = x then f(x+k) would mean substitute x = x+k in the equation.

\large{f(x + k) = x + k }\\  \large{g(x) = x + k}

Next, we want to find the value of k. In the slope-intercept form or y = mx+b where m = slope and b = y-intercept. Notice the g(x) graph and see that the graph intersects y-axis at (0,4). Therefore k = y-intercept = 4.

\large{g(x) = x + 4}

Answer

  • g(x) = x+4
  • Therefore the value of k is 4.
3 0
3 years ago
In one class ,1/6 of the students raked leaves while the rest picked up trash on the playground . what fraction of the students
bixtya [17]
You can do 1-1/6 (1 represents the whole class)

6/6-1/6
=5/6
4 0
3 years ago
45. Homer’s car has run out of gasoline. He walks 12 km west and then 5 km south looking for a gasoline station. If he is now h
yan [13]

Answer:

13

Step-by-step explanation:

use pythagorean theorem

8 0
3 years ago
Read 2 more answers
50 POINTS!!PLZ HELP ASAP!!
AlexFokin [52]

Answer: Solution for 6-8x=-5x+6 equation:

6-8x=-5x+6

We move all terms to the left:

6-8x-(-5x+6)=0

We get rid of parentheses

-8x+5x-6+6=0

We add all the numbers together, and all the variables

-3x=0

x=0/-3

x=0

Step-by-step explanation:

3 0
3 years ago
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