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wlad13 [49]
3 years ago
7

Please help me asap! Thanks in advanced guys! :)

Mathematics
2 answers:
sp2606 [1]3 years ago
6 0

Answer:

x = 17 because 8x + 20 equals 11x-31, you simplify both by subtrcting 8x from both sides to get 20 = 3x -31. Then you add 31 to both sides to get 51 = 3x. Then divide 3 from both sides and you get 17 = x

cluponka [151]3 years ago
5 0

Answer:

I think I did it wrong but I try

Step-by-step explanation:

8x+20+11x-31

-8x       -8x

20-31 =3x

+31   +31

51  =3x

17=x

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Slove for all the possible values of x. √21-4x=x-6
Alona [7]

Answer:

x=2.116

Step-by-step explanation:

\sqrt{21} -4x=x-6

4.58-4x-x=-6

-5x=-6-4.58

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x=2.116

4 0
3 years ago
In the function f(x)=6x^2-4, what is the value of f(-2)?
BartSMP [9]

In order to find the value of f(-2), you can plug -2 wherever x is.

f(x) = 6x^2 - 4

f(-2) = 6(-2)^2 - 4

f(-2) = 6(4) - 4

f(-2) = 24 - 4

f(-2) = 20

Thus, the value of f(-2) is 20. Hope this helps! If you have any other questions related to this, let me know.

4 0
2 years ago
The points (2,-5) and (5,r) lie on a line with slope 2. Find the missing coordinate r.
Andrew [12]

Answer: r = 1

Step-by-step explanation:

The slope of a line can be represented as \frac{y_2-y_1}{x_2-x_1}.  Plugging in the following values would provide you with:

\frac{(r)-(-5)}{(5)-(2)} =2

\frac{r + 5}{3}  = 2

r + 5 = 6

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Hope it helps :) and let me know if you want me to elaborate on anything.

7 0
2 years ago
Choose the graphs that indicate equations with no solution
Sholpan [36]

Answer:

A and E

Step-by-step explanation:

Given

Graphs A to E

Required

Which do not have solutions

When there are no point of intersection between lines and/or curves of a graph, then such graph has no solution.

Using the above description as a yard stick, the first (A) and the last (E) graph have no solution.

8 0
2 years ago
You make $10 on the first day, $20 on the second day, $40 on the third day, $80 on the fourth day, and so on. What is your total
Trava [24]
The answer to this question is 5,120 you have to multiply by 2
4 0
2 years ago
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