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wolverine [178]
3 years ago
12

What are the solutions of x2 = 8 - 5x?

Mathematics
1 answer:
jonny [76]3 years ago
5 0

Answer:

That can be re-written:

x^2 + 5x -8 = 0

We use the Quadratic Formula

a=1

b = 5

c = -8

x = [-b +- sq root (b^2 - 4ac) ] / 2a

x = [-5 +- sq root (25 - - 32)] / 2

x1 = [-5 + sq root (57)] / 2

x1 = 1.27491722

x2 = [-5 - sq root (57)] / 2

x2 = -6.2749172176

Step-by-step explanation:

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Part B
SVEN [57.7K]

Answer:

$500

Step-by-step explanation:

substitute the values for X & S in the equation from part A:

y=20x + 0.15s

x=($20x25) + (0.15x$0)

= $500

3 0
3 years ago
The vértices of a figure are given.
tatyana61 [14]

Answer:

  R''(2, 1), S''(-1, 7), T''(2, 7)

Step-by-step explanation:

Rotation 90° CCW is accomplished by the transformation ...

  (x, y) ⇒ (-y, x)

Translation 3 left and 8 up is accomplished by the transformation ...

  (x, y) ⇒ (x -3, y +8)

Together, the two transformations give ...

  (x, y) ⇒ (-y -3, x +8)

So your transformed points are ...

  R(-7, -5) ⇒ R''(-(-5)-3, -7+8) = R''(2, 1)

  S(-1, -2) ⇒ S''(-(-2)-3), -1+8) = S''(-1, 7)

  T(-1, -5) ⇒ T''(-(-5)-3, -1+8) = T''(2, 7)

8 0
3 years ago
PLEASE HELP ME WITH THIS QUESTION <br> 6
nata0808 [166]

Answer:

45

Step-by-step explanation:

Assuming this is a trapezoid,

\frac{29+WZ}{2}=37 \\ \\ 29+WZ=74 \\ \\ WZ=45

5 0
2 years ago
Which unit of measure would be appropriate for the area of a pictu - that is
sp2606 [1]

Answer:

Can you please look at your question and tell me the whole thing. pls and ty :)

Step-by-step explanation:

5 0
4 years ago
What is the slope?
ExtremeBDS [4]
Slope = 4 but I need to get to 20 characters to reply to this question. Have a nice day
6 0
3 years ago
Read 2 more answers
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