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ikadub [295]
3 years ago
7

I need the answer to 6x - 9x+ 7= -1

Mathematics
2 answers:
Svetllana [295]3 years ago
6 0

Answer:

x = 8/3 or 2.67

Step-by-step explanation:

6x - 9x + 7 = -1

6x - 9x = -3x

-3x + 7 = -1

       -7    -7

-3x = -8

/-3    /-3

<u>x = 8/3</u> or <u>2.67</u>

iogann1982 [59]3 years ago
5 0

Answer:

x = -8/3

Step-by-step explanation:

So first let's simplify the expression. Grouping together like terms gives:

-3x + 7 = -1

Subtracting 7 from both sides gives

-3x = -8

Meaning x = -8/3

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PLEASE HELP...
Katena32 [7]

Answer:

26.2655 miles

Step-by-step explanation:

Whenever possible, draw a diagram.  I've attached a picture of the balloon and the lines of depression (not drawn to scale, of course).

As you can see, the angles of depression form alternate interior angles with the ground (angles of elevation).  So these angles are also 13° and 39°.

We can use the tangents of these angles to find the base lengths of the two triangles that are formed.

tan 13° = 4 / a

a = 4 / tan 13°

tan 39° = 4 / b

b = 4 / tan 39°

So the total distance is:

a + b

= 4 / tan 13° + 4 / tan 39°

≈ 22.2655

8 0
3 years ago
Use the graph of the line shown.
Paladinen [302]

Answer:

that is the answer to letter A y=3/10+3

That is the answer to letter B 3

7 0
3 years ago
Write a matrix to represent the system of equations.
ioda

Answer:

7   -1   6  |  -8

7  -5   7   |  1

0    1    -4 | -5

Step-by-step explanation:

Note that there are four columns in this system, representing the variables x, y and z and constants.  So the given matrix pattern is appropriate:  It has three columns for the coefficients of x, y and z and one column for the constants.

We need only identify the coefficients and transfer them into the appropriate boxes of the matrix pattern.

We get:

7   -1   6   -8

7  -5   7     1

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7 0
3 years ago
Read 2 more answers
Factor: x^2 - 8x - 9<br><br>WHAT IS IT PLEASE HELP ME MY HEAD HURTS<br>WILL MARK AS BRAINLEST
marissa [1.9K]

Answer:(x+1)(x-9)

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
What is the area of the figure to the nearest tenth?
pantera1 [17]
Area of a sector (s) = radius (r) · θ (in radians)

First, convert 168° into radians using the proportion π = 180°
\frac{ \pi}{180} =  \frac{x}{168}
\frac{168\pi }{180} = x
\frac{14 \pi }{15} = x

Next, plug in x for θ
s = r · θ
   = 8 · \frac{14 \pi }{15}
   = \frac{112 \pi }{15}
   = 23.457
   ≈ 24.0

Answer: C

3 0
3 years ago
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