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jenyasd209 [6]
3 years ago
9

3(x-4) = 2(-2x + 1)this is confusing me​

Mathematics
1 answer:
nata0808 [166]3 years ago
5 0

Answer:

x = 2

Step-by-step explanation:

<em>Distribute</em>

3 (−4) = 2 (−2+1)

3 − 12 = 2 (-2x +1)

<em>Distrubute again</em>

3x - 12 = -4x + 2

<em>Add twelve to both sides of the equation</em>

<em>Simpfly</em>

3x = -4x + 14

<em>Add 4x to both sides of the equation</em>

<em>simpfly</em>

7x = 14

<em>Divide both sides of the equation by the same term</em>

<em>Simpfly</em>

x = 2

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Please help!! I have tried it on my own and I am stuck
elena55 [62]

Answer:

1. 23.59 feet

2. 32.9°

Step-by-step explanation:

1. See the diagram attached.

The man is 11 feet distance from the bottom of the tree.

And the angle of elevation from the man to the top of the tree is 65°.

Now, we need to approximate the height of the tree,

Using the trigonometry, we can write  

\tan 65^{\circ} = \frac{\textrm {Height of the Tree}}{\textrm {Base Distance}} = \frac{h}{11}

⇒ h = 11 tan 65° = 23.59 feet (Approx.) (Answer)

2. See the diagram attached.

From the given right triangle the hypotenuse is 25 feet and the base is 21 feet.

And the angle between the hypotenuse and the base is the pitch of the ram of a NASCAR turn.

Using trigonometry, we can write  

\cos \theta = \frac{\textrm {Base}}{\textrm {Hypotenuse}} = \frac{21}{25}

⇒ \theta = \cos^{-1}(\frac{21}{25}) = 32.9^{\circ} (Answer)

8 0
3 years ago
Twelve of the students in the school choir like to sing solos. These 12 students make up 24% of the choir. How many students are
DIA [1.3K]

Answer:

50 Students

Step-by-step explanation:

24% = 0.24

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4 0
3 years ago
Read 2 more answers
A/9- -4 = ?<br><br> PLEASE HELP!!
Ganezh [65]

Answer:

9 - ( - 4) \\ 9 + 4  = 13

Step-by-step explanation:

negative + negative is positive

5 0
3 years ago
Image of parabola with a maximum value at (1, 9), y-intercept at (0, 8) and x-intercepts at (2, 0) and (4, 0).
natka813 [3]

Answer:

  (a)  4 seconds

Step-by-step explanation:

The given point (4, 0) on the parabola tells you the answer to the question: the coin was in the air 4 seconds before its height is 0. It is no longer in the air at that point.

__

<em>Additional comment</em>

In order to match the rest of the problem statement, the first given x-intercept must be (-2, 0).

4 0
2 years ago
-2 3/4 ÷ -1/7= <br>help​
Hitman42 [59]

The answer is 19\frac{1}{4}

First you must set up the equation

-2\frac{3}{4}÷-\frac{1}{7}

First, you must make the mixed number a improper fraction

-\frac{11}{4}÷-\frac{1}{7}

Then you must divide

\frac{77}{4}

Finally, simplify

19\frac{1}{4}

3 0
3 years ago
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