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balandron [24]
3 years ago
9

Solve the equation: -3x + 6 =39​

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
7 0

Answer:

x = -11

Step-by-step explanation:

First you should the 6 to the other side by subtracting it

-3x = 39-6

Then subtract

-3x = 33

Then we divide to get the x alone

x = 33/-3

x = -11

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The cost of attending an amusement park is $10 for children and $20 for adults. On a particular day, the attendance at the amuse
Lapatulllka [165]

Using a system of equations, it is found that 10,000 children attended the park that day.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

  • Variable c: Number of children in the park.
  • Variable a: Number of adults in the park.

The attendance at the amusement park is 30,000 attendees, hence:

c + a = 30,000, which is the first equation in matrix form.

Then:

a = 30,000 - c

The cost of attending an amusement park is $10 for children and $20 for adults. The total money earned by the park is $500,000, hence:

10c + 20a = 500,000, which is the second equation in matrix form.

Since a = 30,000 - c, we replace:

10c + 20a = 500,000

10c + 20(30000 - c) = 500,000

10c = 100,000

c = 10,000.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

8 0
2 years ago
Find all solutions to the equation:
crimeas [40]

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That turns into 7z^2 - 14z + 7 = 0 after adding 5 to both sides. Use the quadratic formula to solve for z. The only solution is z = 1 (see attached image). Since we made z = sin(x), this means sin(x) = 1. All solutions to this equation will be in the form x = (pi/2) + 2pi*n, which is the radian form of the solution set. If you need the degree form, then it would be x = 90 + 360*n

The 2pi*n (or 360*n) part ensures we get every angle coterminal to pi/2 radians (90 degrees), which captures the entire solution set.

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7 0
3 years ago
If m∠D + m∠E = 180°, then ∠D and ∠E are classified as what kind of angles?
Archy [21]
The other person is literally wrong. The answer is D. Supplementary because two angles that add up to 180 are supplementary angles.
3 0
2 years ago
Use the triangle below to write the given ratios.<br> • sin(P) = <br>tan(T) = <br>cos(T) =​
Sati [7]

Answer:

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Explaining:

The ratios of the sides of a right triangle are called trigonometric ratios. Three common trigonometric ratios are the sine (sin), cosine (cos), and tangent (tan). These are defined for acute angle.

In these definitions, the terms opposite, adjacent, and hypotenuse refer to the lengths of the sides.

3 0
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4 0
2 years ago
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