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Dmitry_Shevchenko [17]
3 years ago
15

7 + 3a = 12 + 2a a = [?]

Mathematics
1 answer:
german3 years ago
6 0

Answer:

a=5

Step-by-step explanation:

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I need help ASAP please someone help!
KATRIN_1 [288]

Answer: Choice A.  (-\infty, \infty)

This is the same as saying the set of all real numbers.

There are no restrictions to put on the domain, so there are no values to avoid. This is because there are gaps, jumps, or holes in the graph. It's one continuous single curve.

This curve stretches forever to the left and right. As it goes left, it moves up (rises to the left). As it moves right, it goes downhill (it falls to the right). Saying "rises to the left and falls to the right" is an informal way to describe the end behavior. The actual specific end behavior doesn't matter. What matters is both left and right sides go on forever.

A domain of the set of all real numbers means we can plug in any real number for x, and get some output for y, which is part of the range.

One way we can describe the set of all real numbers in terms of an inequality is to write -\infty < x < \infty meaning that x is between negative and positive infinity, ie x is anything you want. The inequality -\infty < x < \infty converts to the interval notation (-\infty, \infty). Interval notation is a compact way of writing compound inequalities.

7 0
3 years ago
PLEASE PLEASE PLEASE HELP DECIMAL WORD PROBLEM
Katen [24]

Answer:

179 minutes

Step-by-step explanation:

You can write an equation to represent the cost of the rental, and then you can solve the equation to find the number of hours.

Let m = number of minutes.

The total cost is the cost per minute plus the fee to start.

1 minute costs $0.12.

2 minutes cost $0.12 * 2

x minutes cost $0.12 * x, or simply 0.12x.

The fee to start is $2, so the total to rent for m minutes is 0.12m + 2.

The equation

c = 0.12m + 2

gives you the cost, c, for a rental of m minutes.

We are told the total cost was $23.48. Replace c with 23.48, and solve for m, the number of minutes.

23.48 = 0.12m + 2

Switch sides.

0.12m + 2 = 23.48

Subtract 2 from both sides.

0.12m = 21.48

Divide both sides by 0.12

m = 21.48/0.12

m = 179

Answer: 179 minutes

7 0
3 years ago
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Name one pair of parallel planes. All lines and planes that appear to be parallel are parallel.
bezimeni [28]

The parallel plane is the plane that has the same in-between distance at all points on the plane so plane ABF is parallel with plane DCG so option (C) is correct.

<h3>What is the plane?</h3>

The plane is a two dimension(2D) surface that has a surface area.

We can draw lines on a plane and two or more planes can intersect or parallel.

If two planes are parallel then the perpendicular distance between both planes must be the same.

The angle of inclination of two parallel planes with a single reference plane is also the same.

In the given cuboid the plane ABF is parallel with plane DCG.

So, ABF || DCG.

Hence "The parallel plane is the plane that has the same in-between distance at all points on the plane so plane ABF is parallel with plane DCG".

To learn more about planes,

brainly.com/question/1962726

#SPJ1

3 0
1 year ago
Tell whether the sequence 12, 4, -4, -12, -20, ... is arithmetic
Shkiper50 [21]

Answer:

yes, it is arithmetic as the common difference is -8

8 0
3 years ago
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Which is equal to a rotation of 90°ccw?
vfiekz [6]
A rotation 270° clockwise would be equal to a rotation 90° counterclockwise.
3 0
4 years ago
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