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Alinara [238K]
2 years ago
6

21=8+x (solve for x)

Mathematics
2 answers:
gavmur [86]2 years ago
5 0

Answer:

X=13

Step-by-step explanation:

velikii [3]2 years ago
5 0

Answer:

x=13

Step-by-step explanation:

21=8+x

Swap sides so that all variable terms are on the left hand side.

8+x=21

Subtract 8 from both sides.

x=21−8

Subtract 8 from 21 to get 13.

x=13

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Which graph represents the solution set of the system of inequalities? {y&lt;−3x−2y<br> y≤x−2
irina1246 [14]

Answer:

Option 1

Step-by-step explanation:

In each inequality we have the equation of a line.

The first step in solving this problem is to identify each line in the figures.

To do this, we willient your cut points.

y = x-2

We do y = 0

0 = x-2

x = 2. This line cuts the x-axis at x = 2.

Now we do x = 0

y = -2.

This line cuts the y-axis in y = -2.

Now we can identify this line in the figure.

The inequality is:

y≤x - 2

Then the region that represents this inequality are all the points below the line y = x-2 and also those that belong to the line.

Try for example the point (0, -4) that is below this line.

-4≤0-2

-4≤-2. The inequality is met.

We do the same for the other line:

y<-3x - 2

y = -3x-2.

The cut points are:

2 = -3x

x = -2 / 3

y = -2

Locate in the graphs the line that meets these characteristics.

The region understood by this inequality are all points below the line

y = -3x-2 and which, in turn, are below the line y = x-2.

Once again, the point (-4.0) complies with both inequalities.

Identify these characteristics in the options, and you will see that the correct option is the first

4 0
3 years ago
Read 2 more answers
In a baseball card collection, 40% of the cards are worth more than 100$. If 12 cards in the collection are worth more than $100
Helen [10]

Answer:

30

Step-by-step explanation:

12 is 40% of the total number of cards.

12 = 0.4x, where x is total number of cards

/0.4 /0.4

30 = x

30 cards

5 0
2 years ago
Read 2 more answers
Set of whole numbers less than 24
Dmitry_Shevchenko [17]

Answer:

2,4,6,8,10,12,14,16,18,20,,22

Step-by-step explanation:

4 0
3 years ago
X2-5x+10=0 is it quadratic equation? how can i identify the value of a,b,c? help
natali 33 [55]
A= 1
B= -5
C= 10

In order to figure it out, you can think about it like this..

4 0
3 years ago
What is the decibel level of the noise from a fire alarm with intensity 10^-1 watts per square inch
prisoha [69]

Answer:

110 db

Step-by-step explanation:

6 0
2 years ago
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