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vazorg [7]
4 years ago
12

Find the value of 3x+2 when 7+ x =5 Please Help me !!

Mathematics
1 answer:
Juliette [100K]4 years ago
3 0
3x+2=5x and 7+x=5 the answer is 10x

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Need help here plss
umka2103 [35]

Answer:

Solutions: b, c, d, e

Not Solutions: a

Step-by-step explanation:

There are two ways to solve this problem: you could graph the system and check which points fall in the solution set or you could substitute the x  and y values of each point into the inequalities that make up the system. I'm going to use the former because it's quicker, in my opinion.  

Step 1: Graph

Rewriting the first inequality gives us:

2x+5y

5y

y

To graph this, draw the line  y=-\frac{2}{5}x +2 and then, because the sign is " ", shade below the line and make it a dashed line. This is the red inequality on the graph.

Rewriting the second inequality gives us:

3x-4y\geq -8

-4y\geq -3x-8

y\leq \frac{3}{4}x+2

To graph this, draw the line  y\leq \frac{3}{4}x+2 and then, because the sign is " \leq", shade below the line and keep it a solid line. This is the blue inequality on the graph.

The solution set of the system will be the region where the two shaded areas overlap, which is the purple area.

Step 2: Check Points

Now, all we need to do is check whether each point lies in the purple region on the graph.

(3,5) lies above the purple region, but it isn't in the region, so it is not a solution to the system.

(-2,10) does lie in the purple region, so it is a solution to the system.

(5,-12) does lie in the purple region, so it is a solution to the system.

(-6,-8) does lie in the purple region, so it is a solution to the system.

Finally, (0,0) lies in the purple region, so it is a solution to the system.

Hope this helps!

5 0
3 years ago
What is the range of g(x) = -2x+31 + 2?
rjkz [21]

Answer:

The range of g(x) = -2x + 33 is D. (Negative infinity, positive infinity)

Step-by-step explanation:

The function g(x) is a linear line, so all values of x are included in the domain. If all values of x in the domain works, then there are infinite amount of values for both x and y. Therefore, your answer is D.

7 0
3 years ago
Read 2 more answers
I have no clue what it is
Orlov [11]
13.95+2.25+2.25+2.25+2.75+2.75+2.75= 28.95

6 0
3 years ago
If a, = 6 and a, = 3+2(0,-), then a, equals
MissTica
It =369 beacause it just is
7 0
3 years ago
Find the different quotient<br> f(x)=4x-7
bulgar [2K]

Answer:

4

Step-by-step explanation:

if its the difference quotient it is 4

Find  f ( x + h )  and  f ( x ) , and plug these values into the difference quotient formula.

ps can u mark me brainliest if i got it right plz

4 0
3 years ago
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