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skad [1K]
3 years ago
15

Is 5x+7=x-2 a one solution?

Mathematics
2 answers:
slega [8]3 years ago
7 0

Answer:

Yes, it only has 1 solution.

Step-by-step explanation:

The solution to 5x+7=x-2 is -2 1/2, therefore, there is only 1 solution.

If you want to know how to get  -2 1/2, keep reading.

First, we must isolate the variable 'x.' To do so, we need to move all the x's to one side and all the constants or other terms to the other. First, lets move our x from the right side of the equal side to the right, and then our 7 from the left side to the right.

Remember, if you want to move a number to the other side of an equation, the neg./pos. signs have to change. If we move a positive 'x' to the other side, it will become negative. The same principle applies to the 7.

Let's swap them.

5x -x = -2 -7

Now we can simplify.

4x = -9

We're not done yet! we till have to fully isolate the 'x.' Now, we divide 4x by 4 to get rid of the 4. If we do something to one side, we have to do the same thing to the other. So, we need to divide both sides by 4.

4x/4 = -9/4

x = -9/4

x = -2 1/2

Hope this was helpful! Let me know if you have any other questions. :)

il63 [147K]3 years ago
4 0
5x-x=-2-7
4x=-9
x=2/3 or x=-2/3
Since there are 2 answers, it is not one solution.
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koban [17]
R - 18 = 50

r = 50 + 18 = 68
Hence Rick is 68 yrs old
7 0
2 years ago
Multiply (3b​ 2​+ 4​b​ + 8)(-2​b​ 2​+ ​b​ + 10).
emmainna [20.7K]
Answer: -30b^2+76b+80
Explanation:
Multiply the second parenthesis by each term from the first parenthesis:
3b•2(-2•2+b+10)+4b•(-2b•2+b+10)+8(-2b•2+b+10)
Then distribute 3b•2 through the parenthesis
-24b^2+6b^2+60b+4b•(-2b•2+b+10)+8(-2b•2+b+10)
Then collect like terms
-30b^2+60b+40b-32b+8b+80
Collect like terms=
-30b+76b+80
4 0
3 years ago
What is the greatest common factor of 96 and 144
Alborosie
Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 96\ and\ 144\\can\ be\ divided\\\\96:2\\48:2\\24:2\\12:2\\6:2\\3:3
\\\\144:2\\72:2\\36:2\\18:2\\9:3\\3:3\\\\GCF=2^4*3=16*3=48\\\\Greatest\ common\ factor\ of\ 96\ and\144 \ is\ equal\ to\ 48.

3 0
3 years ago
13. The table represents some points of a linear function.
RUDIKE [14]

Answer:

y=-4x-18

Step-by-step explanation:

To find the slope of the function, you need two points in order, the first point having its x and y coordinates labeled as x1 and y1, and the second point having its coordinates labeled as x2 and y2. then, use the equation for slope, which is m=(y2-y1)/(x2-x1), and plug in the numbers. You should get m=(-10+2)/(-2+4)= -8/2= -4.

Then, use the slope and a point on the graph, and plug it into point slope form, which is y-y1=m(x-x1). No matter what point you use, you should get the same thing. I used the point (-2, -4). Using this point, the steps to arrange the equation in slope intercept form is: y+2=-4(x+4)=> y+2=-4x-16 => y=-4x-18.

8 0
3 years ago
At last week's football game, 125 tickets were sold. This week 225 tickets were sold. What percent of the number of tickets sold
8_murik_8 [283]

Answer:

the answer is 180%.

Step-by-step explanation:

5 0
3 years ago
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