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blagie [28]
3 years ago
14

2[x]-4=6 whats the solution

Mathematics
2 answers:
Slav-nsk [51]3 years ago
7 0

This is a simple equation that is easily solved.

2x-4=6 You just have to isolate the variable, which is x, to get the solution.

So what you can do, is to get rid of the -4 to isolate the variable by adding 4 to the other side of the equation.

2x-4 (+4)=6+4

2x=10

Then you can isolate the variable by doing the opposite action it says to do, so division.

x=5

fomenos3 years ago
3 0

2x - 4 = 6

2x = 6 + 4

2x = 10

x = 10 : 2

x = 5

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Anyone know this?? i need help!
Alex777 [14]

Answer:

45.50(7/10)

Step-by-step explanation:

Multiplication with fractions is the same as division with integers

7 0
3 years ago
Find the radius of sphere with a volume of 1372π/3 cubic feet.
Arisa [49]

Answer:

The radius of the sphere is 7m

Step-by-step explanation:

Given

Volume of a sphere = 1372π/3 m³

Required

The radius.

The volume of a sphere is calculated using the following formula.

V = 4/3 πr³

Where V = volume of the sphere and r represents it's radius.

By substitution;

1372π/3 = 4/3 πr³

Multiply both sides by 3

1372π = 4πr³

Divide through by 4

343π = πr³

Divide through by π

343 = r³

Take cube root of both sides.

r = 7.

Hence, the radius of the sphere is 7m

4 0
3 years ago
How many kg of 30% salt solution by mass and 40% salt solution by mass should be mixed to form 200kg of 37% salt solution ?
allochka39001 [22]

Let us assume that x kg of 30% salt solution is mixed with (200-x) kg of 40% salt solution in order to obtain 200 kg of 37% salt solution.

We can set up a linear equation in terms of x by setting amount of total salt before mixing and after mixing equal to each other.

30\%\text{ of }x+40\%\text{ of }(200-x)=37\%\text{ of }200\\0.30x+0.40(200-x)=0.37(200)\\0.30x+80-0.40x=74\\0.10x=6\\x=60

Therefore, 60 kg of 30% salt solution should be mixed with 140 kg of 40% solution.

7 0
3 years ago
Let f(x) = -2x + 4 and g(x) = -6.0 – 7. Find f(x) – g(x).
Oksanka [162]

Answer:

-2x + 3

Step-by-step explanation:

f(x) - g(x)

(-2x + 4) - (-6.0 - 7)

-2x + 4 - (-6.0) - 7

-2x + 4 + 6.0 - 7

-2x + 10 - 7

-2x + 3

7 0
3 years ago
Point Q is the midpoint of GH. GQ=2x+3, and GH=5x−5. What is the length of GQ?
UNO [17]
As given Q is the midpoint of GH. SO it will divide GH in two equal parts. We can also say GQ is half of GH.

So we can write

GQ =  \frac{GH}{2}

As given GQ = 2x+3 , GH = 5x - 5

2x + 3 =  \frac{5x - 5}{2}

2(2x+3) = 5x - 5

4x + 6 = 5x - 5

6+5 = 5x - 4x

11 = x

So GQ = 2x+ 3 = 2*11 + 3 = 25
5 0
4 years ago
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