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3 years ago

Please help me find the value of x and show and explain work

Mathematics

2 answers:

riadik2000 [5.3K]3 years ago

5 0

2x + 3 = 9 Move all terms not containing x to the right side of the equation.

2x = 6 Divide each term by 2 and simplify.

x=3

polet [3.4K]3 years ago

5 0

You make 2x+3 equal 19 so like this 2x+3=19 then you subtract 3 over to 19 and that is 2x=16 then you divide 16 by 2 and that is 8 so x=8

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How can I calculate a square root without guess and check?

Darina [25.2K]

By multiplying the same numbers.

2*2=4 *4 square root is 2

3*3=9 *9 square root is 3

4*4=16 *16 square root is 4

5*5=25 *25 square root is 5

Try this, maybe it will work :)

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2 years ago

Simplify (2^5/3^2)^4 I need help asap within 10 min

Daniel [21]

Answer:

$\frac{2^{20} }{3^{8} }$

Step-by-step explanation:

Exponent Multiplication Rule :

$(\frac{x^{a} }{y^{b} } )^{c} = \frac{x^{ac} }{y^{bc} }$

=============================================================

Solving :

⇒ $(\frac{2^{5} }{3^{2} } )^{4}$

⇒ $\frac{2^{5(4)} }{3^{2(4)} }$

⇒ $\frac{2^{20} }{3^{8} }$

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2 years ago

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scZoUnD [109]

Answer:

3 $\sqrt{7}$

Step-by-step explanation:

5 0

2 years ago

Solve for x. Show each step of the solution. 4.5(4 − x ) + 36 = 202 − 2.5(3x + 28)

IgorLugansk [536]

Answer:

Step-by-step explanation:

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4 0

3 years ago

The populations of two cities after t years can be modeled by -150t+50,000 and 50t+75,000 . What is the difference in the popula

creativ13 [48]

Answer:

The difference in the populations of the cities when t=4 is 25,800.

Step-by-step explanation:

Given equations each of the city:

-150t+50,000

and

50t+75,000

To find the difference between the population when t=4, we first have to solve both equation when t=4.

For both equations, substitute 4 into t:

-150(4) + 50,000 = 49,400

50(4) + 75,000 = 75,200

Now subtract 49,400 from 75,200 and you get 25,800.

The difference in the populations of the cities when t=4 is 25,800.

3 0

1 year ago

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