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3 years ago

What is the answer to 5x-3=3(2x-1)-x

Mathematics

1 answer:

Stolb23 [73]3 years ago

3 0

Answer:

x = infinite amount of solutions

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

5x - 3 = 3(2x - 1) - x

Step 2: Solve for x

Distribute 3: 5x - 3 = 6x - 3 - x
Combine like terms: 5x - 3 = 5x - 3
Add 3 to both sides: 5x = 5x
Divide 5 on both sides: x = x

Here we see that x does indeed equal x.

∴ x = infinite amount of solutions.

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For which equation is x=0 NOT a solution?

Nimfa-mama [501]

B, is the only solution where x=0 isn’t the answer because 2.5x+3=x and if u subtract the 2.5x you get 3= -1.5x and if you divide 3 by -1.5 it won’t be x=0

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3 years ago

an observer on a cliff 1200 feet above sea level sights two ships due East. The angle of depression to the shops are 48° and 33°

ziro4ka [17]

See the attached figure to better understand the problem

we know that
in the triangle ABC
tan 48°=AB/AC--------> AC=AB/tan48°------> 1200/tan 48°------> 1080.48 ft

in the triangle ABD
tan 33°=AB/AD---------> AD=AB/tan 33°-----> 1200/tan 33°------> 1847.88 ft

the distance between the ships is AD-AC---> 1847.88-1080.48----> 767.4 ft

the answer is
the distance between the ships is 767.4 ft

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4 years ago

Plz help me I don’t know how to do Number 1 and 2

Rainbow [258]

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6 0

3 years ago

2 x — = ----- 7 x + 10 x = ???

valentina_108 [34]

9514 1404 393

Answer:

x = 4

Step-by-step explanation:

Maybe you want to find x such that ...

2/7 = x/(x +10)

2(x +10) = 7x . . . . . . multiply by 7(x+10)

20 = 5x . . . . . . . . . . subtract 2x, simplify

4 = x . . . . . . . . . . . . divide by 5

_____

Additional comment

You can almost solve this "by inspection" if you recognize the difference of the denominator and numerator is 5 on the left and 10 on the right. If you multiply the fraction on the left by 2/2, you get 4/14, the values in x/(x+10) in the fraction on the right.

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3 years ago

How many ways can a cook arrange 9 of her 12 spice jars on a spice rack?

pshichka [43]

It depends if the 12 spice jars are all different.

If they are:

_ _ _ _ _ _ _ _ _ (9 spaces)

12*11*10*9*8*7*6*5*4

12 possibilities for first one, 11 for second, etc...

Multiply out to get:
79833600

5 0

4 years ago

Read 2 more answers