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2 years ago

Why does: 5x+3x+2x = 10x and not 10xxx?

Mathematics

2 answers:

Helen [10]2 years ago

8 0

Because you are not adding the x's .When you add the coefficients, the variable comes along with it.

atroni [7]2 years ago

7 0

Because you are adding an amount of the same variable. They are like terms so you would combine them. If it was 10xxx it would be 10+3x. But, 5x+3x+2x is 10 because 3x+2x is 5 and 5x+5x is 10x. You do not add the actual x's together, just the amount that is shown.
Think of it as this way:
5x = x x x x x
3x = x x x
2x = x x
in total, there are 10 x's

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The of -6 is 6, because it is 6 units from zero on

Ilya [14]

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In terms symbols, we use vertical bars like this

|-6| = 6

to represent absolute value. Absolute value is distance from zero on a number line. Negative distance is not possible.

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1 year ago

Apart from base-2, do any non-base-10 numerical systems lend themselves to particular optimizations or advantages? No answer nee

muminat

Answer:

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Step-by-step explanation:

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2 years ago

Let f(x)= x^2-4x-c. Find a nonzero value of c such that f(c)=c.

Dimas [21]

Answer:

The nonzero value of c will be:

$c = 6$

Step-by-step explanation:

Given the function

$f\left(x\right)=\:x^2-4x-c$

$f\left(c\right)=\:c^2-4c-c$

$f(c) = c$

$c=\:c^2-4c-c$

switching the sides

$c^2-4c-c=c$

subtract c from both sides

$c^2-4c-c-c=c-c$

$c^2-6c=0$

$c\left(c-6\right)=0$

Using the zero factor principle

$\:If}\:ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)$

$c=0\quad \mathrm{or}\quad \:c-6=0$

so, the solutions to the quadratic equations are:

$c=0,\:c=6$

Therefore, a nonzero value of c will be:

$c = 6$

5 0

2 years ago

jim sat at a table with 4 teachers and 9 children how many people were at the table after jim sat down

xeze [42]

Answer:

Step-by-step explanation:

Both teachers and children are people. If there were 4 teachers and 9 children already at the table, sitting down, when Jim arrived, then that would be 13 people at the table before he sit and 14 people after he sits.

4 0

2 years ago

Read 2 more answers

If the mass of a proton is 2.53 x 10^-37 gram, what is the mass of 1,000 protons

Dmitrij [34]

We can solve this problem by the rule of three.

1000 protons=10³ protons

1 proton------------------2.53*10⁻³⁷g
10³ protons---------- x

x=(10³ protons * 2.53*10⁻³⁷) / 1 proton=2.53*10⁻³⁷⁺³ protons=
=2.53*10⁻³⁴ protons

answer: 2.53*10⁻³⁴ protons

3 0

3 years ago