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3 years ago

Solve the equation. type the numeral answer. do not round up-5= b - 2.3

Mathematics

1 answer:

ycow [4]3 years ago

5 0

Answer and explanation:

- 5 = b - 2.3 add 2.3 to both sides

+2.3 +2.3

- 2.7 = b

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Help on complex numbers

NikAS [45]

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3) 1/(2+i)=(2-i)/(4+1) = (2-i)/5
4)1/(-3+5i)=(-3-5i)/(9+25)
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3 years ago

What is this? What would be an equation for the graph?

Travka [436]

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3 years ago

Find the output, y, when the input x, is 30. y = 14 – 0.5x y =

Mumz [18]

Answer:

y=-1

Step-by-step explanation:

14-(.5*30) same as dividing 30 by 2

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6 0

3 years ago

Write each of the following expressions without using absolute value: |z−6|−|z−5|, if z<5

abruzzese [7]

Answer:

The answer is 1.

Step-by-step explanation:

Given the expression:

$|z-6|-|z-5|,\ if\ z$

To find:

The expression without absolute value.

Solution:

First of all, let us learn about the absolute value function:

$y = f(x) = |x| =\left \{ {{x\ if\ x>0} \atop {-x\ if\ x$

i.e. value is x if x is positive

value is -x if x is negative

Here the given expression contains two absolute value functions:

$|z-6|$ and $|z-5|$

Using the definition of absolute value function as per above definition.

$|z-5| =\left \{ {{(z-5)\ if\ z>5} \atop {-(z-5)\ if\ z$

$|z-6| =\left \{ {{(z-6)\ if\ z>6} \atop {-(z-6)\ if\ z$

Now, it is given that z < 5 that means z will also be lesser than 6 i.e. z < 6

So, given expression $|z-6|-|z-5|,\ if\ z$ will be equivalent to :

$-(z-6) - (-(z-5))\\\Rightarrow -z+6 +z-5 = \bold{1}$

So, the expression is equivalent to 1.

6 0

3 years ago

Is the given function continuous at x=1?

rusak2 [61]

Answer:

The answer is "Option C".

Step-by-step explanation:

Given:

$\to f(x)=2x^2-3x+1\\\\when \ x=1\\\\\to f(1)= 2(1)^2-3(1)+1\\\\\to f(1)= 2(1)-3+1\\\\\to f(1)= 2-3+1\\\\\to f(1)=-1+1\\\\\to f(1)=0$

That's why choice C is correct.

3 0

2 years ago