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4 years ago

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which expression is equivalent to 2m(3/2m+1) +3 (5/3m-2) ? A .3m^2+5m-1 B. 3/4m^2 +23/9m-6 C. 3m^2+7m-6 D. 3/4m^2+5/9m-1 please

explain with steps

2 answers:

vlabodo [156]4 years ago

8 0

Answer:

b

Step-by-step explanation:

horrorfan [7]4 years ago

5 0

Answer:

66

Step-by-step explanation:

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g 7. Find Re f and Im f and find their values at the given z. (Both answers should be included) f = z⁄(z + 1), z = 4 − 5

Schach [20]

Answer:

The real and imaginary parts of the result are $\frac{1441}{1601}$ and $\frac{4}{1601}$ , respectively.

Step-by-step explanation:

Let be $f(z) = \frac{z}{z+1}$ , the following expression is expanded by algebraic means:

$f(z) = \frac{z\cdot (z-1)}{(z+1)\cdot (z-1)}$

$f(z) = \frac{z^{2}-z}{z^{2}-1}$

$f(z) = \frac{z^{2}}{z^{2}-1}-\frac{z}{z^{2}-1}$

If $z = 4 - i5$ , then:

$z^{2} = (4-i5)\cdot (4-i5)$

$z^{2} = 16-i20-i20-(-1)\cdot (25)$

$z^{2} = 41 - i40$

Then, the variable is substituted in the equation and simplified:

$f(z) = \frac{41-i40}{41-i39} -\frac{4-i5}{41-i39}$

$f(z) = \frac{37-i35}{41-i39}$

$f(z) = \frac{(37-i35)\cdot (41+i39)}{(41-i39)\cdot (41+i39)}$

$f(z) = \frac{1517-i1435+i1443+1365}{3202}$

$f(z) = \frac{2882+i8}{3202}$

$f(z) = \frac{1441}{1601} + i\frac{4}{1601}$

The real and imaginary parts of the result are $\frac{1441}{1601}$ and $\frac{4}{1601}$ , respectively.

8 0

3 years ago

Bella had volunteered to feed the dogs at a shelter. The table shows the number of cups of dog food that each dog should be fed

Keith_Richards [23]

Answer:

It signifies the number of dogs that bella feeds. This is 100% correct

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

B^5-16/b^2-b-3 how to divide this

Olegator [25]

Answer:

ccccccccccccccccccccccc

5 0

3 years ago

Allie measured a house and its lot and made a scale drawing. She used the scale 9 inches = 5 feet. What scale factor does the dr

Damm [24]

Answer:

Therefore the scale used is 1 inch : 6.667 inches

Step-by-step explanation:

i) Scale used is 9 inches = 5 feet

ii) Scale used 9 inches = 5 $\times$ 12 inches = 60 inches

iii) Scale used is 1 inch $= \dfrac{60}{9}\hspace{0.2cm} = \hspace{0.2cm}\dfrac{20}{3} \hspace{0.2cm} = 6.667\hspace{0.2cm} inches$

iv) Therefore the scale used is 1 inch : 6.667 inches

3 0

4 years ago

HELPPP URGENT!!!

Nady [450]

Answer:

-68ft, or 68ft below sea level

Step-by-step explanation:

-72+4=-68

6 0

3 years ago