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3 years ago

Can u help me plssssssssssss

Mathematics

2 answers:

polet [3.4K]3 years ago

7 0

y - 2/9 ≤ 5/9

y ≤ 5/9 + 2/9

y ≤ 7/9

Step-by-step explanation:

Tems11 [23]3 years ago

6 0

Regroup terms:
y - 2/9 ≤ 5/9

Add 2/9 to both sides:
y ≤ 5/9 + 2/9

Simplify 5/9 + 2/9 to 7/9:
y ≤ 7/9

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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

Anyone know this? Any help would be appreciated

zysi [14]

The correct answer is B.

5 0

3 years ago

Read 2 more answers

Exactly how do you figure out one step equations? We're learning about these in math now, and it's very difficult for me.

Eddi Din [679]

X/4=9
*4=9*4
x=36

Hope this helps!

4 0

3 years ago

Use compatible numbers to estimate the quotient394.6 divided by 9

laiz [17]

Answer:

Step-by-step explanation:

As a first rough estimate: divide 390 by 10, obtaining 39.

Another reasonable approximation could be obtained by dividing 450 by 9 and 360 by 9, obtaining 50 and 40. Since 390 is roughly halfway between 360 and 450, estimate that the quotient is approx 45 (halfway between 40 and 50).

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bp%7D%7B5%7D" id="TexFormula1" title="\frac{p}{5}" alt="\frac{p}{5}" align="absmiddle

tatyana61 [14]

Answer:

p ≥ -10

Step-by-step explanation:

first, subtract one from each side to get:

p/5 ≥ -2

lastly, multiply each side by 5

p ≥ -10

6 0

3 years ago