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Lesechka [4]
3 years ago
6

Can anyone help me please.

Mathematics
1 answer:
Delvig [45]3 years ago
3 0
How am I suppose to help you if I can’t see the words. It’s too blurry.
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120 books increased by 55%
mash [69]
55% of 120 is just 66
add that with 120, 186

so... 186 books
8 0
3 years ago
Please with an explanation
g100num [7]

Answer:

mbkjbikjjbkbkjbjbjkbjkjbkbjkjbk

Step-by-step explanation:

7 0
2 years ago
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PLEASE HELP ITS DUE TODAY THANKS!
Nutka1998 [239]
I got 130.24 square feet. Hope that helps.
8 0
2 years ago
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Shortern this expression pls​
pogonyaev

Answer:

c =\frac{8}{3}

Step-by-step explanation:

Given

c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7}} +  \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}}

Required

Shorten

We have:

c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7}} +  \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}}

Rationalize

c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7} * \frac{4 + \sqrt 7}{4 + \sqrt 7}} +  \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}*\frac{4 - \sqrt 7}{4 - \sqrt 7}}

Expand

c = \sqrt{\frac{(4 + \sqrt 7)^2}{4^2 - (\sqrt 7)^2}} +  \sqrt{\frac{(4 - \sqrt 7)^2}{4^2 - (\sqrt 7)^2}

c = \sqrt{\frac{(4 + \sqrt 7)^2}{16 - 7}} +  \sqrt{\frac{(4 - \sqrt 7)^2}{16 - 7}

c = \sqrt{\frac{(4 + \sqrt 7)^2}{9}} +  \sqrt{\frac{(4 - \sqrt 7)^2}{9}

Take positive square roots

c =\frac{4 + \sqrt 7}{3} +  \frac{4 - \sqrt 7}{3}

Take LCM

c =\frac{4 + \sqrt 7 + 4 - \sqrt 7}{3}

Collect like terms

c =\frac{4  + 4+ \sqrt 7 - \sqrt 7}{3}

c =\frac{8}{3}

4 0
3 years ago
Pls help
bonufazy [111]

Answer:

\underline{ \boxed{z\overline{z}  = 34}}

Step-by-step explanation:

if \: z = -3 + 5i \\then \:  \overline{z} =  - (3  +  5i) \\ hence \: z\overline{z}  = (-3 + 5i)( - 3   -  5i)  \\ z\overline{z}  = 9 + 15i - 15i -   {(5i)}^{2}  \\ z\overline{z}  = 9  - (25 ){i}^{2}  \\ z\overline{z}  = 9 - (25)( - 1) \\ z\overline{z}  = 9 + 25 \\  \underline{ \boxed{z\overline{z}  = 34}}

♨Rage♨

7 0
2 years ago
Read 2 more answers
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