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BARSIC [14]
3 years ago
7

Whats the answer for each of these

Mathematics
1 answer:
IrinaK [193]3 years ago
6 0
I don't know sorry I wish I new
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Evaluate. 32 + 23 + ( 5 9 )2
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173

Step-by-step explanation:

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0.4(x-0.45)=9.2 PLZZZZZ HELP!!!!!!!
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0.4(−0.45)=9.2

2(−0.45)5=9.2

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=23.45

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A teacher has 3 hours to grade all the papers submitted by the 35 students in her class. She gets through the first 5 papers in
Andreyy89
So, she has 3hrs to grade all papers, for 35 students.. alrite.

the first 5, she does them in 30minutes.. what's the speed rate? well, 5/30 or 1/6

now, she has still 2 hours and a half, or 150 minutes, to do the remaining 30 papers... she has to work at a rate of 30/150 then... which is 1/5 simplified.

now if we take 1/6 as the 100%, what is 1/5 in percentage then?

\bf \begin{array}{ccllll}&#10;rate&\%\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;\frac{1}{6}&100\\\\&#10;\frac{1}{5}&x&#10;\end{array}\implies \cfrac{\frac{1}{6}}{\frac{1}{5}}=\cfrac{100}{x}\implies \cfrac{1}{6}\cdot \cfrac{5}{1}=\cfrac{100}{x}\implies \cfrac{5}{6}=\cfrac{100}{x}&#10;\\\\\\&#10;x=\cfrac{6\cdot 100}{5}\implies x=120

so 1/5 is 120% in relation to 1/6... meaning the rate of 1/5 she needs to move through, namely 1 paper every 5 minutes, is 20% faster than 1/6.
8 0
3 years ago
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EXPERTS/ACE/GENIUSES/TRUSTED HELPERS HELPP ME
Mekhanik [1.2K]
B will be your best answer

The amount of points increase ~20 points each hour

just look at the point placements, and the amount each point is worth

also note that the bottom is by half hours, not hours


hope this helps
3 0
3 years ago
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