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Rudik [331]
3 years ago
15

I’m bad at math. This looks easy but of course I have no idea

Mathematics
2 answers:
Zanzabum3 years ago
3 0

Step-by-step explanation:

(this probably won't help so sorry) this is how I would do it:

6x+24 =90

90-24=66

6x= 66

66/6 =11

x=11

aleksklad [387]3 years ago
3 0
The answer is correct but I think the second step is wrong.
If your trying to solve for x then first you have to subtract 24 from both sides (24 and 90) so the 24 cancels out and your left with 6x = 66. Then you divide 6 by both sides and the 6x/6 cancels out so you’ll be left with X = 66/6 and then you will get X = 11
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Romashka-Z-Leto [24]
Consider this option:
1. if to re-write the condition, it is given: total time t=8 hours; upstream=downstream=6 miles; V_boat=4 m/h., V_current=V=?
2. note, that total time=time_upstream+time_downstream, where time_upstream=6miles/(V_boat-V) and time_downstream=6miles/(V_boat+V). Using this it is possible to make up and solve the following equation:
\frac{6}{4+V} + \frac{6}{4-V} =8; \ =\ \textgreater \  \  \frac{V^2-10}{16-V^2}=0; \ =\ \textgreater \  \ V=\sqrt{10} \  \frac{miles}{hour}

answer: √10

P.S. the roots of the equation are √10 and (-√10), only positive values is needed for V.
7 0
3 years ago
Simplify the product using the distributive property.
Svetllana [295]

Answer:

<h2><em><u>16h2</u></em><em><u> </u></em><em><u>-</u></em><em><u> </u></em><em><u>4h</u></em><em><u> </u></em><em><u>-</u></em><em><u> </u></em><em><u>42</u></em></h2>

Step-by-step explanation:

(4h + 6)(4h − 7)

= 4h(4h - 7) + 6(4h-7)

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3 years ago
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Answer:

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Step-by-step explanation:

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Neporo4naja [7]

Answer: 17/50

Step-by-step explanation:

First, to add fractions, we must find a common denominator, in this case, 100.

Then, we must make the fractions being added all have the common denominator.

So, we must multiply 3/10 * 10/10, which equals 30/100

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Then, just add across the numerator to get 34/100, which can be simplified to 17/50

6 0
3 years ago
Read 2 more answers
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