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ICE Princess25 [194]
3 years ago
15

Identify square root of 2 as either rational or irrational and approximate to the tenths place

Mathematics
2 answers:
nordsb [41]3 years ago
5 0
The square root of 2 is an irrational number (1.4)
raketka [301]3 years ago
5 0
2 is irrational and it is approximately 1.4
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Can someone help me with this math question?
Triss [41]
It would be 19

42-23=19
8 0
3 years ago
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Meg rowed her boat upstream a distance of 45 mi and then rowed back to the starting point. The total time of the trip was 14 hou
Montano1993 [528]
Recall your d = rt.

so hmm is about the same as the other one... so say the boat has a speed rate of "b", well, going downstream the boat goes say " b + 2 ", because the current is adding to it, and going upstream is " b - 2 " because the current is eroding from it.

So if the whole trip took 14 hours, say it took "t" hours going upstream, then going downstream it took the slack or " 14 - t ".

Also notice, the trip forth and back is the same 45 miles.

\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
Upstream&45&b-2&t\\
Downstream&45&b+2&14-t
\end{array}
\\\\\\
\begin{cases}
45=t(b-2)\implies \frac{45}{b-2}=\boxed{t}\\\\
45=(b+2)(14-t)\\
----------\\
45=(b+2)\left( 14- \boxed{\frac{45}{b-2}}\right)
\end{cases}
\\\\\\
\cfrac{45}{b+2}=14- {\cfrac{45}{b-2}}\implies \cfrac{45}{b+2}=\cfrac{14(b-2)~-~45}{b-2}

\bf \cfrac{45}{b+2}=\cfrac{14b-28-45}{b-2}\implies \cfrac{45}{b+2}=\cfrac{14b-73}{b-2}
\\\\\\
45(b-2)=(b+2)(14b-73)\implies 45b-90=14b^2-45b-146
\\\\\\
0=14b^2-90b-56\implies 0=7b^2-45b-28
\\\\\\
0=(7b+4)(b-7)\implies b=
\begin{cases}
-\frac{4}{7}\\\\
\boxed{7}
\end{cases}
6 0
3 years ago
What is the solution to the equation x + 8.5 = 64.5? 7.6 48 56 73
Bogdan [553]
The solution to x + 8.5 = 64.5 is 56.

    x + 8.5 = 64.5
       - 8.5   - 8.5
---------------------------
    x = 56


4 0
3 years ago
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2(5x+4)=10x+6<br> Someone can help me?
Oliga [24]

Answer:

<h2><em><u>HOP</u></em><em><u>E</u></em><em><u> THAT WILL</u></em><em><u> HELP</u></em><em><u> YOU</u></em></h2>

4 0
3 years ago
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BRAINLIEST IF RIGHT<br> 16 - 2t = 5t + 9
REY [17]

Answer:

t = 1

Step-by-step explanation:

16 - 2t = 5t + 9

   +2t     +2t

-------------------------

16 = 7t + 9

-9        -9

--------------------------

7 = 7t

/7   /7

--------------------------

1 = t

3 0
3 years ago
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