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algol13
3 years ago
7

Simplify

\sqrt{3} \times \sqrt{21} " alt=" \sqrt{3} \times \sqrt{21} " align="absmiddle" class="latex-formula">
Please Help​
Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
4 0

Answer:

3 times sq rt 7

jdjdhdmdhdkxnd

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laila [671]

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-8,-7

Step-by-step explanation:

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3 years ago
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50 POINT QUESTION
LenKa [72]

Answer:

0.04 or 4%

Step-by-step explanation:

point estimate of proportion:

(0.6+0.68)/2

1.28/2

0.64

Margin of error:

0.68 - 0.64 = 0.04

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7 0
3 years ago
10 is 8% of a, and 5 is 4% of b. c equals b/a. What is the value of c?? step by step explanation pls...
klio [65]

Answer:

c = 1

Step-by-step explanation:

"10 is 8% of a":     0.08a = 10, or <u>a = (10/0.08)</u>

"5 is 4% of b":      0.04b =  5, or <u>b = (5/0.04)</u>

"c equals b/a":       c = (b/a)

----

What is the value of c?

c = (b/a)

c = ((5/0.04)/(10/0.08))

c = (5/0.04)*(0.08/10)

c = (5/10)*(0.08/0.04)

c = (1/2)*(2)

<u>c = 1</u>

5 0
2 years ago
(a 3 - 2a + 5) - (4a 3 - 5a 2 + a - 2)
Andreas93 [3]

Answer:

- 3a³ + 5a² - 3a + 7

Step-by-step explanation:

Given

(a³ - 2a + 5) - (4a³ - 5a² + a - 2)

Distribute both parenthesis noting the second is distributed by - 1

= a³ - 2a + 5 - 4a³ + 5a² - a + 2 ← collect like terms

= (a³ - 4a³ ) + 5a² + (- 2a - a) + (5 + 2)

= - 3a³ + 5a² - 3a + 7

3 0
3 years ago
Hector is on a trip to Japan. The table below outlines some of the fun things he would like to see and do while on his trip, as
VLD [36.1K]
<span>d.Hector cannot afford to see the sumo tournament, because it would put him over budget by almost $12.

</span><span> <span> </span><span><span> Exchange rate                          <span> $       1.00     </span> <span> ¥        94.153                      </span>Balance:
</span> <span> Beginning Balance: <span>                $  575.00     </span><span> ¥  54,137.98
</span> </span> <span> Kabuki performance <span>               $    74.95 </span> <span>      ¥    7,056.77               </span><span> ¥  47,081.21
</span> </span> <span> Kaiseki dinner <span>                                                   ¥    8,745.00 </span> <span>                ¥  38,336.21
</span> </span> <span> Shopping <span>                                   $  262.49 </span> <span>     ¥  24,714.22 </span> <span>                ¥  13,621.99
</span> </span> <span> Onsen visit <span>                                                         ¥    6,811.00 </span> <span>                ¥    6,810.99
</span> </span> <span> Museum visit                                                     <span> ¥    2,423.00 </span> <span>                ¥    4,387.99
</span> </span> <span> </span> <span> Sumo Tournament <span>                                          ¥    5,488.00 </span> <span>                  ¥   -1,100.01

1,100.01 / 94.153 = $11.68 rounded up to $12. </span></span></span></span>
5 0
3 years ago
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