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Elden [556K]
3 years ago
5

Evaluate. Please answer! I'd appreciate it! ASAP

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
5 0

3 \sqrt{7}  \sqrt{7}  = 3 \sqrt{ {7}^{2} }  = 3 \times 7 = 21 \\ 6 \sqrt{ {7}^{5} }  = 6 \sqrt{ {7}^{4} \times 7 }  = 6 \times  {7}^{2}  \sqrt{7}  = 294 \sqrt{7}  \\  \frac{21}{294 \sqrt{7} }  =  \frac{1}{14 \sqrt{7} }  \\  \\ or \:  \frac{1}{14 \sqrt{7} }  \times  \frac{ \sqrt{7} }{ \sqrt{7} }  =  \frac{ \sqrt{7} }{14 \times 7}  =  \frac{ \sqrt{7} }{98}
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Un bosque de 2 km2 está formado por hayas y pinos. Las hayas ocupan 380.000 m2 ¿Cuántos metros cuadrados ocupan los pinos?
Ivanshal [37]

Answer:

Los pinos ocupan \\ 1620000m^{2} o <em>1 millón seiscientos veinte mil metros cuadrados</em>.

Step-by-step explanation:

Una manera de resolver este problema es la siguiente:

\\ 1km^{2} = 1km * 1km = 1000m * 1000m = 1000000m^{2}

\\ 2km^{2} = 2km * 1km = 2000m * 1000m = 2000000m^{2} = 2 * 10^{6}m^{2}

En palabras, \\ 2km^{2} = 2000000m^{2}, o <em>dos kilómetros cuadrados</em> son iguales a <em>2 millones de metros cuadrados</em>.

Sabemos que:

  1. Estos \\ 2km^{2} = 2000000m^{2} de bosque lo ocupan hayas y pinos, y, adicionalmente,
  2. Las hayas ocupan \\ 380000m^{2}.

De esta manera, <em>la parte que ocupan los pinos es el total del bosque menos el área ocupada por las hayas</em>. Por lo tanto, el área ocupada por los pinos es:

\\ 2000000m^{2} - 380000m^{2}

\\ 1620000m^{2}

¿Cuántos metros cuadrados ocupan los pinos?

Los pinos ocupan, entonces, \\ 1620000m^{2} o <em>1 millón seiscientos veinte mil metros cuadrados</em>.

8 0
3 years ago
PLEASE HELP! FIRST TO ANSWER AND I'LL MATK YOU BRAINLIEST! I MEAN IT"S ONLY 7TH GRADE MATH!!!!!!
Travka [436]
Speed= distance/time

= 1110/15
= 74 feet per second
3 0
3 years ago
WORTH 1O POINTS!!
LenKa [72]

Answer:

okay so.

Step-by-step explanation:

1. they're the same.

2. theyre also the same. simplify them both and u get 3/4.

3. not the same.

4. not the same. can't be simplified.

5. not sure someone else can try

4 0
3 years ago
Dilations help me please
8_murik_8 [283]

Answer:

D'(1, - 1 )

Step-by-step explanation:

Assuming the dilatation is centred at the origin, then multiply the coordinates of D by \frac{1}{2} , that is

D(2, - 2 ) → D'(\frac{1}{2} (2) , \frac{1}{2} (- 2) ) → D'(1, - 1 )

5 0
4 years ago
What is the length of AC? PLEASE HELP ASAP WILL GIVE BRAINLIEST TY
vladimir2022 [97]

Answer:

2.33 units

Step-by-step explanation:

\tan 25\degree =\frac{AC}{5}\\\\0.46630 = \frac{AC}{5}\\\\AC = 0.46630 \times 5\\AC =2.3315\\AC = 2.33 \: units

7 0
3 years ago
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