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vodomira [7]
2 years ago
6

PLEASE HELLPPPP What is 20 + 57 (45x56), (12÷50)

Mathematics
2 answers:
ValentinkaMS [17]2 years ago
4 0

#1

\\ \sf\longmapsto 20+57(45\times 56)

  • Solve the Bracket

\\ \sf\longmapsto 20+57(2520)

\\ \sf\longmapsto 20+143640

\\ \sf\longmapsto 143660

viva [34]2 years ago
4 0

Step-by-step explanation:

  • 20+57(45×56)
  • 20+57(2520)
  • 20+143640
  • 143660
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Answer:

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Effusion formula

Rate of effusion of helium/ Rate of effusion of nitrogen= √(Molar mass of nitrogen/Molar mass of helium)

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The measure of angle C is 89 degrees.

<u>Step-by-step explanation:</u>

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In this quadrilateral, the angles B and C are consecutive angles. So, the sum of angle B and angle C is equal to 180 degree.

Given that,

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<u>To find the value of x :</u>

m∠B + m∠C = 180

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