Questions by Wayne Lo

Questions by Wayne Lo

The ratio of boys to girls in a class is 3:5. There are 40 students in the class. How many students are girls?

asked Jan 7, 2020

1 answer

2 votes

114k views

Pleasse help thank you.

asked Aug 21, 2019

2 answers

1 vote

67.3k views

The wheel was invented about 2500 BC. The gasoline automobile was invented in AD 1885. How many years passed between the invention of the wheel and the invention of the automobile?

asked Aug 12, 2019

2 answers

0 votes

190k views

Which combustion equation violates the law of conservation of matter? A) CH4 + 2O2 -> CO2 + 2H2O B) C3H8 + 6O2 -> 3CO2 + 4H2O C) 2C6H14 + 19O2 -> 12CO2 + 14H2O D) 2C8H18 + 25O2 -> 16CO2 + 18H2O

asked Jul 18, 2019

2 answers

4 votes

235k views

Which statement is correct about matrix multiplication for square matrices? A) It satisfies the associative and commutative properties, but not the distributive property. B) It satisfies the associative

asked May 21, 2019

1 answer

1 vote

185k views

What new technology was invented and what effect did it have on World War One

asked Apr 16, 2019

1 answer

2 votes

156k views

Is natural selection more effective in small or large populations?

asked Sep 11, 2018

1 answer

0 votes

131k views

You have a 10kg bag of sand. the mass of a grain of sand is about 10 to the -3 power gram. about how many grains of sand are in the bag of sand

asked Jul 10, 2018

1 answer

2 votes

80.8k views

What is the anwser to this equation

asked Feb 22, 2018

2 answers

1 vote

143k views

What is 238cm into meters

asked Jan 5, 2018

2 answers

0 votes

11.8k views

I have 453 grams of strawberries I have 23 grams left how many grams of strawberries are left

asked Aug 17, 2017

1 answer

1 vote

134k views

0.000483 in scientific notation

asked Jul 28, 2017

1 answer

0 votes

112k views

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