### Math Arena

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- Workshop & Fun Challenge November 19, 2020
- Sec 1 Maths-Science Workshop & Fun Challenge for Post-PSLE Students! November 1, 2020
- 2020 Year End Holiday Program – Your Best Decision to Head Start AY2021! October 31, 2020
- Coding Courses are back this Year End School Holidays! October 29, 2020
- Centre Updates August 21, 2020
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- Securing Video Conference Meeting Lessons April 11, 2020
- Home Based Learning – All Levels April 9, 2020
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- Lessons Suspended from Tomorrow, 26th Mar till 30th Apr 2020 March 25, 2020
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- Happy Lunar New Year! January 25, 2020

Questions from Tina Hang – Secondary 1 Maths Questions

Question 1: y is directly proportional to x2 and y = a for a particular value of x. Find an expression for y in terms of a, when this value of x is doubled.

Question 2: The braking distance of a vehicle is directly proportional to the square of its speed. When the speed of the vehicle is b m/s, its braking distance is d m. If the speed of the vehicle is increased by 200%, find the percentage increase in its braking distance.

Hi,

A)How do we explain fully the greenhouse effect?

B) The greenhouse is a “model” of the greenhouse effect. What does the greenhouse and plants inside represent?

Greenhouse- Atmosphere?

Plants – Greenhouse gas or earth surface?

Thanks.

The greenhouse effect is an effect that is caused by greenhouse gases.e.g.carbon dioxide,chlorofluorocarbons.these gases which are also known as greenhouse gases,trap heat from escaping into the atmosphere outside of Earth thus he heat remains on Earth.Thus Earth would be hotter and this may lead to global warming…hope this helps.you may also search online for greenhouse effect if this explanation doesn’t help….

Thank you, I have recently been looking for info approximately this subject for ages and yours

is the greatest I’ve came upon so far. However, what

concerning the conclusion? Are you sure about the supply?