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For each of the following arguments, explain whether correct reasoning is used.a.) Hanoch is rich because he doesn't pay taxes and he doesn't pay taxes because he is rich.b.) All mammals have a backbone and species A has a backbone, so it must be a mammal.c.) All mammals are warm blooded and species A is a mammal so species A is warm blooded.d.) Peter said an election will be called this spring, but he is a liar so there will be no election.

Posted 3 months ago by **npaulovich** in Math 20-2 | 3 answers

#logic and geometry

Will a mutation on the SENSE strand changes anything? During replication, it is only the ANTI-sense strand is transcribed.

Posted 3 months ago by **John111** in Biology 30 | 5 answers

#mutations #dna

The exact solutions to the quadratic equation 0 = 6x^{2} - 9x - 3 can be written in the form x=p+q√r. What is the value of p+q+r?

Posted 4 months ago by **emily** in Math 20-2 | 3 answers

#quadratic equations

a. Explain how to determine whether you should shade above or below a boundary line on the graph of an inequality. [1 mark]

b. John is working to earn money to go on a ski trip. He wants to save at least $480. John works at the local swimming pool and makes $40 per hour lifeguarding and $20 per hour teaching swimming lessons.

i. Determine an inequality that would represent this situation. [1 mark]

ii. Draw a graph of the inequality to show the number of hours spent working at each task so that John can earn at least $480 for his ski trip.[2 marks]Click here for a pdf of a blank grid to print off.

iii. Select a test point above the boundary, explain using the graph whether the test point is part of the solution. [1 mark]

iv. Select a test point below the boundary, verify algebraically whether the test point is part of the solution. [1 mark]

Posted 4 months ago by **faresm02** in Math 20-1 | 2 answers

#inequalties

how do you balance equations?

Posted 4 months ago by **jade** in Science 10 | 4 answers

#balance #science #single replacements reactions

Gary is a fitness trainer who makes 30 and 45 minute appointments

with clients. Gary’s contract allows him to make up to 30 hours of

appointments in a week. State the inequality that represents all the

possible combinations of appointments that Gary can make in a

week. Graph the inequality.

Posted 4 months ago by **faresm02** in Math 20-1 | 6 answers

#inequalties

A mass of 55.0kg is 225m above the ground with a velocity of 36.0 m/s. Use conservation of energy to calculate is velocity when it reaches a height of 115m above the ground. Ignore the effects of air resistance.

Posted 4 months ago by **Em2019** in Physics 20 | 3 answers

#velocity #work and energy

Determine the amount of work that must be done to accelerate a 820kg car from 10m/s to 30m/s

Posted 4 months ago by **Em2019** in Physics 20 | 3 answers

#acceleration #work and energy

An electrochemical change occurs when a strip of nickel is immersed in an acidified solution that contains dichromate ions.

The colour change that occurs as the reaction above proceeds is:

Posted 4 months ago by **jaejae1717** in Chemistry 30 | 1 answers

#chemistry 30

several methods of determining the roots of a quadratic equation were discussed in lesson 2.3. select one of the methods to determine the roots of the equation 5x^2+2x+15=4x^2+13x-15. verify the roots.

Posted 4 months ago by **npaulovich** in Math 20-2 | 4 answers

#quadratic equations #quadratic functions