2,570 Answered Questions for the topic Maths

Maths

08/18/15

0 0 Arnold imports invest $400,000 at 8% p.a simple interest
1) How many years will it take for the investment to triple in value?2) How much is the investment worth if it triples in value?3) How much interest is earned?4) Calculate the time for the... more
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Maths

08/17/15

Arnold imports invest $400,000 at 8% p.a simple interest
1) How many years will it take for the investment to triple in value? 2) How much is the investment worth if it triples in value? 3) How much interest is earned? 4) Calculate the time for the... more
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Maths

08/17/15

Annette invests $4,000 for three years at 5.7% p.a simple interest
Please can someone help me find 1) the total amount of interest that Annette will have collected at the end of the 3 year period. 2) How much money Annette will have in total after the 3 year... more
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Maths Algebra

08/17/15

i need to evaluate 80 divided by 4 multiplied by (2-4) divided by 40
 Please help
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Maths

08/17/15

Factorise: (2a-3b)(p+q)+(a-b)(p+q)
My maths I need help on this beacuse i cant calculate well enough
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Maths

08/16/15

fraction subtraction
At the start of your journey you have 1 3/10 litres of petrol. At the end you haveused 7/15 of a litre of petrol. How much petrol do you have left?
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Maths

08/16/15

fraction addition
 you have 2 length of cable one is 3 5/6m and one is 1 1/4m   how many metres do you have? 
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08/16/15

Question: There are 6 boys and 8 girls in a drama club. Determine the number of ways to select 1 male lead and 1 female lead for a school play.
Permutation & Combindation
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08/14/15

If the period is PI - Mathematics
How would I calculate whether a period is PI? Is there an equation? I have a question on an assignment which asks to find out where the period is equalled to PI. 
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Maths

08/13/15

Can anyone guide me more about integration?
Guide me about how to find the area of shaded region in integration
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Maths Equation

08/12/15

Equations in a
1. Expand (a - 1/a)2 2. If a > 1 and a2 + 1/a2 = 706/225, find the value of i) a - 1/a ii) a + 1/a iii) a
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08/12/15

Cars driving in opposite directions on the same road, what time do they pass each other?
Car A begins to drive from Town A to Town B at 9 am. Car B leaves from Town B to drive to Town A via the same road as Car A at 9:17 am. After the two cars pass each other, Car A takes 10 minutes to... more
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Maths Probability

08/11/15

Gary drives to work everyday, and estimated the probability that he gets a red light at a particular intersection is 3/10. He based this on his last 10 trips.
I need to carry out a simulation on excel spreadsheet on my case to obtain the number of red lights he will encounter at this intersection on his next 100 trips. Can anyone help please.
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Maths Probability

08/11/15

Gary drives to work everyday, and estimated the probability that he gets a red light at a particular intersection is 3/10. He based this on his last 10 trips.
I need to carry out  a simulation on excel spreadsheet on my case to obtain the number of red lights he will encounter at this intersection on his next 100 trips. Can anyone help please.   Thanks
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Maths

08/11/15

In a clothing factory, 28% of the employees are female. There are 672 female employees. How many employees are there in total?
i have this question and i dont know how to figure it out for y maths test tomorrow  
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08/10/15

compound interest
Quan has 20,000 to invest over the next three years. He has the choice of investing his money at 6.25% simple interest or 6% compound interest  A) calculate the interest that quan will earn if he... more
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08/10/15

after investing $5000 into a simple interest account for 2 years, Josephine received $5890. what percentage p.a did she get?
Please show working out 
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Maths

08/07/15

Poppy has 30 beads.the probability of taking out a red bead is 0.4. How many red beads are there?
It's so hard  
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08/07/15

Daniel bought a new sweatshirt at the store when they were having a 10% off sale.
If the regular price of the sweatshirt was $16, how much did Daniel pay with the discount?
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Maths

08/04/15

A dam has a capacity of 302,470 litres. At present it is 58% full. How many more litres of water will the dam need to reach 100% capacity?
Please anyone who can solve this question and show me how. Thanks so much!
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08/01/15

Find the x value - 4^x = 6
4x = 6   What is the method to find x?
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08/01/15

Log6(6) + 2 Log 10 - 5 In e + Log 1
Log 6(6) + 2 Log 10 - 5 In e + Log 1  = Log 1 + 2 Log 1 - 5 In 1 + Log 0  = 1 + (2*1) - (5*1) + 0 = -2
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07/30/15

3 questons
value of x that results in the required y value5x2=7 x=1, 1.1 ,1.2 ,1.3, 1.4, 1.5y=x2-7x+10=5x=0.5, 0.6, 0.7, 0.8, 0.9, 1y=3x2-5x=2x=1, 2, 3, 4, 5, y=
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07/30/15

please help me
value of x that results in the required y value5x2=7 x=1, 1.1 ,1.2 ,1.3, 1.4, 1.5y= x2-7x+10=5x=0.5, 0.6, 0.7, 0.8, 0.9, 1y= 3x2-5x=2x=1, 2, 3, 4, 5, y=
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07/30/15

need help on this
value of x that results in the required y value 5x2=7  x=1, 1.1 ,1.2 ,1.3, 1.4, 1.5 y=   x2-7x+10=5 x=0.5, 0.6, 0.7, 0.8, 0.9, 1 y=   3x2-5x=2 x=1, 2, 3, 4, 5,  y=    
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