**Solving a log equation** Not rated yet

Solve for x if
0 = 72 - 5*t*ln(o.045*t) - 0.5*t where 0

**Do I multiply or divide?** Not rated yet

nita makes 8 trays of sticks, using 216 sticks for each. how many sticks did she use?
Multiply 8 with 216 should give you the answer to how many sticks …

**speed, time & distance** Not rated yet

a train cover a distance of 780 km at the speed x km/hr. had the speed been (x-5) km/h the time taken to cover the same distance would have been increased …

**Synthetic Division Help?** Not rated yet

How do you divide 4x^4-5x^3-11x^2+20x=12 by x+2? Please explain, I don't just want an answer I want to know how to do this. All the examples I found …

**Maths Problem Sum** Not rated yet

http://www.math-problem-solving.com/angles-gcse-higher-question.html
Hi Guys,
Not sure whether is this the right place to post my questions.
Nevertheless, …

**motion** Not rated yet

A motorist averages 30 kph on ordinary roads and 12 kph on roads under repair.
His average speed for a distance of 50 km is 24 kph. What length …

**permutation** Not rated yet

My question is that, In how many ways can 5 people line up in a group picture if the 2 want to stand next to each other?

**How to compare the wastage of a wheel** Not rated yet

I have been using different type of abrasive cutting wheels for my day to day jobs.
I want to find-out which brand wastage is much less compared …

**algebra** Not rated yet

the question is 6.9 equals 45 whats the value of it

**Word Problems, Grade 9** Not rated yet

Ashlee had 10$ less than three times as much money as jessica had. Ashlee gave Jessica $20 so that Ashlee had exactly twice as much money as Jessica. …

**mean numbers** Not rated yet

The mean age of 3 people is 42.
Another friend joins and the mean age drops to 40.
What is the age of the new friend?

**fractions** Not rated yet

3 friends share 4/7 pizza, how much does each friend get?

**Surds GCSE Higher Question** Not rated yet

Surds GCSE Higher Question
Please submit your answer here or on the FB wall, thank you in advance folks!
Rakiya
Editor

**accounting** Not rated yet

If total assets increased $150,000 during the year and total liabilities decreased $80,000, what is the amount of owner's equity at the end of the year? …

**ALGEBRA QUESTIONS ** Not rated yet

1. If x + 1/x = 2 find 8 x3 = 1/x3
Options 48,40,88,44
2. If X= 2-21/3 +22/3 FIND X3-6X2-18X+18
Options 22,40,33,45
3. IF X2+Y2-4X-4Y+8 …

**CRACK THE CODE.** Not rated yet

FIND THE VALUES OF THE FOLLOWING,( NUMBER 2 IS NOT IN THE FINAL CODE )
A + B = 9
A + D + E = 6
E + F = 7
C + D =2
A X E = 4

**percentage** Not rated yet

Hello, I have a question on percentages. Any help would be appreciated
In an exam in which full marks were 500,
A got 10% less than B.
B got 25% …

**what is circumference** Not rated yet

how do you work out:
d=4 what is the circumference
circumference= 2×∏×r
if d=4, then the r which is radius is half of d, is 2.
So, the answer is …

**Area and Volume ** Not rated yet

The volume of a cone is 512/3.
The cones length and radius are equal. Calculate the length and the radius

**2y=12x-3 Rearange into y=mx+c** Not rated yet

Rearrange this equation into the form y=mx+c.
2y=12x-3
Answer to this Sally:
Divide the whole line by 2 will cancel the left side. Hence looking …

**26.5% of 123** Not rated yet

How do you do this problem step by step.
26.5% of 123
Solution
26.5 × 123 = 3259.5
3259.5 ÷ 100 = 32.595
answer 32.595
Rakiya
Editor …

**Find the surface area and volume of..** Not rated yet

Find the surface area and volume of swimming pool described below:
The pool is a rectangular shape: 70 ft x 140 ft
The shallow end starts at 3 ft …

**Impossibly Easy?** Not rated yet

What number when multiplied by double itself is a negative number?

**Using number 4** Not rated yet

Use four 4s and any of the four operations to make the numbers 1,3,5,7,9,10

**Number Pyramid, value of y?** Not rated yet

What is the value of y? In this number pyramid. Y is the top.
Y
16, 5
25, 10, 3
50, 20, 8, 3
I'm confused.

**alphabet puzzle** Not rated yet

If A=2, M=26 and Z=52,then BET=?
a. 44
b. 54
c. 64
d. 72
e. 78

**Operations Puzzles** Not rated yet

Fill in each blank with one of the digits from 1 through 9 to make a true statement. Each digit may be used only once.
_/_x_+_x_x_/_+_x_=100
…

**solving for n: t=2n+2z** Not rated yet

solve for n: t=2n+2z
Answer:
subtract both sides by 2z, t-2z=2n
Then divide both sides by 2, (t-2z)/2=n
Therefore solution is n=(t-2z)/2 …

**' what are the odds '** Not rated yet

A man holds 3 cards in his hands, 2 aces and a jack. He shuffles the cards and then places them face down onto a table. He asks his friend to randomly …

**Triangular Matrix** Not rated yet

A. Now consider the product P = ST R S, where S is an upper triangular matrix having 0 everywhere except 1 on the main diagonal and ?1 on the first …

**Probability fraction spinner question** Not rated yet

Adam has found a spinner which has five colours on it where each colour is equally likely to come up. Adam decides to make his own
Adams spinner …

**Math ratio question** Not rated yet

The ratio of the number of 20-cent coins to that of 50-cent coins in a bag is 7:4.
The total amount of coins in the bag is $81.60.
What is the …

**Adding decimals** Not rated yet

-3.3+(9.1)=??
Answer:
Swapping the numbers over so as to subtract instead will give the same answer as above, +9.1-3.3=5.8
More info on adding …

**Speed distance and time problem** Not rated yet

From restaurant to house A,distance is 25km.time is 20 min but must change to hour so is 1/3 hour.
a)so speed= to distance/time= 25/1/3hour=75km/hour.ANS:75km …

**How do you simplify -9-6(-v+5)** Not rated yet

How do you simplify -9-6(-v+5)
Answer:
First multiply out the bracket with the -6
-9+6v-30 (remembering that -ve and a -ve is a +ve more info …

**Trigonometry Queries, Please help** Not rated yet

http://www.tki.org.nz/r/ncea/maths2_8D5_9mar09.pdf
this has the questions.
please answer the ones below and show working thanks,
Q3a,and b.
…

**algebra** Not rated yet

The cost of 2 balls,3 bats and 8 pair of gloves is 2500.
While cost of 4 balls,5 bats and 10 pair of gloves is 4000.
Find cost of each bat? …

**Products** Not rated yet

The product of 7/16 and a number x is 1. The number is?

**Applying Trigonometric Functions** Not rated yet

a) Given functions y = a^x and y = (1/a)^x where x is real and a>1, draw graphs to illustrate the relationship between the two functions and describe this …

**distance/time problem** Not rated yet

After the brakes are applied, the distance a train travels before coming to rest varies as the square of the speed of the train at the instant the brakes …

**MATH WORD PROBLEMS** Not rated yet

3 numbers are such that the second number is 4 more than 3 times the first, and the third numbers is 12 less than the sum of the first two number. The …

**sets** Not rated yet

A total of 130 ppl sat for exam, Biology, Physics & Chemistry. Results as below,
31 pass Biology & Chemistry
25 pass Biology & Physics
…

**Negative Exponents ** Not rated yet

The half-life of a radioactive form of calcium is 1 second. If you start with 180 grams, how much will be left after 2 seconds?

**Truth Table** Not rated yet

Use a truth table to test the validity of the following argument.
If you invest in the Gomermatic Corporation, then you get rich.
You didn't invest …

**answer checks** Not rated yet

i have to find the scalar and vector projection of a=i-j+k and b=2i-j-2k
and i got:
Vector proj = (1/3)(i-j+k) = i/3 + j/3 + k/3
scalar proj = (1/9)(2i-j-2k) …

**sequence question** Not rated yet

What are the values of x in the following sequence. X,X,15,16,23,31,111,X

**problem solving** Not rated yet

Your search for alana has 7 childen and bought a $9.95 shirt for each of them.
The cashier charged her an additional $13.07 in sales tax. She …

**SAT's Level 3 Question on Ratio** Not rated yet

I fill a glass with orange juice and lemonade in
the ratio 1: 4
I drink of the contents of the glass, then I fill the glass using orange …

**An inequality conundrum (for me)** Not rated yet

I have an inequality problem (I think). I am not a young person, I am doing something in finance and I have forgotten if I ever knew how to solve …

**Poisson distribution** Not rated yet

I am having trouble answering this question:
a local council has data concerning the number of children on free school meals and the number of households …

**Arithmetic** Not rated yet

The geometric rate of growth of sales for a company for the first three years was 25%.
For the next three years was 40%. Is the claim of average …

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