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I Need Help With A Math 990 Question

Math question! please help ASAP!?

Assume last year salary was 'x'
with 3% rise it will be 1.03x

solve for x

1.03x = 33990
x = 33990/1.03
x= 33000

Hope this helps !

Help With Math Question?

A school ordered $600 Worth Of Light bulbs . Some of the light bulbs costs $1 Each And the others Cost $2 Each . If twice as many $1 bulbs as $2 bulbs Were Ordered , how may lightBulbs Were Ordered Altogether ?

I need help with a math 990 question?

25f + 100c < 600

- .--

How do I work out the answers to mathematics questions like this? (Read details)

It is easiest to reason about what you know and don't know if you can draw a picture--- in this case, a Venn diagram.  You know the size of the set of people who like Pure, who like Applied, and who like Statistics, though these may overlap.  You know the size of Pure AND Applied, and you know the size of Pure AND Statistics.  You also know the size of Pure AND Applied AND Statistics.The final input given is a little hard to represent directly on the graph, we know that the union of (Pure and Applied) with (Pure and Statistics) and (Applied and Statistics) is 20.Now a basic rule we can use over and over again is that when [math]A = B \cup C[/math], and [math]B[/math] and [math]C[/math] do not intersect, then the size of [math]A[/math] is the sum of sizes of [math]B[/math] and [math]C[/math].  In particular, if we know the size of (X and Y) and the size of (X and NOT y), then we can sum them to get the size of X.So, in the digram above, we know that (Pure and Statistics) is 10, and (Pure and Statistics) and Applied is 8, so (Pure and Statistics) and NOT Applied, which I've labelled "z", must be 2.The same rule helps us calculate x, and then the last condition in the problem gives us y as well.Once we have x, y, and z filled in on the diagram, we can fill in the unlabelled components (those who like only one subject.)  For example, the number of people who like only pure mathematics is [math]19 - 8 -x - z[/math].One the diagram is complete (each intersection of Pure, Applied, and Statistics is filled in with the number of students), then the answers to the questions can simply be read off.  The last question refers to students who do not fit into any of these subsets, so we have to use the very first piece of information--- that the universe of discourse consists of 50 students.

I need some help on a math problem, please!?

T=Tarak and N=Nicholas
first lets find out will they be equal before anyone reaching a balance below 250
T=1100-25x=990-22x
x= number of weeks
solve for x
3x=110, x= 110/3 week
if you plug x back in
T=1100-25(110/3)=183.33
based on the answer, we know that they will not have an equal balance before reaching 250

so now lets find out how many weeks will it take to reach 250 or below
T=1100-25x=250
25x=880, x=34 weeks, this means at 34 weeks T will have exactly 250 bucks his account
Now lets find out how many weeks will it take N to reach 250 or below, and how much money he has at week 34.
N=990-22y=250
solve for y, y=370/11=33.6
based on that you know that at week 33 N have 990-22(33)=$264
If N withdraw again at week 34 there will be a $3 charge
so at week 34 => N=(990-(22)(34))-3=239
so from now on at week 35 or later they both will have $3 charge per week
new equation
T=250-(25+3)x=N=239-(22+3)x
solve for x, x=11/3 (remember the final answer u need to consider the previously 34 week)
since they equal at 34+11/3=35.83 weeks and its a fraction,
this means they will not have an equal amount in their account
To find the smallest amount difference, round 11/3 to 4
plug 4 into the equations
T=250-(25+3)(4)=$138
N=239-(22+3)(4)=$139
so 34+4=38 weeks they have $1 dollar different.


Extra:
T wants to make a payment before he runs out of money so,
T=1100-25x=$300
solve for X, X= 32

This means T should make his payment of $300 NO LATER than week 32

Fraction Questions Help Please?

Hi, I'm really stuck on these questions and I would really appreciate your help please.

x = 0.0242424...

Q1) What is 100x?
Q2) By subtracting the original value from your answer to Q1, work out the value of 99x.
Q3) Multiply both sides by 10 to get 990x and eliminate the decimal on the right-hand side.
Q4) Divide both sides by 990.
Q5) What is x as a fraction expressed in its lowest terms?
Thank You Very Much For Your Help!

Can you help with a word problem in math 990?

Leila will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $53.96 and costs an additional $0.15 per mile driven. The second plan has an initial fee of $65.96 and costs an additional $0.11 per mile driven. How many miles would Leila need to drive for the two plans to cost the same?

What equation would I use to set this up?

[Homework Question] A room is 6 m long, 5 m wide and 3 m high . The four walls and ceiling are to be painted. If the windows and door is 14 square meters, what area is to be painted?

Given A room with 6 m= long 5m= wide3 m= high And window and door =14 square metersSo the panted area= area of cuboid-areas of the floor- area of windows and doors =2(6*5+6*3+5*3)-6*5-14= 82m^{2}Math Homework Help

Please help with this math word problem!?

An inheritance of $16,000 was divided among three investments yielding a total of $990 in interest per year. The interest rates were 5%, 6%, and 7%. Find the amount in each investment if the 5% and 6% investments were $3000 and $2000 less than the 7% investment.

~I have two of the equations i just need the third

x + y +z = 16000
.05x + .06y + .07z = 990

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