Ms Pi_3.14159265358979

Drainage density is the total length of all the streams and rivers in a drainage basin divided by the total area of the drainage basin. It is a measure of how well or how poorly a watershed is drained by stream channels. ... High drainage densities also m...

7 years ago

For every cup of flour you need two cups of sugar... 1:2 1 cup flour to 2 cups sugar.

7 years ago

Google says "YES" : )

7 years ago

If you write out the points, then provide the mapping rules, you can check each new rule... You may have missed a negative sign in your original stating of the points :)

7 years ago

Do you know if you copy and paste your question into the search bar on this website you get over 4000 related answers...

7 years ago

Here is a hint... 12 x 12 = 144 Look at the other answers and see what comes to mind...

7 years ago

These ones are so much fun... because if you can "justify" why... then who is to say if you are right : ) Since b) c) and d) all have VOWELS that would mean that a) NMQP is the odd one out : )

7 years ago

The first thing I do when proof reading is... READ it out loud to myself. Have you done this? When you read something out loud to yourself often grammar errors and tense errors are found. I am not an English major so there are others on this website that...

7 years ago

Ratios can be written in 3 ways... 6 to 30 6:30 and 6/30 you usually reduce the ratio when in fraction form 6/30 = 3/15

7 years ago

What do you think? What does your text book say? What does an on-line google search say?

7 years ago

The formula is A=P(1 + i)^n and you have the accumulated amount of 1,311,000 you do need to know the "compounding effect" if it is per year then n=3 and A=P(1 + i)^n becomes 1311,000 = P(1 + .23)^3 1311000= P(1.23)^3 and you can now re-arrange and solve f...

7 years ago

This could be a really tough question (with some x values) if you don't know the length of the original iron pipe... Do you? If not you could work with the assumption of a 1 m pipe.

7 years ago

Great !

7 years ago

Correct : )

7 years ago

It asks for a "reliable source" thus a and d are obviously out. What do you think about b and c?

7 years ago

Parallel lines have the same slope. Find the slope of 4x-y=9 Use the new slope to obtain y = mx + b, that is y = 4x + b then sub in your (x,y) that is (7,6) and solve for b : ) as you are passing through that point. Then your equation is y=4x +b (with wha...

7 years ago

Is it a square base prism? If so then Volume = (93.5)(93.5)(height) that is, 1122 = (93.5)(93.5)(height) re-arrange and solve for height.

7 years ago

- 5 < w <= 9 (the second sign is a less than or equal toooooo sign : )

7 years ago

Correct : )

7 years ago

"Protractor Postulate" LOL! Nothing can be assumed to be drawn to scale! THat is... there is no such thing as a protractor postulate...

7 years ago

From 14:30 to 14:52 is a 22 minute wait. If that is how the charts are written.

7 years ago

You can draw the resultant from the tail of the first vector to the head of the second vector, and then use Trigonometry to solve it : )

7 years ago

Your question started with "round to the nearest whole number." A whole number has NO decimals... So... 10.3 is 10 and 1.46 is 1...

7 years ago

b and c are formed by using the Distributive Property on the factored form of the Quadratic. ax^2 + bx + c

7 years ago

Hint: Draw a picture and label it with all of the information you are given. What do you notice about the triangles inside the rectangle?

7 years ago

Let x represent the smaller number, and y the larger. You have two equations in 2 unknowns. Sentence one produces 1) x + y = 40 Sentence two produces 2) (x/4) + (y/12) = 6 Now you have to work to eliminate one variable. If you multiply the entire equation...

7 years ago

The h intercept is when time is 0, so if you set t = 0 you obtain h(0) = 490(0)(0) + 74(0) = 12 So the h intercept is 12 cm. That is, the log was 12 cm off of the ground. The t intercept is when the height is 0 so set h=0 and solve (factor) for t 0 = -490...

7 years ago

The domain and range can only be real life values, so the function can not have negative numbers in the solution of the sketch. Only the positive values would be measurements for a football field.

7 years ago

Wow! If we knew the correct answer to this one we wouldn't have a desktop full of folders. I personally didin't even know there was a "library" option on the computer. I would save to the "most appropriate folder", but .... that is because I am a dinosaur...

7 years ago

I "googled it" your answer of D is correct : )

7 years ago

Correct : )

7 years ago

This is a subtraction question... Do you have an answer you think? Board minus first cut minus second cut minus third piece : )

7 years ago

Sub "a" in where x is... A) 3a+1 = 2 -a and then solve for a B) where ever you see an "x" in the first function set it to be a^2, then in g(x) where you see the x let it be (2a) and then solve for a So you have 3a^2 + 1 = 2 - 2a move everything to the rig...

7 years ago

Check your textbook... Are they just asking you to re-arrange to get x all by itself, then to do the same and get y all by itself?

7 years ago

You need to do this in steps. 1) Figure out how many cookies you get when 20% must be discarded 2) Take the remaining cookies and work on the mark up. Also... if you look below there are other very similar questions to yours already done for you.

7 years ago

You are very welcome! It is great to see diligent students working on math : )

7 years ago

NO... because a binomial is "a mathematical expression with two terms" so... x^7 + 3 is a binomial... you will always get 5 terms, but the degree could be anything... (x^7...... )(x^2........) would give you an x^9

7 years ago

Think about a number line that starts at -3 and goes all the way to 7. How many numbers are there? You could also think about the difference in their positions to get the same answer 7 - (- 3), and that will give the range.

7 years ago

You check these two sets... 1,2,3,4,5 and 3,3,3,3,3 Find the mean, mode and median of each set. Then... create your own set that works : )

7 years ago

The question is asking you to take the written words and turn them into a mathematical equation... so... the words say... the result of multiplying a number by 3 and subtracting 5 is the same as doubling the number and adding 9 what is the number Start wi...

7 years ago

let h represent the cost of the hockey stick... The tennis racket costs the price of the hockey stick plus 12 ... so h +12 TOGETHER so add them they are .... (hockey stick) + (tennis racket) = $31 h + h + 12 = 31 now solve for h : )

7 years ago

You may either want the fraction full, the fraction empty, the number of seats full, or the number of seats empty... you have not actually asked a question. But... If we figure out how many seats are EMPTY at the end of the hour you can figure the rest ou...

7 years ago

I am not certain about the "lakhs" part... but You take the total volume of the original cylinder (pi)(r^2)(h) and then divide it by the volume of each of the spheres (and make sure you have the sphere of the ball as having a radius of .1cm) so your units...

7 years ago

So you have (-2) times by (-1)^19 = (-2) we know that it is -1 times by itself 19 times... so just -1 = and you figure out the rest : )

7 years ago

Depending on how the question is written, the order of operations would be done first. But... If you look at the subtraction you know that you have to find a common denominator. I would suggest changing the mixed number to improper. Order of operations wo...

7 years ago

Is this your question (6.2x10^4)(3.3x10^2) If it is, first multiply the numbers, then add the exponents, then re-write it in scientific notation (which is a number between 1 and 10)

7 years ago

Your choice... one variable or two? If you wish to use two variables... Let x represent the almonds and y the macadamia nuts. x + y = 12 4.25x + 9y = 74.75 Now if I was you I would re-arrange for x from the first equation and sub it into the second equati...

7 years ago

Since the zeros are listed... start with them : ) y= a(x+2)(x-3)(x-4) now you have the F(5) = 28 so set each of your x's to 5 and your y to 28 and solve for "a" : )

7 years ago

Correct : )

6 years ago

If you put together a Venn Diagram it will help you to see the solution you are looking for : )

6 years ago

Multiply the numbers 3.6 x 1.8 = 6.48 Add the exponents from the base of 10 (-5 + 2) = -3 THus your answer is 6.48 x 10^-3 Always recall that your answer in scientific notation must be a number between 1 and 10 : )

6 years ago

For question #1 we would have had to have read the same passage from a book (or poem). I do not know which story Mr Peters is in. For question #2 You are looking for an internal conflict. This one gets to be personal to you : ) It could be as easy as "The...

6 years ago

Many ways... one such way is that a teacher can "label" the areas and objects in the room so that when referring to the window, the word is printed right there : ) Same with "door", "chalk", "brush" etc. Even though the children can not yet read... they a...

6 years ago

YOu are almost correct. when you multiply (5x)(1/5) you get 1x and when you multiply (-2/5)(5x) you get -2x... so 1x - 2x gives the middle term of -1x : )

6 years ago

Do you know what the sketch looks like? It has a maximum at the vertex (because of the negative outside of the brackets). You might want to start with the intercepts. Set x = 0 and solve for y (that will be the y-intercept). Then for the x intercept set y...

6 years ago

One barrier might be your work ethic (with a poor work ethic your grades may be lower then needed to enter university). A second barrier might be the cost. University is approximately $20,000 a year in Canada (housing, food, books, and tuition). This may...

6 years ago

YOu now need to take the time to decide what your answers would be. Once you have done that, you will have to wait for a history tutor to come on line and check your attempts : )

6 years ago

Google says secondary....

6 years ago

Sub C = 75 in to your equation. Note: C=20 is room temperature. So C =75 is really hot. F= (9/5)X75 + 32

6 years ago

solar flares : )

6 years ago

Before you reduce top and bottom you need to state your restriction on the denominator. The denominator reads (5x+4)(5x-4) when factored. Set each to zero and solve for x then state the restrictions. Once that is done, then factor the numerator and see if...

6 years ago

YOu have to factor both the top and bottom of the rational expression. YOu must state restrictions on both variables (using the factored form of the denominator : )

6 years ago

Here is a hint: if you sketch out the floor plan you will see the entire area. Your joists will have to be all the way across the floor (to hold it up). And they are every 16 inches. If you break your floor up into 16 inch sections you will know how many...

6 years ago

So what is your question?

6 years ago

well... x^2 is (x - 3)^2 = (x-3)(x-3) = x^2 -3x -3x +9 = x^2 - 6x + 9 So... does that help you? Look back at what the question says... then use my hint.

6 years ago

#5 is a great one to start with since you now know that y=mx + b where m is the slope and b is the y-intercept : )

6 years ago

4 9/6 - 4 4/6 = _______ meters The first ribbon is over 5 meters, while the second ribbon is almost 5 meters long. 9/6 - 4/6 = 5/6 (hint: remember to just subtract the numerators (the top portions) ANd the 4 m - 4m = 0 so the final answer is that one is 5...

6 years ago

You know that perimeter is L + L + w + w and that is equal to 44 so your first equation is 44 = 2L + 2w and your second equation is Area and your formula is L x W So 117 = L x W is your second equation. 44 = 2L + 2w is your other equation : ) Now dependin...

6 years ago

1/2 times by 2/3 that is, two thirds of one half is left : )

6 years ago

I personally would change the MIXED fraction 7 2/3 to an improper one... 3x7+2 gives the numerator. So 23/2 x 3/8 you can multiply across the top and across the bottom to get your answer : )

6 years ago

Are you using ^ to indicate "to the power of"? if so... it appears you are asked to simplify 3 times the root of 750... but then with no brackets it gets a wee bit muddy... please advise.

6 years ago

In order to get a rocket ship up into space... all of your "number work" has to be exactly spot on... Lives are at stake... So... sometimes you don't see the big picture (Saving the planet, exploring space etc). And we need good mathematicians to get thos...

6 years ago

You are not correct...yet! THe 6 is correct, but remember that you have 10^4 x 10^3 that is 10x10x10x10 x 10 x 10 x 10 thus 10^7 So which answer would you now choose?

6 years ago

Yes : )

6 years ago

We can not see the picture, thus are unable to help. If the new picture is BIGGER then it is an enlargement. You chose scale factor 3, so check an original point and see if it is increased by a factor of 3 : ) Hope this helps, again... we can't see the tr...

6 years ago

Well... one inch is 25 miles.... so 1/4 inch more is 1/4 more than 25 You could also set up a proportion and solve (inches/miles)=inches/miles 1/25 = 1.25/x and solve for x : )

6 years ago

Plot your points. To find the line of best fit you try to do the following things 1) Use a ruler to see where the line fits (you try for about half the points above the line and half the points below the line). 2) See if your ruler will hit two points whi...

6 years ago

I plotted your points... So I have a line of best fit in mind. It "may" be very similar to your line. Let me know two points your line goes through : )

6 years ago

Your teacher is using (y2 - y1)/((x2-x1) thus your numbers are correct. Reiny will get the same result but his work looks a bit different. Both are 100% correct, it is whichever you are most happy with : )

6 years ago

First multiply both sides by 9/5 as this will clear out the fraction from the right hand side. 9/5(C)= F - 32 now add 32 to both sides (this will get F all by itself on the right hand side) (9/5)(C) + 32 = F And voila! You can live happily in Toronto : )

6 years ago

Look at the whole numbers first... 5+5 = 10 but then you have to add the fractions. 9/13 means 9 pieces in a pan cut for 13 pieces. The second pan is also cut to fit 13 on the pan but you have 9. So in total you have 9 + 9 pieces on a pan made for 13 piec...

6 years ago

7 1/2 divided by 6, if you convert your mixed fraction to entire you have 15/2 divided by 6 ...

6 years ago

What is the largest number that divides evenly into both the top and bottom of the fraction? You are reducing the fraction : ) Letter D is not correct.

6 years ago

Correct : )

6 years ago

What would your answers be to each of the 10 questions? We can help you if you try to make a go of it first : )

6 years ago

Hint: #6 is conceptual while #1 is practical

6 years ago

PS... I will be off line for a while (as it is Christmas Day) and we have a house full. Once you have thought about your answers I am sure another tutor would be happy to look them over for you.

6 years ago

Start with your Venn Diagram of the three intersecting circles. The 4 goes in the very middle, and work your numbers outwards. What answer do you get?

6 years ago

Take the entire volume and subtract off the volume of the triangular prism formed by the slanting portion : )

6 years ago

The positive answer to subbing in |-5 - 7| Remember that absolute value is the positive solution.

6 years ago

It might help to think about what an absolute value graph looks like :)

6 years ago

Happy New Year one and all! This are GREAT rules! I have taught on-line courses for York University in Canada and even at that level of education some people could use a refresher about "online etiquette". Thanks so much for sharing :) Yours in Mathematic...

6 years ago

So... 6X5 is 30 so 6(5x) = 30x

6 years ago

You need the vertex : ) Either factor to find the zeros then find the halfway point between them (sub in the x-value and solve for y) or use x = -b/(2a) to find the x-coordinate of the vertex : ) Your choice...

6 years ago

WHat do you think? If you use the method of substitution and sub y=x-4 into the other equation you get an 'interesting' result. What does the result tell you about the number of solutions?

6 years ago

Factor the Trinomial : )

6 years ago

Does the entire 476 repeat? For example .476476476...

6 years ago

If so then in fraction form it is (476)/999 which does not reduce. So B = 999 and A=476 B-A = ...

6 years ago

Your clue is that it says "LESS than $20" With that clue... which do you think it is?

6 years ago

#2 should be A,B,C, and D as they are all learning, but if asked for ONE answer it would be A What do you think for #1?

6 years ago