All Answers 358514 Answers

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Oh? THEN GTFO!!!

GuestMar 12, 2014

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Get a life first.

GuestMar 12, 2014

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Oh, wow sander. You are so smart!!!

GuestMar 12, 2014

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GuestMar 12, 2014

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GuestMar 12, 2014

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GuestMar 12, 2014

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WHO FREAKING CARES??? NOT ME!!!

GuestMar 12, 2014

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Sorry, but "6" isn't correct.

We're substituting -1 for x in the expression x - 5.

Thus, -1 - 5 = -6

(Not "6")

GuestMar 12, 2014

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2x - 3 < x + 2 ≤ 3x + 5

Let's break this up into two parts.....

First.......

2x - 3 < x + 2 (add 3 to both sides)
2x < x + 5 (subtract x from both sides)
x < 5

Secondly.......

x + 2 <= 3x + 5 (subtract 5 from both sides)
x - 3 <= 3x (subtract x from both sides)
-3 <= 2x (divide both sides by 2)
-(3/2) <= x (which also means x >= -(3/2))

Thus.........-(3/2) <= x < 5

Or in interval notation...... [-(3/2), 5)

Try picking some values "outside" this interval. You'll find that they won't satisfy both inequalities!!

Good luck!! Hope this helps.

GuestMar 12, 2014

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There's nothing you can do. To solve any triangle, we need to know:

1. Three sides - we can use the law of cosines to find one of the angles, and the law of sines to find another.
2. ASA, AAS - The other angle is obvious We can use the law of sines to solve the other two sides.
3. SAS - We can use the law of cosines to find the remaining side and the law of sines to find the other unknown angle.
4. SSA - Be careful to account for the ambiguous case, here. We might have one, two or no triangles!!

Note.....just knowing the three angles doesn't help, either!!! There are no "laws" available to find any of the sides. (To see this, note that similar triangles have the same angles, but their sides are different. Thus, I could construct an infinite number of similar triangles - all of which would have different sides.)

GuestMar 12, 2014

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Your answer of 42 is correct. Let ST be the base and R be the apex point. Then, the length of the base is 12. This triangle is isosceles with RS = RT. A perpendicular drawn from the midpoint of the base, (4,-2), will go through R, so this is the height which, by the distance formula, is just = 7. Therefore, the area = (1/2)*B*H - (1/2)*(12)*(7) = 42.

2. The triangle is isosceles..

First, find the distances between AB, BC and AC using the distance formula.
AB = SQRT(52)
BC = SQRT(52)
AC = SQRT (104)

Since AB = BC, the triangle is isosceles.

3. This one should be pretty easy. Just use the distance formula to find the distance between the endpoints. This = SQRT(80) = 4*SQRT(5). Take half of this to get the radius = 2*SQRT(5)

Hope this helps.....

GuestMar 12, 2014

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GuestMar 12, 2014

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664
-367
-------
293

GuestMar 12, 2014

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7- (7/7)

= 7-1

= 6

GuestMar 12, 2014

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GIMME ANSWERS!!!

GuestMar 12, 2014

Mar 11, 2014

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try to pay attention every day. review the lesson in the book each night. look online for pointers on things you do not understand. You will be surprised at how many websites help. This one is good because most people try to explain how to get the answer instead of telling you. theres more, but heres some ways.

GuestMar 11, 2014

+8

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is this a trick question? 49 pi/3 should be as simple as you could make this Unless you are settling for an approximation of pi which could be used as 22/7. Since pi is irrational it should be left alone.

ezomMar 11, 2014

+135

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Irreverent Statistic:
What is the probability that "I like Serena" will make a comment on a question that either states the obvious or is trivial and useless.

My preferred mode of operation is to state the obvious, which then leads to ooh and aah - now I understand!
This is usually how mathematics works: once you see it, it is obvious and in retrospect you can't understand why you didn't see it before.
Ah well, often it helps if someone points out the obvious.

I like SerenaMar 11, 2014

+6252

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Quote:
How does a middle school student raise about $3000 in 3 months, with a busy schedule?

I'm gonna go ahead and assume you mean legally.

$1000/month @

@10 hr/week you need to make $25/hr

@ 24 hr/week you need to make $10.42/hr

do you have any skills that might net you >$20/hr?

RomMar 11, 2014

+6252

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Quote:
what is equvilent to (8x^3)(2x^5)

(8*2)(x ³ * x ⁵) = 16x ⁸

RomMar 11, 2014

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Nothing LOLish about this-

GET A LIFE!

GuestMar 11, 2014

+6252

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Quote:
IIf I know the tan value, how can I calculeate the corresponding angle? For example tan@=19, what is @?

if tan@ = 19 then

arctan(19) = @

this is also referred to as tan ^-1 and atan

RomMar 11, 2014

+142

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and for additionnal information...

X=number

% mean X/100

So here you have 35% = 35/100.

35/100 = 0,35 of a unit.

samgelinasMar 11, 2014

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GuestMar 11, 2014

+142

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Post your question first.

samgelinasMar 11, 2014

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