CYLR

Can someone help me factor this:

x + 4(√x) -5

and x^2 +12x+36-9y^2

Is there a formula or something, so far i have the volume of water from ice, the mass of ice, the temperature change, the mass of warm water, teh energy released by warm water as it cooled through T degrees, and the energy realeased/gram of ice melted

What volume of .125M HNO3, in milliliters is required to react completely with 1.3g of Ba(OH)2?

2HNO3+Ba(OH)2--->Ba(NO3)2+2H2O

You have .500 mol of KCL, some distilled water, and a 250 mL volumetric flask, Describe how you would make .500 M solution of KCL.

If you dilute 25.0 mL of 1.50 M hydrochloric acid to 500 mL what is the molar concentration of the dilute acid?

I honestly have no idea how to go about starting this problem, but i do know that i need to convert from mass to moles first, and i already did that, but what do i do afterwards, here is the problem:

A sample of limestone and other soil materials is heated, and the limestone decomposes to give calcium oxide and carbon dioxide. A 1.506g sample of limestone containing material gives .711 g of CaO, in addition to gaseous CO2, after being heated at a high temperature. What is the weight percent of CaCO3 in the original sample

True or false: Sprains are invisible on X-rays because they are too dense for the X-rays to penetrate

What part of the body provides flexibility of the torso and protects the spinal cord

f(x) = -2e^5x+1

f(x) = -1/4(e)^-3x

f(x) = 5(e)^(3x-9) -7

f(x) = 3/4e^(3x) -2

For the following problems use these functions:

f(x) = 5x^3/2 + x^1/2 ; g(x) = x ^1/2

f(g(x))= ?

f(f(x))= ?

(f-g)^-1(x) = ?

I've been workin on these problems for hours,but i just cant seem to figure them out, any and all help would be appreciated

1. In rabbits, spotted coat (S) is dominant to solid color coat (s), and Black (B) is dominant to brown (b). A brown spotted rabbit is mated to a solid black one and all the offspring are black spotted. What are the genotypes of the parents? What would be the appearance of the F2 generation if two of the F1 black spotted rabbits were mated?

2. Suppose that you learned that "shmoos" may have long, oval, or round bodies and that mating schmoos gave the following results:

long x oval ....... 52 long , 48 oval

long x round ...... 99 oval

oval x round ....... 51 oval, 50 round

oval x oval ........ 24 long, 53 oval, 27 round

What hypothesis about the inheritance of shmoo shape would be consistent with these results?

Data: ears erect (E) dominant over droopy ears (d)

barking (B) dominant over non-barking (b)

A dog homozygous for erect ears and for barking was crossed with a droopy eared dog that cannot bark. Work out the genotypes and phenotypes for the F1 generation.

Okay i would really like to know what the genotypes would be because this is what i think, but i'm not sure

EB for erect eared dog and db for the droopy dog, but i'm not sure

The problem is

8x+2y-z=-25

3x-3y+5z=10

-5x+6y-2z=17

I can't get a good answer, it always turns out into a decimal for one of the variables, and i think that's wrong, can someone help me out here?

ok so i had

3*(8x+2y-z=-25)

2*(3x-3y+5z=10)

then i turned that into

24x+6y-3z=-75

6x-6y+10z=20

so i cancelled out 6x and 6y and did the addition stuff so i got

30x+7z=-55

then i did

-3*(8x+2y-z=-25)

and that turned into

-24x-6y+3z=75 and the othr equatin was

-5x+6y-2z=17

so i cancelled out the 6y's again and did the addition and got

-29x+3z=92?where did i go wrong and how can i fix it?

Ok so this time, i got a harder one,

3x+2y-8z=4

6x+4y-16z=8

12x+8y-32z=16

Ok, so my teacher said the most efficient way to do this problem was via the addition method, so i did it, but i realized that when it all comes down to the cancelling things out, everything cancels out, so i don't know what that is? is that all reall numbers or no solution? can someone help me here?

The problem is

8x+2y-z=-25

3x-3y+5z=10

-5x+6y-2z=17

I can't get a good answer, it always turns out into a decimal for one of the variables, and i think that's wrong, can someone help me out here?

Suppose the Earth had a wire belt wrapped tightly around it at the equator. The length of this belt would be approximately 40,000km. Now, suppose we cut this belt and inserted an extra piece of wire 1metre long. If this new, longer belt is raised equidistantly all around the earth, how high above the ground would it be?

Also: What length of a piece of wire must we add to theEarth's belt so that, when it is raised equidistantly all around the Earth, an elephant 3m tall could walk under it?

All help would be greatly appreciated.

There is an equilateral triangle, and a segment that's length is 2/3 the length of a side of the triangle, describe the locus the segment would make if you had to move the segment, but keep it's endpoints on the equilateral triangle. All help would be appreciated, Thanks

What is the locus of points equidistant from the vertices of an isosceles trapezoid

What is the locus of points equidistant from the vertices of an isosceles trapezoid?

What is the locus of points 10cm from Point R, and 10cm from Plane X (remeber, it doesn't say point R is on plane X)

Imagine a room, it has a ceiling and a floor that's rectangular,

The locus of points is the distance from teh floor to the ceiling

Im starting to think it's a plane halfway between teh floor and the ceiling, but i don't know if it's a plane that stops, or goes on forever.

1.we have 2 skew lines, let's call them line 1 and 2, the locus of points is the distance between 2 lines. What's the locus?

2.Locus of points = Distance from floor to ceiling. We have a room, it has a floor and a ceiling. What is the locus? (for this one, i think it's a plane, but if the plane goes on forever, i don't think the floor and ceiling will be equidistant from every point on the plane, so, ive figured the locus is either a plane in between the floor and ceiling that goes on forever, or a rectangle in between the floor and ceiling,)

1. There is a square SQAR and a segment that's length is SQ(the segment isn't SQ, it's length is the lenght of SQ). THe segment moves so that it's endpts stay on SQAR. what is teh locus of the midpoint of the segment as it moves. (P.S. To clarify, i want the locus of how the midpoint moved, not the locus of the segment Thank you.)