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At your hardware store, you buy hammers for $30 a dozen and sell them for $3.50 each. What is the percent markup for the hammers?

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Quicksilver cant even catch a bullet

Dc is better but for this match Marvel would win

because she had been recieving death threats so she went to the hotel so the person couldnt find her but the person did and she was scared for her life 

a = 2, b = 5, c = -12, d = 0

The polynomial $f(x)$ has degree 3. If $f(-1) = 15$, $f(0)= 0$, $f(1) = -5$, and $f(2) = 12$, then what are the $x$-intercepts of the graph of $f$?

\(f(x)=y=ax^3+bx^2+cx+d\)

\(P_1(-1/15)\\P_2(0/0)\\P_3(1/-5)\\P_4(2/12)\)

\(y=ax^3+bx^2+cx+d\)

\(15=-a+b-c+d\)                     

\(0=d\)

\(-5=a+b+c +d\)

\(12=8a+4b+2c+d\)

a, b, c, d from the four linear equations comes slightly later.

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If I have 5 cookies and I lose negative 8 cookies, how many cookies do I have?

If you give away a negative amount, that is the same as gaining that amount.

5 - - 8 = 5 + 8 = 13

[[210 ÷ (73)2] x 703 =

\(\frac{210}{73^2}\times703=27.7031\)

3(a + 3) - 2(a + 2)

Distribute.

= 3a + 9 - 2a - 4

Combine like terms.

= 1a + 5

= a + 5

The Pythagorean theorem is true for all right triangles.

(one leg)² + (other leg)² = (hypotenuse)²

This equation is always true.

The hypotenuse is, by definition, the side across from the 90º angle.

The legs are just sides not across from the 90º angle.

What made you think that it wasn't true for all right triangles?

0.12903225806

Thats ur answer 

He might of knocked becasue he was expecting his wife to answer the door.  He might not have taken the key with him.

I think the woman was just the suspicious type but the man should have shown some confusion. Instead he just condidently strided away, like he always knew exactly where he should (or should not) be. :)

Why would he KNOCK on his OWN hotel room? If it was his, he would have simply just used the keys to open the door.

The amount of radioactive material remaing can be found using the formula:

                          A(t)  =  A₀·e^kt

where  t  represents the time,

         A₀  represents the original amount

       A(t)  represents the final amount

          k  represents the rate of decay (k is negative)

If you have a particular problem, post the problem.

If it has straight sides, see if you can divide it into triangles and find the area of each of the triangles and add together these values.

If you have the log value (base 10), to find the antilog, use the (10^x) key.

Example:  if you have  log(x) = 0.3010,

                  using the (10^x) key:  10^0.3010  =  2 (approximately).

Without rounding:

Let             x  =  0.3535353535...

Then   100x  =  35.35353535...

Writing these in reverse order:  100x  =  35.3535353535...

                                                            x  =     0.3535353535...

Subtracting:                                    99x  =  35

Divide by 99:                                       x  =  35/99

First, hit the (2nd) button.

Then, hit the (atan) button.

Post your question!!.

base = 15 ft.

sin 48º = height/11.5  → height = 11.5sin48º ft.

area = (1/2)(base)(height)

area = (1/2)(15)(11.5sin48º)  sq. ft.

area = 86.25sin48º                 sq. ft.

area ≈ 64.096  sq. ft.

This is the most efficient way that I know of to create a box from a square. First cut along the pink lines. Use two of the cut off squares as bases. Then fold the paper along all the horizontal lines. And then glue/tape the bases on.

Now it can be made into a prism with length, width, and height as shown.

length = s/4

width =  s/4

height = 3s/4

volume of original prism = lwh

volume of original prism = (s/4)(s/4)(3s/4)

volume of original prism = 3s³/64

If we divide the original square into 4 squares, the side length of each square will halve.

volume of littler prism = 3(s/2)³ / 64 = 3s³/512

There are 4 littler prisms, so total volume of all 4 littler prisms = 4(3s³/512) = 3s³/128

volume of original prism : volume of all littler prisms = \(\frac{3s^3}{64}:\frac{3s^3}{128}=1:\frac12\)

So..the volume of all 4 littler prisms together is half the volume of the 1 big prism 

*edited because my first answer was messed up*

a stone is thrown horizontally with an initial speed of 10 m/s from a bridge. Assuming that air resistance is negligible, how long would it take the stone to strike water 80 m below the bridge?

The stone falls downwards with gravity, regardless of its horizontal movement.

\(freefall:\\v=gt\\s=\frac{1}{2}gt^2\\t=\sqrt{\frac{2h}{g}}\\v=\sqrt{2gh}\)

\(g=9.81m/sec^2\\h=80m\\\color{blue}t=\sqrt{\frac{2h}{g}}\)

\(t=\sqrt{\frac{2\cdot 80m}{9.81m/sec^2}}\)

\(t=4.04\ sec\) 

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