Math
posted by Joey .
how can you use 2 x 8 to find 4 x 8

4 = 2*2
so
4*8 = 2 * 2 * 8
or 2 * 16
Respond to this Question
Similar Questions

Math
Use properties of logarithms to find the exact value of this expression. Do not use a calculator. 6log6 8  log6 7 
math
Rewrite the equation so that y is a function of x: 1. 2/3y+4=2x 2. 1/2(y+5)+4x=3x 3. Use the result in Ex. 1 to find y when x= 1, 0, and 2. 4. Use the result in Ex. 2 to find y when x= 1, 0, and 2. Thank you very much for any help. 
Discrete Math
I am really stuck on these problems. I've worked a lot of them but I can't get these. Sometimes I think I know the answer but I can't show how I got it. 1.) Solve each matrix equation for X. 2X + 5A = B 2.) Find the following matrices: … 
math
Triangle ABD in the diagram has a right angle A and sides AD = 4.9cm and AB = 7.0cm. side AB is extended to C so that ABC is a straight line. a) use pythagoras theorem in triangle ABD to find the length of BD. b)use trigonometry in … 
Math
When you use the quadratic formula (x= b+/=......) can you use that on equations like X^4+2X8? 
Math
Suppose that y is directly proportional to x. a. Use the given information to find the constant of proportionality k. b. Then use y=kx to find y for x=6 y=58 when x=7 
math
In a recent survey of 100 women, the following information was gathered. 33 use shampoo A. 37 use shampoo B. 49 use shampoo C. 12 use shampoos A and B. 5 use shampoos A and C. 9 use shampoos B and C. 2 use all three. Use the figure … 
MATH
How can I find the vertex, axis of symmetry? 
math
Use rounding to estimate the product 12*9. Then, use compensation to find the actual answer. If Alison was rounding to find how much 12 books that were $9 apiece cost, would she get a good estimate? 
math
Use Gauss's approach to find the following sums ( do not use formulas). A. 1+2+3+4+...1001 B. 1+3+5+7...+99.