urgent math

1. Simplify the expression 7^9/7^3
a.7^3***
b.7^6
c.7^12
d.1^6
2. Simplify the expression z^8/z^12
a.z^20
b.z^4
c.1/z^-4
d.1/z^4
3. Simplify the expression (-3^4)/(-3^4
a.(-3)^1
b.0
c.1
d.(-3)^8
4.Which expressions can be rewritten as 1 over the base raised to a positive exponent? 2
a.b^-2/b^4
b.w^5/w^-3
c.5^3/5^5
d.4^7/4^7

1. 2.c?
3.c
4.a and d?

posted by Connexus
2. #1. 7^(9-3) = 7^6
NOT 7^(9/3) = 7^3
subtract exponents when dividing numbers. What you have is

7*7*7*7*7*7*7*7*7
------------------------
7*7*7

only three of the 7's cancel

#2
z^8/z^12 = 1/z^4 = z^-4
So, D, not C

#3 ok

#4 not sure what that trailing 2 means, but
a.b^-2/b^4 = (1/b^2)/b^4 = 1/b^6
b.w^5/w^-3 = w^5 * w^3 = w^8
c.5^3/5^5 = 1/5^2
d.4^7/4^7 = 4^0 = 1
Looks like A and C both work.

posted by Steve
3. Thank you so much steve

posted by Connexus
4. could you help me with a few more questions?

posted by Connexus
5. 1. x^9/x^2
a.x^11
b.x^7***
c.7
d.x^5
2.h^14/h^5
a.h^-9***
b.1/h^9
c.h^19
d.h^9
3.4^4/4^6
a.-16
b.16
c.1/16***
d.-1/16
4.5^0
a.0***
b.5
c.1
d.-5
5.7^4/7^2_____49
a.<***
b.>
c.=
d. none of the above
6.-2r(8r+5)
a.-16r^2+5
b.-16r^2+10***
c.-16r^2-10r
d.-16r^2-10
7.2a(a^2+4a)
a.2a^2+6a^2
b.2a^3+8a^2
c.2a+6a
d.2a^3+6a^2***
8.(3y)(3y-2)
a.9y^2-6
b.9y^2+5y
c.9y^2+1***
d.9y^2-6y

posted by Connexus
6. 100% thank you Steve

posted by kneegrow
7. 1.B
2.D
3.C
4.A and C
100%

posted by Martha
8. ^^ THANK YOU SO MUCH MARTHA I GOT 100%

posted by aye
9. steve is right i got a 100%

1. B
2. D
3. C
4. A and C

posted by Zurai

First Name

Similar Questions

1. algebra

am I right? 1. Simplify radical expression sqrt 50 5 sqrt ^2*** 2 sqrt ^5 5 sqrt ^10 5 2. Simplify the radical expression sqrt 56x^2 28x 2x sqrt 14*** 2x sqrt 7 sqrt 14x2 3. Simplify the radical expression. sqrt 490y^5w^6 2 sqrt
2. Algebra

1. Simplify the expression 4 3 — - — x x 2. Simplify the expression 6 4 — + — c c² 3. Simplify the expression 3y 9y — ÷ — 4y - 8 2y² - 4y 4. Simplify the expression: ( 2x³ - x² - 13x - 6 ) ÷ ( x -3 )
3. Algebra

Simplify radical terms, including fraction power expressions. Review the expression below and describe how to simplify the expression: 16 1/2 Please help, I just do not know how to explain this.
4. Algebra

1. Use the Distributive Property to simplify the expression. (-1) (4-c) 2. Use the Distributive Property to simplify the expression. 4 (2 x - 4) 3. Use the Distributive Property to simplify the expression (10+4y) 1/2 4. To which
5. Algebra

1. Use the Distributive Property to simplify the expression. (-1)(4-c) 2. Use the Distributive Property to simplify the expression. 4(2x -4) 3. Use the Distributive Property to simplify the expression. (10 + 4 y) 1/2 4. To which
6. Algebra

Translate the phrase to mathematical language. Then simplify the expression the difference between 119 and -40 What is a numerical expression for the phrase?_________(Do not Simplify) Now simplify the expression
7. math

application of the laws of exponent. show different ways of simplifying each of the following expression. answer the question that follow. 1. 2^5 * 2^4 2. x^4 * x^7 3. (3^2)^3 4. (m^4)^5 5. (5^3 * 2^2)^2 1. how did you simplify

9. math

translate the phrase into a mathematical expression and then evaluate it. sixtten squared divided by four cubed. The given expression in symbols is? (do not simplify. type exponential notation with positive exponents.) Evaluated,
10. Algebra

Simplify radical terms, including fraction power expressions. Review the expression below and describe how to simplify the expression: ã100 Please help, I just do not know how to describe this.

More Similar Questions