Unit 5 Corrections

Which expression is equivalent to  $\sqrt{147}$  

•  $3\sqrt{7}$  

•  $7\sqrt{3}$  

•  $21\sqrt{7}$  

•  $49\sqrt{3}$  

Which expression is equivalent to  $\left(xy^6\right)^2$  for all values of x and y where the expression is defined?

•  $xy^{36}$  

•  $xy^{12}$  

•  $x^{2\ }y^{-12}$  

•  $x^2y^{12}$  

Tags

CCSS.HSA.APR.A.1

The expression  $\left(x^{22}\right)\left(x^7\right)^3$  is equivalent to  $x^p$  . What is the value of p?

• 87

• 43

• 32

• 220

Tags

CCSS.HSA.APR.A.1

 The area of a rectangle is $54x^9y^8$ square yards. If the length of the rectangle is  $6x^3y^4$  yards, which expression represents the width of the rectangle in yards?

•  $9x^3y^2$  

•  $48x^6y^4$  

•  $9x^6y^4$  

•  $60x^{12}y^{12}$  

Tags

CCSS.HSA.APR.A.1

 The expression $\left(x^3\right)\left(x^{-17}\right)$ is equivalent to  $x^n$  . What is the value of n? 

• -21

• 14

• -51

• -14

Tags

CCSS.8.EE.A.1

Which expression is equivalent to $\left(7x^3\right)^2\left(x^8\right)^{\frac{1}{2}}$  ?

•  $14x^{10}$  

•  $49x^{10}$  

•  $14x^7$  

•  $49x^7$  

Tags

CCSS.HSA.APR.A.1

 Which expression is equivalent to $\frac{14a^4b^6c^{-10}}{8a^{-2}b^3c^{-5}}$ ?

•  $\frac{7a^2b^3}{4c^{15}}$  

•  $\frac{6a^2b^9}{c^{15}}$  

•  $\frac{7a^6b^3}{4c^5}$  

•  $\frac{7b^2c^2}{4a^2}$  

Tags

CCSS.HSA.APR.A.1

 A circle has a radius of $6x^9y^5$ cm. The area of a circle can be found using  $A=\pi r^2$  . What is the area of this circle in square centimeters?

•  $12\pi x^{18}y^{10}$  

•  $36\pi x^{18}y^{10}$  

•  $36\pi x^{11}y^7$  

•  $12\pi x^{11}y^7$  

Which expression is equivalent to $\frac{45m^{-6}p^2v^{12}}{15m^{-2}p^8v^{-4}}$  for all values of m, p, and v where the expression is defined?

•  $\frac{3v^8}{m^8p^6}$  

•  $\frac{3v^{16}}{m^4p^6}$  

•  $\frac{30m^3}{p^4v^3}$  

•  $\frac{30v^3}{m^3p^4}$  

Tags

CCSS.HSA.APR.A.1