SAT Questions of the Day - 3-6-20

 $\left(n^6k^{14}\right)^5$  
Which of the following is equivalent to the expression above?

•  $\left(n^2k^5\right)^3$  

•  $\left(n^3\right)^{10}\left(k^2\right)^7$  

•  $\left(n^{15}k^{35}\right)^2$  

•  $\left(n^5\right)^5\left(k^{10}\right)^7$  

Tags

CCSS.HSA.APR.A.1

 $H=\frac{kA\Delta T}{L}$  
The rate of heat transfer, H, of a material can be expressed in terms of its thermal conductivity, kA, the change in temperature of the material,   $\Delta T$  , and the thickness of the material, L, as shown in the equation above. Which of the following correctly expresses the thermal conductivity of a material in terms of its thickness, it's change in temperature, and it's rate of heat transfer?

•  $kA=\frac{\Delta T}{HL}$  

•  $kA=\frac{HL}{\Delta T}$  

•  $kA=HL\Delta T$  

•  $kA=\frac{H\Delta T}{L}$  

Tags

CCSS.HSA.CED.A.4

What is the sum of $3b\left(b-4\right)$  and  $6\left(b-8\right)$  ?

•  $3b\left(1-2b-16\right)$  

•  $3b\left(b-2-16\right)$  

•  $3\left(b^2-2b-16\right)$  

•  $3\left(b^2-2-16b\right)$  

Tags

CCSS.6.EE.A.3