3.Which of the following is not a plane figure? A. cone
B. paper
C. pentagon
D. square

4.Which is not a solid figure?

A. cube
B. cylinder
C. prism
D. rectangle

5.These are the three dimensions a solid figure, except one.

A. beat
B. height
C. length
D. width​

I'm not sure about the other ones but I'm pretty sure 4 is cube

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation:

↓↓↓↓↓↓↓↓↓

step-by-step explanation:

this is a parabola.