Look at the equation below. d=(r1+r2)t
d
=
(
r
1
+
r
2
)
t
Which of the following shows the equation solved correctly for r1?

r1=dt⋅r2
r
1
=
d
t
⋅
r
2

r1=d−tr2
r
1
=
d
−
t
r
2

r1=dt−r2
r
1
=
d
t
−
r
2

r1=d−r2tThe relation shown in th

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

x = 23.78

step-by-step explanation:

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: