What is this (please)

A) y=-4/5

Step-by-step explanation:

When you have two fractions equal to one another, the easiest thing is often to cross multiply. To do this, multiply the top of the left fraction by the bottom of the right fraction, and then multiply the bottom of the left fraction by the top of the right side and put them equal to eachother:

Knowing this, and some algebra, we can solve the question:

(7y+4)(3)=(y+2)(-4)

21y+12=-4y-8

21y+4y=-8-12

25y=-20

y=-4/5

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:

2425

step-by-step explanation: