3 years ago

Help!! Dont know how to do this!

Mathematics

1 answer:

CaHeK987 [17]3 years ago

6 0

Answer:

A=(5D-5h)/4

Step-by-step explanation:

So you need to get a on one side so you subtract h on both sides to eliminate the h on the right side: D-h=4/5 a

now you need to multiply 5/4 on both sides in order to make 4/5 a just a

A=(5D-5h)/4

Hope this helps!

You might be interested in

How far did johnny travel in all? how long did it take

Anna [14]

Answer: We can't answer you if you don't say the problem.

7 0

4 years ago

Find two positive real numbers whose product is a maximum. the sum is 80

Eduardwww [97]

Let's say the numbers are "a" and "b"

thus $\bf y=ab\qquad 
\begin{cases}
a+b=80\\
b=80-a
\end{cases}\implies y=a(80-a)\implies y=80a-a^2\\\\
-----------------------------\\\\
\cfrac{dy}{da}=80-2a$

set the derivative to 0, and check the critical points, there's only one anyway

and do a first-derivative test, to see if it's a maximum

4 0

3 years ago

Read 2 more answers

3. John has $500 and wants to buy a used car but does not have sufficient money.

VMariaS [17]

Answer:820

Step-by-step explanation:

Since he got $500 the first week multiply 80x4 which is 320+500 is 820$

4 0

4 years ago

(Joel uses the incorrect expression 0.95(190)(0.8) to calculate his total. He finds that the tablet will cost him a total of $14

Bond [772]