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Darina [25.2K]
3 years ago
10

What is 3Y + -6 + 7Y + 4Y

Mathematics
1 answer:
Rudik [331]3 years ago
7 0
So first find like terms. The like terms are 3y 7y and 4y. Now add all of them together to get 14y and then just put the -6 back in the equation for your final answer. Final answer: 14y - 6
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You are designing an aquarium that is to have a tank holding 225,000 gallons of water. The tank will be 100 feet long and 20 fee
ziro4ka [17]
So hmmm notice the picture below

thus   \bf \textit{volume of a rectangular prism}\\\\
V=lwh\qquad 
\begin{cases}
l=length\\
w=width\\
h=height\\
----------\\
l=100\\
w=20\\
V=225,000
\end{cases}\implies 225,000=(100)(20)h

solve for "h"

5 0
3 years ago
Find the equation of the line that passes through (5, -1) and<br> (-10, -10)
SashulF [63]

Answer:

y = 0.6x – 4  

or

y =   3/5x -4

Step-by-step explanation:

3 0
3 years ago
A culture started with 4,000 bacteria. After 5 hours, it grew to 4,800 bacteria. Predict how many bacteria will be present after
eimsori [14]
First we need to find k ( rate of growth)
The formula is
A=p e^kt
A future bacteria 4800
P current bacteria 4000
E constant
K rate of growth?
T time 5 hours
Plug in the formula
4800=4000 e^5k
Solve for k
4800/4000=e^5k
Take the log for both sides
Log (4800/4000)=5k×log (e)
5k=log (4800/4000)÷log (e)
K=(log(4,800÷4,000)÷log(e))÷5
k=0.03646

Now use the formula again to find how bacteria will be present after 15 Hours
A=p e^kt
A ?
P 4000
K 0.03646
E constant
T 15 hours
Plug in the formula
A=4,000×e^(0.03646×15)
A=6,911.55 round your answer to get 6912 bacteria will be present after 15 Hours

Hope it helps!
4 0
3 years ago
Read 2 more answers
HELP ASAP 5 STARS, THANKS, 20 POINTS, BRAINLIEST,
Bingel [31]

Answer:

b.7

Step-by-step explanation:

you take the three and substitute that in for x.  2(3) + 1

2(3)=6 then add 1

5 0
3 years ago
Read 2 more answers
Factorise
Rufina [12.5K]

Answer:

6x - 9

3(2x−3)

2a(5b+3)

Step-by-step explanation:

Factor 6a+10ab

10ab+6a

Factor 6x−9

6x−9

=3(2x−3)

                             :))

8 0
3 years ago
Read 2 more answers
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