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lisov135 [29]
3 years ago
9

Solve for x: 2x-4/5=x+4

Mathematics
2 answers:
shepuryov [24]3 years ago
3 0

2x-4=5x+20

-3x=24

x=-8

ra1l [238]3 years ago
3 0

Answer:

2x -4/5 = x + 4

2x -4 /5× 5 = 5(x +4)

2x -4 = 5x +20

2x -4+4 = 5x +20+4

2x = 5x +24

2x -5x = 5x-5x+24

-3x = 24

-3x/-3 = 24/-3

x = -8

hope that will help you

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A chemical flows into a storage tank at a rate of (180+3t) liters per minute, where t is the time in minutes and 0<=t<=60
Yuliya22 [10]

Answer:

The amount of the chemical flows into the tank during the firs 20 minutes is 4200 liters.

Step-by-step explanation:

Consider the provided information.

A chemical flows into a storage tank at a rate of (180+3t) liters per minute,

Let c(t) is the amount of chemical in the take at <em>t </em>time.

Now find the rate of change of chemical flow during the first 20 minutes.

\int\limits^{20}_{0} {c'(t)} \, dt =\int\limits^{20}_0 {(180+3t)} \, dt

\int\limits^{20}_{0} {c'(t)} \, dt =\left[180t+\dfrac{3}{2}t^2\right]^{20}_0

\int\limits^{20}_{0} {c'(t)} \, dt =3600+600

\int\limits^{20}_{0} {c'(t)} \, dt =4200

So, the amount of the chemical flows into the tank during the firs 20 minutes is 4200 liters.

5 0
3 years ago
Find the number between 30 and 70 that is divisible by 8, and when divided by 5 has a remainder of 1
monitta
30+70÷8÷5-1=
=30.75
hope this helps
7 0
3 years ago
Please answer this question correctly. Need help ASAP.!
Tomtit [17]

Answer:

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3 0
3 years ago
The sum of two numbers is 24 and their difference is 2. What are the numbers?
Musya8 [376]
Its 4 and 6
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8 0
3 years ago
Read 2 more answers
Please answer the following
natulia [17]

Answer:

cot∅ = (-2√30)/7.

Step-by-step explanation:

Given the value of csc∅ = -13/7 and ∅ is in quad III.

We know y = r sin∅ and r > 0. So csc∅ = r/y = -13/7 = 13/(-7).

It means y = -7, r = 13.

We know x² + y² = r².

x² = r² - y²

x² = (13)² - (-7)² = 169 - 49 = 120.

x = √120 = 2√30.

we know cot∅ = x/y = (2√30)/(-7) = (-2√30)/7.

Hence, cot∅ = (-2√30)/7.

4 0
4 years ago
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