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3 years ago

Solve 2(x+3)=5(x-4) in pair of equation

Mathematics

1 answer:

irina1246 [14]3 years ago

6 0

Answer:

See below.

Step-by-step explanation:

2( x+3) = 5(x-4)

2x + 6 = 5x - 20

2x - 5x = -20 - 6

-3x = -26

x = 8 $\frac{2}{3}$

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PLEASE HELP I WILL MARK BRAINLIEST explanation please!! :)

julia-pushkina [17]

Answer: c

Step-by-step explanation:

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2 years ago

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Solve this equation algebraically!!

NeTakaya

Answer:

See Explanation

Step-by-step explanation:

$1 - \sqrt{x} \neq \: 0 \\ \\ \therefore \: 1 \neq \sqrt{x} \\ \\ {1}^{2} \neq ({ \sqrt{x}) }^{2} \\ \\ 1 \neq \: x \\$

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3 years ago

The water level of a certain body of water is changing at a rate of W(t)=3/4cos(4-t/2) inches per hour, where t represents hours

Leni [432]

Answer:

The answer is below

Step-by-step explanation:

a) The integral $\int\limits^{10}_{1 } {W(t)} \, dt$ means the total change in level of water in inches from 1 am to 10 am. That is the water level change measured in inches between 1 am and 10 am

b) 7 pm is represented as t = 19 hours, while midnight is represented as t = 24 hours, hence the water level change between 7 pm and midnight is:

$\int\limits^{24}_{19 } {W(t)} \, dt\\\\$

c) Using casio calculator to evaluate the integral gives:

$\int\limits^{24}_{19 } {W(t)} \, dt\\\\$ = 2.54 inches

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2 years ago

What is the inverse of f(x) = 2x − 8?

s2008m [1.1K]

To find the inverse, interchange the variables and solve for y.
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3 years ago

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QveST [7]

$30 + 45 =75$
$3 + 1 = 4$
There are 60 minutes in one hour, so 75 minutes is equal to 1 hour and 15 minutes.

$4 + 1 = 5$
Their mom turned the TV off at 5:15.

7 0

3 years ago