2 years ago

2 Solve the equation 3x +125 = 49

Mathematics

1 answer:

Alex787 [66]2 years ago

8 0

Qustion:

3x +125 = 49

Answer:

x = - 25 1/3

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BRAINLIEST FOR WHOEVER SOVLES FIRST AND GIVES A GOOD REASON.

natulia [17]

X=60
That’s the answer

What I did to get it
(3x-60)=120
+60. +60
3x =180
————. = 60
3

X=60

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2 years ago

I don’t understand how to do this

schepotkina [342]

Answer:

The solution is $x =0.$

Step-by-step explanation:

The equation

$\bold{(1).}\: sin(\dfrac{3\pi }{2} +x)+sin(\dfrac{3\pi }{2} +x) =-2$

can be rewritten as

$2* sin(\dfrac{3\pi }{2} +2) =-2$

and can be further simplified to

$sin(\dfrac{3\pi }{2}+x ) =-1$ .

Now, taking the inverse sine of both sides we get:

$sin^{-1}(sin(\dfrac{3\pi }{2} +x) =sin^{-1}(-1)$

$\bold{(2).}\: \dfrac{3\pi }{2} +2 =sin^{-1}(-1)$

The value of the right side on the interval $[0,2\pi)$ is

$sin^{-1}(-1) = \dfrac{3\pi}{2} \: \:( \text{or }270^o)$ ,

which makes the equation (2)

$\dfrac{3\pi }{2}+x =\dfrac{3\pi}{2}$

solving for $x$ gives

$\boxed{x = 0}$

which is our solution.

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2 years ago

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Answer:

2 remainder 5 ily

Step-by-step explanation:

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Jeanette can walk 1 km in 11 minutes. At the same rate, how far can she walk in 55 minutes?

gladu [14]

11 minutes = 1 km

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1 x 5 = 5 km.

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