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Andrei [34K]
3 years ago
12

Please help me with 25-29!!

Mathematics
1 answer:
vredina [299]3 years ago
4 0
25-29 ok so first do 9-5 equals 4
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3-x=5x+21
vlada-n [284]

Answer:

<h3>\boxed{ \sf{ \bold{- 3}}}</h3>

Step-by-step explanation:

\sf{3 - x = 5x + 21}

Move 5x to left hand side and change it's sign

⇒\sf{  - x - 5x  + 3 = 21}

Move 3 to right hand side and change it's sign

⇒\sf{ - x - 5x = 21 - 3}

Collect like terms

⇒\sf{ - 6x = 21 - 3}

Subtract 3 from 21

⇒\sf{ - 6x = 18}

Divide both sides of the equation by -6

⇒\sf{ \frac{ - 6x}{ - 6}  =  \frac{18}{-6}}

Calculate

⇒\sf{x  = -3}

Hope I helped!

Best regards!!

3 0
3 years ago
Read 2 more answers
Find the value of x ​
kodGreya [7K]

Answer:

See below, please

Step-by-step explanation:

(2x + 9) + (4x - 3) = 90

6x + 6 = 90

6x = 90 - 6 = 84

Hence

x = 14

8 0
3 years ago
Whats the density of an object with the length of 5.0 cm a height of 3.0 and width of 15.0 cm and a mass of 24 grams
Sphinxa [80]

Answer:

The density of the object is 0.1067 grams per cubic centimeter. (Rounded off to 4th decimal)

Step-by-step explanation:

Density = [Mass/Volume]

Here we have been given the dimensions of the object.

Volume = Height * Width * Length

Volume = 3.0cm*15.0cm*5.0cm

             =225cm^{3}

Now we can substitute the Mass and the Volume to the density equation.

Density = [Mass/Volume]

             =\frac{24grams}{225cm^{3} }

             =0.1067 grams per cubic centimeter. (Rounded off to 4th decimal)

4 0
3 years ago
Guys, please help me with this math problem.
Sphinxa [80]

Your answer would be 4.

5 0
3 years ago
Read 2 more answers
For the function f(x) = 6x - 8, identify the values of f(o), f(1/2), and f(-2).
igor_vitrenko [27]

Answer:

-8, -5, -20.

Step-by-step explanation:

f(0) = 6(0) - 8  = -8

f(1/2) = 6(1/2) - 8 = -5

f(-2) = 6(-2) - 8 = -20.

5 0
3 years ago
Read 2 more answers
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