What is the value of x when 10(x + 2) = 5(x + 8)

Answers

Answer 1

Answer: the answer is x=4. you have to use the distributive property on both sides then begin solving for x.

Answer 2

Answer: Use the distributive property to get 10x+20=5x+40. Subtract 5x from both sides to get 5x+20=40. Subtract 20 from both sides to get 5x=20. Divide 5 from both sides to get x=4.

x=4

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The surface area of the rectangular prism can be found using the expression 6x exponent 3 + 4x exponent 2 + 12x. if the value of x is 3, what is the surface area, in square centimeters of the prism?

Answers

Answer:

234 cm²

Step-by-step explanation:

Given expression to represent the surface area of the rectangular prism is $6x^(3) +4x^(2) +12x$

The given value of x is 3.

Now, finding value of expression by sustituting value of "x" as given.

Surface area of the rectangular prism = $6x^(3) +4x^(2) +12x$

Surface area of the rectangular prism= $6* 3^(3) +4* 3^(2) +12* 3$

∴ Surface area of the rectangular prism= $6* 27+ 4* 9+ 12* 3$

Surface area of the rectangular prism= $162+36+36= 234\ cm^(2)$

∴ Surface area of the rectangular prism= 234 cm²

your mother is out of toothpicks and suggest you use cotton swabs instead you measure them and they are 7.6 cm tall how many cotton swabs tall will your model be

Answers

37.8 ÷ 7.6 =4.974
It will be 4 complete cotton swabs high.

PLEASE HELP I GIVE THANKS

Answers

It's either A or C I don't know for sure.

explain how u can find the volume of composite figures that are made by combining rectangular prisms. tell me the answer plz!!

Answers

By taking the volume of individual prisms and taking the sum of the results.

Volume of composite shapes

Composites shapes are made of two or more figure joined or stacked together

The volume of the composite figures made by combining rectangular prisms is derived by taking the volume of individual prisms and taking the sum of the results.

Learn more on volume of composite figure here: brainly.com/question/16703501

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It's simple!

Because that a composite figure is made of other / combining rectangular prisms, you can find the composite figure's volume by finding the volumes of those combined rectangular prisms and adding them up.

(3x²-7x+2)+(2x²+7x-1)