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Nonamiya [84]
2 years ago
15

What is the value of x? pls help!! :(

Mathematics
2 answers:
Mademuasel [1]2 years ago
8 0

Answer:

x =31

Step-by-step explanation:

If you see that's a straight line, and the straight line is always 180 degrees, there fore if you use this 56+4x=180 the x will be 31.

sineoko [7]2 years ago
3 0

Answer:

x = 31

Step-by-step explanation:

angles formed on a straight line have a sum of 180°

Thus, 4x + 56 = 180

4x + 56 = 180

* subtract 56 from each side *

56 - 56 cancels out

180 - 56 = 124

4x = 124

* divide both sides by 4 *

4x / 4 = x

124 / 4 = 31

we're left with x = 31

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The volume of the rectangular prism is 648 feet. The rectangular base is 6 feet by 9 feet. What is the height of the prism?
IrinaK [193]

Answer:

h=12ft

Step-by-step explanation:

The formula one would use for finding the volume of a rectangular prism is as follows:

  • Volume = length × width × height , V=l*w*h

With this in mind, let's plug in the given variables in the question for this formula.

V=648ft^3

l=6ft

w=9ft

h= ?

  • We don't know the height, but that's just fine. We will plug in all our values and isolate h.

V=lwh\\648ft^3=(6ft)(9ft)h

  • I'm leaving in units just because I want to show that units aren't just for show. They can be used when in doubt of how to go about your math.

648ft^3=(6ft)(9ft)h\\648ft^3=(54ft^2)h\\\frac{648ft^3}{54ft^2}=\frac{(54ft^2)h}{54ft^2}

  • Notice, that the units on the left side cancel out, leaving only the unit ft left next to the solution. In the same way, the units on the right side cancel out too, leaving only h, height.

\frac{648ft^3}{54ft^2}=\frac{(54ft^2)h}{54ft^2}\\12ft=h

If involving units only confuses you, like it does for me, you can remove them like so, you just need to know what units your solution uses instead of being able to come to the proper units by using math.

V=lwh\\648=(6)(9)h\\648=54h\\\frac{648}{54}=\frac{54h}{54}\\12ft=h

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3 years ago
A package weighing 5.4 lb is to be shipped to Europe. How many kilograms does this package weigh
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1kg = 2.205 lbs

Therefore, 1 lb = 1/2.205 kg
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= 2.44 kgs
Thus, this package will weigh 2.44 kgs
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Answer:

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Step-by-step explanation:

240,000/3=80,000

80,000x1=80,000

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7. B

8. D

Step-by-step explanation:

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2 years ago
MATH SMARTIES I WILL GIVE BRAINLIEST PLEASE HELP AND PLEASE GIVE AN EXPLANATION!!!!!!!!!!!!!!
LekaFEV [45]

Answer:

<em><u>30 books on the shelf are Fiction.</u></em>

Step-by-step explanation:

Hey!

There are 50 books on a shelf.

  • 1/5 of the books are Science Fiction.
  • 3/10 are Non-Fiction.
  • The Rest are Fiction.

how many books on the shelf are Fiction?

==================================================================

MAKE AN EQUATION!

We know that there are three Categories: Fiction, Science Fiction, and Non Fiction.

Total- 50

⇒ 50 =

1/5 of 50 are SF

⇒ 50 = (1/5)(50)

3/10 of 50 are NF

⇒ 50 = (1/5)(50) + (3/10)(50) + x

--------------------------------------------------------------------------------------------------------------

SOLVE THE EQUATION!

(1/5)(50) + (3/10)(50) + x = 50

To <u>Isolate</u> X-

  -<u>Multiply</u> and remove the parentheses..

⇒ 50/10 + 150/10 + x = 50

   -<u>Simplify</u>.

⇒ 5 + 15 + x = 50

   -<u>Add</u> Like Terms

⇒ 20 + x = 50

     -<u>Subtract</u> 20 from both sides.

⇒ 20 + x - 20 = 50 - 20

      -<u>Simplify</u> Right Hand Side.

⇒ x =  30

--------------------------------------------------------------------------------------------------------------

<em><u>So, 30 books on the shelf are Fiction.</u></em>

==================================================================

<em>Hope I Helped, Feel free to ask any questions to clarify :) </em>

<em> Have a great day! </em>

<em> More Love, More Peace, Less Hate. </em>

<em>        -Aadi x</em>

<em />

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2 years ago
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