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lidiya [134]
3 years ago
13

The atomic weight of an unknown element,in atomic mass units (amu),is approximately 20% less than that of calcium. The atomic we

ight of calcium is 40 amu. What is the approximate weight,in amu,of the unknown element?
Mathematics
2 answers:
romanna [79]3 years ago
5 0
I don't know what ur talking about I'm in 6th grade LOL

Mnenie [13.5K]3 years ago
4 0
Amu of unknown element = 40 - (20% * 40)
= 40 - 8
= 38 amu

therefore, the approximate weight of the unknown element is 38 amu.

hope this helps.
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Find the volume of the cylinder.<br> Either enter an exact answer in terms of π or use 3.14 for π
Alex787 [66]

Answer:

Volume of the cylinder = 62.80 units^3

Step-by-step explanation:

Height of the Cylinder(h)=5 units

Radius(r)=2 units

Volume of a cylinder=\pi *r*r*h

     Putting the values in the formula;

Volume of the cylinder =\pi *2*2*5

                      As,   \pi =\frac{22}{7}=3.14                        

Volume of the cylinder=  3.14*2*2*5

                                 =3.14*2*2*5\\\\=3.14*4*5\\\\=3.14*20\\\\=62.80units^3                              

The Volume of the cylinder is 62.80 units^3

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3 years ago
Plz help will be marked BRAINLIEST <br> Thanks!
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3 years ago
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To factor the trinomial 12x² + 7x - 5, a student must find factors of _____________ that add up to _____________.
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3. Which ordered pair is on the line of the<br> graph for y = 10x?
Agata [3.3K]

<em>Note: It seems that you had forgotten to add the choices for this question. After a little research I am able to find the complete question, which is as follows:</em>

<em>Which ordered pair is on the line of the  graph for y = 10x?</em>

A) (0, 10)

B) (1, 10)

C) (10, 1)

<em>D) (10, 10)</em>

<em>So, I am answering based on this complete question. Hopefully, it would help in terms of clearing your concept.</em>

Answer:

The ordered pair (1, 10) is on the line of the  graph for y = 10x. So, the correct option is B) (1, 10). Also check the attached graph figure a.

.

Step-by-step explanation:

As the equation is given by

                                             y = 10x

<em>for A) (0, 10)   </em>

                                Put <em>(0, 10)  in </em>y = 10x ⇒ 10 = 0

So, the ordered pair (0, 10) does not satisfy the question. So, option <em>A) (0, 10)  is not true.</em>

<em> </em>

<em>for B) (1, 10)                       </em>

<em>                       </em>y = 10x

Put <em>(1, 10)  in </em>y = 10x ⇒ 10 = 10

So, the ordered pair (1, 10) satisfies the question. So, option B<em>) (1, 10)  is true. </em>Also check the attached graph figure a.

<em>for C) (10, 1)                       </em>

<em>                       </em>y = 10x

Put <em>(10, 1)  in </em>y = 10x ⇒ 1 = 100

So, the ordered pair <em>(10, 1)  does not</em> satisfy the question. So, option C<em>) (10, 1)  is not true.</em>

<em>for D) (10, 10)                       </em>

<em>                       </em>y = 10x

Put <em>(10, 10)  in </em>y = 10x ⇒ 10 = 100

So, the ordered pair <em>(10, 10) does not</em> satisfy the question. So, option <em>D) (10, 10)  is not true.</em>

<em>So, </em><em>from all the given options, the ordered pair (1, 10) is on the line of the  graph for y = 10x. So, the correct option is B) (1, 10). </em>Also check the attached graph figure a.

Keywords: graph, line, ordered pair

Learn more about ordered pair on the graph from brainly.com/question/12107132

#learnwithBrainly

6 0
3 years ago
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