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Ilia_Sergeevich [38]
3 years ago
12

Solve each equation for the specified variable E = l(r + R): for r

Mathematics
1 answer:
AlladinOne [14]3 years ago
7 0

Answer:

E/I-R=r

Step-by-step explanation:

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A suit is on sale for 72% off. The sale price is $263.20.<br> What is the regular price?
Elis [28]

Answer:

940

Step-by-step explanation:

<em>To find the original price of something that been discount do the following:</em>

  • <em>Subtract the discount from 100 to get the percentage of the original price.</em>
  • <em>Multiply the final price by 100.</em>
  • <em>Divide by the percentage in Step One.</em>

<em>Or we can do the following:</em>

<em>We shall consider the original price as x; hence the discount can be considered as (x−263.20). We can write the equation:</em>

<em>x · 72/100=x - 263.20</em>

<em>x · 18/25 = x - 263.20</em>

<em>Multiply both sides by 25</em>

<em>18x = 25(x - 263.20)</em>

<em>Open the brackets.</em>

<em>18x = 25x-6580</em>

<em>Add 6580 to each side.</em>

<em>6580 +18x = 25x</em>

<em>Subtract 18x from each side.</em>

<em>6580 = 7x</em>

<em>Subtract 7x from each side.</em>

<em>x = 940</em>

<em>Check Answer:</em>

<em>940 * 72% = 676.80</em>

<em>940 - 676.80=263.20</em>

<em>Hence, the regular price is 940.</em>

<em />

<u><em>~lenvy~</em></u>

8 0
3 years ago
Read 2 more answers
One solution of x^2-25=0 is 5. What is the<br> other solution?<br> Enter the correct answer.
Serga [27]

Answer:

<h2>The other solution: x = -5</h2>

Step-by-step explanation:

x^2-25=x^2-5^2\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=(x-5)(x+5)\\\\x^2-25=0\to(x-5)(x+5)=0\iff x-5=0\ \vee\ x+5=0\\\\x-5=0\qquad\text{add 5 to both sides}\\x=5\\\\x+5=0\qquad\text{subtract 5 from both sides}\\x=-5

5 0
3 years ago
KL has a midpoint at M (3,5) Point L is at (2,3) find the coordinates of point K.
Marrrta [24]

Why did the narrator use the phrase “fit together like puzzle pieces” to describe how the cells of a developing human embryo form a human face

6 0
3 years ago
there are two movies playing at a local movie theater. the number of people who saw the action movie is 63 less than one third t
STatiana [176]
In conclusion, 1,155 people went to see a comedy movie.

7 0
3 years ago
Helpppppppppppppppppppppppppppp
skad [1K]
Answer:
1760 Hz

Explanation:
The equation for the displacement has the following general formula:
d = A sin(wt)
where:
A is the amplitude
w is the angular frequency

the given equation is:
d = 0.6 sin(3520πt)
We can note that:
w = 3520 π rad/sec

Now,
w = 2πf where f is the frequency
Therefore:
3520π = 2π*frequency
This means that:
frequency = 1760 Hz

Hope this helps :)
5 0
3 years ago
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