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Schach [20]
3 years ago
10

What is the circumference of a circle with a radius of 4.4 centimeters? Enter your answer as a decimal in the box. Use 3.14 for

pi. Round your answer to the nearest tenth. cm
Mathematics
1 answer:
masha68 [24]3 years ago
5 0
The circumference should be 13.8 cm^2
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HELP PLEASE Sam and George both worked hard over the summer. Together they earned a total of $525. George earned $75 more than S
ZanzabumX [31]

Answer:   Sam = $225      George = $300

<u>Step-by-step explanation:</u>

NOTES:

Sam: s

George: g = s + 75

Together: s + g = 525


a.

The two equations that can be created are "George" and Together"

The system is: \left \{ {{\text{g = s + 75}} \atop {\text{s + g = 525}}} \right.

b.

see attached graph

c.

The intersection of the two lines is at (225, 300).  Since Sam represented the x-axis and Georege represented the y-axis, then Sam = $225 and George = $300.


BONUS:

This system can also be solved algebraically using the substitution method.

Replace "g" with "s + 75" into the second equation:

s + (s + 75) = 525

2s + 75 = 525

2s = 450

 s = 225

Next, input the s-value into the George equation to solve for g:

g = s + 75   = (225) + 75   = 300

5 0
2 years ago
A man bought a book for 15rs. If twice the amount left with him is 70rs, how much money did he have?
N76 [4]

Answer:

50 rs.

Step-by-step explanation:

Just look at the picture for a step by step explanation..

Hope it helps you...

Your welcome in advance..

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5 0
3 years ago
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Solve 10e^2x - 5 =23^x for x.
yawa3891 [41]

10e^{2x}-5=23e^x\qquad\text{subtract}\ 23e^x\ \text{from both sides}\\\\10e^{2x}-23e^x-5=0\\\\10(e^x)^2-23(e^x)-5=0\\\\\text{substitution:}\ e^x=t > 0\\\\10t^2-23t-5=0\\\\10t^2-25t+2t-5=0\\\\5t(2t-5)+1(2t-5)=0\\\\(2t-5)(5t+1)=0\iff2t-5=0\ \vee\ 5t+1=0\\\\2t=5\ \vee\ 5t=-1\\\\t=\dfrac{5}{2} > 0\ \vee\ t=-\dfrac{1}{5} < 0\\\\\text{therefore}\ e^x=\dfrac{5}{2}\to\ln e^x=\ln\left(\dfrac{5}{2}\right)\\\\\boxed{x=\ln\left(\dfrac{5}{2}\right)}

5 0
2 years ago
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Which of the choices below follow an exponential pattern? Select all that apply.
Masja [62]
What are the choices?
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3 years ago
If your pencil is 20 centimeters long how many millimeters is it
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200 milimeters is the answer
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