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juin [17]
3 years ago
9

The area of a circle is 615.44 in2. What is the diameter of the circle? Use 3.14 for π.

Mathematics
2 answers:
Shalnov [3]3 years ago
6 0
615.44 = (3.14)(radius)^2 

<span>radius = square-root of (615.44/3.14) </span>

<span>diameter = radius x 2 </span>

<span>diameter = 28 inches 

3.14

</span>
Ugo [173]3 years ago
6 0

Answer:

the answer is D

Step-by-step explanation:

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At Ralphs Italian Ices, 145 sundaes were sold in June. Sales were up 23% in July, How many sundaes were sold in July?​
elena-s [515]
178 sundaes were sold in July.

To calculate a percentage, we convert to a decimal by dividing by 100. So 23% = 0.23

145 x 0.23 = 33.35 This is how many more sundaes were sold in July than June. We need to add the 145 sold in June to the increased number to find July’s total.
145 + 33.35 = 178.35

You can’t sell .035/ roughly a third of a sundae, so we round to the whole number.
8 0
2 years ago
I need some serious help with this asap!!! I will mark brainliest if right! Explain
34kurt

Answer:

I'm sorry this isn't the answer, but I just want you to know that you are incredible and that I love you for you! You are special to everyone you meet, and should not change who you are. I know your life may be tough, but you are strong and can get through it!

Step-by-step explanation:

6 0
2 years ago
There are between 24 and 40 students in the class
MatroZZZ [7]

Answer:

33 Students

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
(1+(0.065÷365))^365t=4
marta [7]
This is the future value quadrupled in t years at an annual interest rate of 6.5% compounded daily.  We need to find t.

1*(1+0.065/365)^(365t)t=4
take log on both sides,
365t(log(1+0.065/365)=log(4)
=>
365t=log(4)/log(1+0.065/365)
t=(log(4)/log(1+0.065/365))/365
=(1.38629/.000178066)/365
=21.33 years

Check with the rule of 69, applicable to continuous compounding (an approximation to current problem) to double money, it take 69/interest rate in % years.
=69/6.5
=10.62 years
To double twice (quadruple), it takes twice 10.62
=21.24 years, not that far from 21.33 that we got earlier.
7 0
3 years ago
As shown in the illustration, Alexa had a negative balance in her checking account before depositing a $47.00 check. What is the
Ronch [10]
I can't see the negative balance that is mentioned.
But for example it it was a -$22.00 then you would just subtract the $22.00 from $47.00.

$47.00
-$22.00
-------------
$25.00
3 0
3 years ago
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