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alekssr [168]
3 years ago
11

This morning, Elena wrote a check in the amount of $42.50. This brought her balance down to –$14.25. Suppose n represents Elena'

s balance before she wrote the check.
Which equation can be used to represent this situation?
Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0
N - $42.50 = <span>–$14.25
..............................................</span>
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9 exponent 10<br> Divide by 9 exponent 11
Natasha_Volkova [10]

Answer:

\frac{\sqrt{110} }{11} or \frac{\sqrt{10} }{\sqrt{11} }

Step-by-step explanation:

I assume you mean \frac{9\sqrt{10} }{9\sqrt{11} }

there is a common factor of 9 in the numerator and denominator so we can cancel out to form \frac{\sqrt{10} }{\sqrt{11} }

\frac{\sqrt{10} }{\sqrt{11} } is technically a correct answer, but I will go ahead to rationalize the denominator

multiply \frac{\sqrt{10} }{\sqrt{11} } by some form of 1. this case, we will use \frac{\sqrt{11} }{\sqrt{11} } as our 1.

\frac{\sqrt{10} }{\sqrt{11} }*\frac{\sqrt{11} }{\sqrt{11} } = \frac{\sqrt{10} *\sqrt{11} }{\sqrt{11} *\sqrt{11} } = \frac{\sqrt{110} }{11}

8 0
3 years ago
find the standard deviation of the data set 8.2,10.1,2.6,4.8,2.4,5.6,7.0,3.3. Round to the nearest hundredth if necessary.
irinina [24]

Standard deviation = 2.599519186

Round to nearest hundredth = 2.59✓

3 0
3 years ago
PLEASE HELP! What is the mean of the data represented by this normal distribution?
weqwewe [10]
To find the mean, you add up all the numbers and divide by the number of numbers in the sequence
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3 years ago
If 40% of a number is 14, find 20% of that number.
Tom [10]

Answer:

7

Step-by-step explanation:

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So 14%2 = 7

5 0
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If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?
zzz [600]

Answer:

0.5 %  

Step-by-step explanation:

 Annual rate = 6 %/yr

Monthly rate = ¹/₁₂ × 6 = 0.5 %/mo

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Simple interest is calculated only on the principal.

If the interest were calculated at 0.5 % monthly simple interest, you would get $0.50 at the end of each month. At the end of 12 mo, you would have <em>$106. </em>

4 0
4 years ago
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