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iris [78.8K]
3 years ago
14

I NEED HELP PLZZZZZ HELP MEEEEEE!!!! Asha feels she needs $45,000 per year in retirement. If she receives $30,000 a year from So

cial Security, at what interest rate must Asha invest her $250,000 of savings for her total income to be at least $45,000 per year?
a.)at least 6% interest
b.)at least 17% interest
c.)at least 18% interest
d.)at least 30% interest
Mathematics
1 answer:
Svetach [21]3 years ago
4 0
D..............................................
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What is the velocity of the plane that travels 3000km in 5 hours?
Ivan

Answer:

600km/h

546.807 fps

0.1666667 km/s

Step-by-step explanation:

Use which ever unit youd want to in this scenereo, I'd use 600km/h

3000 / 5 = 600

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<img src="https://tex.z-dn.net/?f=%5Csqrt%7B%28-81%29x%5E%7B2%7D%20%7D" id="TexFormula1" title="\sqrt{(-81)x^{2} }" alt="\sqrt{(
SSSSS [86.1K]

Answer:

We conclude that:

\sqrt{\left(-81\right)x^2}=9ix

Step-by-step explanation:

Given the radical expression

\sqrt{\left(-81\right)x^2}

simplifying the expression

\sqrt{\left(-81\right)x^2}

Remove parentheses:  (-a) = -a

\sqrt{\left(-81\right)x^2}=\sqrt{-81x^2}

Apply radical rule:   \sqrt{-a}=\sqrt{-1}\sqrt{a},\:\quad \mathrm{\:assuming\:}a\ge 0

                 =\sqrt{-1}\sqrt{81x^2}

Apply imaginary number rule:  \sqrt{-1}=i

                 =i\sqrt{81x^2}

Apply radical rule:   \sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b},\:\quad \mathrm{\:assuming\:}a\ge 0,\:b\ge 0

                  =\sqrt{81}i\sqrt{x^2}

                  =9i\sqrt{x^2}

Apply radical rule:  \sqrt[n]{a^n}=a,\:\quad \mathrm{\:assuming\:}a\ge 0

                  =9ix

Therefore, we conclude that:

\sqrt{\left(-81\right)x^2}=9ix

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3 years ago
Simplify 9 − (−4).<br><br> −13<br> −5<br> 5<br> 13
andrew11 [14]
- - = +   9-(-4)= 9+4 so minus minus becomes plus. and 13 is the answer.
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3 years ago
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