3 years ago

Cual es el valor de x en x4 = -8

Mathematics

2 answers:

Andrews [41]3 years ago

4 0

2x divide 4 from both sides.

nalin [4]3 years ago

3 0

Answer:56

Step-by-step explanation:

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Pam has taken 4 tests. She scored an 82, 94, 89 and 92. What would she need to score on her 5th test to have a mean of 90?

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3 years ago

Can someone help me with this

adell [148]

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2 years ago

if $4000 is invested in an account that pays interest compounded continuously, how long will it take to grow to $8000 at 7%?

Archy [21]

So, since it is continuously, we need to think of PERT

$A=P\times e^{rt}$

So, we just plug our numbers in to solve for T

$8000=4000e^{.07t}\\\ln(8000)=\ln(4000e^{.07t})\\\ln(8000) = \ln(4000) + \ln(e^{.07t})\\\ln(8000)=\ln(4000)+.07t\ln(e)\\\ln(8000)=\ln(4000)+.07t\\\frac{\ln(8000)}{\ln(4000)}=.07t\\\frac{\ln(8000)}{.07\ln(4000)}=t\\ 15.479=t$

It will take 15.479 years

7 0

3 years ago