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3 years ago

I seriously need someone help on this please I'm not really good in math please please please please please please help me

Mathematics

1 answer:

Mademuasel [1]3 years ago

4 0

$A=P(1+ \frac{r}{n})^{nt}$

A=future amount
P=present amount
r=rate in decimal
t=time in years
n=how many tmes per year it is compounded

they want 110,000=A
present amount=?
rate is 6% or 0.06
time is 12 years
semianually means 2 times per year, so n=2

$110,000=P(1+ \frac{0.06}{2})^{(2)(12)}$
$110,000=P(1+ 0.03)^{24}$
$110,000=P(1.03)^{24}$
divide both sides by (1.03)^24 using your graphinc calculator
54112.7109=P
$54,112.71 should be invested

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Sav [38]

Answer:

a) σ = 0,1612

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Step-by-step explanation:

NOTE: I assume the unusable length s 11,5 and less

a) For a normal distribution, the probability of P = 0,01 corresponds to z(score) = -3,1 then:

- 3,1 = ( X - μ₀ ) / σ

- 3,1 = (11,5 - 12 )/ σ

-3,1 = - 0,5 / σ

σ = 0,1612

b) If σ = 0,1612

P [ 11,75 < X < 12,35]

z₁ (score) = ( 11,75 - 12 ) / 0,1612

z₁ = - 0,25/ 0,1612

z₁ = -1,55

From z table P [ 11,75 < X] = 0,0606

z₂ (score) = ( 12,35 - 12) / 0,1612

z₂ = 0,35 / 01612

z₂ = 2,17

From z table P [ X < 12,35] = 0,9850

Finally P [ 11,75 < X < 12,35] = 0,9850 - 0,0606

P [ 11,75 < X < 12,35] = 0,92,44 or 92,44 %

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3 years ago

A rock is released from rest and freely falls 70 m to the ground. What is its velocity just before impact? A. 1.2 m/s B. 7.0 m/s

Yuri [45]

Answer:

37.04 m/s

Step-by-step explanation:

we can use the equation x = x0 + v0t + 1/2at^2

a = -9.8 m/s^2, the acceleration due to gravity

x0 = 70 m, the starting point of x

v0 = 0 m/s

x = 0

this will allow us to solve for time

0 = 70 + 0 +-4.9t^2

t = 3.779

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3 years ago

24. A farmstand collected $350 from sales on Wednesday. This amount was $75

larisa [96]

Answer:

$100

Step-by-step explanation:

Given:

Wednesday sales = $350

If the amount collected from sales on Wednesday was $75 greater than the amount collected from sales on Tuesday, then Tuesday's sales were $75 less than Wednesday's sales:

Tuesday sales = $350 - $75 = $275

If the amount collected from sales on Wednesday was two times as great as the amount collected from sales on Monday, then Monday's sales were half Wednesday's sales:

Monday sales = $350 ÷ 2 = $175

To calculate how much more the farmstand collected from sales on Tuesday than it collected on Monday, subtract the Monday sales from the Tuesday sales:

$275 - $175 = $100

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fomenos

Hi there!

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Begin by isolating the y variable by moving 2x to the right-hand side of the equation. (Subtract 2x from both sides):

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