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3 years ago

5

Does anyone know this

1 answer:

TEA [102]3 years ago

8 0

Answer:

16.7

Step-by-step explanation:

You need to use the pythagorean theorem

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Find the sum of the first six terms of a geometric series in which a1 = 4 and r = -3: A. 729 B. -729 C. -728 D. 728 plz help

natta225 [31]

Answer:

C

Step-by-step explanation:

The sum to n terms of a geometric sequence is

$S_{n}$ = $\frac{a_{1}(r^n-1) }{r-1}$

Here a₁ = 4 and r = - 3, thus

$S_{6}$ = $\frac{4((-3)^6-1)}{-3-1}$

= $\frac{4(729-1)}{-4}$ = - (729 - 1) = - 728 → C

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3 years ago

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3 years ago

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Elijah earns $200 for 8 hours of work.What is the rate (in dollars per item)

MAXImum [283]

25 dollars per hour should be the correct answer

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3 years ago

What z-score value separates the top 10% of a normal distribution from the bottom 90%??

nata0808 [166]

The 90th percentile corresponds to Z ≈ 1.28155.

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4 years ago

Zene deposited $50 in a savings account earning 5% interest, compounded annually. To thenearest cent, how much will he have in 3

JulsSmile [24]

Answer:

$\$57.88$

Step-by-step explanation:

we know that

The compound interest formula is equal to

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

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=3\ years\\ P=\$50\\ r=5\%=5/100=0.05\\n=1$

substitute in the formula above

$A=50(1+\frac{0.05}{1})^{1*3}$

$A=50(1.05)^{3}$

$A=\$57.88$

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4 years ago