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3 years ago

12

Which of the following choices is the simple formula for the nth term of the following arithmetic sequence? 7, 3, -1, -5, -9, ..

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1 answer:

Llana [10]3 years ago

7 0

$7 -4n$ , as it starts with 7, and subtracts 4 each time.

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Can someone walk me through the steps: Steve increases his math average by 9 points over a period of 15 weeks. How many points p

ozzi

hmmm units rates are just a matter of one above the other.

in this case is points/week.

9/15 points/weeks, we can just divide 9 ÷ 15 = 0.6, or 3/5.

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4 years ago

I NEED MENNTAL HAELP

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3 years ago

Solving systems of equations by substitution -2x-3(6-11)=-7

Papessa [141]

Answer:

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3 years ago

An ice cream cone has height of 6 inches and a diameter of 2 inches what is the volume in cubic inches of the ice cream

GrogVix [38]

keeping in mind that radius is half the diameter, we know this cone has a diameter of 2 inches, so it has a radius of 1 inch, kinda small really for ice-cream, but anyhow.

$\textit{volume of a cone}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=1\\ h=6 \end{cases}\implies V=\cfrac{\pi (1)^26}{3}\implies V=2\pi \implies \underset{\textit{rounded up}}{V\approx 6}$

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2 years ago

Desmond paid 8.5% sales tax when he bought a new phone. The sales tax was $12.75. What was the cost of the phone, without tax? *

Over [174]

Answer: 150$

Step-by-step explanation:

12.75 / 8.5%

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3 years ago