3 years ago

What is the 15th term of the sequence an = -2n(n 3)?

Mathematics

1 answer:

Hoochie [10]3 years ago

5 0

An = -2n(n + 3)
a(15) = -2(15)(15 + 3) = -30(18) = -540

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V125BC [204]

Answer:

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3 0

3 years ago

A circle is centered at the point (7,1) and passes through the point (8,7). what is the radius

Scorpion4ik [409]

Easy

the radius is the distance from the center to a point on the circle

we are given
center=(7,1)
a point=(8,7)
find the distance
distance formula
D= $\sqrt{(x2-x1)^2+(y2-y1)^2}$

so the distance between point and center is radius
D= $\sqrt{(8-7)^2+(7-1)^2}$
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4 years ago

Explain how to use the combine values strategy to find 223-119

stich3 [128]

223
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104
In stead of doing 3-9 and 2-1 do 23-19 then 2-1

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=f%20-%20354%20%3D%201221" id="TexFormula1" title="f - 354 = 1221" alt="f - 354 = 1221" align="

alukav5142 [94]

$f-354=1221$ <em>add 354 to both sides</em>