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allochka39001 [22]
4 years ago
15

An arithmetic sequence has this recursive formula:

Mathematics
1 answer:
alexdok [17]4 years ago
7 0

Answer: choice C

Step-by-step explanation:

an=a1+d*(n-1)

so

an=9+(n-1)*(-3)

you can check the answer by plugging in the numbers, for example if n=1, an=9, if n=2 an=6 which is correct.

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Plzz help
Charra [1.4K]
It’s be just took the test
3 0
3 years ago
Factorize 216x^3 + 64y^3
marin [14]

Answer:

8( 3x+2y) ( 9x^2 -6xy +4y^2)

Step-by-step explanation:

216x^3 + 64y^3

Factor out the greatest common factor of 8

8( 27x^3 +8y^3)

Rewriting

8 ( (3x)^3 + (2y)^2))

Recognizing this as the difference of cubes)

a^3 + b^3 = (a+b) (a^2-ab+b^2)

8 ( (3x)^3 + (2y)^2)) = 8( 3x+2y) ( 9x^2 -(3x)(2y) +4y^2)

                                 =8( 3x+2y) ( 9x^2 -6xy +4y^2)

5 0
4 years ago
Midsegment of triangle <br> Find the distance across the lake
gizmo_the_mogwai [7]

Answer:

The distance across the lake is 2.9 km.

Step-by-step explanation:

The sides are divided in equal parts. Thus all three sides are divided in the same proportion.

7 0
3 years ago
Given the function h of x equals three times the square root x plus 1 end root minus 2, which statement is true about h(x)?
topjm [15]

A function assigns the values. The correct option is D.

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

The given function h(x)=3(\sqrt{x+1})-2 when plotted on the graph will look as shown below. Therefore, the function is increasing on the interval (–1, ∞).

Hence, the correct option is D.

Learn more about Function:

brainly.com/question/5245372

#SPJ1

8 0
2 years ago
three fourths of a spinach casserole is leftover after Sam has lunch .Jackie and Alicia each take 1/2 of the leftover casserole
scoray [572]
Casserole left over by Sam = 3/4 of the whole

Casserole received by Jackie and Alicie = 1/2 x 3/4 = 3/8 of the whole

Portion eaten by Jackie = 2/3 x 3/8 = 1/4 of the whole
6 0
4 years ago
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