2 years ago

In the diagram below, what kind of line is BF relative to ABC?

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

6 0

Answer:

Step-by-step explanation:

BF is the angle bisector of ∠B.

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Kristin earns $6.50 for every hour she babysits for the Overstreet family. Part A: Last Friday, Kristin babysat for 4.5 hours. H

soldier1979 [14.2K]

Answer: Part A: she would make 35.75

Part B: She would work for 7 hours

Step-by-step explanation:

Part A: $6.50+4.5=35.75

Part B: $45.50 dived by $6.50 would be 7. So she worked 7 hours

8 0

3 years ago

(a) Starting with the geometric series [infinity] xn n = 0 , find the sum of the series [infinity] nxn − 1 n = 1 , |x| < 1.

Mila [183]

Let <em>f(x)</em> be the sum of the geometric series,

$f(x)=\displaystyle\frac1{1-x} = \sum_{n=0}^\infty x^n$

for |<em>x</em>| < 1. Then taking the derivative gives the desired sum,

$f'(x)=\displaystyle\boxed{\dfrac1{(1-x)^2}} = \sum_{n=0}^\infty nx^{n-1} = \sum_{n=1}^\infty nx^{n-1}$

5 0

2 years ago

What are the steps to solve an inequality like: |n + 8| > 3 ??????

SCORPION-xisa [38]

$|n+8|>3\iff n+8>3\ \vee\ n+8-5\ \vee\ n$

6 0

3 years ago

Given f(x)=3x+1, find f(x+5)

soldier1979 [14.2K]

Answer:

f(x+5)=3x+16

Step-by-step explanation:

lets name " x+5" T

so f(T)=3T+1

now use "x+5" replace T

now its f(x+5)=3(x+5)+1=3x+15+1=3x+16

7 0

3 years ago

(3n2 – 5n + 6) + (–8n2 – 3n – 2) =

Troyanec [42]

Hello!

You add like terms

$3n^{2} + - 8n^{2} = -5n^{2}$

$-5n + -3n = -8n$

$6 + -2 = 4$

Put all the answers together

$-5n^{2} -8n+4$

The answer is $-5n^{2} -8n+4$

Hope this helps!

6 0

3 years ago