2 years ago

Question 9 of 25 If f(x) = 2x - 6 and g(x) = 3x + 9, find (f+ g)(x).

Mathematics

1 answer:

horsena [70]2 years ago

8 0

Answer:

5x+3. Explanation: (f+g)(x)=f( x)+g(x). =2x−6+3x+9=5x+3

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What is the 19th term of a geometric sequence where a1=8 and a9=360. Round the common ratio and 19th term to the nearest hundred

denpristay [2]

Answer:

Step-by-step explanation:

$a_{1} = 8\\a_{9} = 360 = a_{1} \cdot r^9 = 8 \cdot r^9\\r = \sqrt[9]{\frac{360}{9} } \cong 1.53$

By the formula of a geometric series:

$S_{n} = a \cdot \frac{1-r^n}{1-r} => S_{19} = 8 \cdot \frac{1-1.53^{19}}{1-1.53} = 6091.54$

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3 years ago

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I need with these problems

ch4aika [34]

Answer:

1. $\frac{5}{6}$

3. $\frac{7}{0}$ (undefined slope)

5. $-\frac{7}{4}$

7. $24$

Step-by-step explanation:

slope (m)

rate of change (r)

1. m = $\frac{y_2-y_1}{x_2-x_1}=\frac{8-3}{13-7} =\frac{5}{6}$

3. m = $\frac{y_2-y_1}{x_2-x_1}=\frac{4-(-3)}{9-9} =\frac{7}{0}$ (undefined slope)

5. m = $\frac{y_2-y_1}{x_2-x_1}=\frac{-1-6}{0-(-4)} =\frac{-7}{4}=-\frac{7}{4}$

7. r = $\frac{f(b)-f(a)}{b-a}=\frac{24-0}{1-0}=\frac{24}{1}=24$

Hope this helps!

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1 year ago

Solve the x <br> 2(2.5x + 8) = 11

Len [333]

Step-by-step explanation:

2×2.5x+2×8=11

5x+16=11

5x=11-16

5x=-5

x=-1

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2 years ago

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Describe the pattern. Draw what might be the next three fiſgures in the pattern. How many circles are in the sixth figure in the

n200080 [17]

The answer is drawn in red

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At the book fair 26 books were sold in the first 2.5 hours at this rate how many books will be sold in the 10 hours of the book

sashaice [31]

Answer:

Step-by-step explanation:

if 26 books were sold in 2.5 hours

26 books.......................................2.5 hours

? books............................................10 hours

the books sold in 10 h

=(26*10)/2.5=104

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2 years ago

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