Find the 15th term of the geometric sequence 10, 20, 40, ...

Mathematics

1 answer:

Diano4ka-milaya [45]3 years ago

5 0

Answer:

70,110160,220,290,370,460 i thinks

step by step explanation

first no they added 10 next they added 20 so they are increasing 10

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Replace ∗ with a monomial so that the result is an identity:(5x + ∗)(5x − ∗) = 25x2–0.16y4

Eddi Din [679]

Answer:

0.4y²

Step-by-step explanation:

25x² - 0.16y⁴

(5x)² - (0.4y²)²

(5x - 0.4y²)(5x + 0.4y²)

5 0

3 years ago

What is the solution to the equation below? Round your answer to two decimal places. log5 x=2.1

Natali5045456 [20]

Answer:

D. x=29.37

Step-by-step explanation:

To answer this question you have to understand how log work. Log is the abbreviation of logarithm and it works as an inverse function of exponentiation.

The rules should be like this:

$log_{a} b = c\\a^{c} = b\\$

Variable a in the equation is called base. If it left empty you can assume its base 10. The log in this question using 5 as a base. Variable b will be x and variable c will be 2.1

Now, let's change the variable of the equation using the information from the question.

$log_{a} b = c\\\log_{5} x = 2.1\\5^{2.1} = x\\x= log_5}^{-1}2.1\\x=29.365473577\\x=29.37$