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ioda
2 years ago
13

Please help this is worth a lot of my grade:(

Mathematics
1 answer:
Ede4ka [16]2 years ago
5 0

Answer:

Step-by-step explanation:

a_n=-3n+50\\ \\ a_{15}=-3(15)+50\\ \\ a_{15}=-45+50\\ \\ a_{15}=5

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How do I do this ? I don’t understand logarithm
ale4655 [162]

Hello from MrBillDoesMath!

Answer:

x = 19

Discussion:

Both sides are logarithms to the same base, namely 20 , which implies the expressions in x (what we are taking logarithms of) must be equal. So we need to solve

4x - 10 = 3x + 9              => subtract 3x from both sides

4x-3x - 10 = 9                 => add 10 to both sides

x = 9 + 10 = 19

Thank you,

MrB

8 0
3 years ago
Which of the following relations is a function?
Agata [3.3K]

Answer:

D

Step-by-step explanation:

Because in D, there no x-value that are repeating in the list.

For example A, the value 8 and -8 are being repeated twice, which makes this relation not a fuction.

5 0
3 years ago
Given that f(x) = 5x^2-3x+7 and f(g(x))=(5x^4)/9 + (17x^2)/3 + 21. Find all possible values for the sum of the coefficients in t
shtirl [24]

steps

(x) = 5x^2-3x+7

refine

x=5x^2-3x+7

Switch sides

5x^2-3x+7-x=x-x

Subtract x from both sides

5x^2-4x+7=0

Solve with the quadratic formula

8 0
3 years ago
Help ASAP , 15 points and a brainy.
Step2247 [10]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Solve each equation. Check your answer<br>r/238=8
ozzi
You have to get r by itself on one side. Multiply both sides by 238 to cancel it out of the denominator on the left side.

You are left with r = 8 × 238 or r = 1904.

To check, plug 1904 back into the equation.

1904 ÷ 238 = 8
8 = 8 (True)
5 0
3 years ago
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