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77julia77 [94]
3 years ago
5

Why do we divide log2(4) by 15 and why log4(15) turned to log2(15) i need deep explanation and understand the rest but i didnt g

et where the first step came from

Mathematics
1 answer:
maxonik [38]3 years ago
7 0

Answer:

see below

Step-by-step explanation:

log 4 (15)

We need to change the base from 4 to 2

log b (a) = log x(a) / log x(b)  where x is the base that we need

log4 (15) = log 2 (15) / log 2 (4)

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Whoever answers gets brainlist!
Musya8 [376]

Answer:

21 over 6 (21/6)

26 over 6 (26/6) =47 over 6 (47/6)

your final answer is 7 5/6

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the slope (5,7) and (2,-2)​
Romashka [77]

Answer:

slope = 3

Step-by-step explanation:

to find the slope you do (y2-y1)/(x2-x1)=m

so we can plug the points into this formula

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x1 y1    x2 y2

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4 0
3 years ago
Which exponential function is graphed here?
jek_recluse [69]

Answer:

y = 5^x

Step-by-step explanation:

y= b*(a)^x + c

c could = 1 but then you would not have an exponential function. c = 0 because the graph follows the x axis up until x = -2. Suppose c = 1. The the graph would follow y = 1 up until x = - 2

When x = 0, y = 1 which means that b. If b is anything but 0 or 1 then the y intercept would be stretched to a different place. If be = 0 then y would = 0.

So the graph is of the form y = a^x

Now when x = 0 the graph, the y intercept is y = a^0  or y = 1 So the y intercept is (0,1)

Now the next point is thing to solve for is a.

When x = 1, y = 5  (read the graph)

y = a^x

5 = a^1

5 = a because a^1 is a.

Answer

y = 5^x.

5 = a^1

4 0
3 years ago
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
defon

Answer:  84

<u>Step-by-step explanation:</u>

Set up a proportion as follows: \dfrac{\text{students that practice everyday}}{\text{total students}}

\dfrac{7}{12}=\dfrac{x}{144}

Cross multiply: 12x = 7 × 144

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Simplify:                x = 84

6 0
3 years ago
Solve the equation: X to the 4th power - 81=0
Musya8 [376]
x^4-81=0\\&#10;x^4=81\\&#10;x^4=3^4 \vee x^4=(-3)^4\\x=3 \vee x=-3
5 0
4 years ago
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