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scoray [572]
3 years ago
15

Solve the logarithmic equation: x= log5 (1/625)=

Mathematics
1 answer:
Verizon [17]3 years ago
5 0
You can convert (1/625) to an exponent, and it would be ideal to have 5 as the base of it because you want your log base to cancel it out. what i usually do in this case is just test out 5^1, 5^2, etc until i find one that matches the number i need. in this case because the number you're trying to work with is a small fraction, you'll want to use NEGATIVE exponents so it'll create a fraction instead of a large whole number:

5^-1 = 1/5
. . . keep trying those. . .
5^-4 = 1/625

so, because they're equal to one another, it'll be waaay easier after you substitute 5^-4 in place of 1/625

x = log₅ 5⁻⁴

log base 5 of 5 simplifies to 1. subbing in the 5^-4 gets rid of the log for you altogether, and your -4 exponent drops down:

x = -4 is your answer

if the exponent dropping down doesn't make sense to you, you can think of it in another way:

x = log₅ 5⁻⁴

expand the expression so that the exponent moves in front of the log function:

x = (-4) log₅ 5

then, still, log base 5 of 5 simplifies to 1, so you're left with:

x = (-4)1 or x = -4
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Pemdas? thank you!<br>(-12 ÷ 3) × 2 + 23<br>​
lana66690 [7]

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( - 12 \div 3) \times 2 + 23 =

( - 4) \times 2 + 23

- 8 + 23 =

23 - 3 - 5 =

20 - 5 = 15

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3 0
3 years ago
Which is an example of discrete data?
poizon [28]
Discrete data in information that we collect that can be counted and that only has a certain number of value. EXAMPLES OF DISCRETE DATA: include the number of people in a class, test questions answered correctly, and home runs hit.



Hope this helps :)
6 0
3 years ago
One sixth plus negative seven ninths
OLga [1]

Answer:

-11/18

Step-by-step explanation:

1. find the common denominator. this should be 18

2. multiply 1 by 3 and -7 by 2

3. you should now have a fraction that says 3/18-14/18

4. now subtract these two fractions.

5. your answer should be -11/8

8 0
2 years ago
Tim knows the volume and base area of a wooden chest that is in the shape of a rectangular prism. If the volume is 524 cubic uni
Alexandra [31]

Answer: 34.93 units

Step-by-step explanation:

The volume of a rectangular prism can be calculated with this formula:

V=Bh

Where "V" is the volume, "B" is the base area and "h" is the height.

Since we need to find the height, we must solve for "h":

h=\frac{V}{B}

We know that the volume of that wooden chest (which is in the shape of a rectangular prism) is 524 cubic units and the base area is 15 square units. Then:

V=524units^3\\B=15units^2

Subsitituting these values into h=\frac{B}{V}, we get that the height of the chest is:

 h=\frac{524units^3}{15units^2}=34.93units

6 0
3 years ago
Solve and Share
sergeinik [125]

Answer:

Step-by-step explanation:

The least common multiple of 3 and 4 is 12. Divide the rectangle in twelfths.

⅓ = 4/12

¼ = 3/12

3 0
3 years ago
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