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koban [17]
3 years ago
12

See question above. super confused with this lesson .​

Mathematics
1 answer:
Tcecarenko [31]3 years ago
4 0

Answer: A or D

Step-by-step explanation:

To find the mean, add together all the numbers given, 4000, 9000, 8000, 5500. Which equals, 6625, and on your choices, 7000 and 6500 are the closes answers.

<u>To Find Mean:</u><em><u> Add together all numbers and divide by how many they are.</u></em>

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Solve the logarithmic equation: x= log5 (1/625)=
Verizon [17]
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
5 0
3 years ago
This affects earth’s climate because… (Select all that apply) Select one or more: a. Heat is trapped in carbon b. There are fewe
kondaur [170]
C. carbon is found in all living things

a. heat is trapped in carbon
6 0
3 years ago
Solve for q. <br><br> 16pq^2 =25
Nady [450]

Question:

<em>Solve for q.  </em>

<em>16pq^2 =25</em>

Answer:

<em>16pq^=25</em>

<em>p=25/16q^2</em>

<em>q=0</em>

Hope thisd helps!

8 0
3 years ago
Read 2 more answers
One student can paint a wall in 20 minutes. Another student can paint the same wall in 30 minutes. Working together, how long wi
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1) in one minute for first  wiil be 1/20

the other 1/30, it means that  A paint in one minute  1/20 and B 1/30 then   A+B in one minute 1/20 + 1/30 = 3+2/60 = 5 / 60,  5/60 = 1/12

if in one min they make 1/12 then  in 12  min they  paint all the wall

5 0
3 years ago
A circular garden is enlarged so that the new diameter is twice the old diameter. What is the ratio of the original area to the
Amanda [17]

Answer:

  • Explained briefly below.

Step-by-step explanation:

<u>For old circular garden:</u>

take the radius as r.

then use the formula to find area of circle: πr² ......this is old garden area.

<u>For new enlarged garden:</u>

the radius is twice the old radius so, radius = 2 * r = 2r ......enlarged radius

now find area for this new garden:  π(2r)² → 4πr²

In common fractions: (old garden)/(new garden)

                                : ( πr² ) / ( 4πr² )

                                 :    1/4

7 0
3 years ago
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