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nignag [31]
3 years ago
8

CAN SOMEONE HELP ME TO DO THIS PLEASE PLEASE PLEASE :(​

Mathematics
1 answer:
lbvjy [14]3 years ago
7 0

Answer:

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Andre was trying to write 7^4/7^-3 with a single exponent and write 7^4/7^-3= 7^4-3=7^1 Exploit to Andre what his mistake was an
Readme [11.4K]
\frac{7^4}{7^{-3}}=7^7

Here, we want to get what Andre's mistake was and correct it

To answer this, we are supposed to use the division law of indices

We have this as;

\frac{a^x}{a^y\text{ }}=a^{x-y}

Now, in the case of this question, x is 4 and y is -3

So, we have the expression as;

7^{4-(-3)}=7^{4+3}=7^7

His mistake is thus adding the exponents instead of subtracting

3 0
1 year ago
An externally imposed project completion time sets the project duration at 75 days. The critical path of the project is establis
Katen [24]

Answer:

3 days

Step-by-step explanation:

This can be seen under Schedule management (Initiating)

Project float is simply the difference between the completion period externally imposed and the estimated time duration of the project (usually this is equal to the critical path length). The difference in this case is 0 because

Externally imposed project date = 75 days

Estimated duration of project = 75 days

Hence, a difference in these will be 0

However, a standard deviation of 3 days was giving (This implies that there is a +/- 3 days in the critical path from the estimated project duration) .

Hence the maximum float in this case will be 0 + 3 = 3 days

8 0
4 years ago
The number tiles containing the numbers 11-20 are in a bag. One tile is pulled from the bag. Determine each probability. 3a. P(p
Anna007 [38]

|\Omega|=10\\

3a

|A|=4\\\\P(A)=\dfrac{4}{10}=\dfrac{2}{5}=40\%

3b

|A|=3\\\\P(A)=\dfrac{3}{10}=30\%

8 0
3 years ago
What is the answer please 2(4 + 2z) =
Alika [10]

Answer: It would be 8+4z  because you can't add a variable.

4 0
3 years ago
Read 2 more answers
The cost in dollars of producing x units of a particular brand of notebook is C(x) = x2 – 400.
yulyashka [42]
<span>
A)
C(102) = 102^2 – 400 = 10004
</span>C(100) = 100^2 – 400 = 9600

average rate of change = (10004<span>- 9600)/(102 - 100) = 404/2 = 202

</span>B)
C' = 2x = 2 (100) = 200
8 0
3 years ago
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