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bonufazy [111]
3 years ago
11

What is A decreased by 20% and then increased by 20% of that? Please show your work.

Mathematics
1 answer:
Eduardwww [97]3 years ago
3 0

Answer:

A - (20% of A) = 80% of A + (20% of (80% of A) = 96% of A

So if A is 100:

100 - (.2 * 100) = 80 + (.2 * 80) = 96

Step-by-step explanation:

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If you get this right i will give a brainlest
VARVARA [1.3K]

Answer:

B

Step-by-step explanation:

Because the rest are wrong. It is just asking you to compare the numbers. choice B says that Group 1/A needs 6 more lessons than Group 12/B

4 0
3 years ago
2u + 1 &gt; -5/4u - 9<br><br> help please
FinnZ [79.3K]
2u + 1 > -5/4u - 9
2u + 5/4u > -9 - 1
8/4u + 5/4u > -10
13/4u > -10
u > - 10 * 4/13
u > -40/13 or - 3 1/13 <=
4 0
3 years ago
The BJ Electrical Company needs to hire master electricians and apprentices for a one week project. Master electricians receive
Stells [14]

Answer:

The BJ Electrical Company

The BJ Electrical Company should hire:

8 master electricians and

22 apprentices

in order to accomplish the project and still meet the contract safety requirements.

Step-by-step explanation:

Number of workers needed = 30

Class of workers:

Master electrician, with per week salary = $750 per worker

Apprentices, with per week salary = $350 per worker

Number of inspection hours required from each master electrician = 3 hours

Total inspection hours for the project = 25 hours

Average number of master electricians needed = 25/3 = 8.333 = 8

Number of each type of worker needed:

Master electricians = 8

Apprentices = 22 (30 - 8)

Cost to be incurred for workers:

Master electricians = $6,000 (8 * $750)

Apprentices =               7,700 (22 * $350)

Total labor cost =      $13,700

5 0
3 years ago
PLEASE HELP ASAP I WILL MARK BRAINLIEST
Marizza181 [45]

Answer:

I think it's parallel to the base through the vertex

4 0
3 years ago
F(x)=-3/4x+9 what are the steps for finding f^-1(x)
ozzi

The inverse function f^{-1}(x) is such that

f\left(f^{-1}(x)\right) = x

If f(x)=-\frac34x+9, then we have

f\left(f^{-1}(x)\right) = -\dfrac34f^{-1}(x)+9 = x

Solve for the inverse :

-\dfrac34f^{-1}(x)+9 = x \\\\ -\dfrac34f^{-1}(x) = x-9 \\\\ f^{-1}(x) = -\dfrac43(x-9) \\\\ \boxed{f^{-1}(x) = -\dfrac43x+12}

5 0
2 years ago
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