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Nuetrik [128]
3 years ago
7

Describe the error in evaluating the power: (0.4)^2=2(0.4)=0.8 PLEASE HELP ME!!!

Mathematics
2 answers:
Drupady [299]3 years ago
6 0
(0.4)² = (0.4).(0.4) = 0.16

His error is, instead of raising (0.4) to exponent 2, he multiplied (0.4) by 2 , obviously which is wrong


Kipish [7]3 years ago
6 0
What class is this?!!

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HELP ME PLEASE!<br><br> In triangle FGH, GH=1, FG=12, and GH=sq. root of 145
topjm [15]

Answer:

B&C: tan F=0.0833 & tan H=12.0000

Step-by-step explanation:

The tangent relationship is always opposite/adjacent.

When F is the reference angle, side GH (1) is the opposite side and side FG (12) is the adjacent.

1/12 is 0.0833

When H is the reference angle, FG (12) is the opposite and GH (1) is the adjacent.

12/1 is 12.

3 0
3 years ago
Suppose you received a job offer with a starting salary of $48,500 per year and a guaranteed raise of $1200 per year. Find the n
LuckyWell [14K]

Answer:

  • 7 years

Step-by-step explanation:

<u>This is going to be an arithmetic progression:</u>

  • 48500, 48500 + 1200, 48500 + 1200*2, ...

<u>So the first term is </u>

  • a₁ = 48500

<u>and the common difference is </u>

  • d = 1200

<u>Sum of AP is:</u>

  • S = (a₁ + aₙ)*n/2 = (2a₁ + (n - 1)d)*n/2

<u>Substitute and solve for n:</u>

  • (2*48500 + (n - 1)*1200)*n/2 = 321000
  • (97000 + 1200n - 1200)n = 642000
  • 1200n² + 95800n - 642000 = 0
  • 6n² + 479n - 3210 = 0

<u>Solving we get a positive root of:</u>

  • n ≈ 6.21 and it rounds up to 7 years

3 0
3 years ago
Someone plzzz help! I need the answers and show my work..
pochemuha

I need a better picture then I could answer

7 0
2 years ago
Read 2 more answers
How do you turn -132/8 in to a division problem
sashaice [31]
-132 divided by 8
-132 / 8 = -16.5
6 0
3 years ago
Evaluate each expression |31|-|-1|
Alenkasestr [34]

That would be evaluated to 31+1 because you have to keep change flip. Keep the 31, change the symbol to addition, then flip the negative 1 to a positive number.

8 0
3 years ago
Read 2 more answers
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