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Schach [20]
3 years ago
10

I need help ASAP please!

Mathematics
1 answer:
topjm [15]3 years ago
8 0

Answer:

  • Jan 2018: 7.83 million
  • Feb 2017: 8.12 million

Step-by-step explanation:

Your "Grandma formula" tells you ...

  N = G(1 +x/100)

Solving for G gives ...

  G = N/(1 +x/100) . . . . . . G = old value; N = new value; x = % change

For this problem, N=7.9 million.

__

1) x = 0.9, so G = 7.9/(1 +.9/100) ≈ 7.83 . . . million

7.83 million people were looking for work in January 2018.

__

2) x = -2.7, so G = 7.9/(1 -2.7/100) ≈ 8.12 . . . million

8.12 million people were looking for work in February 2017.

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Brian was asked to write x72 as a product of 2 powers with the same base in 4 different ways, using only positive exponents.
Oksana_A [137]

The equivalent expression to the value given using the laws of indices is  {x}^{4(18)}

Evaluating the options given based on the laws of indices :

  • {x}^{8}. {x}^{9}  =  {x}^{8 + 9}  =  {x}^{17}
  • {x}^{35}. {x}^{47}  =  {x}^{35 + 47}  =  {x}^{82}
  • {x}^{4(18)}  =  {x}^{4 \times 18}  =  {x}^{72}
  • {x}^{24}. {x}^{3}  =  {x}^{24 + 3}  =  {x}^{27}

Therefore, the only expression which would give a correct way of representing {x}^{72} \: is \: {x}^{4(18)}

Learn more : brainly.com/question/12937923?referrer=searchResults

8 0
2 years ago
A square with a side length of 5 inches has a area of 25 in<br><br> true or false
Goryan [66]

Answer:

TRUE

Step-by-step explanation:

5 x 5 = 25 in²

6 0
3 years ago
A friend has a 83% average before the final exam for a course. That score includes everything but the final, which counts for 25
Klio2033 [76]

Answer:

\mathrm{Best\:course\:grade\:possible:\:}87.25\%,\\\mathrm{Minimum\:score\:on\:final\:to\:earn\:at\:least\:a\:75\%\:for\:the\:course:\:}51\%

Step-by-step explanation:

Assuming the maximum score for the final is 100\%, we can multiply each score by its respective course weight and add them together to give a final score. If your friend did receive this maximum score of 100\%, their overall grade for the course would be:

83(1-0.25)+100(0.25)=\fbox{$87.25\%$}.

To find the minimum score they need to earn a 75% for the course, we set up the following equation:

83(1-0.25)+x(0.25)=75, where x is the minimum score she needs.

Solving, we get:

62.25+x(0.25)=75,\\x(0.25)=12.75,\\x=\fbox{$51\%$}.

8 0
2 years ago
Set up, but do not evaluate, the integral that represents the length of the curve given by
netineya [11]

Answer:

L = ∫₀²ᵖⁱ √((1 − sin t)² + (1 − cos t)²) dt

Step-by-step explanation:

Arc length of a parametric curve is:

L = ∫ₐᵇ √((dx/dt)² + (dy/dt)²) dt

x = t + cos t, dx/dt = 1 − sin t

y = t − sin t, dy/dt = 1 − cos t

L = ∫₀²ᵖⁱ √((1 − sin t)² + (1 − cos t)²) dt

Or, if you wish to simplify:

L = ∫₀²ᵖⁱ √(1 − 2 sin t + sin²t + 1 − 2 cos t + cos²t) dt

L = ∫₀²ᵖⁱ √(3 − 2 sin t − 2 cos t) dt

7 0
3 years ago
320% expressed as a mixed number in sinplest from is
UNO [17]
320% is equal to 3 whole parts and 20% of a part. If one part is 100, then the mixed number would be 3 20/100. However, the problem says to simplify this, so it would be, 3 1/5!
7 0
3 years ago
Read 2 more answers
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