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Anastasy [175]
3 years ago
7

A car travels at an average rate of speed of 75 miles per hour. How many hours would it take you to

Mathematics
1 answer:
Simora [160]3 years ago
7 0

Answer:

6 hours

Step-by-step explanation:

75 x 6 = 450

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If 2x + 5 = 82, then 12x = ?<br> A 5<br> B<br> 10<br> C 15<br> D 20
KengaRu [80]

Answer:

2x= 38.5

Step-by-step explanation:

I'm not sure where u got 12x but 2 x = 38.5:

2x + 5 =82

subtract 5 for 82

2x = 77

77 divided by 2 is 38.5

x = 38.5

hope this helps :)

5 0
3 years ago
The price of a house DECREASED from $82500 to $77500. Calculate the PERCENTAGE DECREASE
Igoryamba

Answer:

6.06%

Step-by-step explanation:

percentage \: decrease \\  \\  =  \frac{82500 - 77500}{82500}  \times 100 \\  \\  =  \frac{5000 \times 100}{82500}  \\  \\  =  \frac{500000}{82500}  \\  \\  = 6.06060606 \\  \\  = 6.06 \%

7 0
3 years ago
Use a graphing calculator to find the value of the correlation coefficient r and determine if there is a strong correlation amon
Natali [406]

The value of the correlation is -0.0721 and it is a weak negative correlation

<h3>How to determine the correlation coefficient?</h3>

The points are given as:

(12, 28), (15, 50), (18, 14), (21, 28), (24, 36)

Enter the above points in a graphing calculator.

From the graphing calculator, we have the following summary:

<u>X Values</u>

  • Sum X = 90
  • Mean = 18
  • ∑(X - Mx)^2 = SSx = 90

<u>Y Values</u>

  • Sum Y = 156
  • Mean = 31.2
  • ∑(Y - My)^2 = SSy = 692.8

<u>X and Y Combined</u>

  • N = 5
  • ∑(X - Mx)(Y - My) = -18

<u>R Calculation</u>

r = ∑((X - My)(Y - Mx)) / √((SSx)(SSy))

This gives

r = -18 / √((90)(692.8)) = -0.0721

So, the correlation coefficient is -0.0721

The above is a negative correlation because it is less than 0 and it is a weak correlation because it is closer to 0 than -1

Hence, the correlation is a weak negative correlation

Read more about correlation coefficient at:

brainly.com/question/27226153

#SPJ1

7 0
2 years ago
Determine which rate should be used to complete the conversion: 12 gallons per hour to gallons per minute.
Neporo4naja [7]
B.....................
5 0
2 years ago
Given the functions:<br> g(n) = 3n - 5<br> f(n) = n2 + 50<br> Find:<br> (g+f)(8)
puteri [66]

Answer:

(g + f)(8) =133

Step-by-step explanation:

Given

g(n) = 3n - 5

f(n) = n^2 + 50

Required

(g + f)(8)

This is calculated as:

(g + f)(n) =g(n) + f(n)

So, we have:

(g + f)(n) =3n - 5 + n^2  +50

Substitute 8 for n

(g + f)(8) =3*8 - 5 + 8^2  +50

(g + f)(8) =24 - 5 + 64  +50

(g + f)(8) =133

7 0
3 years ago
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