Here is the set using D = rt.

Jet 1:

rate = 377 mph

time = x

Distance = 9128 miles

Jet 2:

rate = 275 mph

time = x

Distance = 9128 miles

Equation:

377x + 275x = 9128

You finish.

8 0

3 years ago

Frequent food questionnaires (FFQ) are a simple way to obtain information on the foods individuals consume by asking them questi

Ilia_Sergeevich [38]

Answer:

Asnwer is A

Step-by-step explanation:

since the correlation between the FFQ and DR is 0.89

x y xy $x^{2}$ $y^{2}$

8.26 1.68 13.8768 68. 2276 2.8224

0.83 0 0 06889 0

20.13 15.1 303.963 405.2169 228.01

11.16 7.49 83.5884 124.5456 56.1001

7.18 12.84 92.1912 51.5524 164.8656

1.76 0 0 3.0976 0

22.46 25.06 567.8596 513.4756 628.0036

-----------------------------------------------------------------------------------------------------------

∑ $x_{i}$ = ∑ $y_{i}$ = ∑ $x_{i} y_{i}$ = ∑ $x_{i}^{2} y_{i}^{2}$ = ∑ $y_{i} ^{2}$ =

71.98 62.17 1061.479 1166.8046 1079.8017

-------------------------------------------------------------------------------------------------------------

Correlation Coefficient or Pearson Correlation is given by:

the rest calculation is in the attached image

3 0

3 years ago

What is the total surface area of this rectangular pyramid?

umka2103 [35]

Answer:

225 square feet

Step-by-step explanation:

the base of the pyramid would be 76 ft², since 12*6=72. Then you get the surface area of the sides. 2 of the sides would be 48 ft², since (12*8)/2=48. The other 2 sides would be 28.5 ft², since (6*9.5)/2-28.5. Then you just add the surface areas of all the sides; 76+48+48+28.5+28.5 to get 225.

Hope this helps! :)

4 0

2 years ago

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