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34kurt
2 years ago
15

The diameter of the planet Mercury is 4.87×103 kilometers. The diameter of the planet Venus is 1.21×104kilometers. The diameter

of the planet Earth is 1.28×104 kilometers. The diameter of Mars is 6.79×103 kilometers. Which planet has the smallest diameter?
Question 2 options:

Mars


Mercury


Venus


Earth
Mathematics
2 answers:
kow [346]2 years ago
5 0

Answer: Venus

Step-by-step explanation:

Vlada [557]2 years ago
4 0

Answer:

  • Mercury, then Mars

Step-by-step explanation:

<u>Given diameters of planets:</u>

  • Mercury ⇒     4.87 × 10³ km  =  4 870 km
  • Venus ⇒        1.21 × 10⁴ km  =    12 100 km
  • Earth ⇒          1.28 × 10⁴ km  =   12 800 km
  • Mars ⇒           6.79 × 10³ km  =  6 790 km

Compared, we see the smallest value belongs to Mercury

The second smallest planet is Mars

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3 years ago
In ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45. What is the value of the cosine of ∠X to the nearest hundredth?
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The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

Step-by-step explanation:

The given is,

                   In ΔWXY, ∠Y=90°

                        XW = 53

                         YX = 28

                        WY = 45

Step:1

             Ref the attachment,

             Given triangle XWY is right angled triangle.

             Trigonometric ratio's,

                              Cos ∅  = \frac{Adj}{Hyp}    

             For the given attachment, the trigonometric ratio becomes,

                              Cos ∅  = \frac{XY}{XW}.....................................(1)

             Let, ∠X = ∅

             Where, XY = 28

                         XW =  53

             Equation (1) becomes,

                                 Cos ∅  = \frac{28}{53}

                                 Cos ∅ = 0.5283

                                        ∅ = cos^{-1} (0.5283)

                                        ∅ = 58.109°

Result:

          The value of ∠X = 58.11°, If ΔWXY, the measure of ∠Y=90°, XW = 53, YX = 28, and WY = 45.

             

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