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3 years ago

Dilma is on a 10 1/2 mile hike. She has hiked 2/3 of the total distance already. How many miles has she already hiked?

Mathematics

2 answers:

irina1246 [14]3 years ago

6 0

Hello,

Your answer would be: 7 miles

Brainliest!?!

Hope this helps!

Have a great day:)

~Rendorforestmusic

Effectus [21]3 years ago

3 0

Hello!

I believe 2/3 or 10 1/2 is 7.

Dilma has already hiked 7 miles.

I hope it helps!

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The perimeter is 72 units and the area is 149 square units.

Step-by-step explanation:

$\triangle SBA$ has coordinates $S(15,-8),B(-2,21)$ and $A(0,0)$

Using the distance formula.........

Length of side $SB = \sqrt{(15+2)^2+(-8-21)^2}= \sqrt{17^2+(-29)^2}= \sqrt{1130}$

Length of side $BA= \sqrt{(-2)^2+(21)^2}= \sqrt{445}$

Length of side $AS =\sqrt{(15)^2+(-8)^2}=\sqrt{289}=17$

So, the perimeter of the triangle will be: $(SB+BA+AS)= \sqrt{1130}+ \sqrt{445}+17 =71.71... \approx 72$ units. (Rounded to the nearest unit)

The height of the triangle for the corresponding base $SB$ is 8.89 units.

Formula for the Area of triangle, $A= \frac{1}{2}(base\times height)$

So, the area of the $\triangle SBA$ will be: $\frac{1}{2}(\sqrt{1130}\times 8.89)= 149.42... \approx 149$ square units. (Rounded to the nearest unit)