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anygoal [31]
3 years ago
15

a triangle has area 49.5 cm^2. if the base of the triangle is 9 cm, what is the height of the triangle

Mathematics
1 answer:
Anika [276]3 years ago
3 0
Area of a triangle = (height * base ) / 2

height = (Area * 2) / base
height = (49.5 * 2) / 9
height = 99 / 9
height = 10 cm²
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249u = 66 or 249 X u = 66

Step-by-step explanation:

when u is multiplied by 249 you get 66

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-2(m + 4) = 40 please help
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3 0
3 years ago
Priya and Joe travel the same 16.8 km route. Priya starts at 9.00 am and walks at a constant speed of 6 km/h Joe starts at 9.30
andrey2020 [161]

Answer:

12:05 PM

Step-by-step explanation:

Priya started at 9:00 AM.

Speed of Priya = 6 km/hr

Joe started at 9:30 AM.

Time at which Joe overtakes Priya = 10:20 AM

Total time taken by Priya = 1 hour 20 min = \frac{4}{3}\ hr

Total time taken by Joe = 50 min = \frac{5}{6}\ hr

Distance traveled by Priya and Joe is same.

Formula for distance is:

Distance =Speed\times Time

Distance covered by Priya = 6 \times \frac{4}{3} km

Let speed of Joe = S km/h

Distance covered by Joe = S \times \frac{5}{6}

S \times \dfrac{5}{6} = 6 \times \dfrac{4}{3}\\\Rightarrow S =\dfrac{48}{5}\ km/hr

Total distance to be covered = 16.8 km

Total time to be taken by Joe =

\dfrac{16.8}{\frac{48}5} = \dfrac{16.8\times 5}{48} = \dfrac{84}{48} = 1.75\ hours

1.75 hours mean 1 hour and 45 minutes.

Finishing time at which Joe finishes = 9:30 AM + 1 hour 45 minutes = <em>12:05 PM</em>

8 0
3 years ago
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