2 years ago

Help I don't understand

1 answer:

6 0

Since all the triangles = 180 you just have add the angles you do have together then subtract by 180. The missing side of trangle a =39 and the missing side of b is 79.6

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A car traveled 212 km in 5 hours what was the cars average speed

Zepler [3.9K]

Answer:

42.4 mph

Step-by-step explanation:

5÷212= 42.4mph (average speed)

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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3 years ago

What is the sum of the first 7 terms of the series −4+8−16+32−... ?

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The terms appear to increase by a multiple of -2. The first 7 terms are:

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3 years ago

At noon, you are running to get to class and notice a friend 100 feet west of you, also running to class. If you are running sou

Virty [35]

Answer:

Step-by-step explanation:

Velocity of first Person $v_1=450 ft/min$

Velocity of second Person $v_2=350 ft/min$

Distance between them P=100 ft

Let x be the distance moved by 1 st and y be the distance moved by second person by the time 12:02 PM

In Triangle ABC

$BC=350 t+450 t$

$BC=800 t$

using Pythagoras

$AC^2=AB^2+BC^2$

$AC^2=100^2+(800t)^2$

differentiating with respect to time

$2\times AC\times \frac{\mathrm{d} AC}{\mathrm{d} t}=2\times (800t)\times 800$

$\frac{\mathrm{d} AC}{\mathrm{d} t}=\frac{800^2\times t}{AC}$

AC after 2 minute

$AC=1603.121 ft$

$\frac{\mathrm{d} AC}{\mathrm{d} t}=\frac{800^2\times 2}{1603.121}$

$\frac{\mathrm{d} AC}{\mathrm{d} t}=\frac{64\times 10^4\times 2}{1603.121}$

$\frac{\mathrm{d} AC}{\mathrm{d} t}=798.44 ft/min$

4 0

3 years ago