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3 years ago

Help pls i am not sure what to do

Mathematics

2 answers:

densk [106]3 years ago

5 0

The answers are:

46) 3:5
47) They intersect to form a 90 degree angle
49) Scalene

I am not sure about 48

Hope this helps :)

stiv31 [10]3 years ago

4 0

Number 49 is Acute .

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Complete the following statement.

solong [7]

Answer:

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Step-by-step explanation:

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3 years ago

Find the uncertainty in a calculated average speed from the measurements of distance and time. Average speed depends on distance

zzz [600]

Answer:

$\frac{\Delta v}{v}=0.426$

Step-by-step explanation:

you have that the average sped is given by the following formula:

$v(x,t)=\frac{x}{t}$

The uncertainty formula for a division is given by:

$\frac{\Delta v}{v}=\sqrt{(\frac{\Delta x}{x})^2+(\frac{\Delta t}{t})^2}$ (1)

Δv: uncertainty in speed

Δx: uncertainty in the distance = 0.9m

Δt: uncertainty in time = 0.7s

x: distance = 8.1m

t: time = 1.7s

You replace the values of all parameters in the equation (1):

$\frac{\Delta v}{v}=\sqrt{(\frac{0.9}{8.1})^2+(\frac{0.7}{1.7})^2}\\\\\frac{\Delta v}{v}=0.426$

Hence, the relation between the uncertainty in the average velocity is 0.426

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3 years ago

Which equation could be used to find the length of the hypotenuse?

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The first option .

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3 years ago

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3 years ago

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