Geometry, I need help thanks

Mathematics

2 answers:

Maurinko [17]3 years ago

8 0

It’s A buddy! i just did this one for another student also

earnstyle [38]3 years ago

8 0

Answer:

Step-by-step explanation:

Just trust bro

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An archers arrow follows a parabolic path. The height of the f(x) is given by f(x) =-16x^2+200x+4 in feet. Find the maximum heig

diamong [38]

Maximum of function $f(x)=ax^2+bx+c$ where $a \neq 0$ you can find by using this formula: $y_{\max}= - \dfrac{\Delta}{4a}=-\dfrac{b^2-4ac}{4a}=\dfrac{4ac-b^2}{4a}=c-\dfrac{b^2}{4a}$

In height function you've got:

a= -16
b= 200
c= 4

Just substitute! You'll get

$y_{\max} = 4 - \dfrac{200^2}{4 \cdot (-16)}=4-\dfrac{40 \ 000}{-64}=4+\dfrac{40 \ 000}{64}=4+625=629$

Maximum height is 629 [units]

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3 years ago

An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind

mina [271]

Complete Question

An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind speed measurements were randomly selected from within the path of the tornado. Suppose the mean wind speed for this tornado really is greater than 261 mph with a sample standard Deviation 41.09 mph. Based on the data, if we fined little to no evidence against the null hypothesis that the mean wind speed is 261 mph, we have made _______________.

Answer:

$P-value=0.3322$