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3 years ago

5

Madison has test scores of 93, 82, 86, and 75. What is the mean? answer as fast a possible

1 answer:

rusak2 [61]3 years ago

6 0

Answer:

Mean is 84

Step-by-step explanation:

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Let r(t)=⟨t2,1−t,4t⟩. calculate the derivative of r(t)⋅a(t) at t=5, assuming that a(5)=⟨−4,4,−5⟩ and a′(5)=⟨−5,9,3⟩

erastovalidia [21]

$\mathbf r(t)=\langle t^2,1-t,4t\rangle$
$\implies\mathbf r'(t)=\langle 2t,-1,4\rangle$

$\dfrac{\mathrm d(\mathbf r(t)\cdot\mathbf a(t))}{\mathrm dt}\bigg|_{t=5}=\mathbf r'(5)\cdot\mathbf a(5)+\mathbf r(5)\cdot\mathbf a'(5)$
$=\langle10,-1,4\rangle\cdot\langle-4,4,-5\rangle+\langle25,-4,20\rangle\cdot\langle-5,9,3\rangle$
$=(-40-4-20)+(-125-36+60)$
$=-165$

6 0

3 years ago

Someone helpp !! I don’t understand this at all

Naddika [18.5K]

Answer:

∠AB=9

Step-by-step explanation:

<em>the pyagrothyes therom= </em> $a^{2}$ <em>+</em> $b^{2}$ <em>=</em> $c^{2}$

<em>to find ∠AB we need to find the height of the triangle.</em>

<em>replace the variables:</em>

$a^{2}$ <em>+</em> $6^{2}$ <em>=</em> $9^{2}$

<em>=</em> $9^{2}$ <em>-</em> $6^{2}$ <em>=</em> $a^{2}$

<em>simplify:</em>

<em>81-36=</em> $\sqrt{45}$

<em>now we solve for ∠AB</em>

<em>replace the variables:</em>

$6^{2}$ <em>+</em> $\sqrt{45}$ <em>=</em> $c^{2}$

<em>simplify:</em>

<em>36+45=</em> $\sqrt{81}$

$\sqrt{81}$ <em>=9</em>

I hope this helps you!!

have a nice day!!

4 0

2 years ago

What is the constant rate of change shown in the graph?

AnnyKZ [126]

Answer:

10

Step-by-step explanation:

For every lawn mowed, the amount earned increases by 10 dollars

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3 years ago

In a population that is normally distributed that has a mean of 45 with a standard

elena-14-01-66 [18.8K]

I think I would be 5

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3 years ago

Which of the following would have NO association if plotted on a scatterplot?

Scorpion4ik [409]

B because the amount of toys you have and calories you eat do not depend on one another

5 0

3 years ago

Read 2 more answers