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3 years ago

9

Sheri surveyed eighty students and then generated three random samples of twenty-five student responses. The means of the sample

s are shown below.

2 answers:

Zielflug [23.3K]3 years ago

8 0

Answer:

12

Step-by-step explanation:

kap26 [50]3 years ago

7 0

Answer:

there isnt any picture so nobody can answer this

Step-by-step explanation:

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Find the dr/d(theta) for:<br>r = (theta)sin(theta) + cos(theta)

maxonik [38]

$r=\theta\sin\theta+\cos\theta$

$\dfrac{\mathrm dr}{\mathrm d\theta}=\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}+\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}$

By the product rule,

$\dfrac{\mathrm d(\theta\sin\theta)}{\mathrm d\theta}=\dfrac{\mathrm d(\theta)}{\mathrm d\theta}\sin\theta+\theta\dfrac{\mathrm d(\sin\theta)}{\mathrm d\theta}=\sin\theta+\theta\cos\theta$

and

$\dfrac{\mathrm d(\cos\theta)}{\mathrm d\theta}=-\sin\theta$

So we have

$\dfrac{\mathrm dr}{\mathrm d\theta}=\sin\theta+\theta\cos\theta-\sin\theta$

$\implies\dfrac{\mathrm dr}{\mathrm d\theta}=\theta\cos\theta$

4 0

3 years ago

AC and DG are parallel. Find the value of x, show CLEARLY how you got your answers with reasons

valentinak56 [21]

Answer:

x = 79°

Step-by-step explanation:

∠ABE = ∠BEF = 41° [Alternate angle ]

Now sum of angles of a triangle = 180°

Therefore,

∠EBF + ∠BEF + ∠BFE = 180°

60° + 41° + x = 180°

x = 180° - 60° - 41°

x = 79°

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%7By-95%7D%7B4%7D%20%3D%201" id="TexFormula1" title="\frac{y-95}{4} = 1" alt="\frac{y-9

kaheart [24]

(Y-95/4) x 4 = (1) x 4

Y - 95 = 4
+95 +95

Y= 99

3 0

4 years ago

What number is the opposite of 659? Enter your answer in the box below.

makkiz [27]

Answer:

Additive opposite = - 659

Multiplicative opposite = $\frac{1}{659}$

8 0

3 years ago

The question is what is the surface area of the three dimensional figure the choices are

Yuki888 [10]

Answer:

im not sure about this one but i think its 2. 180ft squared

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers