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4 years ago

Need help with this assoon as possible

Mathematics

2 answers:

mrs_skeptik [129]4 years ago

4 0

It's asking for the rate of change, which is the 10
so I think that means that a plain pizza costs $10

Ierofanga [76]4 years ago

4 0

C is the answer number of topping cost2$ each

and rate of change will be d=2t+10
if t=1 then d=12,
t=2 d=14
t=3 d=16

rate of change is change in d/change in t
2

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Need help with these two questions linear relations.

wel

Answer:

b. y = -7x + 4

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-28 = -7x

4 = x

3. y = -7(0)+4= 4

4. 0 = -7x+4

-4= -7x

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c. 3y - 5x = 15

1. 3y - 5(6)

3y-30=15

3y=45

y = 15

2. 3(-10)-5x=15

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Step-by-step explanation:

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3 years ago

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jarptica [38.1K]

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3 years ago

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The average diameter of sand dollars on a certain island is 4.00 centimeters with a standard deviation of 0.60 centimeters. If 1

blagie [28]

Answer:

0.8413 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4.00 centimeters

Standard Deviation, σ = 0.60 centimeters

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We are given that the distribution of average diameter is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

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P(diameter of sample is more than 3.85 centimeter)

P(x > 3.85)

$P( x > 3.85) = P( z > \displaystyle\frac{3.85 - 4}{0.15}) = P(z > -1)$

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Calculation the value from standard normal z table, we have,

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3 years ago

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Answer:

Step-by-step explanation:

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To make it simpler and more clear, we can let u = sin(x). So:

$\displaystyle \frac{u^2-u-2}{u-2}$

Now, it becomes obvious that we can factor, which produces:

$\displaystyle =\frac{(u-2)(u+1)}{u-2}$

Cancel:

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And substituting back:

$=\sin(x)+1$

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