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3 years ago

A number x is at least -1 and no more than 9What is the inequality ???

1 answer:

8 0

9_>x>_-1

- x would have to be less than or equal to 9, but greater than or equal to -1. the symbols for the greater than or equal to is the > with a line under it (in case you didn’t know) and same with the less than or equal to

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the power generated by an electrical circuit (in watts) as a function of its current C (in amperes) is modeled by P(c)= -15c(c-8

katen-ka-za [31]

Answer:

c = 4 A

Step-by-step explanation:

The given function P(c) = - 15 c (c-8) is actually quadratic function:

P(c) = - 15c² + 120c or parabola

The standard form of a quadratic function is:

y = ax² + bx + c

For which x is the maximum of the parabola we can find with this formula

x = - b/2a

in this case a = -15 and b = 120 and input variable is current c

c = - 120/(2 · (-15)) = - 120/ (-30) = 4 A

c = 4 A

God with you!!!

3 0

3 years ago

Read 2 more answers

Water use in the summer is normally distributed with a mean of 311.4 million gallons per day and a standard deviation of 40 mill

r-ruslan [8.4K]

Answer: 0.965

Step-by-step explanation:

Given : Water use in the summer is normally distributed with

$\mu=311.4\text{ million gallons per day}$

$\sigma=40 \text{ million gallons per day}$

Let X be the random variable that represents the quantity of water required on a particular day.

Z-score : $\dfrac{x-\mu}{\sigma}$

$\dfrac{350-311.4}{40}=0.965$

Now, the probability that a day requires more water than is stored in city reservoirs is given by:-

$P(x>350)=P(z>0.965)=1-P(z$

We can see that on comparing the above value to the given P(X > 350)= 1 - P(Z < b) , we get the value of b is 0.965.

4 0

2 years ago

Pls help!! i am confused and i don't know what to do

frutty [35]

123493929101 alakakakakakakakaka

4 0

3 years ago

Part A: solve -mk - 120 > 95 for m. Show your work.

lara31 [8.8K]

Does MK mean Mortal Kombat???

6 0

3 years ago

ADULT

Scilla [17]

Answer:

£1.62

Step-by-step explanation:

add them all up then subtract 100 and forget about the negative sign

3 0

3 years ago

A number x is at least -1 and no more than 9What is the inequality ???​

A number x is at least -1 and no more than 9What is the inequality ???