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4 years ago

What is 2 1/2 × 2 Show your work

1 answer:

4 0

So 2 1/2 x 2 is you make turn in to 5/2 and you also turn the 2 in to 2/1
so 5/2 x 2/1 is 5

I'm sure that the correct answer but idk that you understand the work

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Use the equation r =2.1x^2 -14.3x +35, where x is the number of years after 2000, to determine the revenue from the sales of U.S

xxMikexx [17]

Answer:

Step-by-step explanation:

Given that:

$r = 2.1x^2 - 14.3x + 35$

For year 2000; x = 0

So; $r (0) = 2.1(0)^2 - 14.3(0) + 35$

$r (0) = 35$

For year 2001; x = 1

$r (1) = 2.1(1)^2 - 14.3(1) + 35$

$r (1) =22.8$

For year 2002; x = 2

$r (2) = 2.1(2)^2 - 14.3(2) + 35$

$r (2) = 14.8$

For year 2003; x = 3

$r (3) = 2.1(3)^2 - 14.3(3) + 35$

$r (3) = 11$

For year 2005; x = 5

$r (5) = 2.1(5)^2 - 14.3(5) + 35$

r(5) = 16

For year 2010; x = 10

$r (10) = 2.1(10)^2 - 14.3(10) + 35$

$r(10) = 102$

For year 2018; x =18

$r(18) = 2.1(18)^2 - 14.3 (18) + 35$

$r(18) = 458$

Thus, the table can be presented as seen below.

Year 2000 2001 2002 2003 2005 2010 2018

x 0 1 2 3 5 10 18

r(x) 35 22.8 14.8 11 16 102 458

SO, we will notice that the revenue for the albums starts decreasing and when it reaches the minimum, it started increasing with increasing x.

The attribute behind this trend is because the revenue function r(x) typically implies that it is a quadratic function.

6 0

3 years ago

6 cakes cost £6.48 how much does one cost

sveta [45]

6.48 divide by 6 and u will get the answer

8 0

3 years ago

24 is 75 percent of what number?

KonstantinChe [14]

the calculated percentage of 75 anf 24 is 18

7 0

3 years ago

F(x)=−x+5, find f(-3)f(−3).

Rudiy27

Answer:

f(-3)= - (-3)+5= +3 +5 = 8

7 0

3 years ago

5) Two machines M1, M2 are used to manufacture resistors with a design

Basile [38]

Answer:

Since M1 has the higher probability of being in the desired range, we choose M1.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Two machines M1, M2 are used to manufacture resistors with a design specification of 1000 ohm with 10% tolerance.

So we need the machines to be within 1000 - 0.1*1000 = 900 ohms and 1000 + 0.1*1000 = 1100 ohms.

For each machine, we need to find the probabilty of the machine being in this range. We choose the one with the higher probability.

M1:

Resistors of M1 are found to follow normal distribution with mean 1050 ohm and standard deviation of 100 ohm. This means that $\mu = 1050, \sigma = 100$