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N76 [4]
3 years ago
14

Plaese help me finish this part of the study guide please

Mathematics
1 answer:
scZoUnD [109]3 years ago
3 0

Answer:

Part A: The equations are:

y = -1/2x + 2, and

y = 3x - 5

Part B: The solution is (2,1)

Step-by-step explanation:

Part A: There are two equations we need to find, each line is the graph of a function.Graphs are written in y = mx + b, m is the slope, which is the change in y divided by the change in x, and b is the y - intercept. To find the function of the first graph, the one going slightly down, the slope is: y goes down by one, and x increases by 2, so change in y/ change in x is -1/2. The y - intercept is where the graph goes through the point where x is 0, on this graph, the point is (0,2), the y - intercept is 2, so y = mx + b is y = -1/2x + 2

For the other equation, slope is when y increases by 3, x increases by 1, so 3/1, or 3. The y - intercept is -5, so y = 3x + (-5), or y = 3x - 5

Part B: The solution to this equation is the point where both of the functions meet, here, this point is (2,1), y is 2 and x is 1.

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ValentinkaMS [17]
<span>56 because 0+110, 1+109, 2+108.......55+55.  

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3 0
3 years ago
Read 2 more answers
Need help fast don't understand both A and B show work please
Shkiper50 [21]
Problem A
Usually the number of bits in a byte is 8 or 16 or 32 and recently 64. You don't have to write a formula to restrict it to this number of bits. You are not asked to do so. The general formula is 2^n - 1 for the problem of Millie and her golden keys. Somehow the system can be made to choose the right number of bits. Apple IIe s for example, used 8 bits and there was a location that told the processor that fact.

2^n - 1 <<<<< Answer

Problem B
In this case n = 4
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5 0
4 years ago
Jenny is saving for a bike that cost $150. She has saved up $50. so far which inequality represents the amount of money, m, Jenn
bixtya [17]

Answer:

Inequality for the amount that Jenny still needs to save is m ≥ $100.

Step-by-step explanation:

Calculation for the amount required:

        Total money for the bike = $150.

        Already saved amount = $50

        Additional required amount = $150 - $50 = $100

Therefore, Jenny requires at least $100 more or she requires the amount that is greater than or equal to $100.

Representing this information in inequality form,

  • If m is the required amount of money then,

                                           m ≥ $100.

6 0
3 years ago
Help please it is simple
Ira Lisetskai [31]

Answer:

22 Inches Squared

Step-by-step explanation:

A=2(wl+hl+hw)

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w = 5

h = 1

A=2(5*1+1*1+1*5)\\A=2(5+1+5)\\A=2(11)\\A=22

The surface area should be 22in^2.

Brainilest appreciated.

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3 years ago
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Suppose that 16% of the population of the U.S. is left-handed. If a random sample of 170 people from the U.S. is chosen, approxi
Shalnov [3]

Answer:

0.6064 = 60.64% probability that fewer than 29 are left-handed.

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed distributions can be 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.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

16% of the population of the U.S. is left-handed.

This means that p = 0.16

Sample of 170 people

This means that n = 170

Mean and standard deviation:

\mu = E(X) = np = 170*0.16 = 27.2

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{170*0.16*0.84} = 4.78

Probability that fewer than 29 are left-handed.

Using continuity correction, this is P(X < 29 - 0.5) = P(X < 28.5), which is the pvalue of Z when X = 28.5. So

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

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Z = 0.27 has a pvalue of 0.6064

0.6064 = 60.64% probability that fewer than 29 are left-handed.

6 0
3 years ago
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