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3 years ago

Solve the system of equations and choose the correct ordered pair.

Mathematics

2 answers:

vodka [1.7K]3 years ago

6 0

Hope this helps:);:;

Ilia_Sergeevich [38]3 years ago

3 0

The answer is C. Would you like me to explain how I got that?

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A caterpillar moves at a constant speed of 1/2 inches per second. Let x represent the time travel in seconds and y represent the

Anika [276]

Step-by-step explanation:

Expression = 1/2x = y

Easy algebraic expression

~Done~

5 0

2 years ago

A sample of 5 strings of thread is randomly selected and the following thicknesses are measured in millimeters. Give a point est

xxTIMURxx [149]

Answer:

Point estimate for the population variance = 3.92 * $10^{-3}$ .

Step-by-step explanation:

We are given that a sample of 5 strings of thread is randomly selected and the following thicknesses are measured in millimeters ;

X X - $Xbar$ $(X-Xbar)^{2}$

1.13 1.13 - 1.188 = -0.058 3.364 * $10^{-3}$

1.15 1.15 - 1.188 = -0.038 1.444 * $10^{-3}$

1.24 1.24 - 1.188 = 0.052 2.704 * $10^{-3}$

1.27 1.27 - 1.188 = 0.082 6.724 * $10^{-3}$

$\sum (X-Xbar)^{2}$ = 0.01568

Firstly, Mean of above data, $Xbar$ = $\frac{\sum X}{n}$ = $\frac{1.15+1.24+1.15+1.27+1.13}{5}$ = 1.188

Point estimate of Population Variance = Sample variance

= $\frac{\sum (X-Xbar)^{2}}{n-1}$ = $\frac{0.01568}{4}$ = 3.92 * $10^{-3}$ .

Therefore, point estimate for the population variance = 3.92 * $10^{-3}$ .

5 0

3 years ago

Read 2 more answers

For a recipe Harris uses 2 cups of white sugar for each cup of brown sugar. How many cups of brown sugar does Harris use when he

loris [4]

A is your answer because he uses half the amount of brown sugar as he does white sugar.

4 0

3 years ago

Which correlation coefficient represents a moderate negative correlation? a.r = –0.04 b. r = –0.24 c.r = –0.64d. r = –0.94

jonny [76]

Answer: r = -0.64

Step-by-step explanation:

The correlation coefficient is a measure of the strength of the linear relationship between two variables and is denoted by r. Values between 0.3 and 0.7 indicate a moderate positive (negative) linear relationship .

Values between -0.3 and -0.7 indicate a moderate negative linear relationship .

The only value of r in the option is r= -0.64 lies in given interval of moderate negative linear relationship .

Therefore, c is the right answer.

5 0

3 years ago

Read 2 more answers

Each bookmark requires 0.25 yards of ribbon LaTreace wants to make 74 bookmarks how many feet of ribbon must she buy?

Nimfa-mama [501]

Answer:

55 1/2 feet

Step-by-step explanation:

.25 yards = 9 inches

9 inches x 74 bookmarks= 666 inches

12 inches = 1 foot

666 inches/12 inches = 55.5 feet

5 0

3 years ago