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ollegr [7]
3 years ago
7

A machine uses pieces of tape to seal packages. it cuts the tape into pieces exactly 2.375 inches long. if it uses 4 pieces of t

ape for a package, how many packages can it seal with a roll of tape 1,900 inches long?
A. 600 packages
B. 800 packages
C. 400 packages
D. 200 packages
Mathematics
2 answers:
IrinaVladis [17]3 years ago
7 0

Answer: 200 packages since 9.5 inches is used for a packages for 1900 will be 1900/9.5



ohaa [14]3 years ago
7 0

to seal a package  4* 2.375 = 9.5 inches of tape

1900/9.5 = 200 so we can seal 200 packages

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Joes age (j) is half Martha’s (m). Combined, their age is 42. What are their ages?
svp [43]

Answer:

Joe is 14.

Martha is 28.

Step-by-step explanation:

Use the variables and information from the question to make equations.

If Joe's age is half Martha's:

(1/2)m = j     OR     2j = m

If their ages combined is 42:

m + j = 42

We can substitute the equation m=2j into equation m + j = 42, replacing "m".

m + j = 42    Substitute m for 2j

2j + j = 42     Combine like terms, terms with same varables

3j = 42     Divide both sides by 3 to isolate j

j = 14       Joe's age

Since j = 14, we can substitute it into equation m=2j to find "m".

m = 2j       Substitute j for 14

m = 2(14)     Simplify

m = 28       Martha's age

Therefore Joe is 14 and Martha is 28.

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ArbitrLikvidat [17]
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ki77a [65]

Answer: A. (-8,-3)

Step-by-step explanation:

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The difference between the prediction interval and the confidence interval is that A. the prediction interval is narrower than t
Kitty [74]

Answer:

<em>The prediction interval provides an interval estimation for a particular value of y while the confidence interval does it for the expected value of y. </em>

Step-by-step explanation:

<em>A</em><em>. the prediction interval is narrower than the confidence interval.</em>

the prediction interval is always wider than the confidence interval.

<em>B</em><em>. the prediction interval provides an interval estimation for the expected value of y while the confidence interval does it for a particular value of y.</em>

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<em>C</em><em>. the prediction interval provides an interval estimation for a particular value of y while the confidence interval does it for the expected value of y. </em>

<em>True</em>

<em>D.</em><em> the confidence interval is wider than the prediction interval.</em>

the prediction interval is  wider

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You can see it much easier if take away all the clutter. Redraw the diagram and take way a d and especially c.

You should be left with only line b and the two triangles. You can see it much easier if you do that. Then just look at the parallel lines of the triangles. They are right across from each other. 
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