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Elenna [48]
3 years ago
6

Three friends have some ribbon.carol has 42 inches of ribbon,tino has 2.5 feet of ribbon,and baxter has 1.5 yards of ribbon.expr

ess the total length of ribbon the three friends have in inches,feet and yards
Mathematics
1 answer:
Alika [10]3 years ago
8 0
Part A: 2.5 ft = 30 in.
1.5 yd = 54 in.

42 + 30 = 72 in.
72 + 54 = 126 in.

So, they have one hundred twenty-six inches of ribbon.

Part B: 126 in. = 10.5 ft

In other words, they have ten and a half feet of ribbon.

Part C: 126 in. = 3.5 yd.

In other, OTHER, words, they have three and a half yards of ribbon.
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A random sample of 20 purchases showed the sample mean of $48.77 and the sample standard deviation s is $17.58. How large is the
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Answer:

<h2>$5.03</h2>

Step-by-step explanation:

Given data          

Sample Mean (M):  $48.77  

Sample Size (n): 20

Standard Deviation (σ) :  $17.58

Confidence Level: 80%

 we know that z*-Values for 80% Confidence  Levels is 1.28

the expression for margin of error is given bellow\

MOE= z*σ/√n

We can now substitute into the expression and solve for the MOE as

MOE= 1.28*17.58/√20

MOE= 22.502/4.47

MOE= 22.502/4.47

MOE= 5.03

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Step-by-step explanation:

4 0
3 years ago
What is angle DCE?<br><br> A. 34<br> B. 85<br> C. 102<br> D. 98
s2008m [1.1K]
The red line is 180 degrees. So the arcs on top of the circle all equal up to 180 degrees. the number 72 doesn't really matter cause you're trying to find out the angle of DCE which is on the other side of the circle. So you gotta find the arc length of DE which is 68 because 180-112=68. So to find the angle, you have to divide the opposite arc length by two, which is 34. 

ANSWER: A. 34. you're welcomee!!

8 0
3 years ago
Read 2 more answers
tinas rectangular living room floor measures 15 feet by 18 feet.how many square feet of carpet will tina need to cover the entir
Thepotemich [5.8K]

Hello from MrBillDoesMath!

Answer:

270 in^2



Discussion:

Area of rectangular floor = length  * width

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                                           = 270

Thank you,

MrB

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