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kupik [55]
3 years ago
7

Need help ASAP, I am really confused!

Mathematics
1 answer:
guajiro [1.7K]3 years ago
4 0

x=2 and y = 6 for your awnser hope it helped

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The R-value of insulation is a measure of its ability to resist heat transfer. For fiber-glass insulation, 3½ inches is rated at
Solnce55 [7]

Answer:

R = \dfrac{16}{5}t + \dfrac{1}{5}

where R is the R-value and t is the thickness in inches.

Step-by-step explanation:

We are given the following in the question:

The  R-value of fiberglass insulation and f its thickness have a linear relation.

Let R be the R-value and t be the thickness. Then, the equation can be written as:

R = at + b

where a and b are constants.

When t = 3.5, R = 11

11 = 3.5a + b

When t = 6, R = 19

19 = 6a + b

Solving the two equation, using the elimination method, we have,

19-11 = 6a + b-(3.5a + b)\\8 = 2.5a\\\\\Rightarrow a = \dfrac{16}{5}\\\\11 = 6(\dfrac{16}{5}) + b\\\\\Rightarrow b = \dfrac{1}{5}

Thus, the linear relationship is given by:

R = \dfrac{16}{5}t + \dfrac{1}{5}

where R is the R-value and t is the thickness in inches.

8 0
3 years ago
Melanie made a circular necklace. She puts beads evenly spaced around the necklace. If the 4th bead is directly across from the
Tpy6a [65]

Its 12, becuse if its a Circle then you can look at it the same way you look at a clock which has 12 numbers on it and 4 and 11 are directly across each other.

7 0
3 years ago
Use the distance formula to find the unknown value. d= 171 mi, r= 19 mi/min, t= ?
mash [69]
D=rt
d/r=t
d=171
r=17
171/19=t=9

9 minutes is the answer
8 0
3 years ago
H - 20 = 1/2(H - 24) + 13<br><br> Pls help me
lilavasa [31]

Answer:

H-20=H-24/2+13

H-20=H-24+26/2

2(H-20)=H-24+26

2H-40=H+2

2H-H=2+40

H=42

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the answer to 0.3 x 3 1/3 =
melisa1 [442]

Answer:

1

Step-by-step explanation:

Hope this helpsss

3 0
3 years ago
Read 2 more answers
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