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svlad2 [7]
3 years ago
6

At the museum you can buy 3 postcard for 5.40 6 postcards for 10.80 or 9 postcards for 16.20 What is the constant of proportiona

lity for buying postcard
Mathematics
1 answer:
Verizon [17]3 years ago
6 0
x. y
3 postcards for $5.40
6 postcards for $10.80
9 postcards for $16.20
To find the constant of proportionality, take y/x, so
$5.4/3
$10.8/6
$16.2/9
They all equal $1.80/1. As a result, the constant of proportionality is $1.80 for 1 postcard. Hope it help!
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A piece of wood is 1.75 meter long A carpenter saws off 0.8 meter from it. Then he saws the remaining piece into 2 pieces of equ
riadik2000 [5.3K]
1.75-0.8= 0.95m
0.95/2. to get equal halves would be 0.475m just under half a meter
5 0
3 years ago
A machine has four components, A, B, C, and D, set up in such a manner that all four parts must work for the machine to work pro
olchik [2.2K]

Answer:

0.756

Step-by-step explanation:

It is given that a machine has four components, A, B, C, and D.

P(A)=P(B)=0.93, P(C)=0.95,P(D)=0.92

If these components set up in such a manner that all four parts must work for the machine to work properly.

We need to find the probability that the machine works properly. It means we have to find the value of P(A\cap B\cap C\cap D).

If two events X and Y are independent, then

P(X\cap Y)=P(X)\times P(Y)

Assume the probability of one part working does not depend on the functionality of any of the other parts.

P(A\cap B\cap C\cap D)=P(A)\times P(B)\times P(C)\times P(D)

Substitute the given values.

P(A\cap B\cap C\cap D)=0.93\times 0.93\times 0.95\times 0.92

P(A\cap B\cap C\cap D)=0.7559226

P(A\cap B\cap C\cap D)\approx 0.756

Therefore, the probability that the machine works properly is 0.756.

7 0
3 years ago
A certain arithmetic sequence has the following explicit formula for the nth term: an = 3 + (n - 1)(8) The same sequence has the
zhuklara [117]
From the explicit formula:
an=3+(n-1)8
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an=3+8n-8
an=8n-5
thus 
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an=an-1+
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6 0
3 years ago
Add 1} + (-5) using the number line.
gizmo_the_mogwai [7]

Answer:

1/2

Step-by-step explanation:

1 1/3+(-5/6)

1 1/3=4/3

4/3+(-5/6)

4/3-5/6

8/6-5/6

3/6

simplify

1/2

6 0
3 years ago
Please help!!! A. (2,-22) b. (-8,-64) c. (7,-1) d.(-6,2/7)
Contact [7]
The answer is B.(-8, -64)
4 0
3 years ago
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