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Alexxandr [17]
3 years ago
8

Which equation represents the line that passes through (-8,11) and (4, 7/2)

Mathematics
1 answer:
-Dominant- [34]3 years ago
3 0

Answer:

Y=-5/8X+6

Step-by-step explanation:

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The circumference of the equator of a sphere was measured to be 82 82 cm with a possible error of 0.5 0.5 cm. Use linear approxi
True [87]

Answer:

The maximum error in the calculated surface area is approximately 8.3083 square centimeters.

Step-by-step explanation:

The circumference (s), in centimeters, and the surface area (A_{s}), in square centimeters, of a sphere are represented by following formulas:

A_{s} = 4\pi\cdot r^{2} (1)

s = 2\pi\cdot r (2)

Where r is the radius of the sphere, in centimeters.

By applying (2) in (1), we derive this expression:

A_{s} = 4\pi\cdot \left(\frac{s}{2\pi} \right)^{2}

A_{s} = \frac{s^{2}}{\pi^{2}} (3)

By definition of Total Differential, which is equivalent to definition of Linear Approximation in this case, we determine an expression for the maximum error in the calculated surface area (\Delta A_{s}), in square centimeters:

\Delta A_{s} = \frac{\partial A_{s}}{\partial s} \cdot \Delta s

\Delta A_{s} = \frac{2\cdot s\cdot \Delta s}{\pi^{2}} (4)

Where:

s - Measure circumference, in centimeters.

\Delta s - Possible error in circumference, in centimeters.

If we know that s = 82\,cm and \Delta s = 0.5\,cm, then the maximum error is:

\Delta A_{s} \approx 8.3083\,cm^{2}

The maximum error in the calculated surface area is approximately 8.3083 square centimeters.

6 0
3 years ago
P(A)= .50 P(B)=.80 P(A and B)=.20 what is P(B/A)
Reil [10]

Answer:

Final answer is P(B|A)=0.40.

Step-by-step explanation:

Given that P(A)= .50, P(B)=.80 , and P(A and B)=.20.

Now we need to find about what is the value of P(B/A).

So apply the formula of compound probability :

P(A and B) = P(A)*P(B/A)

Plug the given values into above formula

0.20 = 0.50*P(B/A)

0.50*P(B/A) = 0.20

P(B|A)=\frac{0.20}{0.50}

P(B|A)=0.40

Hence final answer is P(B|A)=0.40.

5 0
3 years ago
Susan had 28 ft of ribbon to complete a wreath project. She needs 3 1/4 ft of ribbon for each wreath project. How many wreaths w
olya-2409 [2.1K]

Answer:

She will be able to make 8 wreaths

Step-by-step explanation:

I got my answer by first converting 3 1/4 into 13/4. I then divide 28 by 13/4 which was multiplying 28 by 4/13.

I got 112 when I did 28 × 4

I then divided 112 by 13

and got 8.615.

Since they are asking for how much wreaths she could make, it is going to be 8

3 0
3 years ago
Is -12.452 a rational or irrational number??
Over [174]

Answer:

Rational

Step-by-step explanation:

Rational number is kind of like a number that you can understand, i.e 4.567,

7.67.

Irrational number is kind of like a number that you can't really understand, like π, pi. 3.1415926535897...

3 0
3 years ago
Read 2 more answers
Is my answer correct
Jobisdone [24]
Yes that's correct! :-)
8 0
4 years ago
Read 2 more answers
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