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KatRina [158]
3 years ago
5

If the rvalue, or correlation coefficient, of a data set is negative, the

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0

Answer:

Step-by-step explanation:

The correlation coefficient being negative means that the tendency of the dots in the plane is a negative slope; the coefficientof determination tells you how close the dots are to being on the linear regression equation. This vaue falls between 0 and +1. This value will never be negative; the answer is false.

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Here are two offers for batteries.
trapecia [35]

OFFER A is cheaper.

Step-by-step explanation:

Given,

OFFER A

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Pay for 3 packs get 1 free

And

OFFER A

Pack of 5

£2.75

Pay for 3 packs get 1 free

To find which offer is cheaper.

<u>For OFFER A</u>

For 4 Packets he needs to pay £2.75

He needs to buy 40 batteries.

He needs to buy 40÷(4×5) = 2 packets.

Total cost = £2.75 ×2 = £5.5

<u>For OFFER B</u>

For 4 Packets he needs to pay £2.52

He needs to buy 40 batteries.

He needs to buy 10 packets.

After discount he has to pay = £2.52 -(£2.52 ×\frac{1}{3}) = £1.68

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Hence,

OFFER A is cheaper.

7 0
3 years ago
150 centimeters is equivalent to
Elina [12.6K]
<span>150 centimeters is equivalent to 1 1/2 meters </span>
6 0
3 years ago
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C/- 4 = 16<br> please help
Yuri [45]

Answer:

c = -64

Explanation:

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multiply the equation by -4,

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3 years ago
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A school is designed so that 5 hallways meet at the library in the shape of a regular pentagon. Find the measure of one of the e
marusya05 [52]
We do this by dividing 360°<span> by the number of sides, which is 8. (b) Calculate the size of each interior angle in the regular octagon. We do this by subtracting the size of each exterior angle, which is 45°, from </span>180°<span>. A regular polygon has equal exterior angles of 72°</span>

4 0
4 years ago
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Sav [38]

Answer:

15 Kg cm²

Step-by-step explanation:

Given that V varies inversely with P then the equation relating them is

V = \frac{k}{P} ← k is the constant of variation

To find k use the condition

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360 = \frac{k}{20} ( multiply both sides by 20 )

k = 7200

V = \frac{7200}{P} ← equation of variation

When V = 480, then

480 = \frac{7200}{P} ( multiply both sides by P )

480P = 7200 ( divide both sides by 480 )

P = 15

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3 years ago
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