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3 years ago

Identify from the graph if there is correlation, and

Mathematics

2 answers:

svetoff [14.1K]3 years ago

5 0

Answer:

The answer is B) There is a correlation, and it is negative.

sleet_krkn [62]3 years ago

3 0

The answer is negative

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Find the perimeter of a square with side a. Are the perimeter of the square and the length of its side directly proportional qua

inna [77]

The perimeter of a square with side a = 7.2 cm is 28.8 cm. Yes there exists a direct proportional relationship between Side length and Perimeter of square

<h3>Solution:</h3>

Given that side of square "a" = 7.2 cm

We have to find the perimeter of square

The perimeter of square is given as:

Perimeter of square = 4a

Where "a" represents the length of side of square

Substituting the given value a = 7.2 cm in above formula, we get perimeter of square

Perimeter of square = 4(7.2) = 28.8 cm

Are the perimeter of the square and the length of its side directly proportional quantities?

$\begin{array}{l}{\text { perimeter of square }=4 a=4 \times \text { length of side }} \\\\ {\frac{\text { perimeter of square }}{\text { length of side }}=4}\end{array}$

The Perimeter is equal to a constant times the Side length, or the Perimeter divided by the Side length is equal to four. So this is definitely a proportional relationship between Side length and Perimeter.

Two values are said to be in direct proportion when an increase in one results in an increase in the other.

So when length of sides increases, perimeter also increases

Hence perimeter and length of side of square are directly propotional quantities

4 0

3 years ago

What is the measure of XYZ, given that yz and xy are tangent to ?

Marta_Voda [28]

Answer:

D) 53 Degrees.

Step-by-step explanation:

Things we need to establish beforehand: We know that Lines OZ and OX are equal because they are both radii of the circle. We can make an Iscoceles traingle by drawing a line between ZX. We know angle YZO and angle YXO is a right angle because YZ and XY are tangent to the circle. The Arc angle is the same angle as angle ZOX.

1) Find angles OZX and OXZ. these will be 26.5, because 180-127 is 53, which is the sum of the two angles. the two angles are the same, so divide 53 by 2.

2) Find Angles XZY and ZXY. We know that YZO is a right angle, and both XZY and OZX make up this right angle so XZY + OZX = 90. OZX is 26.5, so 90-26.5=XZY. XZY = ZXY, so both angles equal 63.5.

3) Now that we have two angles of triangle XYZ, we can find angle XYZ. 180-(XZY+ZXY)=XYZ, so (180-(63.5+63.5)=53. Angle XYZ=53.

6 0

3 years ago

Does the sides 14, 3, 9 make a triangle?

lakkis [162]

Answer: No

Step-by-step explanation: The way that you know is you put the #s from least to greatest 3,9,14 then add the 2 smallest #s and if it is greater than the biggest #it does make a triangle so it would be 12<14 and that is false .

3 0

2 years ago

Please help me solve this correct answer gets brainlist

julia-pushkina [17]

Answer:

hyp²= opp² + adj²

hyp²= 12² +4²

hyp²= 144+16

hyp²=160

hyp=√160

hyp= 4√10

8 0

3 years ago

Read 2 more answers

4/5 m, if m = 10 HURRY!!

Ymorist [56]

8
(4/5)* 10= 8
if you divide 10 by 5 then you have 2 and then multiply it with 4 and you have 8.
Hope this helps:)

6 0

3 years ago