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tia_tia [17]
3 years ago
11

Please HELP!! will mark brainiest

Mathematics
1 answer:
Schach [20]3 years ago
5 0

Answer:

B) -0.98

Step-by-step explanation:

Correlation coefficient is usually denoted with numbers ranging from 1 to -1. Automatically, this eliminates option C) as our possible answer, since -1.43 is outside the range.

The trend shown in the scatter plot describes a negative relationship because, as the values in the Y-axis decreases, the values at the X-axis increases. The possible correlation coefficient we are likely to get is one that is negative. This eliminates option A and option and option D is our possible correlation coefficient for the scatter plot given since both values are positive.

Option B) -0.98, best represents the correlation coefficient of the given scatter plot. Since the points on the scatter plot seem closely aligned on a straight line, a negative value if -0.98 is mostly the possible one to get.

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Which of these numbers are composite<br><br> 51, 53, 57, 59
Oduvanchick [21]

Answer:

57

Step-by-step explanation:

57 is a composite number

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3 years ago
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2 years ago
Which card has the solution x = 23?
morpeh [17]

I need a photo but ill give you some information this will be with exponents.

<em>Write down the problem. Here it is:</em>

<em>2^2(x+3) + 9 - 5 = 32</em>

<em>Resolve the exponent. Remember the order of operations: PEMDAS, which stands for Parentheses, Exponents, Multiplication/Division, and Addition/Subtraction. You can't resolve the parentheses first because x is in the parentheses, so you should start with the exponent, </em><em>2^2.2^2 = 4</em>

<em>4(x+3) + 9 - 5 = 32</em>

<em>Do the multiplication. Just distribute the</em><em> 4 into (x +3)</em><em>. Here's how:</em>

<em>4x + 12 + 9 - 5 = 32</em>

<em>Do the addition and subtraction. Just add or subtract the remaining numbers. Here's how:</em>

<em>4x+21-5 = 32</em>

<em>4x+16 = 32</em>

<em>4x + 16 - 16 = 32 - 16</em>

<em>4x = 16</em>

<em>Isolate the variable. To do this, just divide both sides of the equation by 4 to find x. </em><em>4x/4 = x </em><em>and </em><em>16/4 = 4</em><em>, so </em><em>x = 4.</em>

<em>4x/4 = 16/4</em>

<em>x = 4</em>

<em>Check your work. Just plug </em><em>x = 4</em><em> back into the original equation to make sure that it checks out. Here's how:</em>

<em>2^2(x+3)+ 9 - 5 = 32</em>

<em>2^2(4+3)+ 9 - 5 = 32</em>

<em>2^2(7) + 9 - 5 = 32</em>

<em>4(7) + 9 - 5 = 32</em>

<em>28 + 9 - 5 = 32</em>

<em>37 - 5 = 32</em>

<em>32 = 32</em>

<em><u>Credit to wikiHow.com</u></em>

7 0
3 years ago
Suppose that the area between a pair of concentric circles is 49pi. Find the length of a chord in the larger circle that is tang
Lapatulllka [165]

Answer:

14 units

Step-by-step explanation:

We are given that the area between two concentric circles is 49\pi

We have to find the length of chord in the larger circle that is tangent to the smaller circle.

Let r_1,r_2 be the radius of two circles.

r_1 be the radius of small circle and r_2 be the radius of large circle

We know that area pf circle=\pi r^2

Area of large circle =\pi r^2_2

Area of small circle =\pi r^2_1

Area between two circles =49\pi

Area of large circle -Area of small circle=49\pi

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By pythagorus theorem

AD^2=OA^2-OD^2

AD^2=r^2_2-r^2_1

AD=49

AD=\sqrt{49}=7

Length of chord=2\cdot AD

Hence, the length of chord of the larger circle =2\cdot7=14 units

7 0
3 years ago
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mr Goodwill [35]

Step 1: Find the circumference of the circle

C = 2pi * r

C = 2pi * 6

C = 12pi cm

Step 2: Multiply by the central angle over the whole

---We do this because we are only finding a part of the whole circumference. That part is determined by the central angle.

12pi x 30/360

12pi x 1/12

ARC = 1pi cm

Hope this helps!

4 0
3 years ago
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