We input simply the data to the calculator using the stat mode on the right x and y columns. The coefficient of lnear regression, r2 is equal to 0.67. The equation in the calculator resulted to y = 0.5 x + 3. The low r^2 means the relationship is not linear and the equation is not accurate to use.
Hey there! The answer is actually A. Choosing a grocery item based on a price per unit comparison.
I hope this helps you guys!
I have a screenshot attached as proof :)
Answer:
Step-by-step explanation:
<u>Given equation:</u>
<u>Factorize it in steps:</u>
- 3x² + 5x + 2 = 0
- 3x² + 3x + 2x + 2 = 0
- 3x(x + 1) + 2(x + 1) = 0
- (x + 1)(3x + 2) = 0
<u>The roots are:</u>
- x + 1 = 0 ⇒ x = - 1
- 3x + 2 = 0 ⇒ 3x = - 2 ⇒ x = - 2/3
Answer: A rhombus has order of rotational symmetry of 2
Step-by-step explanation:
We know that a geometric figure has rotational symmetry if it maps onto itself under rotation about an angle at its center.
The order of rotational symmetry is the number of times the geometric figure maps onto itself during a rotation of 360°.
[ At 180° and 360° it maps onto itself]
A rhombus maps onto itself two times during a rotation of 360°
Hence, A rhombus has order of rotational symmetry of 2.
Answer:
40%
Step-by-step explanation:
Total students = 30
No. of girls. = 12
Girls % = ?
Girls % = No. of girls/Total students * 100%
= 0.4 * 100
= 40%
