Answer:
The number is 2
Step-by-step explanation:
Twice a number (z) = 2*z = 2z
Twice a number (z) added to 21 = 2z + 21
9 times the number added to 7 = 9z + 7
9z + 7 = 2z + 21
Subtract 2z form both sides
9z - 2z + 7 = 21
7z + 7 = 21
Subtract 7 from both sides
7z = 21 - 7
7z = 14
Divide both sides by 7
z = 14/7
z = 2
Full turn = 360°
Number of 90° = 360 ÷ 90 = 4
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Answer: It takes 4 90° to make a full turn.
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It is a nonlinear I hope this helps
Answer: For a translation, you need a distance and a direction.
For a rotation, you need a point that is the center of the rotation and the degree (and sometimes direction) of rotation.
For reflection you need the axis or a defined line that the triangle is reflected across.
Step-by-step explanation:
Point A=-1.3
Point B= 1.3
These 2 points are reciprocals, which means that their sum is Zero. So basically they are exact opposites.
