4 to 6 please give me the answer
Answers
Answer:
4. Measurements require tools and provide scientists with a quantity. A quantity describes how much of something there is or how many there are. A good example of measurement is using a ruler to find the length of an object. ... In the SI system, each unit of measure has a base unit.
5. In ancient times, the body ruled when it came to measuring. The length of a foot, the width of a finger, and the distance of a step were all accepted measurements. Inch: At first an inch was the width of a man's thumb. ... Span: A span was the length of the hand stretched out, about 9 inches.
6. A body is said to be at rest if its position does not change with respect to its surroundings. ... Whereas, when the position of a body changes with respect to its surroundings, it is said to be in motion. The state of rest and motion of the body is relative to each other. Rest and motion are relative terms. In simple terms, an object that changes its position is said to be in motion while the opposite action causes an object to be at rest
please please mark as brainliest it was too difficult to type pls
Answer:
Solution of a equation satisfies the equation.
Given equation 2x+3y=6...(1)
Let's take option A, x=3,y=0
LHS =2×3+3×0=6= RHS
LHS = RHS
Hence, (3,0) is a solution of eq (1)
Option B, x=0,y=2
LHS =2×0+3×2=6= RHS
LHS = RHS
Hence, (0,2) is a solution of eq (1)
Option C, x=−3,y=4
LHS =2(−3)+3(4)=6= RHS
LHS = RHS
Hence, (−3,4) is a solution of eq (1)
Option D, x=1,y=1
LHS =2×1+3×1=5
= RHS
LHS
= RHS
Hence, (1,1) is not a solution of eq (1)
Hence option D is answer
Explanation: