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Le son 9: er Unit Test
Physical Science - 321101CH Unit 1: Matter
Assessment
14. The density of solid aluminum is 2.70 g/cm². If a lg piece of aluminum is dropped in a cup of (1 po
water, what will happen to the aluminum? (The density of water is 1.00 g/cm')
O It will sink to the bottom.
O It will float to the top.
It will hover in the middle.
O It will move up and down.
15. Which is a characteristic of atoms? (1 point)

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation:

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

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