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Masja [62]
3 years ago
9

(a+2)(a-1) - (a+1)(a-2), if a = 2​

Mathematics
1 answer:
Artist 52 [7]3 years ago
8 0

Answer:

4

Step-by-step explanation:

(a+2)(a-1) - (a+1)(a-2)

put a=2

(2+2)(2-1) - (2+1)(2-2)

4*1 -3*0

4-0

4

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the height of mont blanc is 4810 m correct to the nearest 10 meters. what is its least possible height
SSSSS [86.1K]

Answer:

4800m

Step-by-step explanation:

"correct to the nearest 10 meters" means that the height can vary ± 10 meters.

4810 m ± 10 m = 4800 to 4820

4800 is the least possible height.

7 0
3 years ago
Please help meee! :< An author receives $0.60 for each hardcover book or paperback book that is sold. There were x hardcover
rusak2 [61]
D) 47,000

0.60 (<em>x</em>+38,000)= 51,000
(0.60<em>x</em>)+22,800= 51,000
51,000-22,800= 28,200
28,200÷0.60= 47,000
0.06 (47,000+38,000)= 51,000
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5 0
3 years ago
Answer plz it’s impirtanttttt
Vinvika [58]

Part a) In 35 minutes, 25 number of pages have been read.

Part b) There is positive association between time and the number of pages being read

Step-by-step explanation:

Part a) What is the meaning of the point (35,25)

35 is the value of x-axis and 25 is the value of y-axis

x-axis represent Time(minute) while y-axis represent Number of pages read

So, in 35 minutes, 25 number of pages have been read.

Part b) Is the association between time and number of pages positive or negative? state the association in terms of variables.

Association is positive if increasing one variable, other variable is also increasing.

Association is negative if increasing one variable, other variable is decreasing.

In the given graph, the association is positive. Increasing the time, the number of pages being read are also increasing.

if time is 20 minutes, number of pages read are 12.5. if time is 25 minutes then number of pages read are 17

So, there is positive association between time and the number of pages being read.

Keywords: Association between variables

Learn more about Association between variables at:

  • brainly.com/question/4599759
  • brainly.com/question/13068373

#learnwithBrainly

3 0
3 years ago
Will give brainliest! :)) need asap
Romashka-Z-Leto [24]

Answer:

D. -3 for every 1 to the right, in goes down 3.

E. 0, the graph could represent no change over time.

F.

assume the point on the graph is the origin, you can graph these

(2,-4)

(1,-2)

(0,0)

(-1,2)

(-2,4)

(-3,6)

Step-by-step explanation:

3 0
3 years ago
Students were surveyed about the time they wake up on school mornings. The results are shown in the table.
sergij07 [2.7K]
3+13+4=20 500/20=25 25•4= 100 so 100 should be the answer
7 0
2 years ago
Read 2 more answers
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