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gtnhenbr [62]
3 years ago
10

alison surveyed a group of students at her school. she found that 155 students owned a cell phone, and 76 of those students owne

d a laptop as well. she also found that there were 35 students that do not own a cell phone, but own a laptop. seventeen students did not own either device. complete this two-way table to summarize the data.

Mathematics
1 answer:
emmasim [6.3K]3 years ago
7 0

Answer: laptop: 111

no laptop: 79 , 96

total: 52, 207

Step-by-step explanation: the comma’s i put in my answer stands for each blank but you were basically suppose to add and subtract in that question which is self explanatory

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F(2/9) if f(x)=3x+1/3
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Answer:

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Step-by-step explanation:

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600 x 800...................................
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First do 6×8=48, then just add the 0's to the end to get 480,000
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Help plz!!!
lara [203]

Answer with explanation:

→→→Function 1

f(x)= - x²+ 8 x -15

Differentiating once , to obtain Maximum or minimum of the function

f'(x)= - 2 x + 8

Put,f'(x)=0

-2 x+ 8=0

2 x=8

Dividing both sides by , 2, we get

x=4

Double differentiating the function

f"(x)= -2, which is negative.

Showing that function attains maximum at ,x=4.

Now,f(4)=-4²+ 8× 4-15

           = -16 +32 -15

          = -31 +32

          =1

→→→Function 2:

f(x) = −x² + 2 x − 3

Differentiating once , to obtain Maximum or minimum of the function

f'(x)= -2 x +2

Put,f'(x)=0

-2 x +2=0

2 x=2

Dividing both sides by , 2, we get

x=1

Double differentiating the function,gives

f"(x)= -2 ,which is negative.

Showing that function attains maximum at ,x=1.

f(1)= -1²+2 ×1 -3

   = -1 +2 -3

  = -4 +2

 = -2

⇒⇒⇒Function 1  has the larger maximum.

6 0
3 years ago
A. A farmer irrigates her fields with 120,000 cubic yards of water. She has a 1,000-acre farm. How
horsena [70]

Answer:

120 cc yards of water

Step-by-step explanation:

A farmer has 1,000-acre farm. And she irrigates her fields with 120,000 cubic yards of water. We are asked to find how many cubic feet of water does she apply per acre?

1000 acre is irrigated by = 120000 cc yard of water

Hence 1 Acre is irrigated by

= \frac{120000}{1000} cc yards of water

Hence 1 Acre is irrigated by 120 cc yards of water .

8 0
3 years ago
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