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Helga [31]
2 years ago
10

Four friends are going to share the responsibility of babysitting 3 children for 7 hours. How much time will each friend spend b

abysitting if they take turns and spend equal amounts of time?
Mathematics
1 answer:
Effectus [21]2 years ago
8 0

Answer:

1.75 hours :)

Step-by-step explanation:

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Write the expanded exponential form of the number 1287.5478​
ruslelena [56]

Answer:

1,287.5478 =

1 × 103

+ 2 × 102

+ 8 × 101

+ 7 × 100

+ 5 × 10-1

+ 4 × 10-2

+ 7 × 10-3

+ 8 × 10-4

4 0
2 years ago
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Solve b+12≤26. Graph the solution
Vladimir79 [104]

Answer:

The answer is

b≤14

So you make a filled in circle at 14, make the point for left from there.

6 0
2 years ago
Rebecca Wilson was the top scorer in a​ women's professional basketball league for the 2006 regular​ season, with a total of 846
RUDIKE [14]

Answer:

Number of two point goals = 169

Number of three point goals = 123

Number of free throws = 139

Step-by-step explanation:

Let the number of two point goals = x

Let the number of three point goals = y

Let the number of free throws = z

As per the given statements:

x = 2y-77 ...... (1)

z = x-30 ...... (2)

Using equation (1):

z = 2y-107 ...... (3)

Total number of points from two point goals  = 2x

Total number of points from three point goals  = 3y

Total number of points from free throws  = z

2x+3y+z=846

using (1) and (3):

2(2y-77)+3y+2y-107=846\\\Rightarrow 4y-154+5y-107=846\\\Rightarrow 9y-261=846\\\Rightarrow 9y=846+261\\\Rightarrow 9y=1107\\\Rightarrow y =123

By (1):

x = 2\times 123-77 =169

By (3):

z =2\times 123-107 = 139

So, answers are:

Number of two point goals = 169

Number of three point goals = 123

Number of free throws = 139

3 0
2 years ago
A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 40 million years. How many year
Mandarinka [93]

Answer:

240

Step-by-step explanation:

Hope its right, sorry if it isn't.

3 0
2 years ago
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Find the value of each variable
mylen [45]

Answer:

20. 4n+5+8n-5=180(linear pair)

12n=180

n=15

21. 9x-6=8.5x+2(can be seen from image)

9x-8.5x=2+6

0.5x=8

x=8/0.5

x=80/5

x=16

22. 4z+3z+6=90°(Complementary)

7z+6=90°

7z=84°

z=12°

3 0
3 years ago
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