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mixas84 [53]
3 years ago
15

A woman walks a constant speed of 4.5km per hour. How long will it take her to walk 10 km? Use the formula d=st. write the answe

r in hours and mintues rounded to the nearest minute.
Mathematics
2 answers:
ryzh [129]3 years ago
4 0

d =st

distance = speed * time

10 = 4.5 * t

divide each side by 4.5

10/4.5 = t

100/45 = t  (can't have a decimal in a fraction so I multiply by 10/10)

divide top and bottom by 5

20/9

2 and 2/9 hours

 to get minutes multiply 2/9 by 60

2/9 * 60

120/9

13 3/9

13 1/3 minutes

2 hours 13 1/3 minutes

to the nearest minutes

2 hours 13 minutes

Serjik [45]3 years ago
3 0

Answer:

You must evaluate the function f first.

Division by 0 is undefined.

The composition cannot be evaluated.

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alukav5142 [94]

Answer:

form 1 question????????

3 0
2 years ago
A) What is the domain and range of the graph? (Use the equations editor or explain)
riadik2000 [5.3K]

The domain: -5 < x ≤ 1 and the range: -3 ≤ y ≤ 1 is a function. b)

No, the vertical line crosses the graph in more than one place, therefore, the relation shown is a function.

<h3>What is the domain and range of the function?</h3>

The domain of a function is defined as the set of all the possible input values that are valid for the given function.

The range of a function is defined as the set of all the possible output values that are valid for the given function.

The domain of a relation is the set of values of the independent variable for a defined function.

The domain is the horizontal extent of the graph.

The range of a relation is the set of values of the dependent variable for a defined function.

The range is the vertical extent of the graph.

The vertical line can intersect the graph in at most one place.

a)

This graph extends from x > -5 to x = 1.

The domain

 -5 < x ≤ 1   ------   (-5, 1] in interval notation

This graph extends from y = -3 to y = 1.

The left side of the graph does not include the point (-5, 1), but the right side includes the point (1, 1).

y = 1 is one of the output values of the relation.

The range

 -3 ≤ y ≤ 1 . . . . . . . . [-3, 1] in interval notation

b)

No, the vertical line crosses the graph in more than one place, therefore, the relation shown is a function.

Learn more about the domain and range of the function:

brainly.com/question/2264373

#SPJ1

8 0
2 years ago
Ahhh help please find the perimeter
spin [16.1K]

Answer:

12x^{2} + 6y

Step-by-step explanation:

3 0
2 years ago
How many times does 20 go into 74??
Dima020 [189]
About three times. Just divide 74 by 20 which is 3 but exactly it is 3.7. 
                        hoped it helped
7 0
2 years ago
Read 2 more answers
a group of students surveyed chose baseballand soccer as there favorite sport in th ratio 3:8 if 132 students were surveyed , fi
makkiz [27]

132/11= 12

12 times 8 = 96

96 students chose soccer.

8 0
3 years ago
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