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Zarrin [17]
3 years ago
12

In a bookstore, 60 identical books occupy a length

Mathematics
1 answer:
n200080 [17]3 years ago
4 0

Answer:

i) 1.25m

ii) 32 books

Step-by-step explanation:

60 identical books occupies = length of 1.5m

(i) the length occupied by 50 such books on

a shelf,

If:

60 books = 1.5m

50 books = y m

60 × ym = 1.5 × 50

ym = 1.5 × 50/60

= 1.25 m

Therefore, 50 of such books occupies a length of 1.25m

(ii) the number of such books needed to completely

occupy a shelf that is 80 cm long.​

100 cm = 1m

80 cm = x m

Cross Multiply

xm = 80/100

= 0.8 m

If : 1.5 m = 60 books

0.8 m = y books

Cross Multiply

= 1.5m × y books = 60 books × 0.8m

y books = 60 books × 0.8m/1.5m

y books = 32 books

Therefore, 32 books occupies a shelf that is 80 cm or 0.8 m long

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laila [671]

1a) The domain is a set of all real numbers not equal to 5

1b) The domain is a set of all real numbers not equal to 4

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

Domain of a function is the set of all possible input values that make the function defined.

1a) We are given the function;

C(x) = -3²/(x - 5)

The domain will be a set of values that makes the denominator not equal to zero. Thus;

The domain is a set of all real numbers not equal to 5

1b) The function is; R(x) = 4x/(3x - 12)

The domain will be a set of values that makes the denominator not equal to zero. Thus;

The domain is a set of all real numbers not equal to 4

2a) Function is;

f(x) = (x + 8)/(2x - 1)

f(2) = (2 + 8)/(2(2) - 1)

f(2) = 10/3

f(0) = (0 + 8)/(2(0) - 1)

f(0) = -8

f(-1/2) = (-1/2 + 8)/(2(-1/2) - 1)

f(-1/2) = -15/4

2b) Function is;

r(t) = (t² + 8)/(t³ - 25t)

r(3) = (3² + 8)/(3³ - 25(3)) = -17/48

r(2) = (2² + 8)/(2³ - 25(2)) = -12/42 = -2/7

r(-1) = ((-1)² + 8)/((-1)³ - 25(-1))  = 9/24 = 3/8

Read more about Domain of function  at; brainly.com/question/10197594

#SPJ1

3 0
1 year ago
Please help I will mark brain!
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3 is the Anwser put number 3 in
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What is the first step in solving for w in the equation 3W + 5 = 14?
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Answer:

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