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diamong [38]
3 years ago
10

Dave has 15$ to spend on an 8$ books and two birthday cards (c) for his friends . how much can he spend on each card if he busys

the same card for each other ?
Mathematics
1 answer:
Veronika [31]3 years ago
8 0
15-8 is how much you have left then divide that by 2 and thats ur answer.
$15 - $8 = $7 / 2 = $3.50
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A floor is made up of 20 triangular tiles, each with sides 40 cm, 24 cm and 32 cm. Find the cost of polishing the floor at the r
pochemuha

Answer:

15360\,\,rupees

Step-by-step explanation:

Let sides of the triangle be a,b,c

a=40\,,\,b=24\,,\,c=32

Semi-perimeter (s) = \frac{a+b+c}{2}

=\frac{40+24+32}{2}\\ =\frac{96}{2}\\=48

Area of one tile =\sqrt{s(s-a)(s-b)(s-c)}

=\sqrt{48(48-40)(48-24)(48-32)}\\ =\sqrt{48(8)(24)(16)}\\ =\sqrt{147456} \\=384\,\,cm^2

So,

Area of 20 tiles =20(384)=7680\,\,cm^2

Cost of polishing the floor at the rate of 2 rupees per sq.cm = 7680(2)=15360\,\,rupees

7 0
3 years ago
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Step-by-step explanation:

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7 0
3 years ago
Find the value of x for which m||n <br> A:38 B:62 C:103 D:150
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
In a housing estate the direct proportion of flats to houses is 2:5. If there are 80 flats, how many houses are there?
Kobotan [32]

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4 0
3 years ago
Zoe and hannah share tips in the ratio 3:7 last week zoe recieved £24 how much did hannah recive last week
torisob [31]

Answer:

56

Step-by-step explanation:

Zoe and Hannah shared tips in the ratio

3:7

Last week Zoe received $24

Hence the amount received by Hannah can be calculated as follows

3/7= 24/x

168= 3x

x= 168/3

= 56

Hence Hannah received €56

8 0
3 years ago
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