Work out 25% of 30 meters?

Mathematics

2 answers:

GaryK [48]3 years ago

8 0

25% of something is 1/4, 1/4 of 30 is 7.5, since half of 30 is 15 and half of 15 is 7.5, 25% of 30 meters is 7.5 meters

Furkat [3]3 years ago

7 0

25\100 x 30=7.5
answer=7.5

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There are 162 magazines and books in a library. There are 54 more books

Strike441 [17]

Answer:

108 books.

Step-by-step explanation:

Let the number of magazines = m

Let the number of books = b

Given the following data;

Total number of m & b = 162

Translating the word problem into an algebraic equation, we have;

$b = m + 54$ ......equation 1

$m + b = 162$ ......equation 2

Substituting equation "1" into equation "2" we have;

$m + m + 54 = 162$

$2m + 54 = 162$

$2m = 162 - 54$

$2m = 108$

$m = \frac {108}{2}$

m = 54

Now to find the number of books;

$b = m + 54$

Substituting the value of "m" into the equation, we have;

$b = 54 + 54$

b = 108

Therefore, the total number of books in the library is 108 books.

7 0

2 years ago

In rectangle ABCD, the angle bisector of ∠A intersects side DC at point M and the angle bisector of ∠C intersects side AB at poi

Verizon [17]

Perimeter of quadrilateral ANCM = AN+NC+CM+MA

CM=AM = x in
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In other words, all sides of the new quadrilateral are equal.

Perimeter (P) = 4x in

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