3 years ago

Is it possible to have an expression that uses brackets without using any parentheses???Explain.help plz

Mathematics

1 answer:

OverLord2011 [107]3 years ago

6 0

Yes it is possible if it doesn't have parentheses

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Find percentage: 3/4% of 9.6

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3/4% = 75%

9.6 x .75 = 7.2

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The vertices of quadrilateral EFGH are listed below.

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The ages of two brothers are in the ratio two to three, but in eight years, the ratio of their ages will be three to four. What

Darina [25.2K]

X = older brother
y = younger brother

Equation 1: x/y = 2/3 ⇒ x = 2y/3
Equation 2: x + 8/y + 8 = 3/4

$( \frac{2y}{3} + 8) / y +8 = \frac{3}{4}$
$(2y + 24)/3 = y + 8 = \frac{3}{4}$
$2y + 24 = 3 (y + 8) = \frac{3}{4}$
$2y + 24 = 3y + 24 = \frac{3}{4}$
$4 (2y + 24) = 3 (3y + 24)$
$8y + 96 = 9y + 72$
$y = 24$

The age of the older brother is 24.

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$x = \frac{48}{3}$
$x = 16$

The age of the youngest brother is 16.

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3 years ago

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The ratio of boys and teacher in a school is 2:3 the ratio of teachers to the girls is 4:5.Find the ratio of all the three in a

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Answer:

Step-by-step explanation:

2:3 boy:teacher 8:12

4:5 teacher:girl 12:15

8:12:15 boy:teacher:girl

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2 years ago