Question

PLEASE HELPPPPPP MEEE, JUSTIFY YOUR ANSWER!​

Answer 1

Answer:

Step-by-step explanation:

d.12/28*21/18=?

252/504=1/2

true

e.(15+6)/(15+3)=?

add them up

21/18

simplify:

7/6 not 6/3

false

f.false,20/30 and 2/3 are the same as the ratio between the numerator and denominator stayed the same. the same number cannot be greater than itself making the statement false

Answer 2

Answer:

d. True

e. False

f. False

Step-by-step explanation:

d.

$\dfrac{12}{28} \times \dfrac{21}{18} = \dfrac{1}{2}$

$\dfrac{12 \times 21}{28 \times 18} = \dfrac{1}{2}$

$\dfrac{2 \times 6 \times 3 \times 7}{2 \times 2 \times 7 \times 3 \times 6} = \dfrac{1}{2}$

$\dfrac{2}{2} \times \dfrac{6}{6} \times \dfrac{3}{3} \times \dfrac{7}{7} \times \dfrac{1}{2} = \dfrac{1}{2}$

$1 \times 1 \times 1 \times 1 \times \dfrac{1}{2} = \dfrac{1}{2}$

$\dfrac{1}{2} = \dfrac{1}{2}$

True

e.

$\dfrac{15 + 6}{15 + 3} = \dfrac{6}{3} = 2$

$\dfrac{21}{18} = \dfrac{6}{3} = 2$

$\dfrac{7}{6} = \dfrac{6}{3} = 2$

False

f.

False. Since the3 numerator and denominator of 2/3 are both multiplied by the same number, 10, to get 20/30, then 20/30 and 2/3 are equivalent fractions and are equal.