Which technique is most appropriate to solve this equation?

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

4 0

quadratic formula

Step-by-step explanation:

x(x-9)+4(x-9)

x²-9x+4x-36

x²-5x-36

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2 4/5 x 1/3 = 1 1/4 x 1/5 =

g100num [7]

Answer:

$\frac{14}{15}$
$\frac{1}{4}$

Step-by-step explanation:

Given the following equations:

$2\frac{4}{5} \times\frac{1}{3}$
$1\frac{1}{4} \times\frac{1}{5}$

In order to solve the following equations, we convert the mixed numbers into improper fractions and then solve by multiplying the numerators and the denominators by each other.

$2\frac{4}{5} \times\frac{1}{3}$
$2\frac{4}{5} =5\times2=10+4=\frac{14}{5}$
$\frac{14}{5} \times\frac{1}{3}$
$14\times1=14$
$5\times3=15$
$=\frac{14}{15}$

$1\frac{1}{4} \times\frac{1}{5}$
$1\frac{1}{4} =1\times4=4+1=\frac{5}{4}$
$\frac{5}{4} \times\frac{1}{5}$
$5\times1=5$
$4\times5=20$
$\frac{5}{20} \div5=\frac{1}{4}$
$=\frac{1}{4}$

Hope this helps.