26-10-2015
Mathematics

contestada

3/9=21/k proportion

Respuesta :

26-10-2015

[tex]\frac{3}{9} = \frac{21}{k}\\\\\frac{1}{3}= \frac{21}{k}\\\\\sf Cross~multiply\\\\1(k) = 21(3)\\\\k = 21(3)\\\\\boxed{k = 63}[/tex]

Answer Link

Otras preguntas

i need help with that picture,

What has the ability for something to burn.

Which statement describes competition in an environment? a. A stream supplies an abundance of water in a forest. b. Sunlight shines only three months out of the

CR#1 Find the slope of the line through each pair of points. (-2, 12), (-3, 19) ?

Describe a problem caused by losses in biodiversity.

Find the length of the hypotenuse of the triangle. 6.1 9 5.6 6.4 help now pls

Lynn can type 60 words per minute. If she types for 30 minutes, how many words does she type in all?

t 6.2.5 Quiz: Classification of Living Things The diagram shows the complete classification for the red fox. The names for some of the taxa are missing. ? Eukar

for number 25, please pick 1,2,3 or 4 as the answer. Thank you!

How much oxygen is produced (the units are milliliters of oxygen per hour) when light intensity is 0%. How do you explain these results?