barbiana barbiana

03-07-2019
Mathematics

contestada

assume y varies directly as x if y = 7 when x=3 find x when y=21

Respuesta :

eddiezarate12 eddiezarate12

03-07-2019

Answer:

x=9 when y=21

Step-by-step explanation:

I used cross multiplication

7:3=21:x

7x=63

x=9

Answer Link

Otras preguntas

Do you think antiseptic creams and lotions play an important part in our dayto day life?

Anne Bradstreet that characterizes her as a woman, a Puritan, and a poet. Consider discussing how she overcame hardship and cultural bias to become the first pu

Find the fraction and the ratio of No. Of prime numbers to the numbers up to 50

write a great paragraph on taj mahal

A pure market economy is sometimes called?

16. A rectangle of length (4x - 1) cm and breath 2xcm has an area of 10cm2. Finda Value of xb. Its length and breathc. Perimeter

According to Jeffrey Gray, a British neuropsychologist, the behavioral inhibition system (BIS) is activated by danger signals ________, resulting in the experie

data related to geophysical characteristics are called

Which statement about progressive taxes is true? A. The rate increases as income increases. B. The rate remains the same, even if income increases or decreases.

Find the number of moles and the number of molecules in one cubic meter of air at 1 atmospheric pressure and 0C.