j2aV0almclemazivlu j2aV0almclemazivlu

23-05-2016
Mathematics

contestada

One positive number exceeds 4 times another positive number by 3. The product of the two numbers is 351. What are the two numbers?
A) 6 and 9
B) 6 and 24
C) 9 and 39
D) 25 and 29

Respuesta :

28-05-2016

Hello,
Answer C 9 and 39.

Let a the first and b the second
a=4b+3
a*b=351

==>b*(4b+3)=351
==>4b²+3b-351=0
Δ=9+4*4*351=5625=75²
==>b=(-3-75)/8 =-9.75 ==>a=4*(-9.75)+3=-36 (excluded) a>0
or b=(-3+75)/8=9 and a=4*9+3=39

Answer Link

Otras preguntas

how to sovle a One-Variable Equations

If the divisor is 40 what is the least 3 digit dividend that would give the remainder of 4

t's time to write your first letter in French! Please include the following items in your letter.Choose a French-speaking country you would like to visit.Write

What do anaerobic organisms have in common with photosynthetic organisms? A.) They both appeared on Earth at about the same time. B.) They both can only exist

Caitlin had $402 in her bank account. She withdrew $15 each week to pay for a swimming lesson. She now has $237. a. Write an equation that can be used to fi

The Tang Dynasty's reign was part of the "Chinese Golden Age." What were their greatest artistic achievements during this time period?

Hugh has to earn at least $400 to meet his fundraising goal. He has only 100 books that he plans to sell at $8 each. Which inequality shows the number of books

the midpoint of cd is -9,-10, endpoint c has coordinates of -1,9 what is the endpoint of d?

what is the difference between conduction and convection?

How is the government in the United States today different from the government in ancient Athens