Suzanne has 15 books and will buy 3 more each month. Jack has 57 books and will sell 4 books each month. After how many months will they have the same number of books? How many will that be?

Solved

Show answers

Ответ:

mia2286

14.01.2021

Mathematics

y=1

Step-by-step explanation:

The correct table that shows the direct variation is:

5 6 y 9

15 18 3 27

Since this is a direct variation, there is a proportional relation.

Therefore: $\frac{27-15}{9-5}=\frac{3-15}{y-5}$

This implies that:

$\frac{12}{4}=\frac{-12}{y-5}$

$3=\frac{-12}{y-5}$

$y-5=\frac{-12}{3}$

y-5=-4

y=5-4=1

Therefore the value of y is 1

0,0(0 оценок)

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.

Ask your question

More tips

S Sport Playing Bowling: Rules and Advice for Novices...
C Computers and Internet How to Properly Repartition a Hard Drive?...
A Auto and Moto What Is the Cost of Customs Clearance for a Car in Russia?...
L Leisure and Entertainment Should You Buy a Ceramic Knife?...
C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
G Goods and services How to sew a ribbon: Tips for beginners...
F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
C Computers and Internet Which Phone is Best for Internet Surfing?...
F Food and Cooking Everything You Need to Know About Pasta...
C Computers and Internet How to Choose a Monitor?...

Answers on questions: Mathematics

M Mathematics Luke subtracted 128° from 180° and found that the measurement of ∠str is 52°. how can luke use this information to find the measurement of ∠rst? what is the measurement...
M Mathematics The gardener counted the numbers blooms on 10 flower bushes and then arrange the numbers from smallest to largest the numbers of moons on each bush 4,4,6,6,7,8,8,8,9...
M Mathematics 1/4,1/12,1/36,1/108 describe the pattern for the sequence. then find the next three terms...
M Mathematics Find the diameter of a circle whose equation is x2+(y−2)2=100x2+(y−2)2=100. 400 20 100 10...
M Mathematics At a certain time of day, the angle of elevation of the sun is 40°. to the nearest foot,find the height of a tree whose shadow is 35 feet long....
M Mathematics based on exponentials and logarithms solve ln (5x + 1) = 3. round to the nearest thousandth 21.086 4.217 19.886 3.817the answer is d. 3.817...
M Mathematics 8cm=2.5mm what is the answer to this question...
M Mathematics Which answer describes the number and type of solutions for the given equation? use the discriminant. x^2+8x+10=0 a. no real solutions b. one real solutions c. two...
M Mathematics Estimate square root of each of the following 6241 1849 2209...
M Mathematics There are three parallel chords in a circle, none of which is the diameter. the top chord has a length of 14, the middle chord a length of √x, and the bottom chord...

Ask an AI advisor a question

I want advice