1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
garik1379 [7]
3 years ago
6

Bert has three times as much money as Ernie. If Ernie spends $6 on a new rubber ducky, then Bert will have five times as much mo

ney as Ernie. How much money does Bert have?
Mathematics
1 answer:
fomenos3 years ago
5 0

Answer:

Bert has $45.

Step-by-step explanation:

I have no real strategy, except for that I used guess and check. How did I do this? Well, since I am in 5th Grade, I don't know algebra very well, so I made an organized chart and checked all the numbers that had to be a multiple and  could be divided equally by 5, 3 and when a third of that number was subtracted by 6, it was a fifth of the orginal number. Thats how I got 45.

Checking this answer:

It is always important to check your answer after finishing the problem, so this is how I checked my answer:

1. 45 divided by 3 = 15

2. 15 - 6 = 9, and 9 is 1/5 of 45

Bert has $45.

You might be interested in
Which functions are the same as their inverse functions? please help!!!
Whitepunk [10]
Case a)
f(x)=[x-1]/[x+5]
step 1
f(x)=y
y=[x-1]/[x+5]
step 2
exchange x for y and y for x
y=[x-1]/[x+5]------> x=[y-1]/[y+5]----> x*[y+5]=[y-1]----> xy+5x=y-1
step 3
clear the variable y
xy+5x=y-1-----> y-xy=5x+1----> y*[1-x]=[5x+1]----> y=[5x+1]/[1-x]
step 4
f(x)-1= [5x+1]/[1-x]
the function and the inverse function are not the same

case b)
g(x)=[x-2]/[x-1]
step 1
g(x)=y
y=[x-2]/[x-1]
step 2
exchange x for y and y for x
y=[x-2]/[x-1]------> x=[y-2]/[y-1]----> x*[y-1]=[y-2]----> xy-x=y-2
step 3 
clear the variable y
xy-x=y-2-----> xy-y=-2+x----> y*[x-1]=[x-2]----> y=[x-2]/[x-1]
step 4
g(x)-1= [x-2]/[x-1]
the function and the inverse function are  the same

case c)
h(x)=[x+3]/[x-2]
step 1
h(x)=y
y=[x+3]/[x-2]
step 2
exchange x for y and y for x
y=[x+3]/[x-2]------> x=[y+3]/[y-2]----> x*[y-2]=[y+3]----> xy-2x=y+3
step 3 
clear the variable y
xy-2x=y+3-----> xy-y=3+2x----> y*[x-1]=[2x+3]----> y=[2x+3]/[x-1]
step 4
h(x)-1= [2x+3]/[x-1]
the function and the inverse function are not the same

case d)
k(x)=[x+1]/[x-1]
step 1
k(x)=y
y=[x+1]/[x-1]
step 2
exchange x for y and y for x
y=[x+1]/[x-1]------> x=[y+1]/[y-1]---> x*[y-1]=[y+1]----> xy-x=y+1
step 3 
clear the variable y
xy-x=y+1-----> xy-y=x+1----> y*[x-1]=[x+1]----> y=[x+1]/[x-1]
step 4
k(x)-1= [x+1]/[x-1]
the function and the inverse function are  the same

7 0
3 years ago
Find slope and y intercept y=10x+5
saul85 [17]

The slope is the coefficient of x, which is 10, and the y-intercept is the constant, which is 5.


5 0
3 years ago
Read 2 more answers
Math 201 Statistics week 6 discussion board?
rjkz [21]
Answer: ??? What

Explanation: what’s the question??
7 0
2 years ago
A pole that is 2.7 m tall casts a shadow that is 1.76 m long. At the same time, a nearby building casts a shadow that is 44.25 m
natali 33 [55]

Answer:

81

Step-by-step explanation:

9x9

2x2

5 0
3 years ago
Read 2 more answers
Seema covered 3 4/13(three four by thirteen)km by bus,2 5/13(Two five by thirteen)km by metro and 1 2/13(One two by thirteen)km
Ad libitum [116K]

Answer: 89/13 km

Step-by-step explanation:

3 4/13 + 2 5/13 + 1 2/13

= 43/13 + 31/13 + 15/13

= 89/13 km

6 0
2 years ago
Other questions:
  • Please help FAST!!<br><br> Which equation represents the graph of the linear function?
    12·1 answer
  • 1/2(4x-2)-2/3(6x+9&lt;4
    8·1 answer
  • Natasha is planning a school celebration and wants to have live music and food for everyone who attends. She has found a band th
    15·2 answers
  • If a parallelogram is reduced to have dimensions that are half as long, then the perimeter is one fourth the original length. Tr
    15·2 answers
  • Determine the prime factorization of 88.
    10·2 answers
  • Is lb bigger or smaller than oz
    14·2 answers
  • Amazing gadget corporation has determined a quadratic relationship between its selling price for its newest tablet and the compa
    10·2 answers
  • Cuántas aristas tiene un cilindro​
    12·1 answer
  • 8) The graphical representation of a linear polynomial is
    9·1 answer
  • If there are 574 cals in 160 grams,<br> how many are there in 100 grams
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!