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
Anit [1.1K]
3 years ago
10

Alex and Freddy collect stamps. The number of stamps in Alex’s collection is in ratio 3:5 to the number of stamps in Freddy’s co

llection. If Freddy gives Alex 10 stamps, the ratio will change to 7:9. How many stamps are in both collections together?
Mathematics
1 answer:
Tems11 [23]3 years ago
4 0
Suppose Alex has 3x stamps, Freddy has 5x stamps. After Freddy gives Alex 10 stamps, Alex has 3x+10 while Freddy has 5x-10
the new ratio is 7 to 9, so we have the equation: (3x+10)/(5x-10)=7/9
9(3x+10)=7(5x-10)
27x+90=35x-70
160=8x
x=20
So Alex has 3*20=60 stamps while Freddy has 5*20=100. Together they have 160
You might be interested in
What is 10 - 4 and 2/3?
Ymorist [56]
10 - 4 2/3

First, we convert mixed fraction into improper fraction.

4 2/3 = ((4*3)+2)/3 = 14/3

In subtracting fractions:
1) Both must have the same denominator.
10 is 10/1 and 14/3 have different denominators. 

2) Once they have the same denominator, then subtraction may be performed.

10 - 14/3 = 10 * 3/3 - 14/3 = 30/3 - 14/3 = 16/3

3) 16/3 must be simplified.

16/3 = 5 1/3

10 - 4 2/3 = 5 1/3
8 0
3 years ago
Real estate taxes for commercial property in your town are $11 per $1,000 assessed value. You plan on buying a
vlabodo [156]

Answer:

D

Step-by-step explanation:

4 0
3 years ago
2. You have a set of three similar gift boxes. Each box is a rectangular prism. The large box has 15-cm base edges. The medium b
MAXImum [283]

Answer:

The volume of the medium box is 8 times the volume of the small box

The volume of the large box is 3.375 times the volume of the medium box

The volume of the large box is 27 times the volume of the small box

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

so

In this problem

1) The scale factor of the small box to the medium box  is equal to

\frac{10}{5} =2

The scale factor elevated to the cube is equal to

2^{3}=8

therefore

The volume of the medium box is 8 times the volume of the small box

2) The scale factor of the medium box to the large box  is equal to

\frac{15}{10} =1.5

The scale factor elevated to the cube is equal to

1.5^{3}=3.375

therefore

The volume of the large box is 3.375 times the volume of the medium box

3) The scale factor of the small box to the large box  is equal to

\frac{15}{5} =3

The scale factor elevated to the cube is equal to

3^{3}=27

therefore

The volume of the large box is 27 times the volume of the small box

7 0
3 years ago
HELP ME PLEASEEEE I NEED HELO
neonofarm [45]
The area of the shaded reason would be 41 because without the piece that is removed the area of the WHOLE triangle would be 49. The area of the tiny piece that was taken out would be 8 . 49 - 8 (the unshaded region) = 41 as the total area
8 0
4 years ago
Find the circumference and the area of a circle with diameter 2m . Use the value 3.14 for π , and do not round your answers. Be
MatroZZZ [7]
The circumference is 2PiR. The area is PiR^2
Circumference : 1 x 2 x 3.14.
The circumference is 6.28m.
Area: 1 x 1 x 3.14
The area is 3.14m.
3 0
4 years ago
Other questions:
  • PLEASE HELP ME I DON'T UNDERSTAND SOMEONE PLEASE!!! Danielle can spend no more than $75 on clothes. She wants a pair of shoes fo
    14·1 answer
  • The hartford insurance company has hired you to poll a sample of adults about their car purchases. what is wrong with using tele
    14·1 answer
  • To write a polynomial in standard form, write the _____ of the terms in descending order.
    10·1 answer
  • Find the value of each measure.
    12·2 answers
  • Which equation represents the graph?
    11·1 answer
  • Help plz giving out brianlest and 67 points please help
    7·1 answer
  • At the bowling alley, there are 25 people bowling. There is a 60% increase in bowlers the next night. How many people are bowlin
    6·2 answers
  • The first picture is the graph (already answered) and the second is the next
    6·2 answers
  • I got a maths equation which i don't really get how to work out, the question is : solve 4x^2+x-3=0
    7·1 answer
  • For a standard normal distribution,Find P(-1.21 < Z< 2.26)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!