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]
2 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]2 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
<img src="https://tex.z-dn.net/?f=x-17%3D-6" id="TexFormula1" title="x-17=-6" alt="x-17=-6" align="absmiddle" class="latex-formu
Hunter-Best [27]

Answer: 11

you want to add 17 to -6 and then x will = 11

Hope that had helped

4 0
2 years ago
Read 2 more answers
Please help i need help on question b
anzhelika [568]

There are 12 possible outcomes.....three of these will be a "7"  ...so...

A "7" should occur  1/4 of the time

If each player pays 20p to play.....the school  will take in  120 * 20  = 2400p

However.......1/4 of the players should win =  30 players.....and each lollipop costs 30p.....so......the school should spend 30 * 30  = 900p for the prizes

So......the school should raise   2400 - 900 = 1500p  if 120 people play the game

3 0
3 years ago
Read 2 more answers
$83 giraffe; 17% markup
zzz [600]

Answer:

Step-by-step explanation:

5 0
3 years ago
What is m∠PTR? a. 12 b. 40 c. 50 d. 140 HELP!!!
kramer

Answer:

m<PTR = 140°

Step-by-step explanation:

First, find the value of x. To find the value of x, derive an equation which you'd use in solving for x.

m<PTQ = (x + 28)°

m<RTS = (2x + 16)°

m<PTQ = m<RTS (vertical opposite angles are congruent)

Therefore:

x + 28 = 2x + 16

Solve for x. Combine like terms

28 - 16 = 2x - x

12 = x

x = 12

Find m<PTQ

m<PTQ = (x + 28)

plug in the value of x

m<PTQ = 12 + 28 = 40°

m<PTR + m<PTQ = 180° (supplementary angles)

m<PTR + 40° = 180° (substitution)

m<PTR = 180 - 40 (subtracting 40 from each side)

m<PTR = 140°

3 0
2 years ago
What is the equation of the line that passes through the point (-6,7) and has a slope of -5? Write the equation in slope interce
Vedmedyk [2.9K]

Answer:

y = -5x - 23

Step-by-step explanation:

Point-slope form:

y - 7 = -5(x + 6)

rearrange:

y - 7 = -5x - 30

y = -5x - 23

4 0
3 years ago
Other questions:
  • An ordered pair that makes a linear equation true is called
    11·1 answer
  • Work out the length of AB. Give your answer to 3 significant figures
    8·1 answer
  • 25w^2+60w+36 factor completely
    13·1 answer
  • Please help me on this I don't know how to do this help me to find out what property it is thank you . .
    8·1 answer
  • Solve using substitution.<br> 8x + 5y = 4<br> x = 3<br> What is x and y?
    14·2 answers
  • Find the surface area​
    6·1 answer
  • The table represents the equation y=4.2s, what is the value for y if x is 3<br><br><br> fast!!!!!!!
    5·1 answer
  • Plz help meeeeeeee I need help
    10·1 answer
  • Which is the slope of the lime that passes through the points (2, 8) and (4, 6)?
    11·2 answers
  • You rent an apartment that costs $1300 per month during the first year, but the rent
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!