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
frutty [35]
3 years ago
9

Ann has 30% less money than Mary, and Jessica has 70% more than Mary. If the 3 of them have a (added up) total of $102, how much

money does each girl have individually. Only serious answers. Stupid answers will be reported
Mathematics
1 answer:
Roman55 [17]3 years ago
3 0
Let x be the amount of Ann money, y be Jessica's money and z Mary money. 
30% of z equates 0.3*z. 
Ann has 30% less than z so: x = z - 0.3z = 0.7z.
70% of z equates 0.7z. 
"Jessica has 70% more than Mary " we deduce the equation: y =z+0.7z= 1.7z.
Signe the total is $102, we deduce the equation x+y+z = 102. 
x=0.7z and y=1.7z then 0.7z+1.7z+z=102, therefore 3.4z=102 then 
z =102/3.4 = $30.
x=0.7*30= 21 and y=1.7*30=51.

Ann has $21, Mary has $30 and Jessica has $51.
  
You might be interested in
Find the slope of the line through each pair (1,-19),(-2,-7)
expeople1 [14]

hello i see that no one has answered your question yet well im here to help:)

(1,-19),(-2,-7)

so here one way you can find the slope

i usually always use this to help me to keep it in order

------------------

(X1,Y1)(X2,Y2)

   X2-X1

   Y2-Y1

use this and your garanteed to get the right answer everytime

------------------

X = -2 – 1 = -3

Y = -7 – -19 = 12

once you do that you divide if possible

12/-3

which gives you -4

so your answer is -4

its really not hard you just got to get use to it

hope it help you:)

5 0
3 years ago
Read 2 more answers
Please Help! Look at Screenshot for question.
iogann1982 [59]

Answer:

C

Step-by-step explanation:

A modified box plot does not include the outliers in the whiskers, instead they are points outside of the whiskers

5,25,33,34,34,37,37,40,42,45,45,46,46,49,73

This data has 2 outliers 5 and 73 so we have 2 choices for a modified box plot D or D

The lowest value outside of the outliers is 25 , so C would be the logical choice

D has the lower end of the whisker too close to the outlier

3 0
3 years ago
What are the solutions of the system?
miskamm [114]
We have the following system of equations:
 y = -6x-6
 y = x2-5x-6
 Matching we have:
 x2-5x-6 = -6x-6
 Rewriting we have:
 x2-5x-6 + 6x + 6 = 0
 x2 + x = 0
 Rewriting:
 x (x + 1) = 0
 The solutions are:
 x = 0
 x = -1
 For x = 0
 y = -6 (0) -6 = 0-6 = -6
 y = -6
 For x = -1
 y = -6 (-1) -6 = 6-6 = 0
 y = 0
 The solutions are:
 (x, y) = (0, -6)
 (x, y) = (- 1, 0)
 Answer:
 
The solutions of the system are:
 (-1, 0) and (0, -6)
3 0
3 years ago
Evaluate the expression when m = 6 and n = 5. <br><br> 6n + 4m
SIZIF [17.4K]

Answer:

54

Step-by-step explanation:

6*5=30

4*6=24

24+30=54

7 0
2 years ago
HELPPP!!<br> x - $445.42 = $101.53
Tresset [83]
$546.95
This should be correct. Simply add the end value to the known one
7 0
3 years ago
Read 2 more answers
Other questions:
  • Solving Quadratic Systems
    6·1 answer
  • Dante is solving the system of equations below.
    14·2 answers
  • Stan won 150 packs of gum In a contest .his brother gave him 15 packs of gum. how is the 1 in 150 different from the 1 in 15?
    12·2 answers
  • The radius of a cylinder is 3x - 2 cm. The height of the cylinder is x + 3 cm. What is the surface area of the cylinder? Use the
    5·1 answer
  • Multiply or divide to find the missing number in each pattern 64,32,16,blank ,4,2​
    11·2 answers
  • While chasing its prey, a cheetah is running slowly and then increases its speed by 50.6 miles per hour to reach a top speed of
    14·1 answer
  • jacks mom purchased a savings bond for jack. the value of the savings bond increases by 5% each year. one year after it was purc
    12·1 answer
  • What is the circumference of a circle that's radius is 6.3​
    6·2 answers
  • You plant flowers in your garden and only 75% of them sprout how many can you predict to sprout if you plant 20 seeds?
    10·1 answer
  • Cheryl and her sister Diane walk to school along the same route. Cheryl walks at an average of
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!