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
kiruha [24]
3 years ago
7

Mary had a number of cookies. after eating one, she gave half the remainder to her sister. after eating another cookie, she gave

half of what was left to her brother. mary now had only five cookies left. how many cookies did she start with
Mathematics
2 answers:
Oduvanchick [21]3 years ago
7 0
For this question, you have to work backwards, so if she ate a cookie, working backwards, you would have to add, not subtract or divide.

Mary had 5 cookies after she gave half away. So 5 is half of something. 5 x 2 = 10. She had 10 cookies before she gave half to her brother.

Before she had 10, she ate one. So you add one to the ten.(Remember, working backwards). 10+1=11.

She had 11 cookies after she gave half. So 11 x 2 = 22.
She had 22 cookies before she gave half away.
She ate one before she had 22. 22+1=23.
We are finished. Mary started with 23 cookies.

Hope you understand! :)
bonufazy [111]3 years ago
6 0
7 cookies she ate 1 in total an she gave away 1 in total and she has 5 left
You might be interested in
Erika invested $6,000 in a bond at a yearly rate of 3% for 2.5 years. How much interest did she earn?
hram777 [196]

Answer:

Step-by-step explanation:

4 0
2 years ago
HELP ME AND MAKE IT QUICK PLEASE.
makvit [3.9K]

Answer:

B

Step-by-step explanation:

the sum of angles of triangle=180

B: 50+60+70=180

8 0
3 years ago
What is the domain and range?
MrRissso [65]

Hello from MrBillDoesMath!

Answer:

Domain = { 5. 10. 15. 20}

Range =  -3,-1,1,3} .


Discussion:

The domain is the set of all "x" values, that is  { 5. 10. 15. 20} and the range is (-3,-1,1,3} . The arrows in the diagram show the mapping between the domain and the range. For examples, 5 -> 1 ( "x value 5 is mapped to y value 1"),        10 ->3, 15 ->-3, and 20 -> -2


Thank you,

MrB

7 0
3 years ago
The figure to the right has its congruent segments marked. Find the measure of AB.
Vaselesa [24]

Answer:

the measure of AB =29 meters

5 0
3 years ago
What is the value of the expression (9+15)*3+2
dimulka [17.4K]
First do parenthesis the multiplication then add
9+15=24*3=72+2=74 :)hope this helps
3 0
3 years ago
Other questions:
  • The gray cat is larger than the black cat, and the brown cat is smaller than the white cat. The brown cat is not smaller than th
    9·2 answers
  • Kate is building a rectangular wall.the wall will be 332 bricks wide and 39 bricks tall how many bricks does she need to build t
    12·1 answer
  • Expanded form of 99.438
    11·1 answer
  • The difference between the record high and low temperatures in Daytona Beach, Florida, is 87° F. The record high temperature is
    6·1 answer
  • You purchase 3 items for $4.23. About how much did you spend?<br> $15<br> $10<br> $12<br> $13
    6·1 answer
  • . (3, 6) and (6,9)<br> slope of the line
    5·1 answer
  • Help please, thank you
    9·2 answers
  • A group of 28 students wants to go on a bus trip. The cost of the bus is $220. $94 dollars will be paid by one parent and the re
    8·1 answer
  • Please help me I'm literally gonna cry
    15·1 answer
  • How do you simplify 7v3 . 10uv5 . 8uv3
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!