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
pishuonlain [190]
3 years ago
9

Marsha has some math exercises to do for homework. She did one half during study period and two thirds of those remaining while

waiting for a friend after school. He had three to finish at home that evening. How many exercises did she have for homework?
Mathematics
2 answers:
Paha777 [63]3 years ago
8 0

Answer: She has 1 5/6 exercises for homework.

Step-by-step explanation:

1/2 + 2/3 = 1 1/6

2 * 3 = 6 3 * 2 = 6

1 * 3 = 3 2 * 2 = 4

4 + 3/ 3 + 3

7/6 = 1 1/6

So, she finished 1 1/6 of her problems.

3 - 1 1/6 = 1 5/6

3 - 1 = 2

2 - 1/6 = 1 5/6

pshichka [43]3 years ago
3 0

Answer:  18

Step-by-step explanation:

Let x represents the number of exercises she had for homework.

Then, the expression for the number of exercises she did during study period =\dfrac{x}{2}

Remaining exercise = x-\dfrac{x}{2}=\dfrac{x}{2}

The number of exercises she did while waiting for a friend after school=\dfrac{2}{3}\times\dfrac{x}{2}=\dfrac{x}{3}

Also, she had three to finish at home that evening.

Then, we have

x=\dfrac{x}{2}+\dfrac{x}{3}+3\\\\\Rightarrow\ x-\dfrac{x}{2}-\dfrac{x}{3}=3\\\\\Rightarrow\dfrac{6x-3x-2x}{6}=3\\\\\Rightarrow\dfrac{x}{6}=3\\\\\Rightarrow\ x=6\times3=18

Hence, she had 18 exercises for homework.

You might be interested in
What is the equivalent of 306 meters?
Readme [11.4K]

Answer:

0.306 in kilometers

30600 in cm

306000 in mm

3.06e+8 in micrometer

3.06e+11 in nanometer

0.19014 in mile

334.646 in yard

1003.94 in foot

12047.2 in inch

0.165227 in nautical mile

Step-by-step explanation:

5 0
3 years ago
-7_-4 what is the answer plz help
AlexFokin [52]

the answer is

<

because the -4 is less than -7

5 0
3 years ago
Question 10 (5 points)
11Alexandr11 [23.1K]
I think the answer is A
3 0
3 years ago
Read 2 more answers
What is the length (magnitude) of vector (-4,2)
elena-s [515]

did u find out the answer ?

Step-by-step explanation:

3 0
3 years ago
What is the length of AB? please help!
ira [324]

Answer:

AB = 12

Step-by-step explanation:

Since the triangle is isosceles, the sides AB and BC are congruent. Then you have ...

4x = 2x+6

2x = 6 . . . . . . subtract 2x

4x = 12 . . . . . .multiply by 2

The side AB has length 12.

3 0
3 years ago
Other questions:
  • The last answer I got for this was not help full. Please help. Will give brainliest.
    14·1 answer
  • 4x^2+8x-12 it needs to be factored :)
    9·1 answer
  • 18. Find the measure of each numbered angle.
    12·1 answer
  • I really need help with number 1
    11·1 answer
  • Substitute the given values into the formula, and solve for the unknown variable.
    6·1 answer
  • Please help, will give brainlist!
    7·1 answer
  • A right triangle has one leg with a length of 48 and a hypotenuse with a length of 80. What is the length of the other leg? A. 6
    12·2 answers
  • 2. I pay $4.00 for my train fare everyday. This week, my train
    12·2 answers
  • Enola works at a grocery store and earns $15.75/hour at the end of the month the pay check enola receive total $693 How many hou
    11·1 answer
  • What is 8.25% of $25
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!