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
lora16 [44]
3 years ago
11

If Nina is N years old now and Maryna is M years old now, write… Four years ago, Nina was three times as old as Maryna was.

Mathematics
1 answer:
almond37 [142]3 years ago
3 0

Answer:

N - 4 = 3(M - 4). Simplified further, N - 4 = 3(M - 4)

Step-by-step explanation:

Given,

Nina is N years old now and;

Maryna is M years old now

If four years ago, Nina was three times as old as Maryna was, then

Four years ago, Nina's age was N - 4

Four years ago, Maryna's age was M - 4

Given that Nina was three times as old as Maryna was four years ago, it means that

N - 4 = 3(M - 4)

To solve further

N = 3m - 12 + 4

N = 3M - 8

You might be interested in
Miles and kilometers are twi different scales for measuring distances. A 5-kilometer race is approximately 3.1 miles, and a 10-k
sveta [45]

Answer:

x=\dfrac{y}{0.62}

Step-by-step explanation:

5\ \text{km}=3.1\ \text{miles}\\\Rightarrow 1\ \text{km}=\dfrac{3.1}{5}=0.62\ \text{miles}

10\ \text{km}=6.2\ \text{miles}\\\Rightarrow 1\ \text{km}=\dfrac{6.2}{10}=0.62\ \text{miles}

Let y be the distance in miles. So distance in km is given by

x=\dfrac{y}{0.62}.

The equation that shows the approximate distance in kilometers as a function if the distance in miles is x=\dfrac{y}{0.62}.

7 0
3 years ago
Please explain . . .
choli [55]

Answer:

9

Step-by-step explanation:

05 \times 2. \div 2

4 0
3 years ago
Brandon had already read 6 books this year before joining a book club, and he plans to read 1 book every month now that he has j
jok3333 [9.3K]
15 - 6 = 9
So 9 months
6 0
3 years ago
Find the measure of the angle indicated in bold
GuDViN [60]

Answer:

3/2 =x

Step-by-step explanation:

These two angles are interior angles.  They add up to 180 degrees

20x+5 = 24x-1

Subtract 20x from each side

20x-20x+5 = 24x-20x-1

5 = 4x-1

Add 1 to each side

5+1 =4x-1+1

6 =4x

Divide by 4

6/4 = 4x/4

3/2 =x

5 0
3 years ago
The roots of 6 corn plants had depths of -3.54 feet? /2 4/5 feet, /3.86 feet, -3 2/5 feet. How many corn plants had roots betwee
Lana71 [14]

Since roots go down into the ground, the answers must be negative. That eliminates both 2 4/5 deep and 3.86. You could look at a number line if your unsure, but -3.54 is between 3 and 4, as is -3 2/5.

5 0
3 years ago
Other questions:
  • Need help an is due tomorrow and please please show your work
    11·1 answer
  • The table shows the results of two surveys that randomly sampled 100 kids about their favorite types of pizza.
    11·1 answer
  • How to do word problem 7
    5·1 answer
  • Simplify the expression 18+3(9f-13)​
    14·1 answer
  • Convert 120 kilometers per hour into miles per hour using dimensional analysis
    13·1 answer
  • Y = x + 3 x = –2<br><br> [-2, -15/2]<br><br> [-2, 5/3]<br><br> [-2, 11/6]<br><br> [-2, 13/6]
    5·1 answer
  • What is the Square root of -100
    14·2 answers
  • What is 2x2+2 mmmmmmmmmmmmmmmmmmm
    9·1 answer
  • What is one plus one
    14·2 answers
  • Which is the area of the rectangle?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!