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
ss7ja [257]
2 years ago
11

David is 4 years older than triple Marie's age. The difference of their ages is 38. How old is David?​

Mathematics
1 answer:
alexira [117]2 years ago
4 0

Answer:

56

Step-by-step explanation:

Let Davids's age = d

Let Marie's age = m

First part of the question tells us: d=4+(3m)

Second part of the question tells us: d=m+38

Sub in 'm+38' for d:

m+38=4+3m

3m-m=38-4

2m=36

m=18

d=m+38

=18+38

=56

You might be interested in
Businesses deposit large sums of money into bank accounts. Imagine an account with 10 million
Nikitich [7]

Answer:

The account will earn in one year the amount of $10,512,000

Step-by-step explanation:

Given as :

The principal in the account = $10,000,000

The rate of interest = 5.12% at simple interest

The time period = 1 years

Let The amount that account earn after 1 year = $A

<u>From Simple interest method</u>

Simple interest = S.I = \dfrac{\textrm principal\times \textrm rate\times \textrm time}{100}

or, S.I = \dfrac{\textrm 10,000,000\times \textrm 5.12\times \textrm 1}{100}

or, S.I = \dfrac{51200000}{100}

or, S.I = $512,000

So, Simple interest = S.I = $512,000

Now, Amount = Principal + Interest

I.e A =  $10,000,000 + $512,000

Or, A = $10,512,000

So, Amount = A = $10,512,000

Hence The account will earn in one year the amount of $10,512,000 Answer

8 0
3 years ago
Abdul walks 5km in 35 minutes. How far does he walk in 21 minutes​
AleksandrR [38]

Answer:

1km=7 mins

3km = 21 mins

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
I need help on this question ​
My name is Ann [436]
It would be p=1
Hope this helped
5 0
3 years ago
Read 2 more answers
Which number should each side of the equation 4/5x=8 be multiplied by too produce the equivalent equation of x= 10
Mariulka [41]
5/4   because 4/5x * 5/4 = x   and 8 * 5/4  = 10
5 0
3 years ago
How to convert 7 2/5 into a improper fraction
marusya05 [52]

Answer:

37/5

Step-by-step explanation:

7 2/5 = 37/5

5x7=35

35+2=37

Multiply the whole number and denominator then, add the numerator and put the sum of that back ontop of the denominator

Example:

W N/D   DxW=X  X+N= Y  

W N/D = Y/D

3 0
3 years ago
Other questions:
  • When does a parabola open upward
    11·2 answers
  • Graph the solution set of the system of inequalities or indicate that the system has no solution.
    7·1 answer
  • How would you solve this? Bc I don’t know which operation to use
    14·1 answer
  • If f(x)= (3x+x)/(x-3) what is f(a+2)
    13·1 answer
  • PLSSSSSS HELP <br> BRAINLIST
    8·1 answer
  • Perform the indicated operation and write the result in the form a + bi i^100
    13·1 answer
  • Plz help fasttttttttt
    12·1 answer
  • There are 100 tiles that were purchased to raise money for a new playground. The tiles will be laid along a walkway. Each tile i
    11·1 answer
  • What is the value of x in the equation 5.5x = 17.6?<br> 3.2<br> O 12.1<br> Q 23.1<br> O96.8
    6·1 answer
  • How to solve Need Answer asap
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!