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
alexira [117]
4 years ago
13

Please help fast! Thanks a lot

Mathematics
1 answer:
professor190 [17]4 years ago
3 0

Answer:

92.5

Step-by-step explanation:

Lets say, first number = x


Second number = 3x+7


Total = 49



(x)+(3x+7)= 49


4x+7 = 49


4x = 42


x = 42/4


x= 10.5



x= 10.5


3x+7 = 3(10.5)+7 = 92.5



Hope this helps!!

You might be interested in
The expression 3(x-9) is equivalent to (Look at picture for answer choices)
Vaselesa [24]

Answer:

The last one

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
mihalych1998 [28]

Answer:

2-11i

Step-by-step explanation:

-2-5i - (-4+6i)

Distribute the minus sign

-2-5i +4 -6i

Combine the real parts

-2+4 = 2

Combine the imaginary parts

-5i-6i = -11i

the complex number is

2-11i

3 0
3 years ago
How do you do y+3=0? I'm so totally confused please explain it :(
castortr0y [4]
Find y by maybe Pulling out like terms :

<span> 1.1 </span>    Pull out like factors :

   -y - 3  =   -1 • (y + 3) 

<span>Equation at the end of step  1  :</span><span>Step  2  :</span>Solving a Single Variable Equation :

<span> 2.1 </span>     Solve  :    -y-3 = 0<span> 

 </span>Add  3  to both sides of the equation :<span> 
 </span>                     -y = 3 
Multiply both sides of the equation by (-1) :  y = -3 


One solution was found :                   y = -3

<span>
Processing ends successfully</span>

6 0
3 years ago
Read 2 more answers
An artificial lake is in the shape of a rectangle and has an area of 9/20 square mile the width of the lake is 1/5 the length of
DIA [1.3K]
Answer:  The dimensions are:   " 1.5 mi.  ×  ³⁄₁₀  mi. " .
_______________________________________________
             { length = 1.5 mi. ;  width =  ³⁄₁₀  mi. } .
________________________________________________
Explanation:
___________________________________________
Area of a rectangle:

A = L * w ; 

in which:  A = Area = (9/20) mi.² ,
                L = Length = ?
                w = width = (1/5)*L = (L/5) = ?
________________________________________
  A = L * w ;  we want to find the dimensions; that is, the values for
                         "Length (L)"  and "width (w)" ; 
_______________________________________
Plug in our given values:
_______________________________________
 (9/20) mi.² = L * (L/5) ;  in which: "w = L/5" ; 
 
     → (9/20) = (L/1) * (L/5) = (L*L)/(1*5) = L² / 5 ;
   
          ↔  L² / 5  = 9/20 ;
 
            →  (L² * ? / 5 * ?) = 9/20 ?    

                →     20÷5 = 4 ;  so; L² *4 = 9 ;
 
                   ↔    4 L² = 9 ; 
 
                   →  Divide EACH side of the equation by "4" ;
           
                   →   (4 L²) / 4 = 9/4 ;
______________________________________
           to get:  →  L² = 9/4 ; 
 Take the POSITIVE square root of each side of the equation; to isolate "L" on one side of the equation; and to solve for "L" ;
___________________________________________          
 
     →   ⁺√(L²)   =   ⁺√(9/4) ;

    →   L  =  (√9) / (√4) ; 

    →  L = 3/2 ; 

    → w = L/5 = (3/2) ÷ 5 = 3/2 ÷ (5/1) = (3/2) * (1/5) = (3*1)/(2*5) = 3/10;
________________________________________________________
Let us check our answers:
_______________________________________
(3/2 mi.) * (3/10 mi.) =? (9/20) mi.² ??

→ (3/2)mi. * (3/10)mi.  =  (3*3)/(2*10) mi.² = 9/20 mi.² ! Yes!
______________________________________________________
So the dimensions are: 

Length = (3/2) mi. ;  write as: 1.5 mi.

width = ³⁄₁₀ mi.
___________________________________________________
or; write as:  " 1.5 mi.  ×  ³⁄₁₀ mi. " .
___________________________________________________
7 0
3 years ago
Matthew changes $770 into rupees. He receives 40 000 rupees.
Yanka [14]

Answer:

About 51.94 rupees (rounded).

Step-by-step explanation:

40000 / 770

7 0
3 years ago
Other questions:
  • Use an area model to solve the equation <br>391 × 41=
    6·2 answers
  • Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a c
    14·1 answer
  • Which polynomials are in standard form?
    14·1 answer
  • Oab.......................
    8·2 answers
  • Find the slope of the line that passes through the points (0, -3) and (-4,1).
    7·2 answers
  • What is/are the increasing interval(s) for the function shown? <br><br> Please help !
    6·1 answer
  • An investment of $100 is now valued at $149.18 the interest rate is 8% compounded continuously about how long has the money been
    9·1 answer
  • X-y=6, if x=2, then y= -4
    10·1 answer
  • What kind of a fraction is 6 1/3?
    12·2 answers
  • PLEASE HURRY Find the midpoints between points C (7, -9) and D (3, 5).
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!