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solong [7]
3 years ago
14

Mari starts off with $1 in her piggy bank. Each week, Mari's dad adds $3 to Mari's

Mathematics
2 answers:
Ulleksa [173]3 years ago
8 0

Answer:

1+(3x7) she has 22 dollars

Step-by-step explanation:

melamori03 [73]3 years ago
3 0

Answer:

y=3x+1

Step-by-step explanation:

x is the weeks and y is the final product

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What is the unit form of 7÷4
Natasha2012 [34]

Answer:

1.75

Step-by-step explanation:

7 ÷ 4 = 1.75

HOPE THIS HELPS

6 0
3 years ago
The sum of all three numbers is 12. The sum of twice the first number, 4 times the second number, and 5 times the third number i
grigory [225]

Answer:

The numbers are 7, 4 and 1

Step-by-step explanation:

Let the numbers =x, y, z.

The sum of all three numbers is 12, x+y+z=12--------i

The sum of twice the first number, 4 times the second number, and 5 times the third number is 35, 2x+4y+5z=35-------ii

The difference between 8 times the first number and the second number is 52, 8x-y=52---------iii

Now, from (i),z =1-x-y--------iv

substitute (iv) in (ii),

2x+4y+5(12-x-y)=35

2x+4y+60-5x-5y=35

collect like terms

-3x-y=-25

that is, 3x-y=25--------v

solving (iii) and (v) simultaneously (add iii and v), we have

11x=77

divide both sides by 11 to obtain x=7

Put x=7 in (v)

3(7)+y=25

21+y=25

implies y=25-21=4

put x=7 and y=4 in (iv)

z=12-7-4=1

Hence, the numbers are 7, 4 and 1.

5 0
3 years ago
9(5x + 1) ÷ 3y
Ad libitum [116K]

, 15x+3/y...............

4 0
2 years ago
Help plz, asap!
Montano1993 [528]

Answer:

1 I think but you said they all have the same area

3 0
2 years ago
Read 2 more answers
Solve the system by the addition method <br> 4x=3y-8<br> -16x+4y=32
butalik [34]
4x = 3y - 8
 4         4
  x = ³/₄y - 2

                  -16x + 4y = 32
       -16(³/₄y - 2) + 4y = 32
-16(³/₄y) + 16(2) + 4y = 32
          -12y + 32 + 4y = 32
          -12y + 4y + 32 = 32
                    -8y + 32 = 32
                           - 32  - 32
                            -8y = 0
                             -8    -8
                               y = 0
x = ³/₄y - 2
x = ³/₄(0) - 2
x = 0 - 2
x = -2

(x, y) = (-2, 0)
6 0
3 years ago
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