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vovikov84 [41]
3 years ago
10

HELP ME WILL MARK BRIANLEST Molly and Maddie are clothes shopping. Molly has $100.00 and a coupon for a $5.00 discount at a clot

hing store where each shirt costs $15.00. Molly thinks that she can buy 8 shirts, but Maddie says that Molly can buy 7 shirts. The equations they used to model the problem are listed below.
Solve each equation algebraically, justify your steps, and determine who is correct and why.

Molly's equation
15x + 10 = 100

Maddie's equation
15x - 10 = 100
Mathematics
2 answers:
Sever21 [200]3 years ago
8 0

Molly's equation

15x + 10 = 100

     -10       -10

15x=90

/15    /15

x=6

Maddie's equation

15x - 10 = 100

     +10      +10

15x=110

/15     /15

x=7 1/3

MADDIE IS RIGHT

this is because she said 7 ans=d you cannot buy 1/3 of a shirt.

give the guy under me the 5 stare and a thanks this is his answer

dsp733 years ago
4 0

Answer:

Molly's equation

15x + 10 = 100

      -10       -10

15x=90

/15    /15

x=6

Maddie's equation

15x - 10 = 100

      +10      +10

15x=110

/15     /15

x=7 1/3

MADDIE IS RIGHT

this is because she said 7 ans=d you cannot buy 1/3 of a shirt.

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What is the mode of 23,95,100,23,100,100
Yakvenalex [24]

Answer:

The number that occurs most often in a set of numbers

in this case, the number 100 occurs more than any other number in the set.  This means that the mode for this set of data is 100.

4 0
3 years ago
Read 2 more answers
Find the area will mark brainliest
jarptica [38.1K]
The area of the rectangle portion is base times hight, in this case 6 * 10, which we get 60 for. Next to find the area of the triangle we calculate 1/2 base times hight, or 1/2 6 * 7, which we get 21 for. 60 + 21 = 81m^2
3 0
3 years ago
5x 2y = 7 y = x 1 What is the solution set of the given system? {(5/7, 12/7)} {(12/7, 5/7)} {(9/7, 16/7)} {(16/7, 9/7)}.
OLEGan [10]

The correct option is A, which is {(5/7, 12/7)}.

<h2>Given to us,</h2>

equation 1, 5x + 2y = 7,

equation 2, y = x+1

To solve the question, as given in equation 2 the value of y which is equal to x+1, Substitute the value of  y in equation 1,

5x + 2y = 7

<h3>substituting,</h3>

5x + 2(x+1) = 7\\5x+2x+2=7\\7x+2=7\\7x=7-2\\7x=5\\\\x= \dfrac{5}{7}

Now, we have the value of x, substitute the value in equation 2, to get y,

y=x+1\\y=(\frac{5}{7})+1\\

Taking LCM,

y=\frac{5+(1\times 7)}{7}  \\y= \dfrac{12}{7}

Hence, the correct option is A, which is {(5/7, 12/7)}.

To know more visit:

brainly.com/question/2263981

4 0
2 years ago
My monthly cell phone bill is $40 plus $.10 for each text message. Write an equation to show the cost of texting. What is my tot
Otrada [13]

Answer:

y=.1x+40; Your total monthly bill is $48 for 80 text messages.

Step-by-step explanation:

y is your total bill

x represents each text message

40 is you cellphone bill cost

.1 is the cost per text message

(y=.1x+40 becomes your equation)

plug 80 to represent "x"

y=.1*80+40 --->  y=48

your total monthly bill is $48

8 0
3 years ago
-9q = 63 what would be q
Snezhnost [94]

Answer:

-7

Step-by-step explanation:

-9q = 63

q= 63/-9 = -7

7 0
3 years ago
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