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3 years ago

Help please with this math

Mathematics

2 answers:

nexus9112 [7]3 years ago

7 0

6 is the answer as 7 x 5 =35 -29 is 6

inessss [21]3 years ago

3 0

Answer:

7*5 + -29

Step-by-step explanation:

She makes 7 payments of 5 to the store

7*5

Then she gets 29 dollars back so that would be negative

+ -29

7*5 + -29

35 -29

She has paid 6 dollars to the store

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3 years ago

X + y = 152,<br><br> 8.5x + 12y = 1,656<br><br> How many hats were sold?

Elodia [21]

Answer:

x = 48 and y = 104

Step-by-step explanation:

Given equations are:

$x+y = 152\\8.5x+12y=1656$

From equation 1:

$x = 152-y$

Putting the value of y in equation 2

$8.5(152-y)+12y = 1656\\1292-8.5y+12y = 1656\\3.5y+1292 = 1656\\3.5y = 1656-1292\\3.5y = 364\\\frac{3.5y}{3.5} = \frac{364}{3.5}\\y = 104$

Now we have to put the value of y in one of the equation to find the value of x

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Hence,

The solution of the system of equations is x = 48 and y = 104

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