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inna [77]
3 years ago
12

Marcos buys 20 folders and 10 binders for a total of $100. Alicia buys 10 folders and 20 binders for $110. What is the price of

each folder and each binder?​
Mathematics
1 answer:
tresset_1 [31]3 years ago
4 0

Answer:

folder is $3 binder is $4

Step-by-step explanation:

Let folder be x and binders be y

Marcos

20x+10y= 100----------1

Alicia

10x+20y= 110-------------2

solve 1 and 2

20x+10y= 100 X 1

10x+20y= 110 X 2

20x+10y= 100

-20x+40y= 220

        -30y= -120

y= 120/30

y= 4

put y= 4 in 1

20x+10y= 100

20x+10(4)= 100

20x+40=100

20x=100-40

20x=60

x= 60/20

x=3

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aliya0001 [1]

Answer:

A.) If the origin is 0, then point c should be three lines to the right of 1 1/3 at number 1.

B.) 1/5

Step-by-step explanation:

Not completely sure if this is correct since im not postive of what its asking

4 0
3 years ago
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What is the relative frequency of adults with tickets?
malfutka [58]
Number of adults with ticket = 17
Total number of people interviewed = 50
Relative frequency of adults with ticket = 17 / 50 = 0.34
5 0
3 years ago
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Please help!!!!!!!! this is worth 60 points!!!!!!
Alik [6]

Answer:

y=1.25x+3.5

Step-by-step explanation:

Let y represent number of tickets and x represent the total cost to purchase them.

Now,assuming the relation to be of the form:

y=ax+b, where, a and b are constants.

Let us find a and b using the values from the table.

For, x=7,y=12.25. So,

12.25=7a+b\\or\ 7a+b=12.25------------1

For, x=10,y=16. So,

16=10a+b\\or\ 10a+b=16------------2

Subtract equation 1 from equation 2. This gives,

10a+b-7a-b=16-12.25\\(10a-7a)+(b-b)=3.75\\3a=3.75\\a=\frac{3.75}{3}=1.25

Now, plug in a=1.25 in equation 1 and solve for b

7(1.25)+b=12.25\\8.75+b=12.25\\b=12.25-8.75=3.5

Therefore, the relation between the number of tickets and total cost of purchase is given as:

y=ax+b\\y=1.25x+3.5

6 0
3 years ago
Delia bought 3.8 pounds of peppers. The peppers cost $1.99 per pound. What was the total cost of Delia’s peppers?
yawa3891 [41]
Step-by-step problem

1.99(3.8) = 7.56$.

ANSWER:

Total cost is 7.56$.
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the function p(t)p(t)p, left parenthesis, t, right parenthesis models the average high temperature, in degrees celsius, of paity
Mnenie [13.5K]

The solution set for the last equation represents the set of all days when the towns have the same average high temperature.

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  • P(t) is the average high temperature, in degrees Celsius, of Paityn's town on t days.

       \begin{aligned} P(t)&=22.5+7.5\cos\left(\dfrac{2\pi (t-28)}{365}\right)\\\\  \end{aligned}

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        \\ V(t)&=30.5+1.5\cos\left(\dfrac{2\pi (t-90)}{365}\right)

  • So, P(t) = V(t) represents the set of all the days when both towns have the same average high temperature.

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