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zloy xaker [14]
3 years ago
15

notecards cost $4 for a pack of 12. jenna gives the cashier $16 to buy the notecards. she gets $4 in change. how many packs of n

otecards does jenna buy?
Mathematics
1 answer:
Tju [1.3M]3 years ago
6 0

Answer: 3 packs of notecards.

Step-by-step explanation:

Since it costs $4 for a pack of 12, we could use multiplying to find the answer.

$4 x 3 = 12

$16 - $4 = $12

Therefore, Jenna buys 3 packs.

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The base of a triangle is one third of its height. If the area of the triangle is 24 square inches, what are the base and height
Burka [1]

Answer:

D. 4in, 12in

Step-by-step explanation:

Area of triangle  = 24in²

Unknown:

Base and height of the triangle = ?

Solution:

The area of a triangle  = \frac{1}{2} x base x height

   From the problem,

        base  = \frac{1}{3} x height

let the base  = b

            height  = h

         b =  \frac{1}{3}h

          h = 3b

Input into the formula of area;

       24  =  \frac{1}{2} x b x 3b

   Mulitply through by 2;

       48 = 3b²

         b² = 16

         b = √16 = 4

So, h = 3b= 3 x 4 = 12in

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3 years ago
There is an error in the diagram. Choose the statement that best describes what is wrong.
marishachu [46]

Answer:

the first one is right and other are wrong

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3 years ago
Y=2x-pq rearrange the formula to make x the subject
professor190 [17]
Y=2x-pq
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3 years ago
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yawa3891 [41]
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Sally’s income has increased by 10% and she decides to change her consumption of macaroni and cheese from 10 boxes to 8 boxes. H
UNO [17]

Answer:

-2; Inferior good

Step-by-step explanation:

Given that,

Initial Quantity = 10 boxes

New Quantity = 8 boxes

Percentage increase in Sally's income = 10%

Change in consumption:

= 8 boxes - 10 boxes

= - 2 boxes

Percentage change in quantity demanded:

= (Change in quantity demanded ÷ Initial quantity) × 100

= (-2 ÷ 10) × 100

= - 20%

Therefore,

Income elasticity of demand:

= percentage change in quantity demanded ÷ Percentage change in income

= - 20% ÷ 10

= -2

Inferior goods are generally have a negative income elasticity of demand which means that an increase in the income of the consumer will lead to reduce the quantity demanded for inferior good and vice versa.

Hence, the good is a inferior type of good.

6 0
3 years ago
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