3 years ago

. 15 pens at $. 79 each 13 erasers at $.29 each.

Mathematics

1 answer:

gregori [183]3 years ago

3 0

Answer:

15.62

Step-by-step explanation:

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During a sale, everything in the store was ⅕ off the ticketed price. What percent of an item's original price should you expect

tiny-mole [99]

You would pay 80% of the original price because 1/5 is 20% and you would subtract 20 from 100 to get 80 as your answer

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3 years ago

What is the solution set for x2+25=0

Masja [62]

Step-by-step explanation:

${x}^{2} + 25 = 0 \\ \therefore {x}^{2} = - 25 \\ \therefore {x} = \sqrt{ - 25} \\ \therefore {x} = \pm\sqrt{ - 1 \times 25} \\ \therefore {x} = \pm \sqrt{ 25} \times \sqrt{ - 1} \\ \therefore {x} = \pm5 \: i \\ \therefore {x} = \{ - 5i, \: \: 5i \} \: \\ is \: the \: solution \: set.$

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3 years ago

The fruity snack company is packaging fruit loop cereal in small snack bags each snack is to weigh 30 grams with a tolerance of

katrin [286]

9514 1404 393

Answer:

|w -30| > 1.6
(-∞, 28.4) U (31.6, ∞)

Step-by-step explanation:

1. The snack bags will be rejected if their weight differs from 30 grams by more than 1.6 grams:

|w -30| > 1.6

2. This inequality resolves to two inequalities.

w -30 > 1.6

w > 31.6 . . . . . add 30

and

-(w -30) > 1.6

w -30 < -1.6 . . . multiply by -1

w < 28.4 . . . . . add 30

The solution in interval notation is the union of the two disjoint intervals:

(-∞, 28.4) U (31.6, ∞)

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3 years ago

How to use 1 to 9 digits to make the sum of 999

pantera1 [17]

Can the numbers be repeted!!!!!!!!!!!!!!!!!!!!!!!!!

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3 years ago

Please help i will give brainlyest i promise

oksian1 [2.3K]

Answer:

the fist one

Step-by-step explanation:

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3 years ago

Read 2 more answers

. 15 pens at $. 79 each 13 erasers at $.29 each.​

. 15 pens at $. 79 each 13 erasers at $.29 each.