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4 years ago

An item is regularly priced at $20. Keiko bought it on sale for 15% off the regular price. How much did Keiko pay?

Mathematics

2 answers:

torisob [31]4 years ago

4 0

$20 x 0.10 = $2
half of 2 is 1
2 + 1 = 3
$20 - $3 = $17
(A simple method for percentages)

Anna71 [15]4 years ago

3 0

Pay = 20 - (20 x .15) = $17

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Calvin Butterball buys a book for $14.70, which is a 30% discount off the regular price. What is the regular price of the book?

Lesechka [4]

19.11$ is the answer

8 0

3 years ago

Your patient weighs 15 kg and is scheduled for to have an abdominal exploratory. You are instructed to provide 0.9% sodium chlor

kumpel [21]

Answer:

$V_f=450ml/hr$

Step-by-step explanation:

From the question we are told that:

Mass $m=15kg$

Amount of NaCl IV $n=0.9\%$

Rate $R=30ml/kg/hr$

Generally the equation for fluid rate be for your IV pump is mathematically given by

$V_f=mR$

Since

Rate is

30ml/kg/hr at 1kg patient Weight

Therefore

$V_f=15*30$

$V_f=450ml/hr$

6 0

3 years ago

Shirts-2-Go sells t-shirts for a base price of $12 per shirt plus a fixed fee of $3 shipping and handling for the whole order. S

Andrew [12]

Answer:

$5\ shirts$

Step-by-step explanation:

Let

x------> the number of shirts ordered

y-----> the total cost of the order

we know that

The linear equations that represent each situation are

Shirts-2-Go

$y=12x+3$ ------> equation A

Shirts PLUS

$y=8x+23$ ------> equation B

To know how many shirts to purchase so that the total cost is the same in both companies, equate equation A and equation B

$12x+3=8x+23$

$12x-8x=23-3$

$4x=20$

$x=5\ shirts$

8 0

3 years ago

Read 2 more answers

7x − 8y = 2 a function

seropon [69]

Answer:

x = 2/7 or 0.285714

Step-by-step explanation:

Your welcome :)

7 0

3 years ago

How do I solve fro r and q? 9r+q=13 3r+2q=-4

olga55 [171]

One way to solve the system of equations would be to solve for q (in terms of r) in the first equation to get:
9r + q = 13
q = 13 - 9r

Then, take the value for q you just found and insert it into the second equation:
3r + 2(13-9r) = -4

Then simplify and solve:
3r + 26 - 18r = -4
-15r = -30
r = 2

Now that you have the value for r, plug it into either of the original equations and solve for q:
9r + q = 13
9(2) + q =13
18 + q = 13
q = -5

r = 2; q = -5

7 0

3 years ago

Read 2 more answers