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3 years ago

11

The discounted price of a book is 85% of the original price. This is a savings of $3. A sales tax of 8% will be added to the dis

counted price. How much sales tax will be added?
Help ASAP

1 answer:

Ad libitum [116K]3 years ago

4 0

I think the sales tax is $0.28 cents

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John Glenn High School has approximately 1000 students. A survey randomly asked 20 students if they regularly buy lunch. Of thos

lutik1710 [3]

Answer:

Here we have the table for the 8 students that said yes.

a) Out of the 8 students, 5 purchased their favorite food more than four times a month.

The proportion will be p = 5/8, and this can not be simplified anymore because 5 is a prime number and 5 is not a factor of 8.

b) The mean time will be equal to the amount of each of the 8 purchased their favourite food divided by the total sample (8)

This is:

m = (6 + 4 + 3 + 8 +6 + 9 + 4 + 7)/8 = 5.875

c) Out of a sample of 20, 8 buy lunch regularly, this is; p1 = 8/20

The amount of students that regularly buy food will be:

p1*1000 = (8/20)*1000 = 400

And of those 400, 5/8 buy their favourite lunch more than 4 times per month:

(5/8)*400 = 250

d: The mean number of times that a student regularly buys salad.

We have 3 students that regularly buy salad (so we only do the math with those 3)

The mean is (8 + 6 + 7)/3 = 7

So for the students that regularly buy salad, the mean of times that the buy salad in a month is 7 times.

5 0

4 years ago

A circle of a certain radius has an area which is numerically 5 times the value of the circumference. What is the radius of the

patriot [66]

We have been given that a circle of a certain radius has an area which is numerically 5 times the value of the circumference. We are asked to find the radius of the circle.

We know that area of circle with a radius of r units is $\pi r^2$ .

We know that circumference of a circle is $2\pi r$ .

5 times the value of circumference would be $5(2\pi r)=10\pi r$ .

Now we will equate 5 times circumference with area as:

$\pi r^2 = 10\pi r$

Let us solve for r.

$\pi r\cdot r = 10\pi r$

$\frac{\pi r\cdot r}{\pi r}=\frac{10\pi r}{\pi r}$

$r=10$

Therefore, the radius of the circle would be 10 units.

5 0

4 years ago

When a ________contains only numbers and at least<br> one operation it is called a _________.

Inessa05 [86]

Could you show us the picture or there isn’t one ?

6 0

3 years ago

Donna de paul is raising money for the homeless. She discovers that each church group requires 2 hours of let her writing and 1

Salsk061 [2.6K]

Answer:

x = 7

y = 3

z (max) = 4950/3 = 1650

Step-by-step explanation:

Let call

x numbers of church goup and

y numbers of Union Local

Then

First contraint

2*x + 2*y ≤ 20

Second one

1*x + 3*y ≤ 16

Objective Function

z = 150*x + 200*y

Then the system is

z = 150*x + 200*y To maximize

Subject to:

2*x + 2*y ≤ 20

1*x + 3*y ≤ 16

x ≥ 0 y ≥ 0

We will solve by using the Simplex method

z - 150 *x - 200*y = 0

2*x + 2*y + s₁ = 20

1*x + 3*y + 0s₁ + s₂ = 16

First Table

z x y s₁ s₂ Cte

1 -150 -200 0 0 = 0

0 2 2 1 0 = 20

0 1 3 0 1 = 16

First iteration:

Column pivot ( y column ) row pivot (third row) pivot 3

Second table

z x y s₁ s₂ Cte

1 -250/3 0 0 200/3 = 3200/3

0 - 4/3 0 -1 2/3 = -20/3

0 1/3 1 0 1/3 = -20/3

Second iteration:

Column pivot ( x column ) row pivot (second row) pivot -4/3

Third table

z x y s₁ s₂ Cte

1 0 0 750/12 700/6 = 4950/3

0 1 0 3/4 -1/2 = 7

0 0 1 -1/4 1/2 = 9/3

5 0

3 years ago

Which numbers will round to 3.75 when rounded to the nearest hundredth and will round to 3.7 when rounded to the nearest tenth

Lina20 [59]

Answer:

3.646

3.648

3.647Step-by-step explanation:

6 0

2 years ago

Read 2 more answers