Ask question

Ask question

All categories

2 years ago

12

One copy of a new book by Amanda's favorite author cost $9.45. If a total of 2,740 copies of the book were sold on the first day

of the book's release, what were the total sales that day?

1 answer:

Arisa [49]2 years ago

4 0

Without taking out the cost that would be given to the author and publisher it would be $25,893, you just multiply 9.45 by 2,740

You might be interested in

The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,

bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

$\bar{x_1}=3.02\\\\\bar{x_2}=3.04\\\\\sigma_1=0.08\\\\\sigma_2=0.06$

So, s would be

$s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075$

So, the value of test statistic would be

$t=\dfrac{\bar{x_1}-\bar{x_2}}{s(\dfrac{1}{n_1}+\dfrac{1}{n_2})}\\t=\dfrac{3.02-3.04}{0.074(\dfrac{1}{50}+\dfrac{1}{25})}\\\\t=\dfrac{-0.04}{0.074(0.02+0.04)}\\\\t=\dfrac{-0.04}{0.044}\\\\t=-0.90$

Hence, the test statistic is t= -0.90.

7 0

2 years ago

Find the slope of the line.

Damm [24]

y2-y1 / x2-x1 is how to get slop3 for 2 points (x1,y1) and (x2, y2). So 4-1 / 2-0 and the slope is 3/2. If this is right could you possibly give me brainliest? Hope this helped.

8 0

2 years ago

What kind of geometric figure is an angle bisector

Vitek1552 [10]

I think your answer would be a line or a ray
I hope this helps!

5 0

3 years ago

Read 2 more answers

-)) Aiden ordered a set of beads. He received 150 beads in all. 24 of the beads were brown. What

vesna_86 [32]

Answer:

16 %

Step-by-step explanation:

(24/150) . 100 = 16

5 0

2 years ago

I need to know what goes in the boxes<br> 20 points. :)

Nana76 [90]

Box 1 : 2
Box 2: 3
Box 3: 6

8 0

2 years ago

Read 2 more answers