1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lisabon 2012 [21]
3 years ago
10

Hi! can anyone help me please, I dont even know where to start.

Mathematics
2 answers:
makvit [3.9K]3 years ago
7 0

Answer:

$83.97

Step-by-step explanation:

Let's find the total thickness of all 42 books first. To do this, we do 42 * 1.75 = 73.5 inches. We know that each shelf is 3 feet long, but we want to convert to the same unit so that it's easier to calculate, so each shelf is 3 * 12 = 36 inches long. Now, to find the number of shelves needed, we'll do total thickness/length of each shelf which is 73.5 / 36, or 2.04. Our answer has to be an integer (because you can't have half of a shelf), so do we round up or down? Well, if we rounded down, then there wouldn't be enough room for all the books, so we round up to 3 shelves instead. Because each shelf is $27.99, the price for 3 will be 27.99 * 3 = $83.97. Hope this helps!

Alexandra [31]3 years ago
6 0
I think the answer is $83.97 hope you get it right
You might be interested in
Reshaun sells houses. He gets a 4% commission for every house he sells.This month he sold $518,000 worth of houses. How much doe
Elden [556K]

Answer:

$20,720

Step-by-step explanation:

$518,000 x 4% = $20,720

8 0
3 years ago
Read 2 more answers
3. Write the equation of a line in slope-intercept form that passes through (9, 4) and is
konstantin123 [22]
⭐️- Remember that slope formula is y=mx+b

1. Know that the m is (-3)
2. 4=(-3)(9)+b
3. 4=(-27)+b
4. b=31
5. y=(-3x)+31
6. y=3x-31*

*whenever it is finding a perpendicular, you switch the signs; when it is finding a parallel, you leave it alone

8 0
3 years ago
Suppose that you want to have $1,000,000. so, you invest an initial $15,000 today which pays an annual compounding rate of 9%. a
xenn [34]
To awnser this , you first need to discover how much is 9% of 15000 that you invested.
To discover that you can just divide by 100 and multiply by 9
15000 ÷ 100 = 150
150 × 9 = 1350
So each year he earns $1350 but he has $1000 annual payments , so he only profit $350 a year.
Now to discover how long it will take to achieve $1.000.000 back you can just take the the $15.000 he needs to have 1.000.000 and divide by how much he profit each year
15000÷350= 42.85
which means it will take approximately 42 years and 10 months to achieve $1.000.000

3 0
4 years ago
What geometric<br> constructions can have a<br> perpendicular bisector?
Andrews [41]

Answer:

A perpendicular bisector of a line segment is a line segment perpendicular to and passing through the midpoint of (left figure). The perpendicular bisector of a line segment can be constructed using a compass by drawing circles centered at and with radius and connecting their two intersections.

5 0
3 years ago
The current in a stream moves at a rate of 7 mph. If a boat travels 98 miles downstream in the same time that it takes to travel
JulijaS [17]

If the current in a stream moves at a rate of 7 mph. If a boat travels 98 miles downstream in the same time that it takes to travel 49 miles upstream then the speed of the boat in still water is 21 miles per hour.

<h3>What is speed?</h3>

Speed is the distance covered by an object in a certain time period. It is also known as velocity. The formula of speed is as follows:

Speed=Distance/ Time.

<h3>How to calculate speed?</h3>

We have been given that the speed of stream is 7miles per hour.

Let v be the speed of the boat, and t the time to travel

98=t*(7+v) (1)

49=t(v-7) (2)

(1)+(2) => 2tv=147

7t+(49+7t)=98

14t+49=98

14t=49

t=49/14

t=7/2

Put the value of t in equation 1 to get the value of v:

98=t(7+v)

98=7/2(7+v)

196/7=7+v

28=7+v

v=28-7

v=21

Hence if the current in a stream moves at a rate of 7 mph. If a boat travels 98 miles downstream in the same time that it takes to travel 49 miles upstream then the speed of the boat in still water is 21 miles per hour.

Learn more about speed at brainly.com/question/4931057

#SPJ2

6 0
2 years ago
Read 2 more answers
Other questions:
  • Heather finished a race in 58.4 seconds, which was 2.6 seconds less than her practice time. Write and solve an equation to find
    13·1 answer
  • For what value of g does the function f(g) =g^2 + 3g equal 18
    12·2 answers
  • The distance Train A travels is represented by d = 67t, where d is the distance in kilometers and t is the time in hours. The di
    12·1 answer
  • What is the algebraic expression for the following word phrase: the difference of 6 and x
    12·1 answer
  • Maria is four times as old as Frank. In two years Maria will be 3 times as old as Frank. Find their present ages?
    15·1 answer
  • Y = 10.5x<br> y = 7.5x + 30
    8·1 answer
  • A contractor purchases 6 dozen pairs of padded work gloves for ​$.85.68. She incorrectly calculates the unit price as ​$14.28 pe
    5·2 answers
  • Pls help with this question!!!
    11·2 answers
  • Y=-3x + 10<br> y = -2x + 6<br> Substitution method
    10·2 answers
  • Simplify the expression 21b^4 - 3b by combining like terms
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!