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
klemol [59]
2 years ago
7

If you place a 29-foot ladder against the top of a building and the bottom of the ladder is 24 feet from the bottom of the build

ing, how tall is the building? Round to the nearest tenth of a foot.
Mathematics
1 answer:
kobusy [5.1K]2 years ago
3 0

Answer:

16.3

Step-by-step explanation:

You might be interested in
Please help me with these questions.
guajiro [1.7K]
There's no questions?
7 0
3 years ago
There are 8 tennis players in a round robin tournament, which means each team will play every other team once. How many matches
Aliun [14]
<h3>Answer:  28</h3>

==========================================================

Explanation:

Method 1

Imagine a table with 8 rows and 8 columns to represent all possible match-ups. You can actually draw out this table or just think of it as a thought experiment.

There are 8*8 = 64 entries in the table. Along the northwest diagonal, we have each team pair up with itself. This is of course silly and impossible. We cross off this entire diagonal so we drop to 64-8 = 56 entries.

Then notice that the lower left corner is a mirror copy of the upper right corner. A match-up like AB is the same as BA. So we must divide by 2 to get 56/2 = 28 different matches.

----------------------------------

Method 2

There are 8 selections for the first slot, and 8-1 = 7 selections for the second slot. We have 8*7 = 56 permutations and 56/2 = 28 combinations.

----------------------------------

Method 3

Use the nCr combination formula with n = 8 and r = 2

n C r = \frac{n!}{r!(n-r)!}\\\\8 C 2 = \frac{8!}{2!*(8-2)!}\\\\8 C 2 = \frac{8!}{2!*6!}\\\\8 C 2 = \frac{8*7*6!}{2!*6!}\\\\ 8 C 2 = \frac{8*7}{2!}\\\\ 8 C 2 = \frac{8*7}{2*1}\\\\ 8 C 2 = \frac{56}{2}\\\\ 8 C 2 = 28\\\\

There are 28 combinations possible. Order doesn't matter (eg: match-up AB is the same as match-up BA).

Notice how the (8*7)/2 expression is part of the steps shown above in the nCr formula.

7 0
1 year ago
Melissa has $100 in the bank. She plans to deposit $40 per week until she reaches $500. What is the rate of change? Explain what
Wewaii [24]

Answer:

$40 per week

Step-by-step explanation:

Step one:

Given data

the initial amount is = $100

the total amount= $500

let the number of weeks be x

Step two:

The expression for the scenario is

500= 100+40x-------1

From the expression above, the rate of the change is $40 per week.

this means that in every week the account will be increased by $40

5 0
2 years ago
Solve 12x+6 2 9x+ 12.
Nadusha1986 [10]
Assuming that there are plus signs between the 6, 2, and 9 the answer is 21x+20
6 0
3 years ago
Apples are on sale for $3.12 per kilogram. Is the total cost of the apples proportional to the total mass?
Arisa [49]

Answer:

Yes.

Step-by-step explanation:

We have given the price of apple per kilogram.

Hence, price of total apples is equal to the product of number of apples and price per kilogram of apple.

3 0
3 years ago
Read 2 more answers
Other questions:
  • The cost to manufacture t shirts can be represented by the function c(x)=10.5x complete the following statement about the functi
    7·2 answers
  • Are the data shown in this line plot skewed left, skewed right, or not skewed?
    11·2 answers
  • Find the point on the terminal side of θ = -3π / 4 that has an x coordinate of -1. Show work
    13·1 answer
  • Solve the system by using a matrix equation.<br> --4x - 5y = -5<br> -6x - 8y = -2
    12·1 answer
  • Which expression is equivalent to 4(6 + 8)? (1 point)
    10·1 answer
  • If Peter withdrew $47.27 from the bank and deposited $598, how would his bank account change? (Indicate how much his account wou
    7·1 answer
  • What is the answer need it
    7·1 answer
  • A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 1/3x. Find the height of
    6·1 answer
  • Find and Interpret the range of the points earned.
    9·1 answer
  • Solve the following system of equations.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!