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Lilit [14]
3 years ago
10

How high is the end of the ladder against the building?

Mathematics
1 answer:
Galina-37 [17]3 years ago
6 0

Answer:

D.

Step-by-step explanation:

its a right triangle, so we can use the pythagorean theorem to find h

(pythagorean theorem is a^2+b^2=c^2, c is the hypotenuse)

h^2+4^2=13^2

h^2+16=169

h^2=153

h=sqrt153

h≈ 12.4ft

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Can someone clearly explain and workout Q19? Much appreciated
Anna007 [38]
The x coefficient is 2
Take half of 2 to get 2/2 = 1
Square 1 to get 1^2 = 1

Add and subtract 1 to the expression. This is the same as adding 0. 

x^2 + 2x + 2
x^2 + 2x + 2 + 0
x^2 + 2x + 2 + (1-1)
(x^2 + 2x + 1) + 2 - 1
(x+1)^2 + 1

Answer: (x+1)^2 + 1

 
5 0
3 years ago
Which of the following is a which of the following is a rational number?
Nastasia [14]

Answer:

A. √25

General Formulas and Concepts:

<u>Math</u>

  • Rational Numbers - numbers that can be written as integers, terminating decimals, or fractions
  • Irrational Numbers - numbers that have non-terminating decimals i.e infinite decimals and cannot be written into a fraction

Step-by-step explanation:

<u>Step 1: Define</u>

A. √25

B. √123

C. √20

D. π

<u>Step 2: Identify</u>

A. √25 = 5; Rational

B. √123 ≈ 11.0905...; Irrational

C. √20 = 2√5 ≈ 4.47214...; Irrational

D. π ≈ 3.1415926535897932384626433832795...; Irrational

Therefore, our answer choice is A.

5 0
3 years ago
Fraction to decimal , problem 27 over 75?
bulgar [2K]
0.36 I hope this was what you wanted
6 0
3 years ago
a baker orders 162 eggs. each cartoon contains 18 eggs. which equation can you use to find the number x of cartoons?
Oxana [17]
18x = 162

x = 9

There are 9 cartons filled with 18 eggs each, which is 162 eggs in total.
4 0
3 years ago
The following sequence of operations is done on a number. Multiply by 5, add 2, subtract 10, multiply by 2. The final result is
strojnjashka [21]

answer the original number is 6

(5x + 2 - 10) *2 = 44

10x + -16 = 44

10x = 60

x=6

4 0
3 years ago
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