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Firlakuza [10]
2 years ago
8

A 13​-foot ladder is placed against a vertical wall of a​ building, with the bottom of the ladder standing on level ground 5 fee

t from the base of the building. How high up the wall does the ladder​ reach?
The ladder reaches feet up the wall.
Mathematics
1 answer:
Tanzania [10]2 years ago
8 0
The answer is 12 because (a^2 + b^2 = c^2) 

5^2 + b^2 = 13^2  
 25  + b^2 = 169
                                                                          
169- 25 = 144    
 \sqrt{144}  Sqaure root of 144 is 12 so If we plug that in..
 25 + 144 = 169 
5^2 + 12^2 =13^2 
This all checks out 
~Hope This helps
You might be interested in
Therea re 8 kids at a birthday party. If there are 6 girls and 2 boys at the party, what draction of the kids are girls?
Alenkasestr [34]

Answer:

3/4

Step-by-step explanation:

The total number of children is 8 and the number of girls is 6. This can be represented as 6/8.

You would then need to simplify...

6/2=3

8/2=4

which which lead you to 3/4!

6 0
2 years ago
The Arc Electronic Company had an income of 90 million dollars last year. Suppose the mean income of firms in the same industry
jok3333 [9.3K]

Answer:

0.0869

Step-by-step explanation:

The arc electronic company had an income of 90 million dollars last year.

Mean(μ) = 75 million dollars

Standard deviation (σ) = 11 million dollars

Probability that the randomly selected will earn more than arc did last year = Pr(x>90)

Using normal distribution,

Z = (x - μ) / σ

Z = (90 - 75) / 11

Z = 15/11

Z = 1.36

From the normal distribution table, 1.36 = 0.4131

Φ(z) = 0.4131

Recall that when Z is positive, Pr(x>a) = 0.5 - Φ(z)

= 0.5 - 0.4131

= 0.0869

8 0
3 years ago
the sum of the first 6 terms of a geometric series is 15624 and the common ratio is 5. what is the first term of the series?
9966 [12]

Answer:

first term a=4

Step-by-step explanation:

Sum of the first 6 terms S6 = 15624

common ratio r= 5

n= 6

first term a=?

Formula: S6= a(r^n-1)/r-1

15624 = a( 5^6-1)/5-1

15624 = a(15625-1)/4

15624= a( 15624)÷4

15624= 15624a÷4

Cross multiply

15624×4 = 15624a

62496 = 15624a

divide both sides by 15624

62496÷15624 = 15624a÷15624

4 = a

a= 4

7 0
3 years ago
5 3/8 - 2 1/8 = (make sure you simplify the fraction)
Alex787 [66]
13/4, is your answer.
6 0
2 years ago
Please helppp me!!!!!
Scrat [10]

Answer:

Step 2 contains error in the given problem.

Step-by-step explanation:

Given expression is:

\frac{1}{2}x-3=\frac{1}{3}x+6

Step 1: identifying the LCM.

The LCM identified is 6.

This step is correct.

In the next step, we multiply the LCM with each term of the equation.

Step 2:

\frac{6}{1}(\frac{1}{2}x) -3 =\frac{6}{1}(\frac{1}{3}x)+6

However,

In the given solution, the LCM is not multiplied with each term.

Hence,

Step 2 contains error in the given problem.

7 0
2 years ago
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