MATHEMATICS MIDDLE SCHOOL

You lean a ladder 6.7 meters long against a wall. It makes a 63 degree angle with the level ground. How high up is the top of the ladder?

Answers

Answer 1

Answer: The answer is in the attachment
........................................................

Answer 2

Answer:

Answer:

1.12 meters

Step-by-step explanation:

sin(63)=x/6.7

6.7(sin(63))=x

x=1.12

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what is the least common denominator of 5/8 and 2/3 what is the least common denominator of 3/5 and 7/10 what is the least common denominator of 3/7 and 1/6 what is the least common denominator of 2/3 3/4 and 1/12 please anwser these four questions please

Answers

1.) 24 (8*3)
2.) 10 (10*1,5*2)
3.) 42 (7*6)
4.) 12 (3*4,12*1)

After how many years are the salaries offered by company b and c the same?

Answers

A and B
3000x + 24000 = 2400x + 30000
3000x - 2400x = 30000 - 24000
600x = 6000
x = 6000/600
x = 10 years A and B are the same

B and C
2400x + 30000 = 2000x + 36000
2400x - 2000x = 36000 - 30000
400x = 6000
x = 6000/400
x = 15 years B and C are the same

Sarah purchased a set of art supplies for $20.90 and a pair of jeans for $18.95.The sales tax rate in the state is 7%.How much change did Sarah receive from $50

Answers

Total purchase she did : $20.90+$18.95=$39.85
7% tax means that we have to 7% or (7/100) extra
7% X 39.85= 2.79
total pay: 39.85+2.79=42.64
total cash: $50
what she gets back: 50-42.64=7.36

Amanda's first four test scores are 77, 95, 84, and 69. What does Amanda need to score on the next test to have at least an 82 average?

Answers

The answer is...

85 or higher!

Simplyfiy 4 over 7 divided by 3 over negative 8

Answers

$(4)/(7)/(-3)/(8)$

With division when using fraction the first fraction stays the same, but you will switch the division sign to multiplication and you will take the reciprocale (flip the numerator and denominator) of the second fraction like so...

$(4)/(7)*(-8)/(3)$