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klasskru [66]
3 years ago
11

The foot of an extension ladder is 9 feet from a wall. The height that the ladder reaches on the wall and the length are consecu

tive integers. How long is the ladder?
Mathematics
1 answer:
Svetach [21]3 years ago
7 0

Answer:

It depends ln how tall the wall is if you don't have a number for the wall then I cannot answer this I'm sorry

Step-by-step explanation:

You might be interested in
billy and bob picked mangoes from a tree in the ratio 3:5 respectively. if they collected 16 mangoes altogether then how many di
mihalych1998 [28]

Answer:

10

Step-by-step explanation:

Billy Bob

3. 5

6. 10=16

3 0
3 years ago
Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao work
Sergio039 [100]
1) we calculate the portion of pool cleaned by Anita in a hour.
1 pool cleaned-----------------8 hour
x-----------------------------------1 hour

x=(1 pool cleaned * 1 hour) / 8 hour=1/8 portion cleaned.

2) we calculate the portion of pool cleaned by Chao  in a hour.
1 pool cleaned-----------------6 hour
x-----------------------------------1 hour

x=(1 pool cleaned * 1 hour) / 6 hour=1/6 portion cleaned.

3) we can suggest this equation:
x=number of hour

x(1/8+1/6)=1

(number of hour)*(portion of pool cleaned by Anita in a hour + portion of pool cleaned by Chao in a hour)=1 pool cleaned.

4) we solve this equation:
x(1/8 + 1/6 )=1

1/8+1/6=(3+4)/24=7/24
least common multiple (8,6)=24

x(7/24)=1
x=(1*24)/7
x=24/7≈3.43     (3 hours,  25 minutes, 43 seconds)

Answer:together they cleaned the pool in 3 hours, 25 minutes and 43 seconds. 


3 0
3 years ago
19. Evaluate: 5 x (8-4) ÷ 4 - 2
leva [86]

Answer:

3

Step-by-step explanation:

5\times (8-4)\div 4-2= \\\\\\5\times 4\div 4-2= \\\\\\20\div 4-2= \\\\\\5-2= \\\\\\\boxed{3}

Hope this helps!

6 0
3 years ago
HELP! IM GOING TO GET A ZERO!!!!
WITCHER [35]

Answer:

Step-by-step explanation:

This is a cube with side length 3.4 cm.

The standard formula for the volume of a cube of side length s is V = s³.

With s = 3.4 cm here, we get the volume

V = (3.4 cm)³  =  39.304 cm³, or approximately 39.3 cm³

4 0
3 years ago
Read 2 more answers
There are 100 people in a sport centre.
Arlecino [84]

We need to determinate who doesn't use anything, so first we must know the real number of who are practising: a person can do more things.

For doing this, is better use a three-circles graphic, but we try to do without it.

So

  • 16 pool + gym + track, and this number is sure
  • 38 gym + pool, but this number includes the people of 1st point. We must know who do only gym + pool: 38 - 16 = 22
  • 31 pool + track, this number also includes people of 1st point, so: only pool + track 31 - 16 = 15
  • 33 gym + track, this number also includes people of 1st point, so: only gym + track 33 - 16 = 17

now:

  • 67 gym, we must know who use only gym: 67 - 16 (gym + pool + track) - 22 (gym + pool) - 17 (gym + track) = 12
  • 62 pool, we must know who use only pool: 62 - 16 (gym + pool + track) - 22 (gym + pool) - 15 (pool + track) = 9
  • 56 track, we must know who use only track: 56 - 16 (gym + pool + track) - 15 (pool + track) - 17 (gym + track) = 8

now we must now who do some facility: let's sum all

16 + 22 + 15 + 17 + 12 + 9 + 8 = 99

99/100 practise something

So only 1/100 doesn't use nothing

The probability is 1%

7 0
3 years ago
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