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Leya [2.2K]
1 year ago
8

Jack's backyard has a grassy lawn, a deck, and a pool. the pool takes up 1/5 for the yard, the deck takes up 1/4 of the yard the

rest of the yard is left for grass. what fraction of the backyard does the grassy lawn take up?
(sorry my sister asked me for help and i have no clue what it's talking about)
Mathematics
1 answer:
Tatiana [17]1 year ago
5 0

Answer:

11/20

Step-by-step explanation:

The backyard is 1 entire area.

The pool is 1/5 of the area.

The deck is 1/4 of the area.

The grass is the remaining area.

The area of the grass is the entire area of the backyard minus the areas of the pool and the deck.

First, we add the areas of the pool and the deck.

1/4 + 1/5 = 5/20 + 4/20 = 9/20

The combined area of the pool and deck is 9/20 of the area of the backyard.

Now we subtract the combined area of the pool and deck from the entire area of the backyard.

1 - 9/20 = 20/20 - 9/20 = 11/20

The grassy area is 11/20 of the backyard.

Answer: 11/20

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Step-by-step explanation:

Since there are 3 planes that arrive in a random order, there is a 1 in 3 chance that the plane from Chicago will arrive first. Hope this helps!

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Step-by-step explanation:

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2 years ago
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3 years ago
Beth left school driving toward the lake one hour before tim. tim drove in the opposite direction going 6 mph slower than beth f
m_a_m_a [10]

Beth's speed was 60 mph.

<h3>What is speed?</h3>
  • The speed (commonly referred to as v) of an object in everyday use and kinematics is the magnitude of the change in its position over time or the magnitude of the change in its position per unit of time; it is thus a scalar quantity.
  • The distance traveled by an object in a time interval is divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.
  • Velocity is not the same as speed.

To find what was Beth's speed:

Beth's data:

  • time = 2 hrs; rate = r mph; distance = r×t = 2r miles

Tim's data:

  • time = 1 hr; rate = r-6 mph; distance = r-6 miles

Equation:

  • distance + distance = 174 miles

So,

  • 2r + r - 6 = 174
  • 3r - 6 = 174
  • 3r = 180
  • r = 60 mph (Beth's rate)
  • r-6 = 54 mph (Tims's rate)

Therefore, Beth's speed was 60 mph.

Know more about speed here:

brainly.com/question/4931057

#SPJ4

3 0
1 year ago
Q3.
umka2103 [35]

Answer:

8.48%

Step-by-step explanation:

Bill's weight decreases from 64.8 kg to 59.3 kg.

We need to find the percentage decrease in Bill's weight. It can be calculated as follows :

\%=\dfrac{64.8 -59.3 }{64.8 }\times 100\\\\=8.48\%

So, the required decrease in percentage is 8.48%.

3 0
3 years ago
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