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irakobra [83]
3 years ago
11

Explain how estimation helps you place the decimal point when multiplying 3.9 x 5.3?

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
3 0
It helps when you count decimal places to line up the numbers
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Day one finding a weeb finish this sentence and I will give you brainiest
Hatshy [7]

Answer:

weeb -_-

Step-by-step explanation:

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3 years ago
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An architect makes a model of a new house. The model shows a tile patio in the backyard. In the​ model, each tile has length 1/4
Semmy [17]

Answer:

The answer is below

Step-by-step explanation:

The model is a tile with length 1/4 in. and width 1/6 in while the actual tile has length 1/6 ft. and width 1/9 ft.

Firstly we have to convert the model length and width from inches to feet.

1 feet = 12 inches

model length =  1/4 in. = 1/4 in * (1/12) ft./in = 1/48 ft.

model width =  1/6 in. = 1/6 in * (1/12) ft./in = 1/72 ft.

Therefore:

Ratio of model length to actual length of tile = (1/48 ft.) / (1/6 ft.) = 1 / 8

Ratio of model length to actual length of tile = (1/72 ft.) / (1/9 ft.) = 1 / 8

Area of model tile = length * width = 1/48 ft. * 1/72 ft. = 1/3456 ft²

Area of actual tile = length * width = 1/6 ft. * 1/9 ft. = 1/54 ft²

Ratio of model area to actual area of tile = (1/3456 ft²) / (1/54 ft²) = 1 / 64

6 0
3 years ago
Maya drew one highlighter at a time from a container of highlighters. After each draw, the highlighter was replaced,
jonny [76]

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I think it's red

Sorry dont understand the question

8 0
3 years ago
Choose the benchmark that 3-7/12<br> closest to<br> 3-1/2<br> 2.<br> 3
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Answer:

3

Step-by-step explanation:

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3 years ago
What is the period of y = 8 cos (5pie x + 3pie/2)-9<br> Give an exact value. Units
zzz [600]

\\ \rm\Rrightarrow y=Acos(Bx+C)+D

  • This is the general formula and the period is 2π/B

Now our given function

\\ \rm\Rrightarrow y=8cos\left(5\pi x+\dfrac{3\pi}{2}\right)-9

On comparing we get

  • A=8
  • B=5π
  • C=3π/2
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Period:-

\\ \rm\Rrightarrow \dfrac{2\pi}{B}

\\ \rm\Rrightarrow \dfrac{2\pi}{5\pi}

\\ \rm\Rrightarrow \dfrac{2}{5}

3 0
2 years ago
Read 2 more answers
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