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lidiya [134]
1 year ago
12

Express ratio 3.5:14 as 1:n

Mathematics
1 answer:
Luba_88 [7]1 year ago
3 0

Answer:

1 : 4

Step-by-step explanation:

3.5 : 14 ( divide both parts by 3.5 )

= 1 : 4

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2000:$5 2015:$6.5 what is the percent change
Julli [10]

Answer:

30%

Step-by-step explanation:

% of change = 100 x (6.5-5)/  | 5 |

7 0
2 years ago
1. What is the perimeter of the figure below. Simplify.<br> 4x^3-5x 2x^3+6x 6x^3+x
____ [38]

Answer:

12x^3+2x

Step-by-step explanation:

The perimeter of a polygon is equal to the sum of its sides.

The sides in the triangle shown have lengths 2x^3+6x, 4x^3-5x, and 6x^3+x in no specific order.

Since its perimeter is given by the sum of its sides, the perimeter is equal to:

2x^3+6x+4x^3-5x+6x^3+x

Combine like terms:

\boxed{12x^3+2x}

6 0
3 years ago
a water tank in the shape of a right rectanglar prism is 11 feet deep. the top of the water tank has an area of 220 square feet.
Simora [160]
 The Answer is 2420 ft^3
7 0
3 years ago
cindy is training for a race. she ran 3/5 mile each day for 7 days. how many miles did she ran in those 7 days
anyanavicka [17]
Multiply the two numbers

3/5*7/1= 21/5

21/5= 4 1/5 miles

Answer: 4 1/5 miles
3 0
2 years ago
The average time an individual reads online national news reports is 49 minutes. Assume the standard deviation is 16 minutes and
Olin [163]

Answer:

0.118 is the probability someone will spend no more than 30 minutes reading online national news reports.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 49 minutes

Standard Deviation, σ = 16 minutes

We are given that the distribution of  time an individual reads is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(no more than 30 minutes)

P( x \leq 610) = P( z \leq \displaystyle\frac{30 - 49}{16}) = P(z \leq -1.1875)

Calculation the value from standard normal z table, we have,  

P(x \leq 30) = 0.118 = 11.8\%

0.118 is the probability someone will spend no more than 30 minutes reading online national news reports.

3 0
2 years ago
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