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4 years ago

How many hours are in 270 minutes

Mathematics

2 answers:

soldi70 [24.7K]4 years ago

7 0

In 270 minutes there are 4.5 hours

liubo4ka [24]4 years ago

5 0

2.5 hours and you’re welcome

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Solve 1.8c = 7.5 for c.

igor_vitrenko [27]

$1.8c=7.5 \\\\ c=\frac{7.5}{1.8} \\\\ c=\frac{5\frac{5}{10}}{1\frac{8}{10}}=\frac{5\frac{1}{2}}{1\frac{4}{5}} \\\\ c=\frac{\frac{11}{2}}{\frac{9}{4}}= \frac{11}{2}*\frac{4}{9} \\\\ \boxed{c=\frac{22}{9}}$

8 0

4 years ago

Read 2 more answers

I need help with this question

nikdorinn [45]

The area of each triangular face is
.. A = (1/2)*b*h
.. Aside = (1/2)*(6 cm)*(5 cm) = 15 cm^2

The area of the triangular base is
.. Abase = ((√3)/4)*s^2 = (√3)/4*(6 cm)^2 = 9√3 cm^2

The total surface area is the base area plus the area of the three sides.
.. Atotal = Abase + 3*Aside
.. = 9√3 cm^2 +3*15 cm^2
.. = (45 +9√3) cm^2
.. ≈ 60.6 cm^2

Actually, there's an error in the picture. The height of the side should be 4, and the length of the edge should be 5. Making that adjustment, the total area is 51.6 cm^2.

It is hard to tell what is intended. Not all answers are showing, so we can't "reverse-engineer" the problem from the answers.

7 0

4 years ago

convert reapeating decimal where all numbers do not repeat(expert) explain! .13 (3 has a line above it)

aleksley [76]

Answer:

see explanation

Step-by-step explanation:

The bar above the 3 indicates the 3 is being repeated, that is

0.13333....

We require to make 2 equations with the repeating 3 after the decimal point.

let x = 0.13333... , then multiply both sides by 10 then 100

10x = 1.3333 ← equation with repeating 3 after the decimal point

100x = 13.3333 ← second equation with repeated 3 after the decimal point

Subtracting the equations eliminates the repeated 3, that is

100x - 10x = 13.333 - 1.333

90x = 12 ( divide both sides by 90 )

x = $\frac{12}{90}$ ← divide numerator/denominator by 6, hence

0.1333... = $\frac{2}{15}$

5 0

3 years ago

Read 2 more answers

Suppose that a die-hardly-ever battery has an exponential time-to-failure distribution with a mean of 48 months. at 60 months, t

mel-nik [20]

Since the time to failure distribution is exponential, the distribution is F (n) = 1 – e ^ (-x/48)

The probability of failure between months 60 and 72 is the same as the probability that the battery will fail in 12 months, since the exponential distribution is memoryless F (12) = 0.221

7 0

4 years ago

A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 72 specimens and counts the number of

Oliga [24]

Answer:

99% Confidence interval: (50.9,61.3)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = 56.1