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4 years ago

Decrease 18 tonnes by 30%

Mathematics

1 answer:

Leviafan [203]4 years ago

5 0

10% of 18 tonnes = 1.8 tonnes
30% of 18 tonnes = 5.4 tonnes
18 - 5.4 tonnes = 12.6 tonnes

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Find the measure of one interior angle for the following regular polygon

givi [52]

Answer:

120

Step-by-step explanation:

All the interior angles in a regular hexagon are 120 degrees.

7 0

3 years ago

Let X denote the time in minutes (rounded to the nearest half minute) for a blood sample to be taken. The probability mass funct

Basile [38]

This question is incomplete, the complete question is;

Let X denote the time in minutes (rounded to the nearest half minute) for a blood sample to be taken. The probability mass function for X is:

x 0 0.5 1 1.5 2 2.5

f(x) 0.1 0.2 0.3 0.2 0.1 0.1

determine;

a) P( X < 2.5 )

B) P( 0.75 < X ≤ 1.5 )

Answer:

a) P( X < 2.5 ) = 0.9

b) P( 0.75 < X ≤ 1.5 ) = 0.5

Step-by-step explanation:

Given the data in the question;

The probability mass function for X is:

x 0 0.5 1 1.5 2 2.5

f(x) 0.1 0.2 0.3 0.2 0.1 0.1

a) P( X < 2.5 )

P( X < 2.5 ) = p[ x = 0 ] + p[ x = 0.5 ] + p[ x = 1 ] + p[ x = 1.5 ] + p[ x = 2 ]

P( X < 2.5 ) = 0.1 + 0.2 + 0.3 + 0.2 + 0.1

P( X < 2.5 ) = 0.9

b) P( 0.75 < X ≤ 1.5 )

P( 0.75 < X ≤ 1.5 ) = p[ x = 1 ] + p[ x = 1.5 ]

P( 0.75 < X ≤ 1.5 ) = 0.3 + 0.2

P( 0.75 < X ≤ 1.5 ) = 0.5

3 0

3 years ago

What is the common ratio of the geometric sequence: -1/12.-1/2,-3,18,...

Minchanka [31]

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Check:
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= $-\frac{1}{12}$ × 6
= $-\frac{1}{2}$

= $-\frac{1}{2}$ ÷ $\frac{1}{6}$
= $- \frac{1}{2}$ × 6
=-3

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3 years ago

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timurjin [86]

Answer:

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Step-by-step explanation:

15 liters a day ÷ 5 days= 3 liters a day

21÷3=7

if she just wanted to make 6 more to make 21, then it would take 2 days.

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3 years ago

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alisha [4.7K]

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