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fenix001 [56]
3 years ago
8

12a + 5 minus 8a = negative 1

Mathematics
1 answer:
Rudiy273 years ago
6 0

Answer:

a is equal to 0.3

Step-by-step explanation:

12a + 5 -8a =-1

(collect like terms)

12a + 8a= -1 -5

20a = -6

a= -6÷20

a= 3÷ 10

a= 0.3

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a tight roll of paper, as delivered to the printer, is 60cm in diameter, and the paper is wound on to a wooden cylinder 8cm in d
Alekssandra [29.7K]

The area of the paper is the amount of space it occupies.

The length of papers around the edge is 1607680 cm

The given parameters are:

\mathbf{d_1 = 60cm}

\mathbf{d_2 = 60cm + 8cm = 68cm}

The area of the circle head is:

\mathbf{Area = \pi \frac{d^2}{4}}

So, we have:

\mathbf{Area = \pi \frac{d_2^2 - d_1^2}{4}}

Substitute known values

\mathbf{Area = \pi \frac{68^2 - 60^2}{4}}

\mathbf{Area = \pi \frac{1024}{4}}

\mathbf{Area = 256\pi}

The length of the paper is then calculated as:

\mathbf{Length = \frac{Area}{0.0005}}

This gives

\mathbf{Length = \frac{256\pi}{0.0005}}

\mathbf{Length = \frac{256 \times 3.14}{0.0005}}

\mathbf{Length = 1607680}

Hence, the length of papers around the edge is 1607680 cm

Read more about areas at:

brainly.com/question/2264643

4 0
3 years ago
Read 2 more answers
Trucks that travel on highways have to stop at various locations to be weighed and inspected for safe brakes and light systems.
IrinaVladis [17]

Answer:

The reuired probability is 0.756

Step-by-step explanation:

Let the number of trucks be 'N'

1) Trucks on interstate highway N'= 76% of N =0.76N

2) Truck on intra-state highway N''= 24% of N = 0.24N

i) Number of trucks flagged on intrastate highway  = 3.4% of N'' = \frac{3.4}{100}\times 0.24N=0.00816N

ii)  Number of trucks flagged on interstate highway  = 0.7% of N' = \frac{0.7}{100}\times 0.76N=0.00532N

Part a)

The probability that the truck is an interstate truck and is not flagged for safety is P(E)=P_{1}\times (1-P_{2})

where

P_{1} is the probability that the truck chosen is on interstate

P_{2} is the probability that the truck chosen on interstate is flagged

\therefore P(E)=0.76\times (1-0.00532)=0.756

5 0
3 years ago
» Solve for r.<br> 8r = 40<br> r=
Semmy [17]
The answer is ...

R = 5

8(5) = 40
5 0
4 years ago
Read 2 more answers
Please help me!
seraphim [82]

Answer:

7.5%

Step-by-step explanation:

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2 years ago
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a class of 24 students was asked to identify a team sport in which they have participated their responses are shown in the line
Alona [7]

Answer:

a. no information provided

b. 24 students as mentioned

c. the problem is... there isn't any response given to compare with the students surveyed.

Step-by-step explanation:

a class of 24 students was asked to identify a team sport in which they have participated their responses are shown in the line plot

a. how many total responses

b. how many students surveyed

c. give a possible explanation as to why the answers to parts a and b are different

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3 years ago
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