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oksian1 [2.3K]
3 years ago
7

A school has 8 periods at day each of 45 minutes duration. How long would each period be ? The school has 6 periods a day? (assu

ming the number of school hours to be the same)​
Mathematics
2 answers:
taurus [48]3 years ago
6 0

<u>The duration of each period would be 60 minutes</u>.

Justification:

Let the duration of each period be x.

Here the number of periods and the duration of periods are in<u> inverse proportion</u>.

∴ 8/6 = x/45

6x = 360

x = 360/6

x = 60.

PIT_PIT [208]3 years ago
3 0

Answer:

The school has 6 periods a day needs 1 hour for each.

Step-by-step explanation:

8 period =45×8=360 minute

6 perod =360/6=60minute

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60/1 in a equivalent ratio
Elena-2011 [213]
60 /1 = 120 /2 = 180 /3

hope it helps
8 0
3 years ago
Read 2 more answers
This problem illustrates the limit derivation of a Poisson distribution from Binomial distributions. Suppose an average of 6 arr
expeople1 [14]

Answer:

I need help with mathematics please

7 0
2 years ago
May someone help me with these 2 again
cestrela7 [59]

Answer:

1. 180

2. x = 31

Step-by-step explanation:

1. the sum of the interior angles of every triangle is always 180

2. using what we know from problem 1, we can create an equation:

x + 10 + 2x - 5 + 2x + 20 = 180

add like terms: 5x + 25 = 180

subtract 25 from both sides: 5x = 155

divide both sides by 5: x = 31

3 0
2 years ago
Given triangle ABC, A=105°, a=10cm, b=7cm, find B,C and c.
Whitepunk [10]

The value of the side c will be 5.56 cm and angle C is 32.49° and angle B is 42.51°.

<h3>What is law of cosine?</h3>

Let there is a triangle ABC such that |AB| = a units, |AC| = b units, and |BC| = c units and the internal angle A is of θ degrees, then we have:

a² + b² – 2ab cos C = c²

Given triangle ABC, A = 105°, a = 10 cm, b = 7 cm.

Then we have

7² + c² – (2 · 7 · c) cos 105° = 10²

c² + 3.62c – 51 = 0

On solving, we have

c = 5.56

Then the angle C will be

10² + 7² – 2 · 7 · 10 · cos C = 5.56²

                149 – 140 cos C = 30.91

                                 cos C = 0.8435

                                        C = 32.49°

We know that

       ∠A + ∠B + ∠C = 180°

105° + ∠B + 32.49° = 180°

                         ∠B = 42.51°

Learn more about law of cosines here:

brainly.com/question/17289163

#SPJ1

4 0
1 year ago
To the girl who got it right is the one in the comments :D
Mama L [17]
Dang that’s nice free points thank you
3 0
2 years ago
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