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yuradex [85]
3 years ago
5

The distance from a to b is 143 mi., and from b to c on another road, 57 mi. The distance from a to d is 143 mi., and from d to

e on another road is 57 mi. Compare the distance from a to c by way of b with the distance from a to e by way of d.
Also if you know, what principle does it use?
Mathematics
1 answer:
bulgar [2K]3 years ago
8 0

Answer:56

Step-by-step explanation:56

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when 200 apples are sold at Rs 1.50 each there will be rupees hundred loss how many apples should be sold for rupees 150 to gain
Lera25 [3.4K]

Answer:

Step-by-step explanation:

Sales price of 200 apples = 300

At this price, there was loss of Rs. 100

Means the cost of the apples was

300 + 100 = Rs. 400

To earn Rs. 100, they should have been sold for Rs. 500

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3 years ago
Simplify -12x^4/x^4+8x^5 brainly <br> What is x
yaroslaw [1]

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-12+8x^5

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Which best explains whether a triangle with side lengths 5 cm, 13 cm, and 12 cm, is a right triangle?
Llana [10]
The Pythagorean Proposition can help you explain this:
{a}^{2}  =  {b}^{2}  +  {c}^{2}  \\ {13}^{2}  =  {5}^{2}  +  {12}^{2}  \\ 169 = 25 + 144
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Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students
Nezavi [6.7K]

Answer: A. 85.7

Step-by-step explanation:

Given : Two sections of a class took the same quiz.

Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90.

We know that  , \text{Mean}=\dfrac{\text{Sum of observations}}{\text{No. of observations}}

Then , for section A :

\text{Mean score }=\dfrac{\text{Sum of scores in sec A}}{\text{No. of students}}

\Rightarrow\ 80=\dfrac{\text{Sum of scores in sec A}}{15}\\\\\Rightarrow\ \text{Sum of scores in sec A}=80\times15=1200

Similarly in Section B, \text{Sum of scores in sec B}=90\times20=1800

Total scores = Sum of scores in sec A+Sum of scores in sec B

=1200+1800=3000

Total students = Students in sec A +Students in sec B

=15+20=35

Now , the mean score for all of the students on the quiz =\dfrac{\text{Total score}}{\text{Total students}}

=\dfrac{3000}{35}=85.7142857143\approx85.7

Hence, the approximate mean score for all of the students on the quiz = 85.7

Thus , the correct answer is option A. 85.7.

7 0
3 years ago
Put the steps of solving the equation in order from first to last.<br> 2x + 1 = -1
Alborosie

Answer:

x = 1

Step-by-step explanation:

2x + 1 = -1

2x = -1 - 1

2x = -2

x = -2 ÷ -2

x = 1

3 0
3 years ago
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