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Katyanochek1 [597]
3 years ago
8

What is the distance between the points (21, 16) and (9, 11)?

Mathematics
1 answer:
Colt1911 [192]3 years ago
3 0
The distance would be 12,5
but if its the 21,16 going to 9,11 it would most likely end up being -12,-5
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Does the expression d - 12 have a greater value when d = 42 or when d = 46?
Ivenika [448]
When d=46 the expression has a greater value.
5 0
3 years ago
It takes 4 people 2 days to build a patio. How long will it take 2 people, working at the same rate, to buid the patio?
kifflom [539]

Answer:

4 days

Step-by-step explanation:

The patio takes 4 people 2 days, so that is 4×2. To get this for 2 people, it's 2×4. This means it takes 4 days.

Think about it, for half the people, it should take double the time.

4 0
3 years ago
A, B & C lie on a straight line.
slamgirl [31]

Answer:

x=38

Step-by-step explanation:

6 0
2 years ago
Nadia says the hypotenuse of the right triangle has a length of 73 because the Pythagorean theorem states that (28+45)squared eq
Setler79 [48]

Answer: Her solution is incorrect. The hypotenuse is 53 units

Step-by-step explanation: The error occurred when she quoted the Pythagorean theorem. She added up both sides and squared them and made the answer equal to the square of the hypotenuse. She was supposed to have squared them first, before adding up.

The Pythagorean (or Pythagoras) theorem states that the sum of the squares of two sides of a right angled triangle equals the square of the hypotenuse of the triangle. That is, in triangle ABC, if the hypotenuse is given as line AC, the Pythagoras theorem states that

AC^2 = AB^2 + BC^2

Where AC is the hypotenuse and AB and BC are the other two sides.

In Nadia’s solution, if the hypotenuse is given as 73, and the other two sides are 28 and 45, then the Pythagorean theorem properly expressed would be as follows;

73^2 = 28^2 + 45^2

5329 = 784 + 2025

5329 ≠ 2809

As we have determined, writing out the expression as

73^2 = (28 + 45)^2 is very incorrect as this is not the Pythagorean theorem and of course, the triangle cannot have 73 as its hypotenuse as we have determined by properly writing out the Pythagorean theorem.

The correct solution is as follows;

AC^2 = AB^2 + BC^2

AC^2 = 28^2 + 45^2

AC^2 = 784 + 2025

AC^2 = 2809

Add the square root sign to both sides of the equation

AC = 53

Therefore, the hypotenuse is 53 units

4 0
3 years ago
Read 2 more answers
Please help it would be greatly appreciated:)
mixer [17]

Answer:

I really don't know but can u help with mine-_-

6 0
3 years ago
Read 2 more answers
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