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stira [4]
3 years ago
14

Find the distance between A and B.

Mathematics
1 answer:
Papessa [141]3 years ago
7 0

Answer:

The result is d = 2\sqrt{5} units.

Step-by-step explanation:

The coordinates for A and B:

A = (-2, 0)

B = (2, 2)

-To find the distance between A and B, you need the distance formula:

d = \sqrt{(x_{2} - x_{1})^2 + (y_{2}-y_{1})^2} Where the first coordinate is (x_{1},y_{1}) and  the second coordinate is (x_{2}, y_{2}).

-Use the coordinates A and B for the equation:

d = \sqrt{(2+2)^2 + (2-0)^2}

-Then, you solve the equation:

d = \sqrt{(2+2)^2 + (2-0)^2}

d = \sqrt{(4)^2 + (2)^2}

d = \sqrt{16 + 4}

d = \sqrt{20}

d = 2\sqrt{5}

So, therefore the distance is 2\sqrt{5} units.

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3 0
3 years ago
Please help! easy math!
marta [7]

Answer:

y=(0.1)x and y=2(1/4)x represent exponential decay

the rest all are an equation used for exponential growth

8 0
3 years ago
You pay sales tax on your purchases at the rate of 0.07. What fraction of your money is​ this? Remember to reduce your fraction
Gemiola [76]

Answer:

This is \frac{7}{100} of your money.

Step-by-step explanation:

We have a decimal number, and we want the answer to be a fraction. To transform a decimal number into a fraction, we multiply both the numerator and the denominator by 10 until none of them have decimal parts. So

0.07\times \frac{10}{10} = \frac{0.7}{10}\times \frac{10}{10} = \frac{7}{100}

This is \frac{7}{100} of your money.

3 0
3 years ago
For the sets A = {a,b} and B = {a,b,c}, determine Ax B, BX A, A2 = Ax A and B2 = BxB.
denis23 [38]

Answer: Hello!

the cross product between sets is defined as:

if A = {a,b,c} and B = {1,2,3)

then

AxB =  \left[\begin{array}{ccc}a\\b\\c\end{array}\right]x\left[\begin{array}{ccc}1&2&3\end{array}\right]   =\left[\begin{array}{ccc}a1&a2&a3\\b1&b2&b3\\b1&b2&b3\end{array}\right]

where the A took the place of the columns, and B for the files.

then if our sets are A = {a,b} and B = {a,b,c)

a) AxB

AxB = \left[\begin{array}{ccc}aa&ab&ac\\ba&bb&bc\end{array}\right]

b) BxA

BxA = \left[\begin{array}{ccc}aa&ab\\ba&bb\\ca&cb\end{array}\right]

c) AxA

AxA = \left[\begin{array}{ccc}aa&ab\\ba&bb\end{array}\right]

d) BxB

BxB = \left[\begin{array}{ccc}aa&ab&ac\\ba&bb&bc\\ca&cb&cc\end{array}\right]

Hope it helps, i know that is kinda hard work with this kind of operations, i tried to make a kinda of map in the first part so you can replace the values of A and B and do the multiplications by yourself, if you have troubles don't doubt of asking.

7 0
3 years ago
Pls help I will give brainless
tamaranim1 [39]

Answer:

the answer is D. 38.15

Step-by-step explanation:

the lunch meat is 5.50 for 5lbs. She only needs 2 1/2 lbs so you would just divide 5.50 by 2 (because 2 1/2 is half of 5). for the soft drinks, it is 9.99 for 3 so each one 3.33 (divide 9.99 by 3). When you add two more to get five cases in total, you get 16.65 (because 9.99 plus 3.33 plus 3.33 = 16.65). the lunch meat is 4.25 each and you need 3 so you just multiply 4.25 by 3. the snack mix bags are 2 for 1.50 each. that means that two is 3.00. you need four so you just do 3.00+3.00 which equals 6. when you add these totals together, you get 38.15

3 0
3 years ago
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