I watch Khan Academy and in this video(https://www. khanacademy. org/math/pre-algebra/pre-algebra-ex ponents-radicals/pre-algebra-comput ing-scientific-notation/v/scientifi c-notation-example-2?modal=1) Sal said Scientific Notation have to be a * 10^n, and a have to be larger or same as 1, and It has to be less than 10. Then, Is 0.0036 x 10^4 is scientific notation?

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)