The amount of water surface area on Earth is 140,000,000 square miles. How is this number written in scientific notation? 1.4 x 10⁸ C. 14 x 10⁷

14 x 10⁸ D. 1.4 x 10⁹

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.