The product of a number and 2 is 20 less than the product of the number and - 3. What is the number?

One of the astronaut brought 1 kg of his gold and 1 kg of his cotton wool to the moon. When he arrived at the moon, try to guess how much kg of his gold and his cotton wool? Give reason for your answer.

Which of these best describes Earth's mantle? Most dense layer, consists of the outer and inner parts Thinnest under the oceans and thickest under continents Middle layer, density increases with depth as pressure increases Least dense layer overall,

Prove this identity using the product-to-sum identity for sine: sin^2x = (1-cos (2x)) / 2

In a circle graph. what does each sector represent,

The sum of two times a number H and three is 15

Nia guesses that there are 120 nickels in a jar, but there are actually 125. What was her percent error.

Is 20 miles every 3 hours a unit rate

Plot the fraction 7/12 on the number line. is 7/12 closer to 0, 1/2 or 1?

Which of the following steps would be most useful in proving that a circle with a radius of 3 inches is similar to a circle with a radius of 2 feet?

Write the fraction in simplest form 25/100