Answer: 800.
Step-by-step explanation: Round them both to the nearest ten. That is 40x20.
We don’t know because you didn’t tell us how many cookies she put in.
Answer: B. 5root(3)
Use Pythagorean’s theorem to solve this problem. We know one side and the hypotenuse, so we can solve for the other side.
a² + b²= c²
5² + b² = 10² (plug in 5 for one side, and 10 for the hypotenuse)
25 + b² = 100 (square 5 and 25)
b² = 75 (subtract 75 from both sides)
b=√(75) (take the square root of both sides)
b=√(25*3) (factor out a square)
b=5√(3) (simplify radical)
Answer: If you want me to simplify, the answer is -4y - 7.
Step-by-step explanation: Just add the like terms (-4 and -3) to get -7. Then you have the y, which gives you -4y - 7.