Answer:
x = 40
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² + 30² = 50²
x² + 900 = 2500 ( subtract 900 from both sides )
x² = 1600 ( take the square root of both sides )
x = 
= 40
Answer:
Julie and her 2 sisters want to buy a new videogame, it costs $20, if their grandmother gives them $3.20 to buy it, how much will each have to pay?
Step-by-step explanation:
When you have a problem like this you just have to thing on a reason to multiply by a fraction and a withdrawal from the total, if you are multiplying by a fraction, that means you are dividing money, so thats why we put julie and her sisters as subjects, and her grandma givin them money is to withdraw from the total amount those $3.20
Answer:
Quadrilateral MNOP is a rectangle.
Step-by-step explanation:
Answer:
88.66
Step-by-step explanation:
14.3 * 6.2
88.66
Answer:
b = -1
Step-by-step explanation:
3(-4b+1) = 15
multiply: -12b + 3 = 15
subtract 3 from 15: -12b = 12
divide: b = -1
