A calcium ion has 20 protons and 18 electrons. Each proton has a + 1 charge and each electron has a - 1 charge. What is the charge of the calcium ion?

What are the next three terms in these 2 sequences? 1. 3, 8, 23, 68 2. 2, 6, 18

What is the length of PC? Enter your answer as a decimal. Round your final answer to the nearest hundredth.

There are 491 people attending an ice hockey games that people are seated in sections with 30 seats in each section how many sections are filled how many people are in the section that is not filled

Follow the steps to solve the equation square root 2x-7 - square root 3x - 12 = 0. First, isolate a radical and then square both sides. Choose the resulting equation O 2x - 7 - 3x - 12 = 0 o 2x - 7 = -3x - 12 O 2x - 7 = 3x - 12

Solve the equation by completing the sqaure. if necessary round to the nearest hundreth x^2+4x=1

The width of a rectangle is 12cm less than the length. The perimeter is 156cm. Find the width and length

Given the function f (x) = 6|x - 2| + 3, for what values of x is f (x) = 39?

The chess club has 16 members and gains a new member every month. the film club has 4 members and gains 4 new members every month. write and solve a system of equations to find when the number of members in both clubs will be equal. a. 2 months b.

How do you solve a distributive equation

Leslie makes $17,000 per year. She is paid weekly. What is the amount of her weekly paycheck? 354.17 326.92 708.33 340.00