All categories

3 years ago

What type of charge does a proton in an atom hold

1 answer:

5 0

Proton—positive; electron—negative; neutron—no charge. The charge on the proton and electron are exactly the same size but opposite. The same number of protons and electrons exactly cancel one another in a neutral atom.

You might be interested in

Solve this quadratic equation by completing the square. x^2+4x=15

AlekseyPX

Answer:

x = -2 ±sqrt( 19)

Step-by-step explanation:

x^2 + 4x = 15

Take the coefficient of x

Divide by 2

4/2 =2

Square it

2^2 = 4

Add it to each side

x^2 + 4x+4 = 15+4

(x+2)^2 = 19

Take the square root of each side

sqrt( (x+2)^2) =±sqrt( 19)

x+2 = ±sqrt( 19)

Subtract 2 from each side

x+2-2 = -2 ±sqrt( 19)

x = -2 ±sqrt( 19)

7 0

3 years ago

WILL GIVE BRAINLIEST

oee [108]

$f(x) = x^2 +3 \\\\\text{Write f(x) as}~ y = x^2 +3 \\\\\text{Replace x with y and solve for y}\\\\x = y^2+3\\\\\implies y^2 = x-3\\\\\implies y=\pm\sqrt{x-3}\\\\\implies f^{-1}(x) = \pm\sqrt{x-3}\\\\\text{This is the inverse of f(x).}$

5 0

2 years ago

The hypotenuse of a right triangle is 10inches long. The longer leg is 2 inches longer than the shorter led. Find the side lengt

lbvjy [14]

By Pytogaros' Theorem,(however you spell it)
${a}^{2} = {b}^{2} + {c}^{2}$
Let the length of shorter leg be x.So the longer leg will be x+2
${10 }^{2} = {x}^{2} + {(x + 2)}^{2}$
so you end up with

0=2x^2+4x-96

Solve for x which gives you -8 and 6. So the shorter leg has length of 6 and longer leg has length of 8

5 0

4 years ago

How express the ratio in simplest form: 85 out of 102

kodGreya [7K]

5:6
The fraction 85/102 goes to 5/6 so it is 5:6 or 5/6...

3 0

3 years ago

Read 2 more answers

What is the standard form equation of the line shown below? (1 point)

kaheart [24]

Answer:

Choice 1. -3x + 2y = 5.

Step-by-step explanation:

The slope of the line = y2-y1/x2-x1

= (4 - 1) / (1 - (-1))

= 3/2.

To find the equation of the line we use the point-slope form of the equation of a line:

y - y1 = m(x - x1) where m = slope and (x1, y1) is a point on the line. So using m = 3/2 and the point (1, 4):

y - 4 = 3/2(x - 1)

y - 4 = 3/2 x - 3/2

Multiply through by 2:

2y - 8 = 3x - 3

-3x + 2y = -3 + 8

-3x + 2y = 5 (answer).

6 0

4 years ago