All categories

3 years ago

What is the overall charge of a group with 4 protons and 0 electrons?

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

4 0

Answer:

it has +4 positive charge because it gives it's 4 electron to another element this is reason

You might be interested in

Greg swam 4 kilometers against the current in the same amount of time it took him to swim 16 kilometers with the current. The ra

ad-work [718]

Answer:

5 kmph

Step-by-step explanation:

Given: Greg swam 4 kilometers against the current.

Greg swam 16 kilometers with the current.

Rate of the current was 3kmph.

Lets assume the speed of greg swimming with no current be "x".

∴ Speed of swimming against current= $(x-3)\ kmph$

Speed of swimming with current= $(x+3)\ kmph$

As given, it took same amount of time to swim both with current and against current.

∴ Forming an equation to find the value of x, which is speed of greg swimming with no current.

We know, $Time= \frac{Distance}{Speed}$

⇒ $\frac{4}{(x-3)} = \frac{16}{(x+3)}$

Multiplying both side by (x+3) and (x-3)

⇒ $4\times (x+3)= 16\times (x-3)$

Using distributive property of multiplication.

⇒ $4x+12= 16x-48$

Subtracting both side by 4x and adding by 48.

⇒ $60= 12x$

Dividing both side by 12

⇒ $x= \frac{60}{12} = 5\ kmph$

Hence, Greg can swim at the rate of 5kmph with no current.

7 0

3 years ago

Help me on this question, I'll give brainlist for the correct answer.

german

Answer:

Step-by-step explanation:

The first expression has value 12

The second expression has value -6

The third expression has value

And finally the forth expression has value 1.14

((13 + 7) = 20

(12+4) = 16

16/ (20 - 16)= 16 / 4

16/4 = 4

8 0

3 years ago

Read 2 more answers

Whats the value of x

Gnesinka [82]

Answer:

i think 64?

Step-by-step explanation:

its supposed to be the same on the bottom, right?

3 0

3 years ago

Read 2 more answers

TIMED TEST??????!?!?!?!?!?

Morgarella [4.7K]

Answer:

Its bad to cheat on a test my dude

Step-by-step explanation:

3 0

3 years ago

What is the slant height x of this square pyramid?

Ksenya-84 [330]

Since this is a square pyramid, the length of all the sides going up towards the top point of the pyramid (the apex) are all 4m. The triangular faces of the square pyramid are all equilateral triangles because we are given that one of the angles is 60°.

Since we are just looking for x, we can ignore all the other sides of the square pyramid except for the front face with x and 60°. That front face is an equilateral triangle. We see x splitting the equilateral triangle into two smaller triangles. These smaller triangles are all special 30-60-90 triangles (see picture), so you can use your rules for the side lengths of the triangles to figure out the length of x.

In a 30-60-90 triangle, the sides are in a 1:2:√3 ratio for the short leg to the long leg to the hypotenuse. That means the long leg is the short leg times 2 and the hypotenuse is the short leg times √3.

We know the hypotenuse is 4m and we are trying to find the long leg, x. We know that the ratio of the hypotenuse to the long leg is √3:2 and we can cross multiply and solve for x, then put x into simplest radical form:
$\frac{hypotenuse}{long \: leg} = \frac{ \sqrt{3}}{2} \\
 \frac{4}{x} = \frac{ \sqrt{3}}{2} \\
8 = x\sqrt{3}\\
x = \frac{8}{\sqrt{3}} \\ 
x = \frac{8}{\sqrt{3}} \times \frac{\sqrt{3}}{\sqrt{3}}\\
x= \frac{8\sqrt{3}}{3}$

Your final answer is $x= \frac{8\sqrt{3}}{3}$ .

7 0

3 years ago

Read 2 more answers