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labwork [276]
3 years ago
14

A fair coin is tossed 4 times. find the probability of obtaining exactly 2 heads

Mathematics
1 answer:
algol133 years ago
8 0
50% 
i think
tell me if i got it right...
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the probability of rolling a number less than 3 on a number cube is 2/6. Jennifer rolls 60 times. how many times should Jennifer
saveliy_v [14]

Answer:23

Step-by-step explanation:

7 0
3 years ago
What is the first step in solving quadratic equations by finding square roots? a. give the positive and negative answer C. b. is
tangare [24]

The first step in solving quadratic equations by finding square roots is; C:square root both sides to isolate x

<h3>How to solve quadratic equations?</h3>

To answer this question, we will take an example of a quadratic equation that we need to find the square root as;

x² = 36

Now, to get the roots which are the values of x, we will first have to take the square root of both sides to Isolate x. Thus;

√x² = √36

x = ±6

Read more about quadratic equations at; brainly.com/question/1214333

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6 0
2 years ago
What expression is equivalent to (4y^2-3) (4y+3)
Naya [18.7K]

Answer:

Step-by-step explanation:

Just use the distributive property.

(4y^2-3)(4y+3)

= 4y^2(4y+3) - 3(4y+3)

= 16y^3 + 12y^2 - 12y - 9

4 0
4 years ago
PLEASE HELP For the expression below, write two other equivalent expressions using different terms. Make sure one is fully simpl
Julli [10]

Given:

The given expression is

-4(x+2)-2x+4

To find:

The two other equivalent expressions.

Solution:

We have,

-4(x+2)-2x+4

Using distributive property, we get

=-4(x)-4(2)-2x+4

=-4x-8-2x+4

So, one equivalent expression is -4x-8-2x+4.

On further simplification, we get

=(-4x-2x)+(-8+4)

=6x-4

Therefore, the second and fully simplified equivalent expression is 6x-4.

5 0
3 years ago
What is the sum of 2/5 and 2/4 ?
netineya [11]
2/5 + 2/4 = 8/20 + 10/20 = 18/20 = 9/10
4 0
3 years ago
Read 2 more answers
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