MATHEMATICS HIGH SCHOOL

Ellen plans to have two children but doesn't know if they will be boy-boy, girl-girl, or boy-girl. What is the probability that she will have two girls?0.25
0.5
0.75
1.00

Answers

Answer 1

Answer:

Answer:

Option A. 0.25

Step-by-step explanation:

Ellen plans two children but does not know if they will be boy-boy, girl-girl or boy-girl.

For the first baby to be the girl child

Probability = $(1)/(2)$

Similarly probability for second baby to be the girl child will be $(1)/(2)$

Now both the children are girl to probability for this event will be

= $(1)/(2)$ × $(1)/(2)$

= $(1)/(4)$

= 0.25

Option A. 0.25 is the answer.

Answer 2

Answer: .25 because you would look at it like a boy-girl situation and this problem is more of a science problem. Anyways, if you do BG(BoyGirl) x BG(BoyGirl) it equals BB(Boy Boy), BG( Boy Girl ), another BG and a GG ( Girl Girl ) so there is a 1/4 chance of having 2 girls which is the same as .25.

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Answers

For a parabola equation ax^2+bx+c, the vertex would be -b/2a
Therefore, the x coordinate of the minimum would be -(-32)/2(2)=32/4=8
That is the "h" part of the equation.
Now, we need to find the y coordinate, which will be the "k" part of the equation. We can find that by plugging in x=8 into the equation: 2(8)^2-32(8)+56= -72

Therefore, we plug (h,k) and a in, and get the equation y=2(x-8)^2-72
The x coordinate of the minimum is 8

Make r the subject of the formula in I=E/R+r

Answers

Step-by-step explanation:

$I = (E )/( R) + r$

$I - ( E )/( R) = r$

$(I R -E )/( R) = r$

HOPE IT HELPS Y

Does proportional and congruent mean the same thing?

Answers

No.
"Proportional" means the same shape.
"Congruent" means the same shape AND the same size.

Proportional means corresponding in size or amount to something else/having a constant ratio to another quantity.

Congruent means identical in form; coinciding exactly when superimposed.

Evaluate......6!2!=?

Answers

Answer: The required value of the given expression is 1440.

Step-by-step explanation: We are given to evaluate the following expression involving factorials:

$E=6!2!.$

We know that

for any non-negative integer n, the factorial of n is defined as:

$n!=n*(n-1)*(n-2)*~.~.~.~*2*1.$

Therefore, the value of the given expression E will be

$E\n\n=6!2!\n\n=6*5*4*3*2*1*2*1\n\n=1440.$

Thus, the required value of the given expression is 1440.

Note that the required value of the given expression 6! 2! is 1440.

How is this so?

We are given to evaluate the following expression involving factorials -

E = 6! 2!

n! = x x (n-1) x (n-2 ) x .... x 2 x 1

Hence, , the value of the given expression E will be

= 6! 2!

= 6 x 5 x 4 x 3 x 2 x 1 x 2 x 1

= 1440

Recall that factorials are mathematical operations denoted by an exclamation mark (!) that represent the product of a positive integer and all positive integers less than it.

Learn more about factorials at:

brainly.com/question/25997932

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Find the gradient of the line segment between the points (-2,3) and (-4,-2).Give your answer in its simplest form.