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SIZIF [17.4K]
3 years ago
10

Mr. And Mrs. Doran have a genetic history such that the probability that a child being born to them with a certain trait is 0.14

. If they have seven children, what is the probability that at most two of their seven children will have that trait? Round your answer to the nearest thousandth.
Mathematics
1 answer:
poizon [28]3 years ago
8 0

Answer:

0.938

Step-by-step explanation:

From the question :

p = 0.14

Number of children, n = 7

P(x ≤ 2) = P(2) + P(1) + P(0)

Using binomial probability :

P(x =x) = nCx  * p^x * (1 - p)^(n - x)

We could also use the binomial probability calculator :

P(x ≤ 2) = 0.3479 + 0.3965 + 0.1936

P(x ≤ 2) = 0.938

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1 1/2 is_____% of 7 1/2
Xelga [282]

Answer:

1 1/2 is__11/15___% of 7 1/2

Step-by-step explanation:

Given

Number - 7\frac{1}{2}  = \frac{15}{2}

Let X % of \frac{15}{2} = \frac{11}{2}

X % is thus equal to

\frac{11}{2} * \frac{2}{15} \\\frac{11}{15}

5 0
2 years ago
Please Help I don't understand at all !!!!!!! I'll give 50 brainly points
kherson [118]

Answer:

0 People initially had the cold.

6 People will have it after 2 days.

Step-by-step explanation:

To find out how many people had it initially, plug 0 in for x (implying 0 days later.)

C= 1*3(0)

C= 1*0

C=0

Nobody had the cold initially.

To find out how many people had it after 2 days, plug 2 in for x. (implying 2 days later.)

C= 1*3(2)

C= 1*6

C=6

Therefore 6 people had the cold after 2 days.

I hope this helps!

4 0
3 years ago
What relationship is formed by a line of symmetry and the line between opposite points in the symmetry
Anettt [7]

Answer:

  • <em>A line of symmetry and the line between opposite points in the symmetry</em><em> are </em><u>perpendicular to each other. </u>

Explanation:

A line of simmetry splits the figure into two identical halves.

Suppose you have a symmetrical plane figure (like a square or a circle), the line of symmetry divides such figure in two sides: call them the left side and the right side.

The reflection of each point on the right side is a point on the left side along the perpendicular line that joins the two points and the line of symmetry.

For instance, if the line of symmetry is vertical, such as the x-axis, the line between the opposite points in the symmetry is horizontal, i.e. perpendicular to the x-axis (the line of summetry).

6 0
3 years ago
HELP Plssss..... The m
hammer [34]

Answer:

Step-by-step explanation:

Hey there!!!

According to the question,

Angle P is three less than twice less of an angle Q.

Then, let angle Q be x then angle P is 2x-3.

Now, it has also given that they are supplementary angle.

We know that the sum of supplementary angle is 180°.

Therefore, x+ 2x - 3°=180°.

Or, 3x = 180°-3°

Or, x = 177°/3

Therefore the measure of angle Q is 59° and P is 2×59°-3°= 121°.

Hope it helps....

6 0
3 years ago
Subtracting polynomials
myrzilka [38]

Answer:

-11xy

Step-by-step explanation:

Subtracting a negative means adding.

-14xy - (-3xy) = -14xy + 3xy = -11xy

7 0
3 years ago
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