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3 years ago

Every time Tom and Maya have a child, there is an equal probability of it being a boy or a girl.

1 answer:

4 0

All outcomes of three children (using G for girl and B for boy)
GGG, GGB,GBG,GBB,BGG,BGB,BBG,BBB
1) exactly two is 3 out of 8 total outcomes, or 3/8
2) all sons is one outcome, or 1/8

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Two number cubes are rolled.

Olegator [25]

Cubes have 6 numbers
3 odd, 3 even

probablity=desiredoutcome/totalpossibleoutcomes
there are 6 total desired outcomes (3 on each cube)
total possible, there are 6*6 or 36 total possible outcomes
so 6/36 or 1/6 chance

3 0

4 years ago

Read 2 more answers

Could anyone help with this question?

Nikitich [7]

Answer:

I just answered this question, In case you missed it, here it goes again:

Values for the coefficient in the product k:

$a=b=c=d=3*10^8$ , so the first four boxes should be filled with the number "3"

Drop down arrow: "does"

Step-by-step explanation:

We perform all the products of wavelength time frequency indicated for the column of the quantity "k":

$a$ = $1 * 10^{-10} * 3\, * 10^{18} = 3 * 10^{-10+18} = 3 * 10^{8}$ =

$b=1 * 10^{-1}*3*10^9=3* 10^{-1+9}=3*10^8$

$c=600*10^{-6}*5*10^{11}=3000*10^{-6+11}=3000*10^5=3*10^3*10^5=\\=3*10^{3+5}=3*10^8$

$d=4*10^{-7}*7.5*10^{14}=30.0*10^{-7+14}=30*10^7=3*10*10^7=\\=3*10^{1+7}=3*10^8$

Therefore, all products of these different wavelengths and their associated frequencies render the exact same answer : $3*10^8$ , which means that as one of these quantities increase, the other one will decrease in the same proportion to give the same numerical answer.

This means that the two quantities are associated via inverse proportionality. As seen in the equation below, if the quantities "x" and "y" are related by inverse proportionality (shown as one equals a constant "A" divided by the other variable), their product x*y will give that constant value "A" (which in our case is $3*10^8$ .

$x=\frac{A}{y} \\x*y=A$

8 0

3 years ago

Complete the square 2x2- 12x+ 26 = 10

Mariana [72]

$2x^2-12x+26=10\ \ \ | subtract\ 10\\\\
2x^2-12x+16=0\ \ \ | divide\ by\ 2\\\\
x^2-6x+8=0\\\\
put\ into\ form:\ (x+d)^2+c=0\\
-6x=2xd\ \ \ | divide\ by\ x\\
d=-3\\
8=d^2+c\\
8=9+c\ \ \ | subtract\ 9\\
c=-1\\\\
After\ completing\ the\ square:\\
(x-3)^2-1=0$

4 0

4 years ago

Solve the equation by completing the square <br><br> s^2+2s-6=0

Valentin [98]

Answer:

s=√7-1

s=-(√7+1)

Step-by-step explanation:

s^2+2s-6=0

or,s^2+2.s.1+1^2=6+1^2

or,(s+1)^2=6+1

or,(s+1)^2=7

or,(s+1)^2=(±√7)^2

or,s+1=±√7

either,

s=√7-1

or,

s=-(√7+1)

4 0

3 years ago

Ruby obtained a loan of $90,000 towards the purchase of her new home. If the loan was 75% of the purchase price, how much did sh

pantera1 [17]

Solution:

Loan amount = $90,000

Given that this loan is 75% of purchase price of the new home.

We are required to to determine the amount paid for the home.

Let the amount paid for the home be x

$\begin{gathered} From\text{ the information given, } \\ 75\text{ \% of x = 90,000} \\ \frac{75}{100}x=90,000 \\ 0.75x=90,000 \\ x=\frac{90000}{0.75} \\ x=120,000 \end{gathered}$

The amount she paid for the home is $120,000 (Dollars)

4 0

1 year ago