That depends on what you mean by a "way" of having children. Some of the more obvious answers: One. Four boys and four girls, there's no other way of getting that many boys or that many girls. 40320. Usually each child has its own distinct DNA. The information in DNA can be converted into a number, and there are 8-factorial = 8! = 40320 orderings for eight numbers. 70. If each boy is considered to be the same until it is born and then named, so that the first four boys will always be named the same way and the same for the girls, then you can find the number of ways using binomial coefficients. The number of ways of arranging four equal boys and four equal girls into an order, is the same as the number of ways of choosing four numbers from 1 to 8 representing the position of the boys in that order. The number of ways of choosing a set of 4 numbers from 8 is called "8 choose 4" sometimes written 8C4 and is calculated as (8*7*6*5)/(4*3*2*1) (The numererator product in nCr stops when you have r numbers) (8*7*6*5)/(4*3*2*1) = 70
Answer:
As parents have 5b and 3 g
so if we add them it becomes 8
hence family has 8 children
what is the measurement of
Answer:
B = 24 degrees
Step-by-step explanation:
It should have 180 total
180 - 61 = 119
2. Mr. C'Quence just wrote a 35-problem test for his math class. He wants some of the problems to be
worth two points each while the rest will be worth three points each. If the test must be worth a total of
100 points, set up a system of equations to determine how many of each type of problem Mr. C'Quence
should have on his test?
Define the variables:
Write the system (but do not solve):
I
Noah solved three math problems. The first problem took him 1 minute. The second problem took him 30% longer than the first problem, and the third problem took him 50% longer than the second problem. How long did it take Noah to solve all three problems?
Children 4 years old or younger can ride the train for free. Write an inequality that expresses who can ride the train for free.
x<=4
x is less than or equal to four
children less than or equal to four can ride the train for free
Which graph shows y = 2x - 1/2?
Answer:
Third down
Step-by-step explanation:
2x = slope
-1/2 = y-intercept
Y = 0.4x^2 + 2x + 2.5 Help!
Answer:
Step-by-step explanation:
Are you trying to find the x-intercepts?
Pythagorean Theorem:
x = [-2 ±√(2^2-4(0.4)(2.5)]/[2(0.4)] = -2.5
hELp mEEEEEEE pLssssssss
Answer:
its #3
Step-by-step explanation:
hope this helps
it's 3
Step-by-step explanation:
Hope it is correct
Can someone help me with this geometry question?
13.73cm^2
You can apply the same apoproach from the other question. It's the area of the square minus the area of the circle. So,
Area of the square is 8x8=64
Area of the circle is (pi)*(radius=4)^2=50.27
64-50.27=13.73cm^2
What is the answer to 30% of 50?
Answer:
15
Step-by-step explanation:
Use the x method or cris cross
please answer due today
One of the legs of a right triangle measures 6 cm and its hypotenuse measures 11 cm.
Find the measure of the other leg. If necessary, round to the nearest tenth.
Answer: 12.53 cm
Step-by-step explanation:
Answer:
Step-by-step explanation:
[tex]h^2=x^2+y^2\\ \\ x^2=h^2-y^2\\ \\ x=\sqrt{h^2-y^2}\\ \\ x=\sqrt{121-36}\\ \\ x=\sqrt{85}[/tex]
1 r 2 (the symbol is pi) is the formula to find the area of a
Select one:
a. square
b. hexagon
O c. triangle
O d. circle
Answer:
d: circle
Step-by-step explanation:
The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.
The average mark scored by 29 students in a science test was 56%. John was sick, so he sat the test late and scored 71%. Including John's score, what was the new mean mark?
Answer:B
Step-by-step explanation:
Please help. I suck at geometry
Answer:
Complementary angle is 90 degree and supplementary angle is 180 degree
help! answer options included
Answer:
Y = [-6 6 6 -6]
Step-by-step explanation:
From the given matrices
If X - 2Y = Z
b - 2c = a ... 1
a -2d = c ...2
4+2a = 16.... 3
a + 2b = b .... 4
From3 ;
2a = 16-4
2a = 12
a = 6
From 4;
a + 2b - b = 0
a+b = 0
a = -b
6 = -b
b = -6
From1;
b - 2c = a
-6 - 2c = 6
-2c = 12
c = -6
also
a - 2d = c
6-2d = -6
-2d = -6-6
-2d = -12
d = 6
Hence the matrices Y = [-6 6 6 -6]
-3(x-14) + 9x = 6x + 42
Answer:
All real numbers are solutions.
Step-by-step explanation:
Let's solve your equation step-by-step.
−3(x−14)+9x=6x+42
Step 1: Simplify both sides of the equation.
−3(x−14)+9x=6x+42
(−3)(x)+(−3)(−14)+9x=6x+42(Distribute)
−3x+42+9x=6x+42
(−3x+9x)+(42)=6x+42(Combine Like Terms)
6x+42=6x+42
6x+42=6x+42
Step 2: Subtract 6x from both sides.
6x+42−6x=6x+42−6x
42=42
Step 3: Subtract 42 from both sides.
42−42=42−42
0=0
Answer:
all real numbers
Step-by-step explanation:
-3 (x - 14) + 9x = 6x + 42
-3 (x - 14) + 9x - 6x = 6x - 6x + 42
-3 (x - 14) + 3x = 42
-3 (x) - 3 (-14) + 3x = 42
-3x + 42 + 3x = 42
3x - 3x + 42 = 42
42 = 42
-u/5=-27 help pls due today
Answer:
u = 135
hoped i helped u
Step-by-step explanation:
If a Customer places an order for $47.36 and it’s late, then how much would the customer be refunded if the refund is 20% on the total
The amount of the money refunded to the customer will be $9.472.
The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.
Given that a Customer places an order for $47.36 and it’s late. The refund is 20% of the amount.
The refunded amount will be calculated by multiplying the total amount by the percentage of the refund,
Refund = $47.36 x 0.2
Refund = ( $9.472 )
Therefore, the refunded amount will be $9.472.
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Two numbers have a sum of 7. When the smaller number is subtracted from twice the larger number, the result is 20. Which is the following is the larger number.
11
9
15
12
Which is it?
Answer:
9
Step-by-step explanation:
according to the condition it is possible to make up a system of two equations (if to suppose 'l' - the larger number and the 's' - is the smaller one):
1. 'two numbers have a sum of 7' means s+l=7;
2. 'When the smaller number is subtracted from twice the larger number, the result is 20' means 2*l-s=20.
3. the system of two equations is:
[tex]\left \{ {{s+l=7} \atop {2l-s=20}} \right. \ => \left \{ {{s=-2} \atop {l=9}} \right.[/tex]
4. the larger number is 9.
The larger number would be as follows:
[tex]9[/tex]
What are numbers?Let the two numbers (larger and smaller) be [tex]= x ; y[/tex] respectively.
[tex]x + y = 7[/tex]
So, [tex]y = 7 - x[/tex]
Given that,
The Smaller number subtracted from twice large number gives 20. Thus,
[tex]2x - y = 20[/tex]
Putting the value of [tex]y, 2x - (7 - x) = 20[/tex]
[tex]2x - 7 + x = 20[/tex]
[tex]3x - 7 = 20[/tex]
[tex]3x = 27[/tex]
[tex]x = 27 / 3[/tex]
∵ [tex]x = 9[/tex] [The larger Number]
The smaller number [tex]'y' = 7 - 9 = -2[/tex]
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Let W represent the number of attempted experiments to get one experiment that is not successful.
The random variable W has a geometric distribution with mean 4 and standard deviation 3.5. Which of the following is the best interpretation of the standard deviation?
A single value randomly selected from the distribution of W will vary 4 by 3.5 attempted experiments. (collegboard)
Answer:
Values of W typically vary from 4 by about 3.5 attempted experiments, on average.
Step-by-step explanation:
You want to find out how sleep deprivation affects motor performance. To study this, you have sleep-deprived subjects (such as parents of newborn babies or night-shift workers) record the number of minutes they sleep each night and take a series of motor performance assessments, with 1 minute being the smallest unit on the scale. Suppose the first subject sleeps 250 minutes. Determine the real limits of 250.
Answer:
the real limits are;
Lower Real Limits = 249.5
Upper Real Limits = 250.5
Step-by-step explanation:
Given the data in the question;
1 minute being the smallest unit on the scale
so we say; 1/2 which 0.5 minutes which we will use to calculate pur real limits time;
given that; the first subject sleeps 250 minutes
so
Lower Real Limits will be;
Lower Real Limits will = 250 - 0.5 = 249.5
Also our Upper Real Limits will be;
Upper Real Limits = 250 + 0.5 = 250.5
Therefore; the real limits are;
Lower Real Limits = 249.5
Upper Real Limits = 250.5
What is angle D equal??
What is the value of 15x - 20x?
A. -35x
B. -5x
C. 5x
D. 35x
Answer:
Step-by-step explanation:
15x - 20x = -5x
answer is B
Answer:
Its b
Step-by-step explanation:
2. A spy uses a telescope to track a rocket launched vertically from a launch pad 6 km away. The rocket travels upwards at a velocity of 21.6 km per minute. Find the rate of change of the distance between the spy and the rocket when the rocket is 8 km in the air. Answer: 17.28 km/mim
NEED HELP ASAP
Answer:
The rate of change in distance between the spy and the rocket is 10.8 km/min,
or about 180 m/sec.
Step-by-step explanation:
At "Time=0" the rocket is 6km from the spy.
The rocket travels vertically 8km in about 0.37 minutes, calculated by 8km÷21.6km/min.
At that point, the rocket is 10 km from the spy., calculated by 6²+8²=10²
The difference is 4 kiilometers over 0.37minutes, about 22.2 seconds
Divide Distance by Time to get Rate:
4km/0.37min = 10.8 km/min
That is about 180 meters per second.
please help only answer if you know please
Answer:
a)Let the number of avocados that I brought be a and number of oranges be r.
b) a+r=28 ---(1)
a+2r=44 ---(2)
c) a+r=28
a=28-r ---(3)
sub (3) into (2), 28-r+2r=44
r=16
sub r=16 into (3), a=28-16
a=12
∴ I brought 12 avocados and 16 oranges.
REASONING Tell whether the rates are equivalent.
75 pounds per 1.5 years
38.4 ounces per 0.75 year
Answer:
No, either convert pound to ounces or the other way around.
Step-by-step explanation:
Use 1 lb= 16 oz so 75 lb=16 x 75 =1200 oz ---> 1200 ounces per 1.5 years..
---> 1200 oz/1.5 years (1)
The second equation is 38.4 ounces per 0.75 years , will be the same as 76.8 ounces per 1.5 years.---->76.8 oz / 1.5 years (2)
So compare (1) and (2) are not equivalent....
The rates are not equivalent to each other..
What are equivalent expressions?Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.
To derive equivalent expressions of some expression, we can either make it look more complex or simple. Usually, we simplify it.
Use 1 lb= 16 oz
Thus 75 lb=16 x 75 =1200 oz
Means 1200 ounces per 1.5 years..
Now 1200 oz/1.5 years ----- (1)
The second equation is 38.4 ounces per 0.75 years which will be the same as 76.8 ounces per 1.5 years.
76.8 oz / 1.5 years ----- (2)
So compare (1) and (2) are not equivalent to each other.
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The table shows Mitch’s record for the last thirty par-3 holes he has played.
Based on this record, what is the probability that Mitch will score a 2 or 3 on the next par-3 hole?
a. 7/9
b. 3/5
c. 3/10
d. 9/50
Answer: THE ANSWER IS D
Step-by-step explanation:
Solve for z.
6z+ 3 - 4z = 9
Answer:
z = 3
Step-by-step explanation:
700% of what number is 4,340?
Answer:
620
Step-by-step explanation:
100% must be the the answer so 700% must be 7 times that number.
4340÷7=620
Solve the system of linear equations below, using substitution method.
8x + 9y = 36
3x + 4y = 16
0 (0,4)
хо (57.6.-47.2)
0 (4.4137, 2.9396)
O (5.6842,-0.2632)
5
Solve the system of linear equations below, using substitution method.
8x + 9y = 36
3x + 4y = 16
your answer is in attachment....