Answers
Answer:
a) The easiest way is to use a calculator such as a Casio brand or Sharp brand and key in 9C7 to get 36.
However, you can also use this formula: [tex]nCr=\frac{n!}{r!(n-r)!}[/tex] where n is the total number of items and r is how many you are selecting.
Plug in values:
[tex]\frac{9!}{7!(9-7)!} =\frac{9!}{7!*2!}=\frac{9*8}{2!}=36[/tex]
b) The easiest way is to use a calculator such as a Casio brand or Sharp brand and key in 9P7 to get 181440.
However, you can also use this formula: [tex]nPr=\frac{n!}{(n-r)!}[/tex] where n is the total number of items and r is how many you are selecting.
Plug in values:
[tex]\frac{9!}{(9-7)!} =\frac{9!}{2!}=9*8*7*6*5*4*3=181440[/tex]
Related Questions
Factor completely:
–abc –5ac –4ab –20a
Answers
Answer:
[tex]-a(b+5)(c+4)[/tex]
Step-by-step explanation:
[tex]-abc-5ac-4ab-20\\-a(bc+5c+4b+20)\\-a*c(b+5)+4(b+5)\\-a*(b+5)(c+4)[/tex]
The factor of the given expression is -a(b+5)(c+4)
What is factorization?Factorization in maths is the process of breaking down a number or a mathematical object into smaller or simpler factors that can be multiplied together to get the original number or object
Given is an expression, –abc –5ac –4ab –20a, we need to factor it completely,
-abc -5ac-4ab-20
- a(bc +5c+4b+20)
- ac(b+5)+4(b+5)
- a(b+5) (c+4)
Hence, the factor of the given expression is -a(b+5)(c+4)
Learn more about factorization, click;
https://brainly.com/question/14549998
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Directions: Answer the following questions below on a separate sheet of paper.
Compute for the Income Tax Due of the following:
1. Gross income of 350,000
2. Gross income of 600,000
3. Gross Income of 1,000,000
4. Gross Income of 2,500,000
5. Gross Income of 10,000,000
Answers
Answer:
5. gross income of 10,000,000
Please please solve this quickly. I've tried many things before, and I have no clue what the answer is.
Answers
find the unknown angle
Answers
Answer:
total angles in triangle = 180
180 = 44+56+ y
y = 180-44-56
y = 80°
now to find z and x
we know the 2 straight lines are parallel (indicated by arrows)
x = 56°
z = 44°
how?
alternate angles theorem
Alternate angles are angles that occur on opposite sides of the transversal line and have the same size. Alternate angles are equal: We can often spot interior alternate angles by drawing a Z shape: There are two different types of alternate angles, alternate interior angles and alternate exterior angles.
PLZ HELP ITS SUPER URGENT
Find the length of X
Answers
Answer:x is two
Step-by-step explanation:
The transformation shown is a rotation.
True or False
Answers
Meaning of =N
please
Answers
your ans. in above pic
6x=42
A: 7
B: 6
C: -7
D: 2
Help
Answers
Because 6x7=42
So the x is replaced by the 7
you have $5.88. You buy 8 items that cost $0.44 each How many items much money do you have left?
Answers
Answer:
$2.36
Step-by-step explanation:
0.44 x 8 = 3.52
5.88 - 3.52 = 2.36
$2.36
-Chetan K
Find the slope-intercept equation of the line that has a slope of -2 and goes through the point (5,-2).
Answers
What is the measure of < A B C ?
Answers
143.25 °
is the correct answer.
please mark my answer as brainest and follow me to get the answer faster.
Find the slope of the line that passes through (2,3) and point (4,4)) using m=y2-y1/x2-x1
Answers
Answer: The slope is 1/2 or 0.5
{1, 2, 3, 4, 5, ..., 198, 199, 200}
How many members of the set shown above are multiples of 6 but not a multiple of 9?
(I need a faster way of doing this question. Not listing the factors of 6 and 9 one by one.)
Thank you so much. I will give brainliest!!!
Answers
Answer:
22
Step-by-step explanation:
The least common multiple of 6 and 9 is 18. Consider a group of 18 numbers, 1–18, for example. The multiples of 6 are 6, 12, and 18, of which two are not multiples of 9.
There are 11 groups of 18 numbers in 1–200, with 2 left over. That means there will be 11×2 = 22 numbers that are multiples of 6 but not 9.
__
200/18 = 11 remainder 2
Simplify the expression.
3.7-4.6n-3n + 6
Answers
Answer:
−7.6n+9.7
Step-by-step explanation:
First, lets put the equation
≈3.7 - 4.6n - 3n + 6
Add light terms
−7.6n + 9.7
Now were done
Landon and chris are playing a video game . At the end of the game the boys scored 209 points total if Landon scored five more than twice the number of Points that chris did how many points did Landon score
Answers
Answer:
428
Step-by-step explanation:
209+5=214
214x2= 428
I think this is the correct answer, if it's not I'm sorry :3
ANSWER ASAP PLEASE!!!!!
What is the domain of the square root function graphed below?
A. x is greater than 1
B x is greater or equal to 1
C. x is greater than 3
D. x is greater or equal to 3
Answers
Answer: the answer is D hope it helps.
Just took the test. Edge
5^-3/6^-2 Do not Change answer to Decimal Form.
A: 36/125
B: 125/36
C: 5/9
D: 9/5
Answers
[tex]\dfrac{5^{-3}}{6^{-2}}=\dfrac{\left(\dfrac 1{5^3}\right)}{\left(\dfrac 1{6^2}\right)} = \dfrac{1}{5^3} \times 6^2 = \dfrac{36}{125}[/tex]
do u mind help me pls?
Answers
2. perpendicular, parallel, perpendicular, neither, parallel
3. A
4. B
divide $70 into the ratio of 2:7: 1
Answers
Answer:
$14:$49:$7
Step-by-step explanation:
To solve this question you first add the ratios.
So 2+7+1, which is 10. You then take this number and divide it by 70 to find 1 part. 70 divide by 10 is 7, which represents 1 part.
7 times by 2 is 14, 7 times by 7 is 49 and 7 times by 1 is 7.
Thus you get the ratio, $14:$49:$7.
And if you add 14+49+7, you get 70!
Which graph is a quadratic graph? A. graph A B. graph B C. graph C D. graph D
Answers
Answer:
graph ab
Step-by-step explanation:
Step-by-step explanation:I just did it and got it right...
PLZZZZZ HELP ITS TIMED
Answers
Answer:
2. a.
3. g.
4. e.
15 liters increased by 60% is ___ liters
Answers
[tex]15 \times (1 + .6) = 24 \: \: \: liters[/tex]
it's 24 littershope it helpsor Precalculus
Unit: Get ready for trigonometry
x
Unit test
f is a trigonometric function of the form f(x) = a cos(bx + c) + d.
Below is the graph of f(x). The function has a maximum point at (pi, 9) and a minimum point at
(3pi/4, 1)
Find a formula for f(x). Give an exact expression.
Answers
Answer:
4cos(4x-4pi)+5
Step-by-step explanation:
It was from khan
Steve bought 7 boxes of pencils. Each Box contained 9 pencils. He wants to give each of his 6
friends as many pencils as possible and keep the rest. Which statement is true?
Answers
Answer:
A
Step-by-step explanation:
7*9=63
63/6= 10 remainder 3
Therefore each friend gets 10 boxes of pencils and Steve gets the leftover 3 boxes of pencils
Five years ago, a father was 3 times as old
as his son, now their combined ages amount
to 110 years. How old are they?
Answers
Answer:
Father is 80 years old and the son is 30
Step-by-step explanation:
Let father be x and son be y:
x-5 = 3(y-5)
x = 3y-10 ------ eq1
x+y = 110
x = 110 -y -------- eq2
Now if we combine the 2 equations we get:
3y + y = 110+10
y=30 (sons age)
Substituting in equation 2 we get:
x = 110 - 30
x = 80
Therefore, the fathers age is 80 and the sons age is 30.
HELP ME PLEASE IS IMPORTANT AND ASAP!
Determine whether f(x)= 5 - 2x2 -5x has a maximum or a minimum value and find that value.
Answers
Answer:
maximun (0,5)
Step-by-step explanation:
Answer:
So, I put Maximum. (-5/4, 65/8) and it was correct
Step-by-step explanation:
I don't know how to do step by step sorry
How much would it cost to buy three medium sodas and two hotdogs
Answers
Answer:
depends how much they cost each
Lamar is a commercial real estate agent who earns a yearly salary of $82,500 plus a 2.5% commission on his total sales. If his total sales in one year are $3.75 million, what are Lamar’s earnings for that year?
Answers
Answer:
$176,250
Step-by-step explanation:
Multiply $3.75 million by Tomas commission on his total sales.
Since you can't multiply a percentage you have to turn the commission into a decimal by moving it two spaces to the left. (Note: if it doesn't have a decimal add one add the end of the number then move it two spaces to the left)
$3,750,000 x .025 or 0.025 = $93,750
Add $93,750 to Tomas yearly salary
$93,750 + $82,500 = $176,250
So
If Tomas sold properties that totaled $3.75 million in sales during one year, his earnings for that year would be $176,250
Math
Convert from fraction to decimal. 5/8
Answers
Answer:
5/8=0.625
Step-by-step explanation:
5/8=decimal
5/8=0.625
Hope this helps :)
Answer:
0.625
Step-by-step explanation:
We know that 1/8= 0.125, so to get 5/8 as a decimal you would do 5 times 0.125.
HELLLLLLLLPPPPPPPPPPPPP
Answers
Answer:
C
Step-by-step explanation:
Sana nakatutulong
#Carry on learning
Pa brainliest po