We are given:
The time-traveller has 79 books, but he can only take 5 books
since we need to find the number of ways he can choose 5 books, we know that the order in which he takes the books does NOT matter
Hence, we will use combination
Finding the number of ways:
Since we will use combination, ₇₉C₅
We know that the formula for combination is (n!) / (r!(n-r)!)
₇₉C₅ = 79! / 5!(74!)
₇₉C₅ = 22,537,515
Therefore, the time traveller can choose 5 books in 22,537,515 different ways
Use substitution to solve the system.
x = 3y - 12
5x + 3y = 30
I would appreciate answers
Answer:
its ( 3,5) Equation form is: x = 3 , y = 5
Step-by-step explanation:
HELPPP ME!!! ASAP
PLZZZZZZZZZZ
ANSWER:i think its C
Step-by-step explanation:
Find the area of the trapezoidal shown
Answer:
may you show us the pic so we can help?
Step-by-step explanation:
if Afsheen can read 39 pages of a book in half an hour how much will it take her to finish the book that is 1287 pages
We are given:
Afsheen can read 39 pages in 30 minutes
Time taken by Afsheen to read 1287 pages:
Time taken to read 1 page:
Time taken to read 1 page = time taken to read 39 pages / 39
Time taken to read 1 page = 30 minutes / 39
Time taken to read 1 page = 0.77 minutes
Time taken to read 1287 pages:
Time taken to read 1287 pages = Time taken to read 1 page * 1287
Time taken to read 1287 pages = 0.77 * 1287
Time taken to read 1287 pages = 991 minutes OR 16.52 hours (Approx)
Answer:
in 1 hour = 2×39= 78 pages
so 1287 pages= 1287÷78= 16.5 hours
Step-by-step explanation:
it takes 16. 5 hours that means 16 hours 30 min
0 of 1
Does the equation 94=1227
9
4
=
12
27
represent a proportional relationship? Why or why not?
Select the option that correctly answers both questions.
Yes, it is proportional because 94=1227.
9
4
=
12
27
.
No, it is not proportional because 94≠1227.
9
4
≠
12
27
.
Yes, it is proportional because 94≠1227.
9
4
≠
12
27
.
No, it is not proportional because 94=1227.
Answer:
its 9 4 = 12 27
Step-by-step explanation:
Find the image of (8,0) after a rotation of 90° about the origin.
Answer:
(0,8)
Step-by-step explanation:
this is my guess because 90° would move it from axis to axis, switching the x & y numbers. i could be wrong though & my appologies if i am incorrect
What is the value of f(g(3))
Answer:
A
Step-by-step explanation:
f(g(3)= f(g(x=3)) = f([tex]\frac{3+1}{3-1}[/tex]) = f(4/2) = f(2) = f(x=2) = 3*2-7 = 6-7 = -1
Answer:
Step-by-step explanation:
A . It is the correct answer
A man is lying on the beach, flying a kite. He holds the end of the kite string at ground level and estimates the angle of elevation of the kite to be 55°. If the string is 350 ft long, how high is the kite above the ground? (Round your answer to the nearest foot.)
The kite is approximately 345 feet above the ground.
The height of the kite above the ground is 287 ft
The length of the string, the height of the kite (h) above ground and the perpendicular distance from the end of the kite string to the man forms a right angled triangle.
Trigonometric shows the relationship between the lengths and angles of a right angled triangle.
Therefore using trigonometric ratios:
sin(55) = h / 350
h = 287 ft
Therefore the height of the kite above the ground is 287 ft.
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I need a tutor or someone that’s willing to help ... but can someone pls answer
Answer:
1/2
Step-by-step explanation:
Answer:
Your slope is 1/2
Step-by-step explanation:
Slope is rise over run or m=rise/run rise being the Y value and X being the run value. You can count the grid on the graph provided.
rise= 1
run= 2
What is the value of P(S and T)?
A.
B.
C.
D
Answer:
0.25 but I am not sure umm I think
HELP ME OUT REAL QUICKKKKKKKKKKKKK
What is the slope of the line whose equation is y-4={(x-2)?
у
-6
5
4
(2,4)
8
N
х
5 -5 -4 -3 -2 -21
2 3 4 5 6
(0, -1)
1
Answer:
1
Step-by-step explanation:
coefficient if x term is 1
Topic: coordinate geometry
If you like to venture further, do check out my insta (learntionary) where I constantly post math tips! Thanks!
The slope of the line whose equation is y - 4 = (x - 2) is,
⇒ m = 1
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
Equation of line is,
⇒ y - 4 = x - 2
Now, We can simplify for slope as;
⇒ y - 4 = x - 2
⇒ y = x + 2
⇒ dy/dx = 1
⇒ m = 1
Thus, The slope of the line whose equation is y - 4 = (x - 2) is,
⇒ m = 1
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what is the answer of this 4:3=a:6
Answer:
a = 8
Step-by-step explanation:
4 : 3 = a : 6
[tex]\frac{4}{3} = \frac{a}{6}[/tex]
Cross multiply
4*6 = a * 3
[tex]\frac{4*6}{3}=a[/tex]
a = 4 * 2
a = 8
what linear function contain the following point (-4, 4) and (0, 5)
Answer:
y = 1/4x + 5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
Random Point (-4, 4)
y-intercept (0, 5)
Step 2: Find slope m
Substitute: [tex]m=\frac{5-4}{0+4}[/tex]Subtract/Add: [tex]m=\frac{1}{4}[/tex]Step 3: Write linear equation
y = 1/4x + 5
A good general rule for this course is to be organized, set a study schedule, and review your work.
True
False
Answer:
True
Step-by-step explanation:
Being organized, having a study schedule and reviewing your work are all great habits to becoming a well-rounded student and generally succeeding in a course.
Please rate 5 stars and/or say thanks if I was able to help!
Have a good day!
~Roi
Use the digit 5, 7, and 2 to write four numbers that are greater than 400.
All the possible numbers:
257275527572725752numbers greater than 400:
527572725752your answers : 527, 572, 725, 752
mrk as brainleist ☺️
ANSWER THE QUESTION PLEASE & THANK YOU ! Show that the equation y +2 = 2(3x + 1) is linear and that it represents a proportional relationship
between x and y.
Part 1 out of 4
y +2=2(3x + 1)
y +2=
JX +
✓ Check
Next
Answer:
y+2=6x+2
Step-by-step explanation:
[tex]y+2=2(3x+1)\\y+2=6x+2\\y=6x+2-2\\y=6x[/tex]
Since the exponent/degree of x and y both the variables are 1 the equation is linear and y=6x represents a proportional relationship between x and y
(Giving brainliest!!!)
How do you solve 7,124 ÷ 26 using standard algorithm?
Answer:
274
Step-by-step explanation:
The standard algorithm of multiplication is based on the principle that you already know: multiplying in parts (partial products): simply multiply ones and tens separately, and add.
However, in the standard way the adding is done at the same time as multiplying. The calculation looks more compact and takes less space than the “easy way to multiply” you have learned.(i really think this is correct but I am so so sooo sorry if it's not!!!!)
Please answer all of these
Answer:
I am not certain but
Step-by-step explanation:
4. y=-6x-48
5.-7 and 4
thoes are the only ones I know but good luck
What is 24×4
please answer and give expalnation
A basketball player made 77 out of 100 attempted free throws. What percentage of free throws was made?
The player made____% of the free throws attempted.
Answer:
77%
Step-by-step explanation:
Evaluate 8+3e when e = 2
Answer: 14
Step-by-step explanation: bru is simple
Answer:
8+3e=8+3(2)=8+6=14. aswer is 14
hope this helps u plz give me the brainliest pplzz
How many groups of 2/3 are in 3/5 a 915 B 9/10 C 1 1/3 D 1 1/9
Answer:
aaa
Step-by-step explanation:
35istohhhaaa bla bla nla
Liam had a container of oatmeal that contained 5 and one-half cups of oatmeal. Liam ate StartFraction 4 over 9 EndFraction cups of oatmeal every morning before school for a week. Which is the best estimate of the number of cups of oatmeal that Liam had left in the container at the end of the five-day week?
A.2 1/2
B.3
C.3 1/2
D.5
Answer: B or 3
Step-by-step explanation:
had this question on my quiz
Evaluate the integral using the indicated trigonometric substitution. sqrt(x2 − 81)/x dx, x = 9 sec()
Answer:
C
=
C
'
−
81
2
ln
9
Step-by-step explanation:
ABCD is a rectangle. The length of AC is 3x - 1. The length of BD is 2x + 5.
What is the length of AC?
a.3
b.6
c.13
d.17
Answer:
C.13
Step-by-step explanation:
can someone please help
f(t) = 2t - 3
f(7)=
Water flows through a pipe at a rate of 2 fluid ounces per second. Express this rate of flow in quarts per minute.
Answer:
Step-by-step explanation:
3.75
Water flows through a pipe at a rate of 3.75 fluid quarts per minute.
What is multiplication?Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.
Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.
Given:
Water flows through a pipe at a rate of 2 fluid ounces per second.
2 ounces = 0.0625 quarts
And 1 second = 0.0166667 minutes
So, water flows through a pipe at a rate of 0.0625 quarts per 0.0166667 minutes.
Water flows through a pipe at a rate of 3.75 fluid quarts per minute.
Therefore, the rate is 3.75 fluid quarts per minute.
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4x-3(x+4)=7 i need to know this i need help with this.
Answer:
x=19
Step-by-step explanation:
4x-3x-12=7
x-12=7
x=7+12
x=19
Answer:
x=19
Step-by-step explanation:
first you would distribute the -3 to the x and the 4 which would give you
4x-3x-12=7
next you would combine like terms (there's always an invisible 1 one front of a variable)
x-12=7
then to get the variable by itself you would add 12 on each side
x=19
hope this helped :)
Find the ratio a:b if it is given that ... a+3b/5=a-2b/2. HELP RIGHT NOW PLS
By simplifying the given equation, we can see that the ratio a:b is:
8:1
How to find the ratio a:b?
We start with the equation:
(a + 3b)/5 = (a - 2b)/2
The first thing we need to isolate each variable in one side of the equation.
(a + 3b)/5 = (a - 2b)/2
2*(a + 3b) = 5*(a - 2b)
2a + 6b = 5a - 10b
6b + 10b = 5a - 2a
16b = 2a
So, 16 times b is equal to 2a
We can write this as:
b/2 = a/16
b = a/8
Then the ratio a to b is:
8:1
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