Using the arrangements formula, it is found that he can line the books up on his bookshelf in 24 ways.
The number of possible arrangements of a set of n elements is given by the factorial of n, that is:
[tex]A_n = n![/tex]
In this problem, he is going to arrange 4 books(English, biology, history and health), hence [tex]n = 4[/tex] and:
[tex]A_4 = 4! = 24[/tex]
He can line the books up on his bookshelf in 24 ways.
A similar problem is given at https://brainly.com/question/24648661
HELP PLEASE!!! I give Brainlliest!!! 15 points!!!
Which three decimals are between 10% and 20%?
0.011
0.13
1.2
0.013
0.15
1.4
0.019
0.17
1.6
Answer:
0.13, 0.15, 0.17
Step-by-step explanation:
Need help with explanation
Answer:
Looks to confusing for me sorry tho
Step-by-step explanation:
What is the y-intercept of the line 2x+3y=6
Answer:
3
Step-by-step explanation:
go to desmos and use the graphing calculator
Answer: (0,3)
Step-by-step explanation:
desmos calculator said so
15PTS PLEASE HELP ASAP!
(dont write random answers pls)
look at the pic attached:
Answer:
-1.75
Step-by-step explanation:
We know that the midpoint formula is [for the x-coordinate per say] x = 1/2x1 + 1/2x2. If we want to find a point that lies 1/4th of the way we use x = 3/4x1 + 1/4x1. How? Because the point lies 1/4th from one endpoint and 3/4th from the other.
x = 3/4x1 + 1/4x2,
x = 3/4(-3) + 1/4(2) = -9/4 + 2/4 = -7/4
= - 1.75
--- There is an easier way to do it though, but it is really vague so you should not use it. We can form a triangle with MN being the hypotenuse. What would the length of the legs be? They would be 6 and 5. Now let's form a triangle 1/4th of that. 6/4 = 1.5 and 5/4 = 1.25. If you look at the diagram, start from point N move up 1.5 units and over 1.25 forming our mini triangle. You can see the x-axis has a value of -1.75.
Erin needs to make at least a 75 on her semester exam to maintain a B in the class. Which
number line correctly represents this situation? *
Answer:
where are the number lines ??
Step-by-step explanation:
Compared to last month, there was a 65% increase in the number of houses sold this month. There were x. number of houses sold last month. Write two expressions that can be used to determine the number of houses
Answer:
x+0.65x and x(1 + 0.65)
Step-by-step explanation:
Given
Original number of houses last month = x
If there are 65% increase in the number of houses, then;
Increment = 65% of x
Increment = 0.65x
The number of houses sold compared to last month = Original number + Increment
The number of houses sold compared to last month = x + 0.65x
This can also be expressed as x (1+ 0.65)
Hence the required expressions are x + 0.65x and x(1 + 0.65)
Name the three points shown by black dots on the graph below as ordered pairs. Put a comma and a space between each ordered pair.
Answer:
(10, 40), (15, 60), (25, 100)
Step-by-step explanation:
(x, y) = (10, 40) means x = 10, y = 40
HELP!!!
What is the equation of this line?
A. Y = 9/15x + 21
B. Y = 2x + 9
C. Y = 2/3x + 9
D. Y = -2x - 21
Answer:
C. Y = 2/3x + 9
Step-by-step explanation:
I believe that is the answer because I graphed it. Although I could be incorrect.
What is the area, in square meters, of the rhombus above?
Answer:
C
Step-by-step explanation:
Answer:
Answer is D
Step-by-step explanation:
In order to find the answer you would need to multiply 7 square meters by 7.9 square meters which would get 55.3 square meters.
Please answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
........................
Answer:
7:5
Step-by-step explanation:
Tyler has 77 followers while Naomi only has 66. To find the ratio you would but the amount of followers Tyler over the amount of followers Naomi has which would look like [tex]\frac{77}{55}[/tex]. But this is an improper fraction so you would divide the top and the bottom by their common dominator which is 11. 77 ÷ 11= 7,
55 ÷ 11 = 5, making the simplified fraction [tex]\frac{7}{5}[/tex] or 7:5
Hope this helps!
If I am incorrect please tell me I enjoy learning from my mistakes!
Good luck!
1. 34.5x when x = 4.2
evaluate the exprestion
WHAT IS THE RATE OF CHANGE HELP!!
Answer:
B) Y=85x
Step-by-step explanation:
The actual rate of change is 75 so you need to find which one(s) have a greater one. The other 2 that are equations have a less rate of change so it is B.
Hope this helps. Pls give brainliest.
find the length of x and y
Answer:
x = 10.296
y = 5.831
Step-by-step explanation:
You can use the Pythagorean theorem to solve the triangles shown in various ways.
9²+5²=x²
x = 10.296
5²+3²=y²
y = 5.831
Dianne went to the grocery store and bought 4 pounds of chicken at $3 per pound, 5 cans of green beans at $0.88 each and 2 pounds of potatoes at $1.80 per pound. If she paid with a . $50 bill, how much change will Dianne have?
Answer:
30 dollars is the amount of change she will have
Answer:
$30 is the amount of change she will have.
Step-by-step explanation:
Solve for the x using elimination
3x-2y=13x−2y=1
2x+2y=42x+2y=4
3x - 2y = 1
2x + 2y = 4
Add the second equation to the first
5x = 5
2x + 2y = 4
Divide the first equation by 5
x = 1
2x + 2y = 4
Subtract the first equation from the second
x = 1
x + 2y = 3
Subtract the first equation from the second again
x = 1
2y = 2
Divide the second equation by 2
x = 1
y = 1
So, the solution is x = 1 and y = 1 {or: (1, 1)}What is the coefficient of q in the sum of these two expressions?
(23q – 34) and (–16q – r)
A. 2/3
B. 3/4
C. 1/2
D. 1
answer:
1/2 bc 2/3-1/6 is equal to 4/6-1/6=3/6.
3/6=1/2
Step-by-step explanation:
love the oikawa pfp
The coefficient of {q} in the sum of the given expressions is 7.
What is expression?A mathematical expression is a combination of terms both constants and variables. For example, we can write -
2x + 3y + 5
4x + 5
Given are the expressions as -
(23q – 34) and (–16q – r)
We can write the sum of the given expressions as -
(23q – 34) + (–16q – r)
(23q - 16q) - r - 34
7q - r - 34
Here -
(7)q - r - 34
(7) is the coefficient of {q}.
Therefore, the coefficient of {q} in the sum of the given expressions is 7.
To solve more questions on coefficients, visit the link below
https://brainly.com/question/13431100
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Choose yes or no to tell if the number 10 to the third power will make each equation true
Answer:
I need to see the equation to solve it.
Step-by-step explanation:
-3.6x + 1.0 = -16 - 1.9x
Answer:
-17
Step-by-step explanation:
bxbxnxjdjxjxjxjdndndndp
For ax + by = c, solve for x.
Answer:
Step-by-step explanation:
ax + by = c
ax= c-by <------- Subtract by "by"
x= c-by/a <------ divide by a
Find the slope of the line that passes through each pair of points.
C(0, –2), D(3, -2)
Answer:
0
Step-by-step explanation:
y2-y1/x2-x1
-2+2/3-0
0/3
= 0
What is the range of this function??
Answer:
[tex]y\leq 1[/tex]
Step-by-step explanation:
Range is defined as what y values the function can equate to.
Since the function is facing down, y has to be [tex]\leq[/tex] 1 (as the maximum of the function is at y=1).
5y=120 and 2x=108 FIND THE MISSING VALUES
To solve these, we will divide on both.
[tex]5y = 120\\\\y = 24[/tex]
[tex]2x = 108\\\\x = 54[/tex]
Cecilia watched 1 2 of a movie in the morning, and she watched some more at night. By the end of the day, she still had 1 3 of the movie left to watch. How much of the movie did Cecilia watch at night?
Answer: 1/6 of the movie.
Step-by-step explanation:
First, she watches 1/2 of the movie.
This means that if the movie lasts N minutes, the time left is:
N - (1/2)*N = (1/2)*N.
Then she watches another part of the movie, let's call it as a*N, and after that, she has 1/3 of the movie left, we can write this situation as:
(1/2)*N - a*N = (1/3)*N
we can divide by N in both sides to get
(1/2) - a = (1/3)
(1/2) - (1/3) = a
3/6 - 2/6 = a
1/6 = a
So we can conclude that she watched 1/6 of the movie at night.
help plsssssssss. cm.
suppose v varies directly as g, and v = 36 when g = 4. find v when g = 11.
Answer:
v = 99
Step-by-step explanation:
Given v varies directly as g then the equation relating them is
v = kg ← k is the constant of variation
To find k use the condition v = 36 when g = 4 , then
36 = 4k ( divide both sides by 4 )
9 = k
v = 9g ← equation of variation
When g = 11 , then
v = 9 × 11 = 99
The price of an item has been reduced by 65% . The orginal price was 69$ What is the price of the item now
Answer:
$24.15
Step-by-step explanation:
Since we know its 35% of the original price we simply do 69×35% which equals 24.15. You can do it on your own work, or on a calculator to check.
You could also divide 69 by a hundred, which gives you .69 and multiply it by 35 which gives you the same answer
Answer:
$24.15
Step-by-step explanation:
65 percent of 69 is 44.85. Subtract that from the original price for $24.15. Hope this helps ^^
Heather's desk is 3 feet long. About how long is it in meters? Use 1 foot = 0.305
Answer:
0.9144 or 0.9 (rounded)
Step-by-step explanation:
0.3048*3= 0.9144 (0.9 rounded up)
or
0.305*3= 0.915 (0.9 rounded up)
Hope this helped! (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
Have a nice day! ( ﾟдﾟ)つ Bye
Which one is the answer ?
Help!will give brainliest!!!
Answer:
b is y=2x+3, a is y=2x-2
Step-by-step explanation:
You just look at the y intercepts.
Since b intersects 3 in the y axis the y intercept is 3.
Since a intersects -2 in the y axis the y intercept is -2.
Answer:
y=2x-2 for the second line (a)
y=2x+3 for the first line (b)
Step-by-step explanation:
pls mark brainliest
I need help with this question please and thank you
d-13=5 is actually suppose to be solved liek this:
d - 13 = 5
+13 +13
The absoulte value of 13 is 13, it is negative so you have to add 13 to get to 0 so it can be cancelled out.