Answer: the answer is B. 5p
Step-by-step explanation:
just did it so i know its right:)
comment if so!
You have 7 books,but only 3 will fit on the shelf.how many different arrangements of 3 books out of 7 could you make
To find the number of different arrangements of 3 books from 7, we use permutations, specifically P(7, 3) = 7! / (7-3)! = 210. Thus, there are 210 different arrangements possible.
Explanation:The student's question involves determining the number of different arrangements of 3 books that can be made from a set of 7 books. In mathematics, this is known as a permutation problem, since the order in which the books are placed matters.
To calculate permutations, we use the formula P(n, k) = n! / (n-k)!, where n is the total number of items to choose from, in this case, 7 books, and k is the number of items to arrange, in this case, 3. Using the formula:
P(7, 3) = 7! / (7-3)! = 7! / 4! = (7 × 6 × 5 × 4!) / 4! = 210.
Therefore, there are 210 different arrangements possible when selecting and arranging 3 books out of 7.
Find y when x is -3
y=6x+8
Answer:
-10
Step-by-step explanation:
y=6x+8
y=6(-3)+8
y=-18+8
y=-10
Period:
1. Your cell phone plan costs 15 dollars a month, plus 10 cents per minute. Fill out a table, create a graph,
and write an equation to model the money you will spend each month on your cell phone.
Graph
Equation
Table
minutes cost
To model the money spent on a cell phone plan each month, the equation Cost = $15 + $0.10 × minutes can be used. A table and graph can be created by choosing different values for minutes and calculating the corresponding cost. The slope of the line represents the rate of change and the y-intercept represents the fixed cost.
To model the money you will spend each month on your cell phone, you can use the equation:Cost = $15 + $0.10 imes minutes
This equation represents a linear relationship where the fixed cost is $15 and the variable cost is $0.10 per minute. To create a table and graph, you can choose different values for minutes and calculate the corresponding cost. For example:Minutes Cost
0 $15
10 $16
20 $17
Using this data, you can plot the points on a Cartesian coordinate plane and draw a straight line through them. The slope of the line represents the rate of change (0.10 in this case) and the y-intercept represents the fixed cost ($15).Solve the right triangle ABC, with Cequals90degrees. Aequals58.3degrees, cequals24.8 ft
m∠B = 31.7° , a = 21.1 ft , b = 13.0 ft
Step-by-step explanation:
If ABC is a right triangle, where the right angle is B, then
The hypotenuse of the triangle is b and a , c are its legssin(A) = [tex]\frac{a}{b}[/tex]sin(C) = [tex]\frac{c}{b}[/tex][tex]b=\sqrt{a^{2}+c^{2}}[/tex]The sum of the measures of the two acute angles A and C is 90°∵ ABC is a right triangle
∵ m∠C = 90°
∴ c is the hypotenuse and a , b are its legs
∵ m∠A = 58.3°
- The sum of the two acute angles in the right triangle = 90°
∴ m∠A + m∠B = 90°
- Substitute the measure of angle A
∴ 58.3 + m∠B = 90
- Subtract 58.3 from both sides
∴ m∠B = 31.7°
∵ sin(A) = [tex]\frac{a}{c}[/tex]
∵ c = 24.8 feet
∴ sin(58.3) = [tex]\frac{a}{24.8}[/tex]
- By using cross multiplication
∴ a = (24.8) × sin(58.3)
∴ a = 21.1 ft
∵ sin(B) = [tex]\frac{b}{c}[/tex]
∵ c = 24.8 feet
∴ sin(31.7) = [tex]\frac{b}{24.8}[/tex]
- By using cross multiplication
∴ b = (24.8) × sin(31.7)
∴ b = 13.0 ft
m∠B = 31.7° , a = 21.1 ft , b = 13.0 ft
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Leona purchased a $1,000 bond having a quoted price of 99.875. She had to pay a 5.5% brokerage fee (of the selling price). What was the total cost of the bond (to the nearest whole cent)?
$943.82
$1,064.44
$534.77
$2,054.22
None of these choices are correct.
Answer:
The total cost of the bond is none of the given choices.
Step-by-step explanation:
The selling price of a $1000 bond = $99.875
The brokerage fee = 5.5 %
Now, 5.5% of $99.875 = [tex]\frac{5.5}{100} \times 99.875 = 5.493[/tex]
So, the brokerage fee = $5.493
Now, to find out the total cost of the bond:
Total Cost = The selling Price + Brokerage Price
= $99.875 + $5.493
= $105.368
or, the total price of the $1000 bond is $ 105.368.
Hence, the total cost of the bond is none of the given choices.
7.90 for 40 ounces of laundry soap unit rate
Answer:
$0.20 for 1 ounce of laundry soap
Step-by-step explanation:
7.90/40=0.1975
money can't be written like that so we have to round to the nearest hundredths
= $0.20
Write the equation of the parent graph y=x^2 that has shifted right 5 and up 2
Answer:
y=x^2-10x+27
Step-by-step explanation:
y=x^2
Shifted 5 to the right: y = (x-5)^2
Shifted 2 up: y = (x-5)^2+2
Simplify. You can use "(a-b)^2 = a^2-2ab+b^2" formula.
y = (x-5)^2+2 becomes y=x^2-10x+25+2 = y=x^2-10x+27
Amy and Stephanie were playing a number game. Amy picked a number and told Stephanie that if she added 9 to the number and multiplied the sum by 3, it would equal 12. Which equation could Stephanie use to find the number, x?
Answer:
The equation for the statement is ( x + 9 ) × 3 = 12 , and the value of x is - 5 .
Step-by-step explanation:
Given as :
Let The number picked by Amy = x
Amy told to Stephanie
she add 9 to the number and multiply the sum by 3 it would be 12
So, According to statement
( x + 9 ) × 3 = 12
Or, 3 x + ( 9×3 ) = 12
Or, 3 x + 27 = 12
or, 3 x = 12 - 27
or, 3 x = - 15
∴ x = - [tex]\frac{15}{3}[/tex]
I.e x = - 5
Hence The equation for the statement is ( x + 9 ) × 3 = 12 , and the value of x is - 5 . Answer
Evaluate -3x 3 y 2, if x = -2 and y = -1. -24 24 36 -36
Answer:
24
Step-by-step explanation:
-3x^3*y^2=-3(-2)^3=(-3)(-8)*(-1)^2=24*1=24
The lower half of a square pyramid is made of granite and the top half is made of limestone. Explain how you could find the surface area of the exposed granite.
Answer:
Area of the surface area of the lower half made of exposed granite = 1/4 (Perimeter of the base * Slant length)
Step-by-step explanation:
1. Let's review the data provided to us for solving the question:
Lower half of a square pyramid is made of granite
Top half of a square pyramid is made of limestone
2. Let's explain how we could find the surface area of the exposed granite.
First of all, let's remember what is the area of a square pyramid:
Area of square pyramid = Base area + Surface area of the four sides
Normally, we need to know the length of the square base and the slant length. And now let's replace in the formula:
Area of square pyramid = Length of the side of the square² + 1/2 (4 * Length of the side of the square * Slant length)
For calculating the surface area of the lower half made of exposed granite, we need to don't consider the base area and just the half of the surface area of the four sides, so the formula is:
Area of the surface area of the lower half made of exposed granite = 1/2 [1/2 (4 * Length of the side of the square * Slant length)]
Area of the surface area of the lower half made of exposed granite = 1/4 (4 * Length of the side of the square * Slant length)
Area of the surface area of the lower half made of exposed granite = 1/4 (4 * Length of the side of the square * Slant length)
Area of the surface area of the lower half made of exposed granite = 1/4 (Perimeter of the base * Slant length)
If we want to know the surface area of the lower half made of limestone, we can use the same formula:
Area of the surface area of the lower half made of limestone = 1/4 (Perimeter of the base * Slant length)
Answer:
Find the surface area of the entire square pyramid. Find the surface area of the exposed sides of the square pyramid made from limestone. Subtract the surface area of the square pyramid made from limestone from the surface area of the entire square pyramid.
Step-by-step explanation:
edg.
vincent’s copier can print in 7 hours. chris’s printer can do the same in 13 hours. how long would it take to do the job using both copiers
Answer:
Step-by-step explanation:
1/7+1/13=1/t
multiply both sides by 7*13*t
13t+7t=7*13
21t=91
t=91/19
it will take 4 hours and 8 minutes
Select all the points that are on the graph of the line 2x + 4y=20 a.)(0.5) b. (0,10) c. (1,2) d.) (1,4) e.) (5,0) f. (10,0)
Answer:
(0,5) and (10,0)
Step-by-step explanation:
The equation of the straight line is given by 2x + 4y = 20 .......... (1)
Now, point (0,5) satisfies the equation (1) as putting x = 0, we will get y = 5.
Now, point (0,10) does not satisfy the equation (1) as putiing x = 0, we get y = 5 ≠ 10
Again, point (1,2) does not satisfy the equation (1) as putiing x = 1, we get y = 4.5 ≠ 2
Now, point (1,4) does not satisfy the equation (1) as putiing x = 1, we get y = 4.5 ≠ 4
Again, point (5,0) does not satisfy the equation (1) as putiing y = 0, we get x = 10 ≠ 5
Finally, point (10,0) satisfies the equation (1) as putiing y = 0, we get x = 10 .
Therefore, only points (0,5) and (10,0) are on the graph of the line 2x + 4y = 20 (Answer)
Answer:
The points a. (0,5) and f. (10,0) will lie on the given line.
Step-by-step explanation:
The given equation of line is [tex]2x + 4y=20[/tex].
Now, it is required to check whether the given point lie on the line or not. To check it, put the points in the equation of line and if they satisfies, then the point will be on the line else not.
(a) The first point is (0,5). Put this point in the equation as,
[tex]2x + 4y=20\\2\times0+4\times 5=20\\20=20[/tex]
Thus, the point satisfies and it will lie on the line.
(b) The first point is (0,10). Put this point in the equation as,
[tex]2x + 4y=20\\2\times0+4\times 10=20\\40\neq20[/tex]
Thus, the point doesn't satisfy and hence, it will not lie on the line.
(c) The first point is (1,4). Put this point in the equation as,
[tex]2x + 4y=20\\2\times1+4\times 4=20\\18 \neq 20[/tex]
Thus, the point doesn't satisfy and hence, it will not lie on the line.
(d) The first point is (5,0). Put this point in the equation as,
[tex]2x + 4y=20\\2\times5+4\times 0=20\\10 \neq 20[/tex]
Thus, the point doesn't satisfy and hence, it will not lie on the line.
(f) The first point is (10,0). Put this point in the equation as,
[tex]2x + 4y=20\\2\times10+4\times 0=20\\20 =20[/tex]
Thus, the point satisfies and it will lie on the line.
Therefore, points (0,5) and (10,0) will lie on the given line.
Refer the graph of line and points.
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Solve.
−1.5x−3.1<5.5
Drag and drop a number or symbol into each box to show the solution.
Answer:
[tex]x>-5.733[/tex]
Step-by-step explanation:
Given : Expression [tex]-1.5x-3.1<5.5[/tex]
To find : Solve the expression ?
Solution :
Step 1 - Write in inequality,
[tex]-1.5x-3.1<5.5[/tex]
Step 2 - Add 3.1 both side,
[tex]-1.5x-3.1+3.1<5.5+3.1[/tex]
[tex]-1.5x<8.6[/tex]
Step 3 - Divide by 1.5 both side,
[tex]-\frac{1.5x}{1.5}<\frac{8.6}{1.5}[/tex]
[tex]-x<5.733[/tex]
Step 4 - Multiply by -1 both side,
[tex]x>-5.733[/tex]
The number is -5.733 and symbol is greater (>).
the distance that Brad travels varies directly with the time spent traveling. Brad traveled 660 miles in 12 hours. How many miles could brad travel in 4?
Answer:
In 4 hours, Brad will travel 220 miles.
Step-by-step explanation:
Create the direct variation model-
y = kx
y- represents the total miles
x- represents hours
660 = k12
660/12 = k
k = 55
Model:
y = 55x
Replace x with 4:
y = 55(4)
y = 220
In 4 hours, Brad will travel 220 miles.
The answer is 220 miles.
[tex]\text{Hello there!}\\\\\text{We know that Brad traveled 660 miles in 12 hours. However, we need to}\\\text{find how many miles he traveled in 4 hours}\\\\\text{First, we need to find how many miles he can travel per hour}\\\\\text{Do this by dividing 660 by 12}\\\\660\div12=55\\\\\text{Now multiply 55 by 4 in order to see how many miles he traveled in 4 hours}\\\\55*4=220\\\\\boxed{\text{Answer: 220 miles}}[/tex]
Someone please help!
Answer:
1. 35, 32, 29, 26 are in Arithmetic Sequence having common difference - 3.
5. -7, -9, -11, -13 are in Arithmetic Sequence having common difference - 2.
Step-by-step explanation:
1. 35, 32, 29, 26 are in Arithmetic Sequence having common difference - 3.
2. -1. 6, -36, 216 are not in Arithmetic Sequence.
3. -2, -4, -8, -16 are not in Arithmetic Sequence.
4. -1, 1, 4, 8 are not in Arithmetic Sequence.
5. -7, -9, -11, -13 are in Arithmetic Sequence having common difference - 2.
6. 1, -5, 25, -125 are not in Arithmetic Sequence. (Answer)
80 foot roll of fence. to fit in backyard the width must be 15 feet long. how long can he make the other side in feet if he wants to use the entire roll?
Answer:
65 feet.
Step-by-step explanation:
80 feet roll of the fence is there.
It fits in the backyard the width must be 15 feet long.
So, there will be remaining (80 - 15 ) = 65 feet of fence.
If he wants to use the entire roll to fence the other side of the area then he can do it for more 65 feet length. (Answer)
A party rental company has chairs and tables for rent. The total cost to rent 2 chairs and 12 tables is $105. The total cost to rent 5 chairs and 3 tables is $33. What is the cost to rent each chair and each table?
The cost to rent one chair is $1.5 and one table is $8.5
Step-by-step explanation:
Let,
x be the cost of one chair
y be the cost of one table
According to given statement;
2x+12y=105 Eqn 1
5x+3y=33 Eqn 2
Multiplying Eqn 2 by 4;
[tex]4(5x+3y=33)\\20x+12y=132\ \ \ Eqn\ 3[/tex]
Subtracting Eqn 1 from Eqn 3;
[tex](20x+12y)-(2x+12y)=132-105\\20x+12y-2x-12y=27\\18x=27[/tex]
Dividing both sides by 18
[tex]\frac{18x}{18}=\frac{27}{18}\\x=1.5[/tex]
Putting x=1.5 in Eqn 1
[tex]2(1.5)+12y=105\\3+12y=105\\12y=105-3\\12y=102\\[/tex]
Dividing both sides by 12
[tex]\frac{12y}{12}=\frac{102}{12}\\y=8.5[/tex]
The cost to rent one chair is $1.5 and one table is $8.5
Keywords: linear equations, subtraction
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Final answer:
Using a system of linear equations, we determine that the cost to rent each chair is $3 and the cost to rent each table is $6 from the party rental company.
Explanation:
To determine the cost to rent each chair and each table from the party rental company, we need to solve a system of linear equations based on the information provided:
The total cost to rent 2 chairs and 12 tables is $105.
The total cost to rent 5 chairs and 3 tables is $33.
Let's let c represent the cost of renting one chair and t represent the cost of renting one table. We can write the following system of equations:
2c + 12t = $105
5c + 3t = $33
By solving this system, we find that the cost to rent each chair (c) is $3 and the cost to rent each table (t) is $6.
What value of x is in the solution set of 2x – 3 > 11 – 5x?
–3
0
2
4
Answer:
x = 4
Step-by-step explanation:
Solve the inequality
2x - 3 > 11 - 5x ( add 5x to both sides )
7x - 3 > 11 ( add 3 to both sides )
7x > 14 ( divide both sides by 7 )
x > 2
The only value of x greater than 2 is 4, thus
x = 4 is in the solution set
The value of x that is a solution set to the inequality is: D. 4.
How to Find the Solution Set of an Inequality?Given the an inequality such as, 2x – 3 > 11 – 5x, solve to isolate x.
2x – 3 > 11 – 5x
2x + 5x > 11 + 3
7x > 14
Divide both sides by 7
x > 14/7
x > 2
All set of the solution must be greater than 2. 4 is the only value of x that is greater than 2, so the answer is: D. 4.
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HELP ME RIGHT NOW
thank you
Answer:
no
Step-by-step explanation:
it would not make a a circle
Answer:
No! :)
Step-by-step explanation:
It wouldn't create a circle, Hope this helps xx
How does this get solved? I am a bit confused on what to do next. Help is very appreciated.
Answer:
The Proof is given below.
Step-by-step explanation:
Given:
AD ≅ BD ≅ FD ≅ GD
To Prove:
AC ≅ GE
Proof:
In Δ ADF and Δ GDB
AD ≅ DG ……….{Given}
∠ ADF ≅ ∠ BDG …………..{Vertically Opposite angles are equal}
FD ≅ BD ……….{Given}
Δ ADF ≅ Δ GDB ….{Side-Angle-Side test}
∴∠ FAD ≅ ∠ BGD .....{corresponding angles of Congruent Triangle ( c.p.c.t}
i.e ∠ CAD ≅ ∠ EGD.....{ F-C-A and B-E-G straight line}.......( 1 )
Now ,
In Δ CAD and Δ E GD
∠ CAD ≅ ∠ EGD ……….{From ( 1 ) above}
AD ≅ GD ……….{Given}
∠ ADC ≅ ∠ EDG …………..{Vertically Opposite angles are equal}
Δ ADF ≅ Δ GDB ….{Angle-Side-Angle test}
∴ AC ≅ GE .....{corresponding sides of Congruent Triangle ( c.p.c.t}
[tex]\overline {AC} \cong \overline{GE}\ \textrm{......Proved}[/tex]
What is the slope and y intercept of y-4x=-2
Answer:
Step-by-step explanation:
y=4x-2
And equation that equals 23 that has a negative in it but the answer is positive
Answer:
equation: -23 x -1
Step-by-step explanation:
two negatives equal positive
two positive equal positive
one positive and one negative equals negative
I can’t seem to figure this out help please
Answer:
10 hours
Step-by-step explanation:
you need to drop 36 degrees, so 36/4 = 9 hours
1 pm + 9 hours = 10 pm
Answer:
Step-by-step explanation:
15. The fourth graders
are going to the
science museum
© Assessment
Continued
Number of
People
Group
Mr. Vorel's Class30
Ms. Cahill's Class32
Mrs. Winter's Class29
Miss Meyer's Class28
Teachers and Chaperones 9
Groups of 8 people can see a special
exhibit on space travel. How many
groups will be needed so everyone can
see the exhibit?
Answer:
16 groups
Step-by-step explanation:
Add all the people up then divided it by 8 so now it will be 8 people in each group and there will be a total of 16 groups
30+32+29+28+9=128/8=16
The number of groups will be needed so everyone can see the exhibition is 16.
Given that, the fourth graders are going to the science museum.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Here,
Total number of people
=30+32+29+28+9
= 128
Groups of 8 people can see a special exhibit on space travel.
Number of groups = Total number of people/Number of groups
= 128/8
= 16
Therefore, the number of groups will be needed so everyone can see the exhibition is 16.
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Mary has a collection of nickels and quarters for a total of $4.90. If she has 42 coins in total, how many of each kind are there?
Answer:
14 quarters and 28 nickels
Step-by-step explanation:
System of Equations where x = number of quarters and y = number of nickels
(1) equation with value of each coin
0.25(x)+0.05(y) = 4.90
(2) total number of coins
x + y = 42
Solve system of equations using either substitution or elimination
(elimination multiplying equation 2 by -0.5)
.25(x) + 0.05(y) = 4.90
-0.05(x) - 0.05(y) = 42 * (-0.05)
(3) Resulting equation
.20(x) = 2.8
x = 14
plug x into equation 2
14 + y = 42
y = 28
There are 14 quarters and 28 nickels in Mary's collection.
how many square feet of outdoor carpet will we need for this hole?
please need help asap
disclaimer: if u do not know the answer please do not guess.please and thankyou
Answer:
36 sqaured feet
Step-by-step explanation:
24 plus 12 i believe?
Answer:
its so easy : 36 square feet
Step-by-step explanation:
add 24+12=36
2. Ryan gets a raise. He now earns $9 an hour. Ryan decides to
start saving for a car. He works 9 hours a week
Part A
How many hours does Ryan need to work to earn
enough money to buy the car as well as pay for the
taxes, title, and plates as shown? Draw bar diagrams
to help write and solve equations.
Part 8
About how many weeks will Ryan need to work to buy the car and pay
for the taxes, title, and plates? Explain.
Part
How many actual weeks does Ryan need to work to buy the car and pay
for the taxes, title, and plates? Show your computations. Explain why your
solution is reasonable.
Answer:
9 hours at 9 dollars an hour is 81 dollars so therefore he needs to work 9 weeks in order to raise the money.
Step-by-step explanation:
Without the total cost of the car and additional fees, we cannot accurately calculate the number of hours or weeks Ryan needs to work. However, the process involves dividing the total cost by his hourly or weekly wage and interpreting the results.
Explanation:In order to answer these questions, we first need to know the total cost of the car including the taxes, title, and plates. We are given that Ryan earns $9 per hour and works about 9 hours a week. However, without the total cost of the car and other fees, we cannot accurately calculate how many hours or weeks Ryan needs to work to afford the car.
Part A: Once we have the total cost, we could draw a bar diagram partitioning it into units of $9 (one hour's wage). This would visually represent the number of hours Ryan needs to work.
Part B & C: For these parts, we would also need to know the total cost. Once we have it, we divide the total cost by Ryan's weekly wage ($9/hour x 9 hours = $81/week) to get the number of weeks he needs to work. If the result is a fraction, we would round it up to the next whole number for Part B, as Ryan cannot work a fraction of a week. This provides an estimate. For Part C, we would be more precise by exactly computing the number of weeks and explaining why our solution is reasonable.
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How to calulate the area of a square with a perimeter of 60 inches
Answer:
A = 225 in²Step-by-step explanation:
The formula of an area of a square:
[tex]A=s^2[/tex]
s - side
The formula of a perimeter of a square:
[tex]P=4s[/tex]
s - side
We have a perimeter
[tex]P=60\ in[/tex]
Substitute:
[tex]4s=60[/tex] divide both sides by 4
[tex]\dfrac{4s}{4}=\dfrac{60}{4}\\\\s=15\ in[/tex]
Put it to the formula of an area of a square:
[tex]A=15^2=225\ in^2[/tex]
Answer: 225 in.²
Step-by-step explanation: First, we want to find the length of one side. Since we know that a square has 4 sides and the perimeter is 60 inches, we can set up the following equation to find the length of one side.
Let's use l as our variable to represent length.
4l = 60
To get l by itself, we need to divide by 4 on the left side of the equation. Since we divided by 4 on the left side, we must also divide by 4 on the right side. On the left side, the 4's cancel and we are left with l. On the right side, we have 60 over 4 which simplifies to 15.
This means that a side of the square is 15 inches.
Now, we are asking ourselves what is the area of a square with a side length of 15 inches.
To find the area of a square, remember that a square is a type of rectangle so we can use the following formula.
Area = length × width
However, since the length and width of a square are always equal, we use a special version of this formula to find the area of a square.
Instead of area = length × width, we say that the area of a square equals side × side or S².
Since the sides of the square each have a length of 15 inches, the area of the square is equal to (15 in.)² or (15 in) (15 in) which equals 225 in.²
Therefore, the area of the square is 225 in.².
PLEASE PLEASE PLEASE
Answer: The first one
Solve for (2-x)(x^2-4)
Answer:
-x^3+2x^2+4x-8
Step-by-step explanation:
(2-x)(x^2-4)
2x^2-8-x^3+4x
-x^3+2x^2+4x-8