Answers
An equation that could be used to determine the number of books that Keiko bought include the following: B. 4b - 5 = 71.
The number of books is equal to 19 books.
How to write an equation to model this situation?In order to write a linear equation to describe this situation, we would assign a variable to the number of books, and then translate the word problem into a linear equation as follows:
Let the variable b represent the number of books.
Since Keiko bought some books for $4 and received a discount of $5 off of her total purchase, a linear equation that models the situation is given by this mathematical expression:
4b - 5 = 71
Next, we would calculate the number of books (b) as follows;
4b - 5 = 71
4b = 71 + 5
4b = 76
b = 76/4
b = 19 books.
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Related Questions
which angles are supplementary to each other? select all that apply
Answers
The answers would be:
Angle 4 and 4
They are the only two angles that add up to 180 degree
What is the answer to this, can anyone please help?
Answers
Use a graph and plug in the equation. Whatever points you get from it, that’s the answer.
Answer:
Step-by-step explanation:
Substitute all ordered pairs into respective equation:
[tex]-2-3(0)=6\\-2\neq 6[/tex]
[tex](-2,0)[/tex] is not a solution.
[tex]6-3(0)=6\\6=6[/tex]
[tex](6,0)[/tex] is a solution.
[tex]-6-3(-4)=6\\-6+12=6\\6=6[/tex]
[tex](-6, -4)[/tex] is a solution.
[tex]4-3(6)=6\\4-18=6\\-14\neq 6[/tex]
[tex](4, 6)[/tex] is not a solution.
[tex]0-3(-2)=6\\0+6=6\\6=6[/tex]
[tex](0,-2)[/tex] is a solution.
[tex]0-3(6)=6\\0-18=6\\-18\neq 6[/tex]
[tex](0,6)[/tex] is not a solution.
Hope this helps :)
PLEASE HURRY IM RUNNING LATE WITH THIS!,
Answers
Hope this help!!
what are these fractions in their simplest forms? (pic below )
Answers
Answer:
SEE BELOW.
Step-by-step explanation:
1) 5/40
gcf = 5
5 ÷ 5 / 40 ÷ 5
= 1/8
2) 2/12
1/6
3) 3/9
= 1/3
4) 4/36
1/9
5) 6/40
3/20
6) 7/49
1/7
7) 6/50
3/25
8) 8/12
4/6
2/3
9) 9/90
1/10
10) 14/32
7/16
11) 25/65
5/13
12) 18/64
9/32
13) 24/54
4/9
14) 8/60
4/30
2/15
15) 22/34
11/17
16) 35/84
5/12
17) 48/104
6/13
18) 16/128
1/8
19)36/108
= 1/3
20) 38/152
1/4
2-.1666
3.333333
4-.11111
5-.15
6-.142857
7-.12
8-.666666
9-.1
10-.43375
11-.3846
12-.28125
13-.44444444
14-.133333
15-.647059
16-.4166666
17-.4615
18-.125
19-.3333333
20-.25
I think it's like that.
HELP ILL GIVE BRAINLY!!
What is the sum of -2x³ + x-3 and x³- 3x - 4?
(a) Show your work.
(b) Is the sum of -2x³ + x-3 and x³-3x - 4 equal to the sum of x³ - 3x - 4 and
-2x³ + x-3? Explain your answer.
Answers
start by adding the all the similar number with teh exponents but do the negatives last then you need to combine like terms and yu should get 56 as your asnwer
Answer this question for me!!
Answers
Answer:
You can do:
-two trapezoids
-six triangles
-two parallelograms
hope this helps!
Michelle practiced all week to improve her typing speed. She estimated she could type 27 words per minute. When she took her typing test, she actually typed 30 words per minute. What is the percent error for Michelle's estimate?
If necessary, round your answer to the nearest tenth of a percent.
Answers
Answer:
90%
Step-by-step explanation:
90%
c. The number of Mango Crush smoothie sales in July and August combined accounted
for 75% of Mango Crush smoothies from July-December.
Answers
The solution is, the equations representative of the situation are
2.75x + 3.25y = 172.50 ... Equation 1
x + y = 60 ... Equation 2
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.
here, we have,
Explanation:
Where x = number of pineapple smoothies and
y = number of mango smoothies
Also given that, cost of pineapple smoothies = $ 2.75
and cost of mango smoothies = $ 3.25
The total sales made by the company is the addition of the sum made from mango smoothies and pineapple smoothies.
Total amount made from pineapple smoothies = cost of pineapple smoothies × number of pineapple smoothies sold
= 2.75 × x
= 2.75x
Total amount made from mango smoothies = cost of mango smoothies × number of mango smoothies sold
= 3.25 × y
= 3.25y
Therefore where total sales = $172.50
2.75x + 3.25y = 172.50
Also, since there were 60 cups used in all. Where a cup is used for a smoothie,
x + y = 60
Therefore the equations representative of the situation are
2.75x + 3.25y = 172.50
and
x + y = 60
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Complete question:
A shop sells pineapple smoothies for $ 2.75 and mango smoothies $ 3.25 . On Saturday, a total of 60 cups were used to serve smoothies, and the register showed that a total of $ 172.50 was collected from smoothie sales. Let x represent the number of pineapple smoothies and y represent the number of mango smoothies. Which system of equations represents the situation?
Mathematics 12 points!
Please Say A) B) C) D) as your answer
Answers
C is the answer to this mcq
Answer this for me!!
Answers
Answer:
i think the answer is....
Step-by-step explanation:
The answer is cm=240. I used Chegg
i need help on the last part of the question, can somebody help me please?
Answers
Answer:
Step-by-step explanation
As you know, the angles of a triangle must have a sum of 180 degrees.
Here you got the first part correct and for the second part all you need to do is write 76.2 as the angles they gave you equal 180 degrees.
76.2 + 81.7 + 22.1 = 180
A fishbowl has a regular hexagonal base with side lengths of 15 centimeters. When the hexagon is divided into six equal triangles, the height of each triangle is approximately 13 centimeters. If the fish tank is 50 centimeters tall, what is its volume?
Answers
Answer:
Quick not so accurate answer: ((15•13:)2)•50=4875m
More accurate answer: area of 1 triangle is ((15cm*15cm)*√3)/4 = (225*√3)/4 = 389.711432/4 = 97.427858cm2
to get the full hexagon multiply I by six, that is 584.567148cm2.
Then multiply that by its height that is 50cm to get the volume, that is 29228.3574cm3.
The variables y and x have a proportional relationship, and y = 5 when x = 4.
What is the value of x when y = 8?
Enter your answer in the box.
x = ___
Answers
y = kx
where k is the constant of proportionality. To find the value of k, we can use the given information that y = 5 when x = 4:
5 = k(4)
Solving for k, we get:
k = 5/4
Now that we know the value of k, we can use it to find the value of x when y = 8:
8 = (5/4)x
Solving for x, we get:
x = (8*4)/5
x = 6.4
Therefore, the value of x when y = 8 is 6.4.
Solve the inequality g + (-7) < 32 for g
Answers
Greetings from a European student ;)
g < 39
Step-By-Step:
g - 7 + 7 < 32 + 7
g < 39
Here is the number line if needed:
Please click on it to see the fill number line!
Please help me I want this done today.
Answers
B is correct. B is rights because at the end of the equation you need to divide by 1 so it all equals out.
Answer:
Choose Choice B
Step-by-step explanation:
45-19 is 26.
All of the other equations don't make sense except B
Nina can stitch 2/3 of a dress in 4 hours. If d represents the number of hours, which equation represents this proportional relationship?
A. d = 6h
B. 3d = 4h
C. d= 1/6 h
D. d = 4h
E. 1/6 d = 12h
Answers
Greetings from a European student ;)
Answer: A. D=6h.
A soccer ball accelerated at a rate of 500(m)/(s^(2)) when it was kicked by a player. The soccer ball had a mass of 0.5kg, and it reached a speed of 40(m)/(s). During this acceleration, what was the net force applied on the soccer ball to the nearest newton?
Answers
Here it is. PLEASEEEEE help....
Answers
Answer: 264 inches squared
Step-by-step explanation: 48 + 48 + 48 + 48 + 36 +36
Please help i need help with this
Answers
======================
Explanation:
Each face is a polygon representing a wall, ceiling or floor of the 3D structure. If we rotated the figure so that one triangle is flat on the ground we would have...
2 triangles for the floor and ceiling3 rectangles for the wallsThat's 2+3 = 5 faces total.
-----------
The edges connect adjacent faces. For instance, two neighboring walls are connected with an edge. There are 3 edges that connect adjacent walls. There are 3+3 = 6 more edges that connect a wall to either the ceiling or the floor.
That's 3+6 = 9 edges total.
-------------
Vertices are corner points. They are endpoints of segment edges.
The triangular floor provides 3 vertices. The triangular ceiling provides the other 3.
That's 3+3 = 6 vertices total
-------------
Extra info:
Euler's polyhedron formula is
F+V-E = 2
where
V = number of verticesF = number of facesE = number of edgesLet's use that formula for
F = 5 facesV = 6 verticesE = 9 edgesSo,
F+V-E = 2
5+6-9 = 2
11-9 = 2
2 = 2
The formula works for this polyhedron and any other polyhedron. So if you know two of the three items (say the value of F and V), you can use the formula to determine the missing third piece.
Evaluate.
10 to the power of 8
Answers
Answer:
the answer is 100000000
Answer:
100000000
Step-by-step explanation:
correct?
20 POINTS!!! (EASY AND QUICK)
A student starts a walk at (9, −12). If the student walks 5 miles north, south, east, or west, which of the following could be their location at the end of the walk? (−12, 9), (−17, 9), (14, −7), (4, −7) (4, −12), (14, −12), (9, −7), (9, −17) (9, 5), (9, −17), (14, −12), (5, −12) (5, −12), (7, −12), (9, 14), (9, −17)
Answers
Answer: (9, -7), (9, -17), (14, -12), (4, -12)
Step-by-step explanation:
If the student went north - add 5 to y value: (9, -7)
If the student went south - subtract 5 from the y value: (9, -17)
If the student went east - add 5 to the x value: (14, -12)
If the student went west - subtract 5 from the x value: (4, -12)
Answer:
(9,-7) North, (14,-12) East, (9,-17) South, (4,-12) West
hope this helps!!
BRAINLIST PLEASE
Answer this for me!!
Answers
We have divided the figure into 3 parts i.e. ; 2 rectangles and 1 triangle...
[tex] \boxed{ \red { \mathfrak{Area\: of\: figure =l \times b + l \times b + \frac{1}{2} \times b \times h}}}[/tex]
We have the dimensions:
l = 8 ftb = 7 ftl = 6 ftb = 2 fth = 1 ftb = 2 ft[tex] \blue{ \sf{Area\: of\: figure = 8 \times 7 + 6 \times 2 + \frac{1}{2} \times 2 \times 1 }}[/tex]
[tex] \blue{ \sf{Area\: of\: figure =56 + 12 + \frac{1}{ \cancel2} \times \cancel 2 }}[/tex]
[tex] \blue{ \sf{Area\: of\: figure =56 + 12 + 1}}[/tex]
[tex] \blue{ \sf{Area\: of\: figure =69 \: {ft}^{2} }}[/tex]
Hence, Option B is correct!!
Identify the least value, first quartile, median, third quartile, and greatest value of the data.
5, 1, 4, 0, 9, 0, −8, 5, 2, 4, −1, 10, 7, −5
Answers
Answer:
least value=-8, Q1=-0.5, median=3, Q3=5, greatest value=10
Step-by-step explanation:
To find the least and greatest values, we simply look at the numbers in the data set and see that the least is -8 and the greatest is 10.
To find the first quartile, median, and third quartile, we need to put the data in order from least to greatest:
-8, -5, -1, 0, 0, 1, 2, 4, 4, 5, 5, 7, 9, 10
There are 14 numbers in the data set, so the median is the average of the 7th and 8th numbers, which is:
(median) = (2+4)/2 = 3
To find the first quartile, we need to find the median of the lower half of the data set. The lower half includes the first 7 numbers:
-8, -5, -1, 0, 0, 1, 2
The median of this lower half is the average of the 3rd and 4th numbers:
(first quartile) = (-1+0)/2 = -0.5
To find the third quartile, we need to find the median of the upper half of the data set. The upper half includes the last 7 numbers:
2, 4, 4, 5, 5, 7, 9, 10
The median of this upper half is the average of the 4th and 5th numbers:
(third quartile) = (5+5)/2 = 5
So the least value is -8, the first quartile is -0.5, the median is 3, the third quartile is 5, and the greatest value is 10.
You can read. Now help me out :(
Answers
Answer: incorrect i cannot read.
anyways, the answer is c, the third bubble.
and 20 minutes
you get this from needing to find the total minutes spent, in order to do so, you need to add 25, to whatever number (or t) to equal 45
as for the minutes, you do the exact opposite, and subtract 25 from 45, to get 20
Please answer this for me!!
Answers
Answer: a=1/2bh+lw
Step-by-step explanation:
the 1/2bh works for a right-angled triangle but we have that and also part of a square or rectangle, so we added a little onto that area and boom a=1/2bh+lw is the answer.
HELPPPPPP CAN"T DO THIS please.......
Answers
1. 4/1
2. 1/2
3. 2/5
4. 1/1
Identify the least value, first quartile, median, third quartile, and greatest value of the data.
5, 1, 4, 0, 9, 0, −8, 5, 2, 4, −1, 10, 7, −5
Answers
How to calculate the median?
It should be noted that the median simply means the number in the middle when the numbers are arranged in ascending or descending order.
The median will be:
-8, -5 -1, 0, 0, 1, 2, 4, 4, 5, 5, 7, 9, 10. Here, the median will be:
= (2 + 4)/2
= 3
HELPPPPPP you well get a cookie and cake if you help me ^^
Answers
can you guys please help me? thank you so much!!!!
Also it's just that question there's no answers to pick from if anybody's confused.
Answers
Answer:
254.34 or 254.3
Step-by-step explanation:
diameter is 18
18 / 2 = 9
radius = 9
Area of Circle = π r²
r² = 9²
9² = 81
pi ≈ 3.14
3.14 x 81 = 254.34 ≈ 254.3
How can I apply converting customary units of weight in everyday life?
Please explain with specific details please this is due tomorrow
Answers
Answer:
Converting customary units of weight can be helpful in everyday life when you need to measure ingredients for cooking or baking. For example, if a recipe calls for 2 pounds of ground beef, but you only have a scale that measures in ounces, you will need to convert the measurement to ounces to make sure you use the correct amount of beef.
To convert pounds to ounces, you can use the conversion factor of 16 ounces per pound. So, to convert 2 pounds to ounces, you would multiply 2 by 16, which equals 32 ounces.
Another example is when you need to weigh yourself in kilograms, but your scale measures in pounds. To convert pounds to kilograms, you can use the conversion factor of 0.453592 kilograms per pound. So, if you weigh 150 pounds, you can convert that to kilograms by multiplying 150 by 0.453592, which equals 68.04 kilograms.
In general, knowing how to convert between customary units of weight can help you to make accurate measurements and better understand how much of a substance you are using or consuming.
Step-by-step explanation: