Answers
.. sale price = 0.70*x
b) x = (sale price)/0.70 . . . . . . . divide by the coefficient of x to find x.
Jerome's book was originally priced at
.. $8.96/0.70 = $12.80
Related Questions
A newspaper writer will write an article about the mean age of voters. She will estimate by selecting a sample of voters and calculating their mean age. Which method should the writer use to select the sample?randomly select 100 people who voted in the last election
select 100 people who voted in the last election and are more than 30 years old
select 100 people who voted for the most popular candidate in the last election
randomly select 100 people who read the newspaper
Answers
This will avoid bias based on age, as we would see in the second choice. It will also ensure that the people who respond are actually voters, unlike the last choice; some people that read the newspaper may not be voters at all. Additionally, some candidates are more popular among certain age groups, so to avoid bias we should not select just voters that voted for the most popular candidate.
Help.
How many pieces 3/7 of a foot each can I make out of 7/2 feet of rope?
Answers
Final answer:
To find out how many 3/7 foot pieces can be made from 7/2 feet of rope, divide the total rope length by the length of one piece, resulting in 8 whole pieces with a small amount left over.
Explanation:
The question asks how many pieces of rope, each measuring 3/7 of a foot, can be made from a total length of 7/2 feet. To find the answer, you need to divide the total length of the rope (7/2 feet) by the length of each piece (3/7 foot), which is a division problem involving fractions:
(7/2) ÷ (3/7) = (7/2) × (7/3) = 49/6.
This means you can cut the rope into 49/6 pieces. Since you can't have a fraction of a physical piece of rope, the practical answer is that you can make 8 whole pieces of rope, each 3/7 of a foot long, with a little bit of rope left over.
You can make 8 full pieces of rope that are each 3/7 of a foot long from 7/2 feet of rope, with a small leftover piece.
Explanation:The question asks how many pieces of rope measuring 3/7 of a foot each can be made from 7/2 feet of rope. To find this, we divide the total length of rope by the length of one piece:
Total length of rope: 7/2 feet
Piece length: 3/7 foot
We divide 7/2 by 3/7, which is the same as multiplying 7/2 by the reciprocal
of 3/7 (which is 7/3):
(7/2) * (7/3) = 49/6
This simplifies to 8 1/6, which means you can make 8 full pieces of rope that are each 3/7 of a foot long, with a small piece leftover.
67,456 divided by 32
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Hope this helps. :)
factor ax^2−ay−bx^2+cy+by−cx^2
Answers
Final answer:
The expression ax²-ay-bx²+cy+by-cx² can be factored by first combining like terms to get (a-b-c)x² + (b+c)y - ay and then refactoring to x²(a-b-c) + y(b+c-a).
Explanation:
The student has given the expression ax²-ay-bx²+cy+by-cx² to factor. To factor this expression, we must first combine like terms and then group the terms in a way that allows us to factor by grouping.
Combining like terms gives us: (a-b-c)x² + (b+c)y - ay. We can then factor out common factors from each group. Notice that x² terms can be grouped together, as well as the y terms.
The refactored expression is x²(a-b-c) + y(b+c-a). Depending on the specific values of a, b, and c, further factoring may be possible, but with the given information, this is the factored form of the expression.
Final answer:
To factor the expression ax² - ay - bx² + cy + by - cx², group the terms based on their factors and factor out the common factors. The factored form of the expression is x²(a - b - c) - y(a - c + b).
Explanation:
To factor the expression ax² - ay - bx² + cy + by - cx², we can group the terms based on their factors. Group ax² - bx² - cx² together, and -ay + cy + by together. Factoring out the common factors from each group, we get:
x²a - b - c) - y(a - c + b)
Thus, the factored form of the expression is x²(a - b - c) - y(a - c + b).
A candle is 7 in. Tall after burning for 1 h. The same candle is 5 1/2 in. Tall after burning for 4 h. Write a linear equation to model the height y after burning x hours
Answers
.. (1, 7) and (4, 5.5)
You can use the 2-point form of the equation for a line.
.. y = (y2-y1)/(x2-x1)*(x -x1) +y1
.. y = (5.5 -7)/(4 -1)*(x -1) +7
.. y = -0.5x +7.5
Your linear equation is y = -0.5x +7.5
I do this question yet get nothing close to the choices. Please help me and explain how I solve the areas.
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The front panel and back panel are both 30*24 = 720 square inches. The left and right panels are 24*15 = 360 square inches
Add up the front, back, left and right panel areas and we get: 720+720+360+360 = 2160
The total gray area is 2160 square inches compared to the white lid which is 450 square inches. Subtract these two values: 2160-450 = 1710
Answer: Choice B) 1710 square inches
Translate the algebraic expression below into words
g-12
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Answer:
a number 12 less than g
Step-by-step explanation:
g -12 is a number 12 less than g
What is the area for carpeting a floor?
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7. When dy/dx = (x -6)1/2, what does y equal?
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[tex] \frac{dy}{dx} = \frac{1}{2} (x - 6)[/tex]
multiply both sides by dx
[tex]dy = \frac{1}{2} (x - 6)dx[/tex]
integrate both sides of the diffrential
[tex]integral \: dy = integral \: \frac{1}{2} (x - 6)dx[/tex]
simplify and integrate to get y alone don't forget to tack on c with your indefinite integral
[tex]y = \frac{x {}^{2} }{4} - 3x + c[/tex]
Find the surface area of the pyramid.
A. 64 in.2
B. 56 in.2
C. 88 in.2
D. 118 in.2
Answers
Answer:
I believe it may be A.
Step-by-step explanation:
The formula looks complicated so I'm going to simplify it.
SA = 1/2 (4 * side of base * height) + side of base^2
Using this, we can get our answer.
1/2 (4 * 4 * 6) + 4^2
1/2 * 96 + 16
48 + 16
64
Thus the answer should be 64in. ^2
The surface area of the pyramid is 64 inch².
What is Surface area?A three-dimensional shape's surface area is the sum of all of its faces. To calculate the surface area of a shape, we add the areas of each face.
Here the pyramid has 4 triangles and one square.
Side of base square = 4 inch
Height of Triangle = 6 inch
Then, area of base
= side²
= 4²
= 16 inch²
and, Area of Triangle = 1/2 x base x height
= 1/2 x 4 x 6
= 12 inch²
So, the Surface Area of pyramid
SA = 1/2 (4 x t) + side²
= 12 x 4 + 16
= 48+ 16
= 64 inch²
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will is 23% taller than wanda so wills height is ___ % of wanda’s height
Answers
Since Wanda's height represents 100% and Will is 23% taller, then Will's height is 123% of Wanda's height.
Explanation:The question tells us that Will is 23% taller than Wanda. In terms of understanding this percentage in relation to Wanda's height, it helps to see Wanda's height as 100% because 100% represents a whole, in this case, Wanda's entire height. If Will is 23% taller, then his height is 100% of Wanda's plus an additional 23%. Thus, Will's height is 123% of Wanda's height.
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Bill Gates wants to construct an in ground swimming pool for his dog. he wants it's length to be 8 yards shorter than twice it's width. he then wants to surround it with a concrete walkway 6 yards wide. he can only afford 570 square yards of concrete. what should the dimensions be of the pool ?
Answers
Please find the attached file for a better understanding of the solution provided here:
ABCD is the swimming pool and PQRS is the extent of the swimming pool plus the concrete walkway which is 6 yards wide.
Now, we know that the length is 8 yards shorter than twice it's width. Thus,
l=2w-8
Now the area of the region, A'B'QP will be: length x width. Now, the length here is l+6+6=2w-8+12=2w+4 and width is 6.
Thus, area of the region A'B'QP is (2w+4)x6=12w+24
Likewise, the area of the region D'C'RS will similarly be 12w+24 too.
Now, the area of the region BB'C'C will be 6 x w=6w
Similarly, the area of the region AA'D'D will be 6 x w=6w
Therefore, the total area of the walk way will be:
[tex] 2(12w+24)+2\times 6w=570 [/tex]
[tex] 24w+48+12w=570 [/tex]
[tex] 36w+48=570 [/tex]
[tex] \therefore w=14.5 [/tex]
Therefore, length, l will be:
[tex] l=2w-8=2\times 14.5-8=29-8=21 [/tex]
Therefore, the dimensions of the swimming pool are:
Length, l= 21 yards and Width, w=14.5 yards
I need a written response, if you could help explain how as well that would be awesome because I'm really confused!!!
Use the slope formula to find the slope of the line passing through the given points,
(–4, 7) and (0, 8).
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if the temperature at 9:00 pm was 12 degrees farenheit,and after 6 hours the temperature dropped to 6 degrees Fahrenheit below 0,what was the rate of change in temperature per hour?
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my work :12-(3×6)=-6
9:00 = 12 degrees 10:00 = 9 degress. 11:00 = 6 degress. 12:00 = 3 degress 1:00 = 0 degress. 2:00 = -3 degress 3:00 = -6 degress
Hope this helps if so mark as brainliest
Solve the equation. z/32 + 5/8 =13/16
True Or false, And why?
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which function grows at the fastest rate for increasing values of x?
f(x)=4x2+9x
h(x)=2x
g(x)=18x
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Polynomial functions A and C are slow growers compared to the exponential function B
If you want to see this in action, make up a table of values. You'll see the y values for 2^x get very large and eventually need scientific notation
Hoped this help you buddy! :D
Answer with explanation:
The given functions in x are
1. f(x)=4 x² + 9 x
2. h(x)= 2 x
3. g(x)=18 x
To check whether the function is increasing or not , there are two ways
1. The graph of function is sloping Upwards.
2. For, two real x number ,that is if , a ≥ b, then , f(a) ≥ f(b).
All the three given function in x, are increasing because ,for increasing , x , value of function increases.
For Integral numbers,
⇒Function 1
f(x)=4 x² + 9 x
f(1)=4×1²+9×1
=4 +9
=13
f(2)=4×2²+9×2
=4 × 4 +18
=16 +18
= 34
f(2) - f(1)=34 - 13
= 21
→→Function B
h(x)= 2 x
h'(x)=2
Rate of change of function is constant, which is equal to 2.
→→Function C
g(x)=18 x
g'(x)=18
Rate of change of function is constant, which is equal to 18.
≡⇒→Rate of change of function ,f(x) is maximum among three functions.That is, f(x)=4 x² + 9 x , has highest rate of increasing, for increasing value of, x.
PLEASE HELP!
an electrician charges $80 an hour. his apprentice earns $42 an hour. the apprentice works on a job 3 hours less than the plumber. together they earn $850. how many hours did they each work?
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Milton purchases a 6-gallon aquarium for his bedroom. To fill the aquarium with water, he uses a container with a capacity of 1 quart. How many times will Milton fill and empty the container before the aquarium is full?
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The rectangle is divided into 4 equal parts. What is the name of the 4 equal parts?
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The answer would be "squares".
Reason:
A rectangle divided into four equal parts would be four squares therefore the answer is squares.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
How much money is 2/3 of 15
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factor the polynomial
3y^3−9y^2=
Answers
3y²(y-3)
HELP
Seth watched 14 episodes of his favorite TV show in 10.5
hours. He spent the same amount of time watching each episode. What is the unit rate of hours to episodes? Remember to include units! (Example: 0.3 hours per episode)
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So now, let's check if this is correct by multiplying 0.75 * 14 which should give us 10.5.
So the answer would be: 0.75 hours per episode.
find vaule of w if the sides of the triangle are w-10° w-38°. and w+36°
Answers
3w - 48 + 36 = 180
3w - 12 = 180
3w - 12 (+12) = 180 (+12)
3w/3 = 192/3
w = 64°
hope this helps
Jefferson high school is looking to expand its student parking lot by expanding the existing lot as shown below
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How can i express this decimal as a fraction? (Explain please!)
Answers
.24 is a quarter (1/4)
So we know the denominator is 4
There are three wholes of 4 -->3 1/4 (mixed fraction)
Improper fraction is easy 13/4
diane places 2 drawers with the same width and height on top of each other. what is the combined volume of the 2 drawers?
Answers
To find the volume of each shape, use the formula: V = LWH.
The small shape is: 16 x 15 x 6 = 1350
The large shape is: 24 x 15 x 6 = 2160
_________________________________________
We have the dimensions of 2nd drawer
length , L = 15 inch
Height , H = 6 inch
Breadth , B = 16 inch
so the volume of the Drawer = LBH
= 15 × 6 × 16 inch Cube
= 90 ×16 inch Cube
= 1440 inch Cube
Thanks
Melanie’s bedroom walls are 45% painted. The area of her walls totals 420 square feet. What is the number of square feet of Melanie’s walls that still need to be painted?
Answers
You can get that by find out what 45% of 420 is (420 x 45 = y, divide it by 100), and subtracting it from 420 (420 - 189 = 231).
Or you can go right ahead and calculate what is the remaining percentage, which is 55%, so (420 x 55 = y, divide it by 100).
The percentage of Melanie's walls that still needed to be painted is 55 % and the number of walls is 231 feet²
What is Percentage?A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, %
The difference between an exact value and an approximation to it is the approximation error in a data value. Either an absolute error or a relative error might be used to describe this error.
Percentage change is the difference between the measured value and the true value , as a percentage of the true value
Percentage change =( (| Measured Value - True Value |) / True Value ) x 100
Given data ,
Let the percentage of Melanie's walls that still needed to be painted be A
Now , the equation will be
The total number of walls = 420 feet²
The percentage of Melanie's walls that are painted = 45 %
So , the remaining percentage A = 100 - percentage of Melanie's walls that are painted
The percentage of Melanie's walls that still needed to be painted A = 55 %
And , the number of walls that needed to be painted = percentage of Melanie's walls that still needed to be painted A x total number of walls
On simplifying , we get
The area of walls that needed to be painted = ( 55/100 ) x 420
The area of walls that needed to be painted = 231 feet²
Hence , the area of Melanie's wall to be painted is 231 feet²
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a kitchen measures 3.75 meters by 4.2 meters, wha is tye area of the kitchen
Answers
Final answer:
The area of a kitchen measuring 3.75 meters by 4.2 meters is calculated by multiplying these dimensions, resulting in an area of 15.75 square meters.
Explanation:
The question asks for the area of a kitchen with dimensions 3.75 meters by 4.2 meters. To find the area of a rectangle, you multiply its length by its width. Therefore, the calculation for the area of the kitchen is as follows:
Area = Length × Width= 3.75 m × 4.2 m
= 15.75 square meters
Thus, the area of the kitchen is 15.75 square meters. This calculation is a basic application of geometry, specifically dealing with areas of rectangles.
2is more than a number v
Answers
2 > v should be your answer
this means that v can equal 1 or less (0, -1, -2, etc)
hope this helps
What is the equation of the line in slope-intercept form?