Answers
Answer:
A = 2x² + x - 45
Step-by-step explanation:
The area (A) of a rectangle is calculated as
A = length × breadth , thus
A = (2x - 9)(x + 5) ← expand using FOIL
= 2x² + 10x - 9x - 45 ← collect like terms
= 2x² + x - 45
Related Questions
Tell whether xy = 8 shows direct variation, inverse variation, or neither.
Answers
Answer:
inverse
Step-by-step explanation:
y = k/x indicates inverse variation, which is the same as xy = k
in this particular problem, k = 8
HELP PLEASE 24 POINTS
Answers
Answer:
reflection
Step-by-step explanation:
it is being REFLECTED over the x axis so this makes it a reflection
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Ariel is making bracelets. She bought a 15% foot long string, and a 1243 foot long string. If each
bracelet requires 42 of a foot of string, how many bracelets can Ariel make?
Answers
Answer:
She can make 55 bracelets
Step-by-step explanation:
We have the correct question as follows;
Ariel bought a 15 1/6 foot long string, and a 12 1/3 foot long string. If each bracelet requires 1/2 of a foot long string, how many bracelets can Ariel make
we have the solution as follows
Firstly, we need to find the total length of the strings bought
We can get this by adding what was bought
That would be;
15 1/6 + 12 1/3
= 91/6 + 37/3
= (91 + 74)/6 = 27 1/2 ft
From the question, each bracelet requires 1/2 ft long
so the number of 1/2 ft long bracelets we can find will be;
27 1/2 divided by 1/2
= 55/2 * 2/1
= 55
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Answers
Answer:
The answer is B! I'm 100% sure!
Step-by-step explanation:
8% of $72.60 means 0.08*72.6 which equals 5.808. 20% of $72.60 means 0.2*72.6 which equals 14.52. 14.52+5.808=20.328. 20.328+72.6=92.928 which rounds up to $92.93. I hope this helps! Have a great rest of your day!
Answer:
She paid a total of $92.93 at the salon
Step-by-step explanation:
Well it costed $72.60 but then she did the sales tax which is 8% of 72.60 and then she did a tip which was 20% of 72.60. 8% of $72.60 is 5.81 and 20% of 72.60 is 14.52. Then you would add them to get $20.33 and then you would add the $20.33 to the $72.60 to get $92.93. SO she paid a total of $92.93 at the salon.
$5.81 + $14.52 = $20.33
$20.33 + $72.60 = $92.93
x+y<6. y<x. y>1 linear programming (graph)
Answers
Answer:
432167
Step-by-step explanation: programing
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Answers
Step-by-step explanation:
B the median is less than the mean
What 6 over 4 simplified
Answers
Manager Mark counted the number of innings each Shire Sharks pitcher pitched during the Soiltop Tournament. Calvin pitched 11 innings, Brody pitched 5 innings, Thom pitched 12 innings, Shawn pitched 7 innings, and Harley pitched 5 innings.
Find the mean absolute deviation (MAD) of the data set.
Answers
Answer:
Step-by-step explanation: 55
The cracker manufacturer is trying to determine the best dimensions for the boxes to hold their product so that they use the least amount of cardboard.
A rectangular prism with length of 6 inches, width of 4 inches, and height of 12 inches. A rectangular prism with length of 7 inches, width of 6 inches, and height of 9 inches.
Which box uses less cardboard, and how much less cardboard does it use?
A. The box on the right uses 30 inches squared less cardboard.
B. The box on the left uses 30 inches squared less cardboard.
C. The box on the right uses 90 inches squared less cardboard.
D. The box on the left uses 90 inches squared less cardboard.
Answers
Answer:
B, the box on the left used 30 in square units less cardboard.
Step-by-step explanation:
I took this question on my quiz and got it right.
Answer:
Step-by-step explanation:
Determine whether the pair of lines is parallel perpendicular or neither 26x+2y=4 and -3x+39y=-15
Answers
lol help me please, i need to turn this in before 12 also actually answer don’t just say”oh click on this link”. it’s annoying
Answers
Answer:
G. $7.75 per hour
Step-by-step explanation:
You can choose any of the three functions and divide the amount of pay by the hours worked, for example,
15.50/2=7.75
or
31/4=7.75
or
46.50/6=7.75
They're all the same rate so it doesn't really matter.
joey has 628 donuts to ship. each box holds 12 donuts.
Question 1 - How many boxes will joey need so that all of his donuts are in a box?
Question 2 - Are all of the boxes full?
Question 3 - If not, how many boxes are full and how many donuts are in the box that is not full?
Answers
Answer:
53 boxes.
No.
52 are full, 1 is not.
Step-by-step explanation:
628 divided by 12 is 52.3333333333
please help with this one. i will give brainliest
Answers
70.. not pretty sure tho
Answer:
B: 170
Step-by-step explanation:
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Answers
3(2x+4)=2(9+2x)
I need Help with this one!
And then after, how do I change it so it has no solution at all.
Answers
Answer:
x = 3
Step-by-step explanation:
3(2x+4)=2(9+2x)
6x+12=18+4x
6x-4x=18-12
2x=6
x=3
pd: i solve this as an ecuation
F(x)=-x^2+8x-2 what is the range of the function?
Answers
Answer:
Range: ( − ∞ , 14 ]
Step-by-step explanation:
pLEASE HELP ME ASAP FOR 9 AND 10
Answers
Answer:
9)
x^2 + 2x + 1 = (x + 1)^2
10)
x^2 - 6x + 9 = (x - 3)^2
Step-by-step explanation:
To complete the square, add the square of half of the x-term coefficient.
Then use the factoring of a perfect square trinomial.
a^2 + 2ab + b^2 = (a + b)^2
a^2 - 2ab + b^2 = (a - b)^2
9)
x^2 + 2x + 1 = (x + 1)^2
10)
x^2 - 6x + 9 = (x - 3)^2
The following graph shows a proportional relationship
What is the constant of proportionality between y and z in the graph?
y
6
5-
4
3+
2+
1+
6
Constant of proportionality=
Answers
Answer:
The constant of proportionality between 'y' and 'x' in the graph is 0.75
Step-by-step explanation:
The constant of proportionality is the constant ratio between two quantities that are directly proportional.
When two quantities are directly proportional, then a percentage increase in one of the quantities will result in an equal percentage increase in the other quantity, and the two quantities are therefore, increasing at the same rate to each other
From the graph we have;
When x = 0, y = 0, all graphs of directly proportional relationships have x = 0 when y = 0
However;
When x = 2, y = 1.5
When there is an 100% increase, we have;
When x = 2 + 100/100 ×2 = 4, y = 1.5 + + 100/100 ×1.5 =3
Therefore, when x = 4, y = 3
The constant of proportionality = The ratio between each 'y' and 'x' value
∴ The constant of proportionality = y/x = 1.5/2 = 3/4 = 0.75
Therefore;
The constant of proportionality between 'y' and 'x' in the graph = 0.75.
Select the correct answer.
A survey reveals that the sales of smartphones is increasing considerably. The average annual sales of smartphones, in million units, n years after the survey is conducted is modeled by function p below. The parameter b is an unknown positive base.
p(n)=1.7×b^n
Which statement is true about this situation?
A.
When the survey was initially conducted, the average sales of smartphones was 1.7 million units.
B.
If b = 1.02, the annual sales of smartphones will double in 2 years.
C.
If b = 1.45, the annual growth rate of the sales of smartphones is 145%.
D.
The average annual sales of smartphones increases by 1.7 million units every year.
Answers
Answer:
When the survey was initially conducted, the average sales of smartphones was 1.7 million units.
Step-by-step explanation:
The exponential equation is P ( n ) = 1.7 ( b )ⁿ , where n is the number of years and P ( n ) is the annual sales of smartphones and the initial sales of smartphones was 1.7 million units
What is exponential growth factor?The exponential growth or decay formula is given by
x ( t ) = x₀ × ( 1 + r )ⁿ
x ( t ) is the value at time t
x₀ is the initial value at time t = 0.
r is the growth rate when r>0 or decay rate when r<0, in percent
t is the time in discrete intervals and selected time units
Given data ,
Let the exponential equation be represented as A
Now , the value of A is
P ( n ) = 1.7 ( b )ⁿ
where , n is the number of years
And , P ( n ) is the annual sales of smartphones
Now , the value of b is the exponential growth factor
At the initial year , the number of smartphones sold is when n = 0
So , when n = 0
P ( 0 ) = 1.7 ( b )⁰
P ( 0 ) = 1.7 million units
Hence , the number of smartphones sold in initial year is 1.7 million units
To learn more about exponential growth factor click :
https://brainly.com/question/13674608
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if the radius of a circular chapatti is14 cm, what will be its area ?
Answers
Answer:
615.75216
Step-by-step explanation:
A=πr2
=π·14^2
≈615.75216
Answer:
[tex]r = 14cm \\ area = \pi \: r {}^{2} \\ area = 3.14 \times 14 \times 14 \\ area = 3.14 \times 196 \\{area = 615.44}[/tex]
I need quick help!!!
Answers
Answer:
it is 6...................
find surface area of the prism
Answers
On a tree, the trunk splits into 5 branches. Then each branch splits into 5 smaller branches, and each of those branches splits into 5 very thin branches. How many very thin branches are on the tree?
Answers
Answer:
There are 125 very thin branches.
5 branches x 5 smaller branches = 25 smaller branches25 smaller branches x 5 very thin branches = 125 very thin branches125 very thin branches in your final answer!Emerson has some yellow stickers and some green stickers. She
has 30 green stickers and the ratio of vellow stickers to green
stickers is 2.5. How many yellow stickers does Emerson have?
Answers
12
explanation:
the ratio is 2:5 so we know that for every 5 green stickers, Emerson has 2 yellow stickers.
So, we know that 5 goes into 30 6 times so all you have to do is 6 x 2 = 12
Rewrite the expression by combining like terms. 3y + 5x2 + 10x + 2x2 + 15x – 3y
Answers
Answer:
7x²+ 25x
Step-by-step explanation:
Which expression is equivalent to 6/7 divided by 3/5 ?
A. 6/7 x 5/3
B 6/7 x 5/3
C 7/6 divided 3/5
D 5/3 divided 6/7
Answers
Answer:
A.
Step-by-step explanation:
6/7 / 3/5 we invert the divisor and multiply:
= 6/7 * 5/3
in the figure, c // d. What are the measures of <1 and <2? Enter your answers in the boxes. Just write the numbers. (not the degree symbols)
Answers
Answer: <1 = 105° and <2 = 75°
Step-by-step explanation:
The information we have is the 75 degree angle already provided. Using our knowledge on transverses we know a 180 degree angle is a straight line (we happen to have two of these (c and d)). Using the corresponding angle theorem we know angle 2 is equivalent to 75 degrees. Supplementary angles refer to angles that add up to 180 degrees. Angle 1 and 2 are supplementary so from there we solve.
180 - 75 = 105
<1 = 105 degrees
Which of these expressions is equivalent to −2(x−5) ?
Multiple choice question.
A)
−2x−5
B)
−2x+5
C)
−2x+10
D)
−2x−10
Plzs Help I give someone a brainliest
Answers
Answer:
C.
Step-by-step explanation:
-2(x - 5)
= -2*x - 2*-5
= -2x + 10.
the linear function g is defined by g(x)=4x. show that g(3) and g(2) have a difference of 4.
Answers
Answer:
the answer is D.
Step-by-step explanation:
well, the y-intercept for f(x) is at
as you can see from the slope-intercept form is at 4, and it has an slope of 2/3.
for g(x), well an y-intercept is when x = 0, what is it from that table? well, is at 0,3, so when x = 0, y = 3, so no dice on that one.
c)
whenever an x-intercept occurs, y = 0, for f(x) that's at
what about the x-intercept for g(x)? well, let's check, when is y = 0? aha! at -9, 0, so when y = 0, x = -9, so no dice on that one either.
d)
well, what is the slope of g(x) anyway? well, let's pick two points off the table to get it hmmm the first two let's use,
and from a), using the slope-intercept form, we know f(x) has a slope of 2/3.
well, 2/3 is larger than 1/3, so no dice.
b)
well, you already know.
Which steps are correct to solving this?
Answers
Answer:
it will mist likely be A hope this helps