Answer:
y = 7/25x
Step-by-step explanation:
For a proportional relationship, we have
y ∞ x.
Let k = constant of proportionality = 7/25
Removing the proportionality sign, we have
y = k x
Therefore, the answer is
y = 7/25x
Instead of y= x + 7/25
So, the error is that x should be multiplied by 7/25 and not added.
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The work of a student to solve the equation 2(3x-4)= 8 + 2x + 4 is shown below.
Step 1: 2(3x-4)= 8+2x+4
Step 2: 5x6 = 12 + 2x
Step 3: 5x-2x = 12 +6
Step 4: 3x = 18
Step 5: x = 6
In which step did the student first make an error and what is the correct step?
O Step 2; 6x6 = 2(6+ x + 2)
O Step 2; 6x8 = 12 + 2x
O Step 3; 5x-2x = 12-6
O Step 3; 5x + 2x = 12 +6
100 Points to whoever answers
The graph below shows a company's profit f(x), in dollars, depending on the price of pencils x, in dollars, sold by the company:
Part A: What do the x-intercepts and maximum value of the graph represent? What are the intervals where the function is increasing and decreasing, and what do they represent about the sale and profit?
Part B: What is an approximate average rate of change of the graph from x = 2 to x = 5, and what does this rate represent?
Part C: Describe the constraints of the domain.
The average rate of the change from x = 2 to x = 5 is about 20 , The domain is constrained at x =0
What is a Function ?A function is a mathematical statement used to derive a relation between a dependent variable and an independent variable.
A) The vertical axis of the graph shows a company's profit f(x), in dollars, depending on the price of pencils x, in dollars, sold by the company , i.e is the x axis .
So the x-intercepts represent prices of the pencil at which the profit is 0
and The maximum value of the graph represents the maximum profit that can be obtained for any price of the pencil.
The Profit is increasing from (x = 0 to 5) and starts decreasing from x =5 to 10
B) From the graph
(f(5) -f(2))/(5 -2) = (160-100)/3 = 20
The average rate of the change from x = 2 to x = 5 is about 20.
This indicates that the profit will increase at a an average rate of $20 for each $1 increase in price in that interval.
(C)The domain is constrained at x =0 as there it cannot be concluded that if the price is 0 , the profit will be 0 , and we are obligated to sell the pencil at x =6 , as the maximum profits are booked at that point.
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The equation of a circle is (x-2)2+(y-6)2=25. What is the radius of the circle?
Answer:
radius = 5
Step-by-step explanation:
the equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k ) are the coordinates of the centre and r is the radius
(x - 2)² + (y - 6)² = 25 ← is in standard form
with r² = 25 ( take the square root of both sides )
r = [tex]\sqrt{25}[/tex] = 5
i need a little help -
what is the value of x in the equation
(3x+5)/2=(5x+3)/3
Answer:
x=9
Step-by-step explanation:
Triangle N P O is shown. Line O N extends through point M to form exterior angle P N M. Angle N P O is 38 degrees. Angle P O N is 39 degrees. Exterior angle P N M is x degrees.
Which statement about the value of x is true?
x > 38
x < 39
x < 77
x > 103
The measure of the exterior angle PNM will be x < 77. Then the correct option is C.
What is the triangle?A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.
Triangle NPO is shown.
Line ON extends through point M to form exterior angle PNM.
Angle NPO is 38 degrees.
Angle PON is 39 degrees.
Let the exterior angle PNM is x degrees and the interior angle PYO be y.
Then we have
38 + 39 + y = 180°
y = 103°
And we know that the sum of interior and exterior angle is a triangle is 180 degrees.
x + y < 180
103 + x < 180
x < 77
Then the correct option is C.
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Identify the arc length of BD◠ in terms of π and rounded to the nearest hundredth.
The Arc Length BD from the given diagram is; 4.09π = 12.85 in
How to find the arc length?From the attached image, we are given;
m∠APC = 92°
Now, from the principle of vertical angles being congruent, we have;
m∠APC = m∠BPD = 92°
Thus;
Arc length BD = 2π * 8 * (92/360)
Arc Length BD = 4.09π = 12.85 in
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Yui makes a list of the balances in her savings account at the end of each month. She notices that each month’s total is 5% greater than the previous month’s total. She writes a recursive formula to describe the account balances.
The Common Ratio is 1.05 . Option C is the answer.
The complete question is
Which value should she use as the common ratio?
0.05
0.5
1.05
5.0
What is common Ratio ?In a Geometric Sequence the ratio between each if the consecutive number is called the common Ratio.
Let Yui saving at the end of first month is Rs.x .
As given in the question
each month’s total is 5% greater than the previous month’s total.
Saving after second month is = First Month Total + 5% of First Month Total
= x + (5 % of x )
= x + (5*x/100)
= x + 0.05x
= 1.05x.
Yui balance is 1.05 times of Previous Month balance
Common Ratio = {Next Month }/ {Previous Month}
Common Ratio = 1.05 x / x
Common Ratio = 1.05
Therefore Common Ratio is 1.05 . Option C is the answer.
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Which algebraic expression represents the phrase “two times the quantity of a number minus 12”?
Answer:
The algebraic expression which represents the phrase “two times the quantity of a number minus 12” is : 2x- 12
Step-by-step explanation:
Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.
for example :-
3x + 4y – 7, 4x – 10, etc.
These expressions are represented with the help of unknown variables, constants and coefficients. The combination of these three (as terms) is said to be an expression. It is to be noted that, unlike the algebraic equation, an algebraic expression has no sides or equal to sign
let the quantity mentioned in the question be 'x'
therefore according to the statement the algebraic expression which represents the phrase “two times the quantity of a number minus 12” is : 2x- 12 is
⇒2x - 12 (answer)
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Find a polynomial function of least degree having only real coefficients, a leading coefficient of 1, and roots of 1-√6 , 1+ √6 , and 7-i
Step-by-step explanation:
Use this algebra 2 theorem:
If r and q are roots of a polynomial function then
the polynomial function can be expressed as
[tex](x - r)(x - q)[/tex]
Here the roots are
1- root of 6, 1+ root 6, and. 7-i so our. function can be expressed as
[tex](x - (1 - \sqrt{6} ))(x - (1 + \sqrt{6} ))(x - (7 - i))[/tex]
The first two binomials are difference off squares so the we have
[tex] {x}^{2} + x( - 1 + \sqrt{6} ) + x( - 1 - \sqrt{6} ) + ( - 5)[/tex]
[tex] {x}^{2} - 2x - 5[/tex]
The other root is (7-i).
Also note since (7-i) is a root, then (7+I) is also a root.
So
[tex](x - (7 - i)(x - (7 + i)( {x}^{2} - 2x - 5)[/tex]
[tex]( {x}^{2} - 14x + 50)( {x}^{2} - 2x - 5)[/tex]
Simplify and it gives us
[tex] {x}^{4} - 16 {x}^{3} + 73 {x}^{2} - 30x - 250[/tex]
A scale model of a statue has a height of 20 cm. The real statue has a height of 2 m. The model and statue are both made of the same stone which has a density of 1.8 g/cm3. The mass of the real statue is 104.4 kg. Find the volume of the model in cm3
The volume of the model in cm³ is 52.2 if the scale model of a statue has a height of 20 cm. The real statue has a height of 2 m
What is density?It is defined as the mass-to-volume ratio. The density indicates the object's density and is represented by the symbol. The density is measured in kilograms per cubic meter.
A scale model of a statue has a height of 20 cm.
The formula for density:
D = mass/volume
Volume = base area×hieght
104.4 kg = 104400 grams
2 m = 200 cm
Volume = Mass/D
Volume(real statue) = 104400/200 = 522 cubic cm
Scale factor = 20/200 = 1/10
Volume of model statue = 522(1/10) = 52.2 cubic cm
Thus, the volume of the model in cm³ is 52.2 if the scale model of a statue has a height of 20 cm. The real statue has a height of 2 m
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Andy spent $55 in all to purchase 20 two-dollar and five-dollar toys. How many two-
dollar toys did he buy? How many five-dollar toys did he buy?
What is the value of the expression 4 x (2a - 1) if a = 3?
16
20
23
25
Answer:
20
Step-by-step explanation:
⇒ Multiply 2 by 3
2 * 3 = 6
4 (6 - 1)
⇒ Distribute terms
4 * 5
20
Hence, the answer is 20.
can u give the direct answer of 1 and 2
[tex] {a}^{3} . \\ \\ {a}^{5}. \\ \\ {a}^{9} . \\ \\ {a}^{m + n}. \\ \\ {x}^{1} = x.\\ \\ {x}^{3}. \\ \\ {x}^{3}. \\ \\ {x}^{m - n} . \\ \\ {y}^{6} . \\ \\ {y}^{12} . \\ \\ {y}^{18} . \\ \\ {y}^{ab}. \\ \\ 1. \\ \\ 1. \\ \\ {px}^{1} = px.[/tex]
••••••••••••••••••••••••••••••••••••••[tex]343 .\\ \\ 16 .\\ \\ 3125 .\\ \\ \frac{ - 8}{27} .[/tex]
Brian invests £6600 into his bank
account.
He receives 0.6% per year compound
interest.
How much will Brian have after 6 years?
Give your answer to the nearest penny
where appropriate.
O
→ £ 1
Answer:
See Below
Step-by-step explanation:
The equation for this scenario would be ( compounded annually)
6600 ( 1 + .006)^6 = £ 6841.19
Answer:
Brian will have £6841.19 after 6 years.
Step-by-step explanation:
The compound interest formula is:
[tex]A = P( 1 +\frac{r}{100} )^{n}[/tex] ,
where A is the final amount, P is the initial (principal) amount invested (£6600), r is the interest rate (0.6%) and n is the number of years the money is kept for (6 years).
Using the formula:
[tex]A = 6600(1 + \frac{0.6}{100} )^{6}\\\\A = 6841.19[/tex]
Find the range of the function f(x) = 3x² - 2x for the domain (1, 2, 3).
Answer:
Step-by-step explanation:
What is the slope of the line segment?
1 over 4
Negative 1 over 4
4
−4
On a number line, 2.5 would be located ______. Choose all answers that make a true statement.
2.5
《----|----|----|----|----|----|----|----|----|----|----》
A. to the right of 2.52
B. between 2.45 and 2.55
C. to the left of 2.3
D. between of 2.4 and 2.6
Answer:
It is both answers B and D
simplify 26a7 + (-25a7)
Answer:
1a7
Step-by-step explanation:
26+-25=1
What are the asymptote and the y-intercept of the function shown below?
f(x) = 6(0.5)x + 2
A curve declines through (negative 0 point 5, 10), (0, 8), (1, 5), (3, 2 point 9), (4, 2 point 3) and extends linearly through (6, 2), (7, 2), (8, 2) and (9, 2) on the x y coordinate plane.
A.
asymptote: y = 2
y-intercept: (0,8)
B.
asymptote: y = 1
y-intercept: (0,5)
C.
asymptote: y = 2
y-intercept: (0,5)
D.
asymptote: y = -2
y-intercept: (0,8)
The asymptote and the y-intercept of the function is asymptote: y = 2
y-intercept: (0,8) , Option A is the answer.
What is an Asymptote ?Asymptote is a straight line that approaches the curve but does not meet even at infinite distance.
It is given that f(x) = 6 (0.5)ˣ +2
The horizontal asymptote is at y = c
y = 2
From the curve it can be seen that
The intercept of y axis is determined when x = 0
then f(0) = 6 * (0.5)⁰ + 2
f(0) = 8
Therefore the y intercept is at (0,8)
Therefore Option A is the right answer.
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Answer:
C
Step-by-step explanation:
thats what i got
$50 item discounted 30%
Answer:
$15 is the answers
Step-by-step explanation:
please mark me as brainlest
Answer:
$ 35.00 is what you pay $15.00 off original price
Step-by-step explanation:
30 % discount means you pay 70 %
$ 50 * .70 = $ 35 .00
Considering the activity series given below for metals and nonmetals, which reaction will occur? al > mn > zn > cr > fe > cd > co > ni > sn > pb > h > sb > bi > cu > ag > pd >hg > pt f > cl > br > i 2nabr i2 right arrow. 2nai br2 2fe al2o3 right arrow. 2al fe2o3 2agno3 ni right arrow. ni(no3)2 2ag pb zn(c2h3o2)2 right arrow. zn pb(c2h3o2)2
The activity series is an arrangement of species in order of reactivity.
What is the activity series?The activity series is an arrangement of species in order of reactivity. The position of a specie in the series determines the possibility of certain reactions.
The following are the fates of these reactions;
2NaBr + I2--------->2NaI + Br2 - Not possible2Fe + Al2O3 ----------> 2Al + Fe2O3 - Not possible2AgNO3 + Ni ----------> Ni(NO3)2 + 2Ag - possiblePb + Zn(C2H3O2)2 ----------> Zn + Pb(C2H3O2)2 - Not possibleLearn more about activity series:https://brainly.com/question/18080147
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My rule is:y=1/3x+11/15 find x if y=6
Answer:
x=79/5 or 15.8
Step-by-step explanation:
....................
Answer:
[tex]\frac{79}{5}[/tex]
Step-by-step explanation:
Combine [tex]\frac{1}{3}[/tex] and x.
[tex]\frac{x}{3} +\frac{11}{15}=6[/tex]
Move all terms not containing x to the right side of the equation.
[tex]\frac{x}{3}=\frac{79}{15}[/tex]
Multiply both sides of the equation by 3.
3[tex]\frac{x}{3}[/tex]=3([tex]\frac{79}{15}[/tex])
Then 3 cancels out on the left side so all is left is 3.
On the right side, you need to multiply.
3 times 79 is 237.
Now simplify and you get:
79/5
Hope this helped!
Using p as the variable for the problem below, solve for p. Submit your answer
as an inequality, using "<=" for < or ">" for ≥ if necessary. Round to two
decimal places.
Hosting a dinner party for 38 people, you plan to serve peach pie for dessert.
Each pie has 8 slices. How many pies must you buy to ensure each guest
gets 1 slice?
Answer:
Step-by-step explanation:
As host, we want to insure each guest has at least one slice of pie. We can say (1 Slice/Guest) and use this as a conversion factor. We also know each pie has 8 slices: (8 Slices/1 Pie). Since this is a conversion factor, we can invert it to (1 Pie/8 Slices). We expect 38 people and want to convert that number of people to the number of pies, p, we need.
p (pies) [tex]\geq[/tex] (38 Guests)*(1 Slice/Guest)*(1 Pie/8 Slices)
We use the [tex]\geq[/tex] sign to note that we need a minimum of pies to be sure everyone is served.
p (pies) [tex]\geq[/tex] (38 )*(1 /)*(1 Pie/8 )
Note how the units cancel:
Guests and Slices both cancel and we are left with pies as the only remaining unit, as we hoped we'd see.
p [tex]\geq[/tex] (38/8) pies
p = 4 +(6/8) pies
Since we cannot purchase 6/8 of a pie, we need to round up to 5 pies.
5 pies, at 8 slices per pie, will provide 40 servings, enough for the 38 guests.
Find the equation of the line through point (8,−9) and perpendicular to 3+8=4.
The equation of the line through the point (8,−9) and perpendicular to 3x+8y=4 is given by 8x - 3y = 91.
We are aware that any straight line's equation can be expressed as
y = mx + c,
where m denotes the slope and c denotes a constant.
Also, two perpendicular lines' slopes are the negative reciprocals of one another.
Here, the equation of the given straight line is
3x+8y=4
i.e. 8y = 4 -3x
i.e. y = (4/8) - (3/8)x
Now the negative reciprocal of - 3/8 is 8/3.
Then we can write the equation of the perpendicular line is
y = (8/3)x + c ...(1)
Since (1) passes through the point (8, -9), so we can put x = 8 and y = -9 in (1) to get the value of c.
So, -9 = (8/3)*8 + c
i.e. -9 = 64/3 + c
i.e. c = -9 -64/3 = - (27 + 64)/3 = - 91/3
(1) can be written as
y = (8/3)x - (91/3)
i.e. 3y = 8x - 91
i.e. 8x - 3y = 91
Therefore the equation of the line through the point (8,−9) and perpendicular to 3x+8y=4 is given by 8x - 3y = 91.
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Consider the transformation shown. 2 triangles are shown. The first is labeled pre-image and the second is labeled image. Both triangles have congruent angle measures. The pre-image has side lengths of 6, 10, and 8. The image has side lengths of 3, 5, and 4. Use the drop-down menus to complete the sentence. The transformation is because the preserved
The transformation is nonrigid because the segment lengths are not preserved.
How to determine the transformation?The image related to the question cannot be found. However, the question can still be solved
The given parameters are:
Triangle 1: 6, 10 and 8Triangle 2: 3, 5 and 4From the question, we understand that the side lengths are not equal.
This means that the triangles are dilated.
And the scale factor of dilation is
Scale factor = 6/3 = 10/5 = 8/4
Scale factor = 2
The scale factor of dilation is 2
Dilation is a non rigid transformation.
Hence, the transformation is nonrigid because the segment lengths are not preserved.
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Answer:
The transformation is nonrigid because the segment lengths are not preserved.
write and solve a proportion to complete the statement. Round to the nearest hundredth if necessary.
1. 6km ≈ ?mi
2. 2.5 L≈ ?gal
3. 90lb ≈ ?kg
pls help
Answer:
Step-by-step explanation:
Convert kilometer to miles:1 km = 0.62 mi
So, to convert 6 km to mi, multiply 6 by 0.62.
6km = 6* 0.62
= 3.72 mi
Convert liter to gallon:1 L = 0.26 gal
To convert 2.5 L to gallon, multiply 2.5 by 0.26.
2.5 L = 2.5 * 0.26
= 0.65 gal
Convert pound to kilogram:1 lb = 0.45 Kg
To convert 90 lb to Kg, multiply 90 by 0.45.
90 lb = 90 *0.45
= 40.5 Kg
21. What is the perimeter of the triangle?
18.2 units
18.3 units
9 units
15.5 units
(1,6)
(3, 1)
(6, 1)
Answer:
C) 15.5 units
Step-by-step explanation:
(12 ÷ 3) + 3+ (16-7) × 4
Answer: 43
Step-by-step explanation:
Step 1: Simplify inside the parenthesis
(12 ÷ 3) + 3+ (16-7) × 4
4 + 3 + 9 × 4
Step 2: Multiply 9 by 4
4 + 3 + 36
Step 3: Combine Like Terms
43
a paperweight has height 4cm and volume 38.4cm3.
a mathematically similar paperweight has height 7cm.
calculate the volume of this paperweight.
The similar paperweight has a volume of 67.2 cubic cm if the height is 7 cm.
What is volume?It is defined as a three-dimensional space enclosed by an object or thing.
As we know,
Volume = base area×height
38.4 = base area×4
base area = 38.4/4 = 9.6 square cm
A mathematically similar paperweight has a height of 7 cm.
Volume = base area×height
Volume = 9.6×7 = 67.2 cubic cm
Thus, the similar paperweight has a volume of 67.2 cubic cm if the height is 7 cm.
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