The function can be used to model the exponential growth or decay that occurs in real-life situations that fit this particular pattern is y = 4(-0.4)ˣ + -4
An exponential function is a mathematical function that has the form
=> y = abˣ,
where a is a constant and b is the base of the exponential.
To start, we will use the first point, (1, -1.6), to write an equation that relates x and y. Let's call the constant a in our exponential function "k". Using the point (1, -1.6), we can write the equation:
=> -1.6 = k * b¹
Next, we will use the second point, (2, -0.64), to write another equation that relates x and y. Using the point (2, -0.64), we can write the equation:
=> -0.64 = k * b²
Now that we have two equations, we can solve for the two unknowns, k and b, by dividing the two equations:
=> (-0.64) / (-1.6) = k * b² / k * b¹
b = (0.64 / -1.6)¹
b = -0.4
With b determined, we can substitute it back into one of the equations and solve for k:
=> -1.6 = k * (-0.4)¹
=> k = -1.6 / (-0.4)
=> k = 4
So our exponential function that passes through the points (1, -1.6) and (2, -0.64) and has a y-intercept of -4 is:
y = 4 * (-0.4)ˣ + -4
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find the area of the shaded region please
The area of the shaded region is 24x² - 78x + 33.
What is a square?A square is a two-dimensional figure that has four sides and all four sides are equal.
The area of a square is side².
We have,
Two squares:
Smaller square:
Side = x + 4
Larger square:
Side = 5x - 7
Now,
Area of the shaded region.
= Area of the bigger square - Area of the smaller square
= (5x - 7)² - (x + 4)²
= 25x² - 70x + 49 - x² - 8x - 16
= 24x² - 78x + 33
Thus,
24x² - 78x + 33 is the area of the shaded region.
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2. Simplify the expression
Answer:
x² + 3x - 28/
x² - 7x +12
Show your work.
Answer:
(x + 7)/(x - 3)
Step-by-step explanation:
To simplify this expression, we first factor the numerator and denominator, and then cancel any common factors:
x² + 3x - 28 = (x + 7)(x - 4)
x² - 7x + 12 = (x - 3)(x - 4)
So the expression simplifies to:
(x + 7)(x - 4) / (x - 3)(x - 4)The (x - 4)
factor in both the numerator and denominator cancels out, leaving:
x + 7 / x - 3
Therefore, the simplified expression is (x + 7)/(x - 3)
After a 20% reduction, you purchase a new love seat for $396. What was the price of the love seat before the reduction?
A) First write an equation you can use to answer this question. Use
as your variable and express any percents in decimal form in the equation.
The equation is
B) Solve your equation in part [A] to find the original price of the love seat.
Answer: The original price of the love seat was
dollars.
The equation which can be used to represent the situation is 396 = x - 0.2x
The original price of the love seat was $495.
What was the price of the love seat before the reduction?Let
Original price of the love seat= x
New price= $396
Percentage discount= 20%
396 = x - (20% of x)
396 = x - 0.2x
396 = 0.8x
divide both sides by 0.8
x = 396 / 0.8
x = $495
Hence, the equation 396 = x - 0.2x is used to solve the question and the original price is $596
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Name the two solutions of 25 = (x – 3)^2
Answer: x = 8, x = -2
Step-by-step explanation:
(x - 3)² = 25
Step 1: Take the square root on each side of the equation.
(x - 3)² = 25
√(x - 3)² = ±√25
Step 2: After taking the square root on each side of the equation, this allows you to solve for x.
x - 3 = ±5
Solution 1
x - 3 = 5
x = 5 + 3
x = 8
Solution 2
x - 3 = - 5
x = -5 + 3
x = -2
Another way to solve this problem is to multiply (x - 3)² using the FOIL methods (first, outer, inner, last) and then set it equal to 25.
(x - 3) (x - 3) = 25
x² - 3x - 3x + 9 = 25
The next step is to add like terms. After adding like terms, solve for x.
x² - 3x - 3x + 9 = 25
x² - 6x + 9 - 25 = 25 - 25
x² - 6x - 16 = 0
Last step is to factor x² - 6x - 16 = 0 so you can solve for the two solutions.
(x - 8) (x + 2) = 0
Solution 1
x - 8 = 0
x = 8
Solution 2
x + 2 = 0
x = -2
Four less than product of 22 and Vanessa's savings use the variable v to represent Vanessa's savings
Answer: 22v-4
Step-by-step explanation: four less than means subtract and product means multiply
How should this model be completed to represent 3,723 ÷ 51?
Enter your answers in the boxes.
The completed entries is added as an attachment
How to determine the entries in the boxFrom the question, we have the following parameters that can be used in our computation:
3,723 ÷ 51
Express 3,723 as 2295 + 1428
So, we have the following representation
3,723 ÷ 51 = (2295 + 1428) ÷ 51
Expand the expression
So, we have the following representation
3,723 ÷ 51 = 2295 ÷ 51 + 1428 ÷ 51
Evaluate the quotients
3,723 ÷ 51 = 45 + 28
Next, we complete the blanks (see attachment) for the completed entries
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evaluate the numerical value of the final momentum of the t-shirt using the results from parts a and b.
The final amount momentum of the t-shirt is 17.5 kg⋅m/s, which is the sum of the initial momentum of the t-shirt (2 kg⋅m/s) and the change in momentum (15.5 kg⋅m/s) due to the force applied.
The final amount momentum of the t-shirt is 17.5 kg⋅m/s, which is calculated by summing the initial momentum of the t-shirt (2 kg⋅m/s) and the change in momentum (15.5 kg⋅m/s) due to the force applied. Momentum is a vector quantity which is equal to the product of the mass and velocity of an object. In this case, the t-shirt has a mass of 4 kg and a velocity of 4 m/s. The force of 15 N applied to the t-shirt for 3 seconds causes the t-shirt to accelerate, increasing its velocity from 4 m/s to 8 m/s. This increase in velocity results in an increase in the momentum of the t-shirt from 2 kg⋅m/s to 17.5 kg⋅m/s. Thus, by calculating the change in momentum due to the applied force, we can determine the final momentum of the t-shirt.
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Challenge A family wants to rent a car to go on vacation. Company A charges $45.50 and 11¢ per mile. Company B
charges $65.50 and 14¢ per mile. How much more does Company B charge for x miles than Company A?
dollars more than Company A.
For x miles, Company B charges
(Simplify your answer. Use integers or decimals for any numbers in the expression.)
Step-by-step explanation:
The charge of Company B is $65.50 + 0.14x and the charge of Company A is $45.50 + 0.11x.
So, the difference is $65.50 + 0.14x - ($45.50 + 0.11x) = $20 + 0.03x dollars more than Company A.
Help please:))))))))
Olivia entered a baking contest. As part of the contest, she needs to demonstrate how to measure a gallon of milk if she only has a teaspoon measure. She converts the measurement using the ratios below: 4 quarts 1 gallon ⋅ 2 pints 1 quart ⋅ 2 cups 1 pint ⋅ 1 4 cup 4 tablespoons ⋅ 3 teaspoons 1 tablespoon 1 gallon 4 quarts ⋅ 1 quart 2 pints ⋅ 1 pint 2 cups ⋅ 4 tablespoons 4 1 cup ⋅ 1 tablespoon 3 teaspoons Which ratio is incorrectly written in Olivia's conversion?
Answer:
1/4 cup and 4 tablespoons
Find the range of the function y = 2x + 1 when the domain in { -2,4,6}.
Answer & Step-by-step explanation:
To get the range of the function y = 2x + 1, we need to determine the set of all possible output values (y) that the function can produce for the given domain.
When x = -2, y = 2(-2) + 1 = -3.
When x = 4, y = 2(4) + 1 = 9.
When x = 6, y = 2(6) + 1 = 13.
So, the output values (y) for the given domain { -2, 4, 6 } are -3, 9, and 13.
Hope it helps! : )in 4-7, use what you know about the sum of angles in a triangle to set up ans solve an equation to find the value of x. Then, find the measure of each missing angle
The measure of each Angle is 80, 50 and 50 degree.
What is Angle sum Property?Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.
Given:
<H= 4x- 20
and, <G = 2x
and, <I = 2x
Now, In triangle GHI using Angle Sum Property
<G+ <H+ <I= 180
4x- 20 + 2x+ 2x = 180
8x - 20 = 180
8x = 200
x= 25
So, the measure of <G = 4x- 20 = 100 -20 = 80 degree.
and, <H = <I= 2x= 2(25)= 50 degree
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Which statement correctly compares the values of the
8
88s in
2
,
7
8
1
2,7812, comma, 7, start color #9e034e, 8, end color #9e034e, 1 and
94
8
94894, start color #0c7f99, 8, end color #0c7f99?
Choose 1 answer:
The correct statement comparing the values of the 8s in 2,7812 and 94894 is that the 8 in 2,7812 has a greater value than the 8 in 94894.
This is because the value of a digit in a number is determined by its place value. In the number 2,7812, the 8 is in the hundreds place, meaning it has a value of 800. In the number 94894, the 8 is in the tens place, meaning it has a value of 80.
Therefore, the 8 in 2,7812 has a greater value (800) than the 8 in 94894 (80).
Here is the answer in HTML format:
The correct statement comparing the values of the 8s in 2,7812 and 94894 is that the 8 in 2,7812 has a greater value than the 8 in 94894.
This is because the value of a digit in a number is determined by its place value. In the number 2,7812, the 8 is in the hundreds place, meaning it has a value of 800. In the number 94894, the 8 is in the tens place, meaning it has a value of 80.
Therefore, the 8 in 2,7812 has a greater value (800) than the 8 in 94894 (80).
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A landscape architect is seeding a 4800-sq ft lawn. If the seed manufacturer recommends using 3 lb of seed per 1200 sq ft, how many pounds of seed will be needed?
The architect will need ____ ib of seed
Answer:
12 lb of seed.
Step-by-step explanation:
We need to determine the amount of seed required for a 4800 sq ft lawn.
First, we need to find out how many 1200 sq ft portions the 4800 sq ft lawn is:
4800 sq ft / 1200 sq ft/portion = 4 portions
Next, we can use the seed manufacturer's recommendation of 3 lb of seed per 1200 sq ft:
3 lb/portion * 4 portions = 12 lb
Therefore, the architect will need 12 lb of seed.
The three sides of base of triangular prism are 6cm,5cm,x cm respectively.If the length of prism is 20 and its lateral surface area is 360 square cm find the value of x
Answer: 7
Step-by-step explanation:
We know that the base sides of the triangular prism are 6cm, 5cm, and
[tex]x[/tex] cm. We also know that the length of the prism is 20.
To calculate the lateral surface area of the triangular prism, we need to use the following equation:
[tex](a + b + c)[/tex] x [tex]length[/tex]
So we can input our values, to get this:
[tex](6 + 5 + x) 20 = 360[/tex]
Then we solve the equation by the following steps:
[tex]= > 6+5+x = \frac{360}{20} = 18\\= > 11 + x = 18\\= > x = 7[/tex]
Hope this helps, if you have any further inquiries about this, please reply back. :)
need help with 6-9 please
The missing sides of the triangles are:
NUMBER 6 and 7: x = 12√2 units, y = 12√2 units
NUMBER 8 and 9: x = 25 units, y = 25√3 units
How to find the missing sides of the triangles?Trigonometry is a branch of mathematics dealing with the relationship between the ratios of the sides of a right-angled triangle with its angles.
NUMBER 6 and 7
sin 45° = x/24
x = 24 * sin 45°
x = 24 * (√2)/2
x = 12√2 units
sin 45° = y/24
y = 24 * sin 45°
y = 24 * (√2)/2
y = 12√2 units
NUMBER 8 and 9
sin 30° = x/50
x = 50 * sin 30°
x = 50 * 1/2
x = 25 units
sin 60° = y/50
y = 50 * sin 60°
y = 50 * (√3)/2
y = 25√3 units
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Find the transformation Matrix R that describes a rotation by 120° about axis from the origin through the point (1,1,1)
Answer: The transformation matrix R for a rotation of 120° about an axis from the origin through the point (1,1,1) can be calculated using the formula:
R = I + (sin(θ))U + (1-cos(θ))UU'
where θ is the angle of rotation (120° in this case), I is the identity matrix, U is a skew-symmetric matrix, and U' is its transpose. The skew-symmetric matrix can be calculated as follows:
U = [0, -z, y; z, 0, -x; -y, x, 0]
where x, y, and z are the components of the vector (1,1,1) that defines the axis of rotation.
Plugging in the values and simplifying, the transformation matrix R is:
R = [ cos(120°), -sin(120°), 0; sin(120°), cos(120°), 0; 0, 0, 1 ]
Note: cos(120°) = -1/2 and sin(120°) = √(3)/2.
Step-by-step explanation:
Estimate each product using rounding
0.67 × 322
We need help with explanation please.
5th grade math question not college apologies
The estimate of the product, using rounding, is given as follows:
0.67 x 322 = 216.
How to estimate the product?The product in the context of this problem is defined as follows:
0.67 x 322.
Multiplying the two numbers, the result is given as follows:
0.67 x 322 = 215.74.
We want to round the product to the nearest integer, hence we add one to the integer part, as the decimal part has a first digit which is greater than 4.
Thus the rounded result is given as follows:
216.
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In the diagram,
B
D
¯
is a diameter of circle A. If the slope of
B
E
⟷
is
3
2
, what is the slope of
B
D
⟷
?
Since BD is a diameter of circle A, the slope of BD is equal to -2/3.
What are perpendicular lines?In Mathematics and Geometry, perpendicular lines can be defined as two (2) lines that intersect or meet each other at an angle of 90° (right angles).
By critically observing the geometric shape, we can reasonably infer and logically deduce that line segment BD is perpendicular to line segment BE.
In Mathematics, a condition that must be met for two lines to be perpendicular is given by:
m₁ × m₂ = -1
3/2 × m₂ = -1
3m₂ = -2
Slope, m₂ = -2/3.
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Complete Question:
In the diagram, BD is a diameter of circle A. If the slope of BE is 3/2, what is the slope of BD?
Factor the following
The simplification of the given polynomial is az-bz+3b²-6ab+3a².
What is factorization?The factorization method uses basic factorization formula to reduce any algebraic or quadratic equation into its simpler form, where the equations are represented as the product of factors instead of expanding the brackets. The factors of any equation can be an integer, a variable, or an algebraic expression itself.
The given polynomial (a-b)·z+3(b-a)².
Here, (a-b)·z+3(b²-2ab+a²)
= z·(a-b)+3b²-6ab+3a²
= az-bz+3b²-6ab+3a²
Therefore, the simplification of the given polynomial is az-bz+3b²-6ab+3a².
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Similar polygons
State if the polygons are similar
Solve
6
11
12
−
(
2
4
16
+
3
2
3
)
. Start by doing the operation inside the parentheses first.
Show all your steps.
Answer: The expression inside the parentheses can be simplified as follows:
24/16 + 3/3 = 3
So, the expression becomes:
6/11 - 3/12 = 6/11 - 1/4
Now we can subtract the two fractions:
6/11 - 1/4 = 6/11 - 4/11 = 2/11
So the final answer is 2/11.
Step-by-step explanation:
Charmaine deposited $2000 into an account with a 3.9% annual interest rate, compounded quarterly. Assuming that no withdrawals are made, how long will it take for the investment to grow to $4000?
Answer:
17 years & 9 months
Step-by-step explanation:
annual rate 3.9%
every quarter = 3.9%/4 = 0.98%
compounding every quarter = (1+0.98%)
how long = assuming t quarters
2000 * (1+0.98%) ^t = 4000
solve for t
t= 71
so 71/4 = 17 years & 9 months
Describe a sequence of transformations that maps △DOG onto △CAT.
Reflect it across the x-axis, then translate it up 6 units and left 1 unit before reflecting it across the y-axis.
what is sequence?You should be aware that a collection of numbers, or "terms," is referred to as a sequence. Examples of terms include 2, 5, and 8. Some sequences can be made endlessly long by taking advantage of a particular pattern they follow. Use the example of 2,5,8 and add 3 to continue the series. There are formulas that demonstrate where to look for words within a sequence. A collection of objects that are in some order is known as a sequence in mathematics (or events). It resembles a set in that it has pieces (also called elements or terms). The total, perhaps infinite number of ordered objects are referred to as the sequence's length. the act of placing two or more objects in a logical order.
We are given the following
Δ DOG and ΔCAT
According to Chanel, the series of transformations that maps triangle ABC onto triangle DEF is as follows:
Reflect it across the x-axis, then translate it up 6 units and left 1 unit before reflecting it across the y-axis.
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Need help here please and thank you :)
the fractions with the same denominator will be 14/16 and 13/16.
What is a fraction?
It can also be written as a mixed number, which is a whole-number quotient with a proper-fraction residual, if the numerator is larger. This type of expression is used when the numerator is larger.
Divided by its denominator, any fraction can be converted to a decimal. The outcome may end at some point or one or more digits may repeat continuously.
The given fraction is given are 7/8 and 13/16.
Taking lcm of the denominator will be 16
So the fraction will be 7*2 = 14
So the fractions will be 14/16 and 13/16.
Hence the fractions with the same denominator will be 14/16 and 13/16.
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What is the contrapositive of the following statement?
If two triangles are congruent, then their corresponding angles are congruent.
A) If the corresponding angles of two triangles are congruent, then the triangles are congruent.
B) If two triangles are congruent, then their corresponding angles are congruent.
C) If two triangles are not congruent, then their corresponding angles are not congruent.
D) If the corresponding angles of two triangles are not congruent, then the triangles are not congruent.
The contrapositive statement is,
''If the corresponding angles of two triangles are not congruent, then the triangles are not congruent."
What are the corresponding angles?When two parallel lines are crossed by another line, comparable angles are the angles that are created in matching corners or corresponding corners with the transversal (i.e. the transversal).
Given:
A statement:
If two triangles are congruent, then their corresponding angles are congruent.
The contrapositive statement is,
''If the corresponding angles of two triangles are not congruent, then the triangles are not congruent."
Therefore, the D statement is correct.
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find a unit vector with a positive i component that is orthogonal to both i j and i k. (express your answers in terms of i for i, j for j and k for k.)
The unit vectors that are orthogonal to both i+j and i+k are
± (-1/√3, 1/√3,1/√3 )
What are vector equations ?
Vector equations allow for the creation of parametric curves. That is, points in space are formed for each value of the parameter by the equation of a vector, where each of its elements has a function with an independent variable that we refer to as a parameter.
a=i+j = < 1,1,0 > , b=i+k = < 1,0,1>
Let c= + < ( cos α,cos β ,cos γ )>
be the unit vectors (in opposite directions) orthogonal to a and b
the scalar product :
c.a = cos α +cos β = 0
c.b = cos α + cos γ = 0
It follows that ,
c= ± ( -cos α,cos α ,cos α )
cos α = ±1/√3
c= ± (-1/√3, 1/√3,1/√3 )
The unit vectors that are orthogonal to both i+j and i+k are
± (-1/√3, 1/√3,1/√3 )
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The unit vectors that are orthogonal to both i+j and i+k are
± (-1/√3, 1/√3,1/√3 )
What are vector equations ?
Vector equations allow for the creation of parametric curves. That is, points in space are formed for each value of the parameter by the equation of a vector, where each of its elements has a function with an independent variable that we refer to as a parameter.
a=i+j = < 1,1,0 > , b=i+k = < 1,0,1>
Let c= + < ( cos α,cos β ,cos γ )>
be the unit vectors (in opposite directions) orthogonal to a and b
the scalar product :
c.a = cos α +cos β = 0
c.b = cos α + cos γ = 0
It follows that ,
c= ± ( -cos α,cos α ,cos α )
cos α = ±1/√3
c= ± (-1/√3, 1/√3,1/√3 )
The unit vectors that are orthogonal to both i+j and i+k are
± (-1/√3, 1/√3,1/√3 )
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Mary decides to get phone service from T-Mobile. T-Mobile offers her a plan where she will have to pay $40 per month with a $35 activation fee. What’s her equation using y=mx+b
Answer:
y=40x+35
Step-by-step explanation:
After 0 months, she still needs to pay the first $35. This means that this is her y-intercept, and in the formula “y=mx+b”, it would go in the “b” place. Then x would mean how many months have passed, so therefore 40 would go into the “m” place. If you put that together, it looks like “y=40x+35”.
Identifying parallel and perpendicular lines from equations
Line 1 and line 3 are parallel and line 1 and line 2 are perpendicular.
What is a System of Equations?
A system of equations in algebra is made up of two or more equations that are solved together. "A group of equations satisfied by the same set of variables are called a system of linear equations. Finding the values of the variables employed in the system of equations is the first step towards solving it. While maintaining the balance of the equations on both sides, we compute the values of the unknown variables. Finding a variable whose value makes the condition of all the given equations true is the primary goal of solving an equation system.
y = -5/2 x -1
4x-10y = 8
2y = -5x+7
line 1, m = -5/2
line 2, m = 2/5
line 3, m -5/2
Hence, Line 1 and line 3 are parallel and line 1 and line 2 are perpendicular.
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Quick Answer Please. oops its Reading my bad
Answer: C
Step-by-step explanation:
Again, let's use elimination.
Does it suggest a different interpretation than the rest of the article? Yes, because it indicates there is a flaw in saying that the data shows human and chimp similarities.
Is it a reason for pursuing DNA Research? Nope.
Does it specifiy the extent of similarity? Yup.
SO now we are down to A and C as possible choices.
C is the answer, because while the data can be used to produce a different interpretation, its purpose in developing the main idea is purely specification.