Answer:
Approximately 92.51.
Not sure what the desired rounding is since it isn't listed.
Step-by-step explanation:
So the first vector G is 40.3 m long in a -35 degree direction.
Lat's find the components of G.
[tex]G_x=40.3\cos(-35)=33.0118[/tex].
[tex]G_y=40.3\sin(-35)=-23.1151[/tex].
The second vector H is 63.3 m long in a 270 degree direction.
[tex]H_x=63.3\cos(270)=0[/tex].
[tex]H_y=63.3\sin(270)=-63.3[/tex].
The resultant vector can be found by adding the corresponding components:
[tex]R_x=G_x+H_x=33.0118+0=33.0118[/tex]
[tex]R_y=G_y+H_y=-23.1151+(-63.3)=-86.4151[/tex]
Now we are asked to find the magnitude of [tex](R_x,R_y)[/tex] which is given by the formula [tex]\sqrt{R_x^2+R_y^2}[/tex].
Since [tex](R_x,R_y)=(33.0118,-86.4151)[/tex] then the magnitude is [tex]\sqrt{(33.0118)^2+(-86.4151)^2}=\sqrt{8557.34844}=92.51[/tex].
The magnitude of the sum of vector G (40.3m, -35°) and vector H (63.3m, 270°) is found by breaking each vector into its components, summing these components, and using the Pythagorean theorem. The magnitude of the sum of these vectors is approximately 92.1 m.
Explanation:Given that vector G has a magnitude of 40.3 m and is in a -35.0° direction, and vector H has a magnitude of 63.3 m and is in a 270° direction, the sum of these vectors can be determined. This sum is found by breaking each vector into its component forms, adding the components together, and then using the Pythagorean theorem to find the magnitude of the result.
For vector G: Gx = 40.3m * cos(-35) = 33m and Gy = 40.3m * sin(-35) = -23.14m. For vector H: Hx = 0 (as sin(270) equals 0) and Hy = -63.3m (as sin(270) equals -1). The sum vector S = (Gx+Hx, Gy+Hy) = (33m+0 , -23.14m-63.3m) = (33m, -86.44m). Thus, to find the magnitude of the sum of the vectors, we use the Pythagorean theorem: |S| = sqrt((33m)² + (-86.44m)²) = 92.1 m (rounded to 1 decimal place).
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An animal shelter estimates that it costs about $6 per day to care for each dog. If y represents the total cost of caring for a single dog for x days, which table models the situation?
Answer:
x y
6 36
9 54
12 72
Step-by-step explanation:
The options are shown in the pictures attached.
Data:
a single dog costs about $6 per day
y-variable represents the total cost
x-variable represents days
So, 1 day costs $6, 2 days costs 2*$6 = $12, 3 days costs 3*$6 = $18 and so on. Then, the table is:
x y
6 6*6 = 36
9 9*6 = 54
12 12*6 = 72
Using the discriminant, how many real solutions does the following quadratic
equation have?
x^2 - 8x + 16 = 0
A. Three real solutions
B. No real solutions
C. Two real solutions
D. One real solution
Answer:
D one real solution
Step-by-step explanation:
x^2 - 8x + 16 = 0
This is in the form
ax^2 +bx + c = 0
so we can use the discriminant to determine the number of solutions
b^2 -4ac
(-8)^2 -4(1)(16)
64 - 64
0
Since the discriminant is zero, there is one real solution.
what is
x+y+z=8
3x+y-z=4
4x-y+2z+6
[1, 4, 3]
Solve for the first variable in one of the equations, then substitute the result into the other equation.
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***By the way, in the final line, that "+" next to the 6 should be replaced with an "=".
which of the following is most likely the next step in the series?
HELP ME FAST PLEASE!!!!!!APEX
Answer:
A is most likely the next step in the series
Step-by-step explanation:
Each step, the number of sides is increasing by 1.
4,5,6 means that the next number of sides would be 7. Option A has 7 sides.
Don’t understand this word problem!!!
Answer:
b) L+S=80 and 2.75L+3.25S=245
Step-by-step explanation:
L stands for larger softballs. S stands for smaller softballs.
If you are ordering 80 softballs, then L and S represent the number of softballs of each one (large or small) to get a total of 80.
2.75 is the price of a large softball
3.25 is the price of a small softball.
You multiply the amount of each softball to how many of those kinds of softballs you get, you will then get the sum of the amount you ordered for 80 softballs: 245 dollars.
So thus the answer is B
Answer:
L+S=80
2.75L+3.25S=245
Choice B
Step-by-step explanation:
Larger ball costs $2.75.
Smaller ball costs $3.25.
You order a total of 80 softballs for $245.
So L is for number of large balls.
S is for number of small balls.
So we have 80 balls in all, some are small and some are large. This means the number of large plus the number of small equals 80.
So we have this equation L+S=80.
Now if you buy L balls, you spend 2.75 times L on large balls altogether.
If you buy S balls, you spend 3.25 times S on small balls altogether.
So together you spend 2.75L+3.25S. They gave us that this amount should be equal to 245.
So this equations is 2.75L+3.25S=245
We are looking for the choice that contains these equations:
L+S=80
2.75L+3.25S=245
Write 3 different ways you can express multiplication using the problem 8 times a number
Answer:
1) 8x5
2) 8x10
3)8x20
Which equation is equivalent to 2^4x = 8^x-3?
2^4x = 2^2x-3
2^4x = 2^2x-6
2^4x = 2^3x-3
2^4x = 2^3x-9
Answer:
[tex]\large\boxed{2^{4x}=2^{3x-9}}[/tex]
Step-by-step explanation:
[tex]8=2^3\to 8^{x-3}=(2^3)^{x-3}\qquad\text{use}\ (a^n)^m=a^{nm}\\\\=2^{3(x-3)}\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\=2^{(3)(x)+(3)(-3)}=2^{3x-9}[/tex]
If you want a solution of this equation:
[tex]2^{4x}=8^{x-3}\\\\2^{4x}=2^{3x-9}\iff4x=x-3\qquad\text{subtract}\ x\ \text{from both sides}\\\\3x=-3\qquad\text{divide both sides by 3}\\\\x=-1[/tex]
Answer: the correct option is
(D) [tex]2^{4x}=2^{3x-9}.[/tex]
Step-by-step explanation: We are given to select the correct equation that is equivalent to the following equation :
[tex]2^{4x}=8^{x-3}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]
Equivalent equations means two equations that can be obtained from one another using some properties of formula.
We will be using the following formula :
[tex](a^b)^c=a^{b\times c}.[/tex]
From equation (i), we have
[tex]2^{4x}=8^{x-3}\\\\\Rightarrow 2^{4x}=(2^3)^{x-3}\\\\\Rightarrow 2^{4x}=2^{3\times(x-3)}\\\\\Rightarrow 2^{4x}=2^{3x-9}.[/tex]
Thus, the required equivalent equation is [tex]2^{4x}=2^{3x-9}.[/tex]
Option (D) is CORRECT.
Make a table with the domain of {2,3,4,5,6} and draw a graph of the absolute value function y = 2|x-4| + 3.
Answer:
Table for y = 2|x-4| + 3 on domain {2,3,4,5,6} is given as:
x y
2 2|x-4| + 3 = 2|2-4| + 3 = 7
3 2|x-4| + 3 = 2|3-4| + 3 = 5
4 2|x-4| + 3 = 2|4-4| + 3 = 3
5 2|x-4| + 3 = 2|5-4| + 3 = 5
6 2|x-4| + 3 = 2|6-4| + 3 = 7
The graph of the absolute value function y = 2|x-4| + 3 for the given domain is attached.
Step-by-step explanation:
The absolute value parent function, written as function(x) = | x |, is defined as:
|x| = x and |-x| = x
In our case;
For x = 2
y = 2|x-4| + 3
= 2|2-4| + 3
= 2|-2| + 3
= 2*2 + 3
= 4 + 3
= 7
Similarly, for all other values of x in the given domain, value of y can be calculated.
Answer:
In the attachment.Step-by-step explanation:
[tex]|a|=\left\{\begin{array}{ccc}a&for\ a\geq0\\-a&for\ a<0\end{array}\right[/tex]
Put each value of x from the set {2, 3, 4, 5, 6}
to the equation y = 2|x - 4| + 3:
x = 2 → y = 2|2 - 4| + 3 = 2|-2| + 3 = 2(2) + 3 = 4 + 3 = 7 → (2, 7)
x = 3 → y = 2|3 - 4| + 3 = 2|-1| + 3 = 2(1) + 3 = 2 + 3 = 5 → (3, 5)
x = 4 → y = 2|4 - 4| + 3 = 2|0| + 3 = 2(0) + 3 = 0 + 3 = 3 → (4, 3)
x = 5 → y = 2|5 - 4| + 3 = 2|1| + 3 = 2(1) + 3 = 2 + 3 = 5 → (5, 5)
x = 6 → y = 2|6 - 4| + 3 = 2|2| + 3 = 2(2) + 3 = 4 + 3 = 7 → (6, 7)
Mark the points in the coordinates system.
The domain is only five numbers, therefore the graph of this function is only five points.
Lisa's barn has 20 animals that have 62 legs in total. She only has cows and geese. How many cows and how many geese does she have?
Answer:
9 geese
11 cows
Step-by-step explanation:
Say x is cows, and y is geese.
x + y = 20 animals
x * 4 + y * 2 = 62
x = 20 - y
(20 - y) * 4 + y * 2 = 62
80 - 4y + 2y = 62
- 2y = -18
y = 9 geese
x = 20 - 9 = 11 cows
Lisa has 11 cows and 9 geese.
To solve the problem involving Lisa's barn with 20 animals having 62 legs in total, and knowing she only has cows and geese, we can use a system of linear equations. We can denote the number of cows as c and the number of geese as g. Cows have 4 legs and geese have 2 legs.
We can then set up the following equations based on the information given:
Cows and geese equation: c + g = 20 (since there are 20 animals in total)
Legs equation: 4c + 2g = 62 (because cows have 4 legs and geese have 2 legs)
Now, let's solve the system of equations:
Multiply the first equation by 2 to match the number of geese legs in the second equation: 2c + 2g = 40
Subtract the modified first equation from the legs equation: (4c + 2g) - (2c + 2g) = 62 - 40, which simplifies to 2c = 22, and then c = 11. Lisa has 11 cows.
Substitute the number of cows back into the first equation to find the number of geese: 11 + g = 20, which leads to g = 9. Lisa has 9 geese.
Therefore, Lisa has 11 cows and 9 geese.
Your income last year was $27,000 from your main job, $2,200 from a part time job and $600 from interest earned on investments. If your state income tax is 3% of your gross income, what was your state tax for last year?
Answer:
$894
Step-by-step explanation:
$27,000+$2,200+$600= $29,800
$29,800*0.03=$894
What is the value of b in the equation below: 5^6/5^2=a^b
Step-by-step explanation:
for x^a/x^b = x^(a-b)...eqn 1
thus for 5^6/5^2 = a^b,
if a = 5, following eqn 1...
then b = 6-2 = 4
If f(x)=2x^2+3x−4, and g(x)=−8x−4, what does f(x)+g(x) equal?
f(x)=2x^2+5x+8
f(x)=2x^2−5x−8
f(x)=2x^2+11x−8
f(x)=2x^2+5x
[tex]\( f(x) + g(x) \) equals \( 2x^2 - 5x - 8 \).[/tex] (option b)
To find [tex]\( f(x) + g(x) \)[/tex], we need to add the functions f(x) and g(x):
[tex]\[ f(x) + g(x) = (2x^2 + 3x - 4) + (-8x - 4) \][/tex]
[tex]\[ = 2x^2 + 3x - 4 - 8x - 4 \][/tex]
[tex]\[ = 2x^2 + (3x - 8x) + (-4 - 4) \][/tex]
[tex]\[ = 2x^2 - 5x - 8 \][/tex]
Therefore, the correct answer is:
[tex]\[ f(x) = 2x^2 - 5x - 8 \][/tex]
Complete question: If f(x)=2x²+3x−4, and g(x)=−8x−4, what does f(x)+g(x) equal?
a-f(x)=2x²+5x+8
b-f(x)=2x²−5x−8
c-f(x)=2x²+11x−8
d-f(x)=2x²+5x
HELP ME! Z-135=41,show your work
Answer:
[tex]\huge \boxed{z=176}\checkmark[/tex]
Step-by-step explanation:
Add by 135 from both sides of equation.
[tex]\displaystyle z-135+135=41+135[/tex]
Simplify, to find the answer.
[tex]\displaystyle41+135=176[/tex]
[tex]\huge \boxed{z=176}[/tex], which is our answer.
Hope this helps!
Answer: Z=176
Step-by-step explanation: All you need to do is isolate z. Add 135 to each side.
135+41=176=Z
Which ratio is equivalent to 8:6
Answer:
4:3
Step-by-step explanation:
You divide 8 and 6 by 2 to simplify it
A, B, C, and D have the coordinates (-8, 1), (-2,4),(-3,-1) and (-6,5), respectively. Which sentence about the points is true?
A. A, B, C, and D lie on the same line
B. AB and CD are perpendicular lines.
c. Ag and are parallel lines.
D. AB and CD are intersecting lines but are not perpendicular.
E. AC and B are parallel lines.
Answer:
B. [tex]^\leftrightarrow_{AB}[/tex] and [tex]^\leftrightarrow_{CD}[/tex] are perpendicular lines.
Step-by-step explanation:
We can quickly plot the points in the cartesian plane as shown in the attachment.
A visual representation will help us see that A,B,C, and D do not lie on the same line.
The slope of AB is [tex]\frac{4-1}{-2--8} =\frac{3}{6}=\frac{1}{2}[/tex]
The slope of CD is [tex]\frac{5--1}{-6--3} =\frac{6}{-3}=-2[/tex]
The two slopes are negative reciprocals of each other.
It is true that line AB and line CD are perpendicular.
These two lines cannot be perpendicular and parallel at the same time.
It is also not possible that, the two lines are perpendicular but will not intersect
Therefore the correct choice is B
Answer:
B
Step-by-step explanation:
plato/edmentum
Select the correct answer.
Which set of vertices forms a parallelogram?
A.
A(2, 4), B(3, 3), C(6, 4), D(5, 6)
B.
A(-1, 1), B(2, 2), C(5, 1), D(4, 1)
C.
A(-5, -2), B(-3, 3), C(3, 5), D(1, 0)
D.
A(-1, 2), B(1, 3), C(5, 3), D(1, 1)
Answer:
Step-by-step explanation:
Option 3 is correct
A(-5, -2), B(-3, 3), C(3, 5), D(1, 0) set of vertices forms a parallelogram
Step-by-step explanation:
Slope formula is given by:
slope = y2-y1
over x2-x1
Properties of the parallelogram:
Opposite sides are equal and parallel.Diagonals are unequalSlope of the opposite sides are equal.Opposite angles are equal.Consider the set of vertices:A(-5, -2), B(-3, 3), C(3, 5), D(1, 0)
⇒Slope of AB =Slope of CD and Slope of BC = Slope of AD
By property of parallelogram:
⇒A(-5, -2), B(-3, 3), C(3, 5), D(1, 0) set of vertices forms a parallelogram
Answer: OPTION C.
Step-by-step explanation:
A parallelogram is defined as a quadrilateral which has two pairs of parallel sides.
Attached is shown in the parallelogram obtained by plotting the vertices provided in Option C.
If that figure is a parallelogram, then:
[tex]Slope\ AB=Slope\ CD\\\\Slope\ BC=Slope\ AD[/tex]
Let's check this:
[tex]Slope\ AB=\frac{-2-3}{-5-(-3)}=\frac{5}{2}[/tex]
[tex]Slope\ CD=\frac{0-5}{1-3}=\frac{5}{2}[/tex]
[tex]Slope\ BD=\frac{3-5}{-3-3}=\frac{1}{3}[/tex]
[tex]Slope\ DA=\frac{-2-0}{-5-1}=\frac{1}{3}[/tex]
Therefore, the set of vertices that forms a parallelogram is:
[tex]A(-5, -2), B(-3, 3), C(3, 5), D(1, 0)[/tex]
At a certain distance fro a pole, the angle of elevation to the top of the pole is 28 degrees. IF the pole is 6.3 feet tall, what is the distance fro the pole?
Answer:
The distance from the pole is 11.8 ft
Step-by-step explanation:
Let
x------> the distance from the pole
we know that
The tangent of angle of 28 degrees is equal to divide the opposite side to angle of 28 degrees ( the height of the pole) by the adjacent side to angle of 28 degrees ( the horizontal distance from the pole)
so
tan(28°)=6.3/x
Solve for x
x=6.3/tan(28°)=11.8 ft
Final answer:
The distance from the pole is found by using the tangent function with the given angle of elevation (28 degrees) and the pole's height (6.3 feet), resulting in a distance of approximately 12.04 feet.
Explanation:
To calculate the distance from the pole given the angle of elevation and the height of the pole, you can use trigonometric functions. The angle of elevation is 28 degrees and the height of the pole is 6.3 feet. You can use the tangent function, which relates the angle of a right triangle to the ratio of the opposite side to the adjacent side.
Let d represent the distance from the pole. The tangent of the angle of elevation (28 degrees) equals the opposite side (6.3 feet) over the adjacent side (distance d).
tan(28°) = 6.3 / d
To find d, rearrange the equation: d = 6.3 / tan(28°). Using a calculator for tan(28°), you obtain d ≈ 12.04 feet.
Therefore, the distance from the pole is approximately 12.04 feet.
The expression square root 3x is equivalent to the expression x square root 3
True
False
Answer:
Second option: False
Step-by-step explanation:
We need to remember this property:
[tex]\sqrt[n]{x^n}=x^{\frac{n}{n}}=x[/tex]
In this case we have the following expressions provided in the exercise:
[tex]\sqrt{3x}[/tex] and [tex]x\sqrt{3}[/tex]
Based on the property mentioned before the expression [tex]\sqrt{3x}[/tex] cannot be simplified. So 3 and [tex]x[/tex] stays inside the square root.
Therefore, the conclusion is: The expression [tex]\sqrt{3x}[/tex] is not equivalent to the expression [tex]x\sqrt{3}[/tex]
Deciphering the expressions reveals that 'square root 3x' is not equivalent to 'x square root 3'. They interpret differently on the terms inside and outside of the square root, thus they are not the same.
Explanation:The statement 'the expression square root 3x is equivalent to the expression x square root 3' is False. To understand why, we need to understand the properties of square roots and multiplication. The expression square root 3x means that the square root is being taken over the entire product of 3x. This is not the same as x square root 3, where the square root is only being applied to 3, and then that result is being multiplied by x.
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What is the equation of the line that passes through the point (-1, -3) and has a slope of -5?
A) y=-5x-8
B) y=-5x-16
C) y=-5x+16
D) y=-5x+8
Answer:
A) y = -5x - 8Step-by-step explanation:
The point-slope form of an equation of a line:
[tex]y-y_1=m(x-x_1)[/tex]
m - slope
(x₁, y₁) - point on a line
We have the slope m = -5, and the point (-1, -3). Substitute:
[tex]y-(-3)=-5(x-(-1))\\\\y+3=-5(x+1)[/tex]
Convert to the slope-intercept form (y = mx + b):
[tex]y+3=-5(x+1)[/tex] use the distributive property
[tex]y+3=-5x-5[/tex] subtract 3 from both sides
[tex]y=-5x-8[/tex]
(–1) + 5 – (–6) – 5 =
Answer:
5
Step-by-step explanation:
(-1) + 5 - (-6) - 5 =
v
4 - (-6) - 5 =
v
10 - 5 =
v
5
Given that (-3,7) is on the graph of f(x), find the
corresponding point for the function f- 3/4x
Answer:(4, 7)
Step-by-step explanation:
This question is about changing the coordinates of the function.
They want you to choose a value of x that will make the sentence inside the function (-3x/4) equal to -3.
-3 x / 4 = -3
x = 4
Hence, the correspondig point is (4, 7)
Anja divides (8x3 - 36x2 + 54x - 27) by (2x - 3) as shown below. What error does Anja make?
4x2 - 12x+9
2x-3) 8x2 – 36x2 + 54x-27
8x3–1282
-24x2 + 54 x
-24x2 + 36%
18x-27
18x+27
-54
She makes a subtraction error
She makes an error choosing the x-term in the quotient.
She makes a multiplication error
She makes an error rewriting the problem in long division
Answer:
There is a multiplication error
Step-by-step explanation:
Long division method is used to divide greater number by a smaller number.
Here, greater number is known as the dividend and smaller number is known as divisor.
As per division algorithm,
Dividend = Divisor [tex]\times[/tex] quotient + remainder
Here, dividend = [tex]8x^3-36x^2+54x-27[/tex]
Divisor = [tex]2x-3[/tex]
Here, we need to find the error in the long division .
In step:
[tex]18x+27[/tex] , it should be 18x-27 as [tex]-3\times 9=-27[/tex] not +27
So, there is a multiplication error .
The correct option is c) she makes a multiplication error.
Step-by-step explanation:
Given :
Dividend = [tex]8x^3-36x^2+54x-27[/tex]
Divisor = [tex]2x-3[/tex]
Solution :
In step [tex]18x +27[/tex] there is mistake. It should be [tex]18x - 27[/tex] because [tex]-3 \times 9= -27[/tex] not +27.
Therefore the correct option is c) she makes a multiplication error.
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Round 20.155 to the nearest tenth
Answer:
20.2
The thousandth position doesn't affect the rounding of the numbers. Since the hundredth position contains a 5, you will round up, meaning the tenth position will change from a 1 to a 2.
Answer:
20.2
AMG Mark as brainlist!
1. From a total yearly budget of
$360,000, the Kimball Foundation
spends $30,000 on leasing office
space. What is the ratio of dollars
spent on office space to dollars spent
on other costs?
A. 12:1
B. 11:1
C. 1:11
D. 1:12
Answer:
Option C. 1:11
Step-by-step explanation:
Let
x-----> dollars spent on office space
y ----> dollars spent on other costs
we know that
x+y=$360,000 -----> equation A
x=$30,000 ----> equation B
substitute equation B in equation A and solve for y
30,000+y=360,000
y=360,000-30,000=$330,000
Find the ratio of dollars spent on office space to dollars spent on other costs
Divide the dollars spent on office space by the dollars spent on other costs
so
x/y
substitute
30,000/330,000=1/11
A group of friends go to the movies. The function h(x) represents the amount of money spent, where x is the number of friends at the movies. Does a possible solution of (6.5, $95.25) make sense for this function? Explain your answer.
This answer does not make sense because you can't buy half a movie ticket
Answer: If h(x) represents the amount of money spent and x the amount of friends, then we can write it as in a pair as (x, h(x))
Then the pair given is (6.5, $92.25)
Here you see a problem, x is 6.5, knowing that x represents the amount of friends, this is a problem because you need to have a whole number ( you can't have a 0.5 of a friend)
So the domain of h(x) is only the natural numbers, then the possible solution of (6.5, $92.25) doesn't make sense because 6.5 is not a natural number.
Which expression is equivalent to (2mn)^4/6m^-3n^-2? assume m and n cannot equal 0
Answer:
=8/3m⁷n⁶
Step-by-step explanation:
Given the expression (2mn)⁴/6m⁻³n⁻², we first solve the numerator
(2mn)⁴ = 16m⁴n⁴
The new expression becomes 16m⁴n⁴/6m⁻³n⁻²
We now divide the coefficients and the exponents as follows:
=16/6ₓ(m⁴/m⁻³)×(n⁴/n⁻²)
Division between indices to the same base we subtract the powers.
4-⁻3=7
4-⁻2=6
=8/3m⁷n⁶
Answer:
the asnwer is A
Step-by-step explanation:
HELP ASAP!!!! Please tell me the steps and answer on how to do it.
Answer:
71.4
Step-by-step explanation:
For this, we will use Heron's Formula, or
[tex]\sqrt{p(p-a)(p-b)(p-c)}[/tex],
with p as the perimeter divided by 2, and a, b, and c are the side lengths.
Plugging our values in, (11.6+20+13)/2 = 22.3 = p, and
[tex]\sqrt{p(p-a)(p-b)(p-c)}[/tex] = [tex]\sqrt{5103.8679} =71.4[/tex] rounded to the nearest tenth
Which sequence is modeled by the graph below? (1 point) coordinate plane showing the points 1, 5; 2, 0.5; and 3, 0.05 an = 5(−10)n − 1 an = 0.5(10)n − 1 an = one tenth (5)n − 1 an = 5( one tenth )n − 1
Answer:
[tex]\large\boxed{a_n=5\left(\dfrac{1}{10}\right)^{n-1}}[/tex]
Step-by-step explanation:
Check:
[tex]n=1\\\\a_1=5\left(\dfrac{1}{10}\right)^{1-1}=5\left(\dfrac{1}{10}\right)^0=5(1)=5\qquad\bold{CORRECT}\ (1,\ 5)\\\\n=2\\\\a_2=5\left(\dfrac{1}{10}\right)^{2-1}=5\left(\dfrac{1}{10}\right)^1=5\left(\dfrac{1}{10}\right)=\dfrac{5}{10}=0.5\qquad\bold{CORRECT}\ (2,\ 0.5)\\\\n=3\\\\a_3=5\left(\dfrac{1}{10}\right)^{3-1}=5\left(\dfrac{1}{10}\right)^2=5\left(\dfrac{1}{100}\right)=\dfrac{5}{100}=0.05\qquad\bold{CORRECT}\ (3,\ 0.05)[/tex]
[tex]a_{n}[/tex] [tex]= 5 (\frac {1}{10} )^{n-1}[/tex]
Mathematical sequences are the set of numbers that makes a pattern or can be simple and complicated, finite and infinite. Explore sequences, terms in a sequence, and the different kinds of mathematical sequences, including the famous Fibonacci sequence.
Check:
n=1
[tex]a_{1} = 5 (\frac {1}{10} )^{1-1} = 5 (\frac {1}{10} )^{0} = 5 (1)=5[/tex] True (1,5)
n=2
[tex]a_{2} = 5 (\frac {1}{10} )^{2-1} = 5 (\frac {1}{10} )^{1} = 5 \frac{1}{10} = 0.5[/tex] True (2, 0.5)
n=3
[tex]a_{3} = 5 (\frac {1}{10} )^{3-1} = 5 (\frac {1}{10} )^{2} = 5 \frac{1}{100} = 0.05\\[/tex] True (3, 0.05)
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A scale model of a rectangle building lot measures 7 ft by 5ft. Id the actual house will be built using a scale factor of 12. What is the area of the actual building lot?
Answer:
5040 ft^2
Step-by-step explanation:
The area of rectangle is: 7 ft by 5 ft
The scaling is done by multiplying the dimensions with the sale factor.
so,
The area of actual house will be:
(7*12) x (5*12)
= 84 * 60
= 5040 ft^2
So the area of actual building is 5040 ft^2 ..
which equation have no real solution?
a.x^2+4x+16=0
b.4x^2+4x-24=0
c.5x^2+3x-1=0
d.2x^2-4x+4=0
To find out which equation has no real solutions, we need to calculate the discriminant for each of these given equations.
For calculating the discriminant, we need to first compare these equations with the general formula which is ax²+bx+c.
So, let's get started.
1) x² + 4x + 16 = 0
a=1, b=4, c=16
D = b²-4ac
= (4)² - 4(1)(16)
= 16-64
= -48
√D = √-48
2) 4x² + 4x - 24 = 0
a=4, b=4, c=-24
D = b²-4ac
= (4)² - 4(4)(-24)
= 16 - 16(-24)
= 16 + 384
= 400
√D = √400 = +20 or -20
3) 5x² + 3x - 1 = 0
a=5, b=3, c=-1
D = b²-4ac
= (3)² - 4(5)(-1)
= 9 + 20
= 29
√D = √29
4) 2x² - 4x + 4 = 0
a=2, b=-4, c=4
D = b²-4ac
= (-4)² - 4(2)(4)
= 16 - 32
= -16
√D = √-16
Now from all these above calculations, we can see that discriminant was negative in first equation and in last equation.
If D<0 then roots does not exist, as the square root can not contain a negative value or the equation does not have any real solutions.
Roots in such case can be calculated but those roots are known as imaginary roots, which is a higher concept.
So Final answer is,
Equation 1 => x² + 4x + 16 = 0
and
Equation 4 => 2x² - 4x + 4 = 0
has no real solutions.