Answers
Answer:
Step-by-step explanation:
I used the quadratic formula to find the roots of [tex]x^{2} + x -1[/tex]
[tex]a=\frac{-1-\sqrt{5}}{2} b=\frac{-1+\sqrt{5} }{2}[/tex]
[tex]\frac{1 }{\sqrt{3} } *(\frac{-1-\sqrt{5}}{2} )^{2} * \frac{-1+\sqrt{5}}{2}[/tex]
[tex]\frac{1 }{\sqrt{3} } *(\frac{-1-\sqrt{5}}{2} ) * \frac{-1+\sqrt{5}}{2}*(\frac{-1-\sqrt{5}}{2} )[/tex]
[tex]\frac{1 }{\sqrt{3} } *(\frac{-1-\sqrt{5}}{2} ) * \frac{-1+\sqrt{5}-\sqrt{5} -4}{4}[/tex]
[tex]\frac{1 }{\sqrt{3} } *(\frac{-1-\sqrt{5}}{2} ) * \frac{ -4}{4}[/tex]
[tex]\frac{1 }{\sqrt{3} } *(\frac{-1-\sqrt{5}}{2} ) * -1[/tex]
[tex]\frac{-1-1\sqrt{5} }{2\sqrt{3} }*-1[/tex]
[tex]\frac{-1-1\sqrt{5} }{2\sqrt{3} } = \frac{\sqrt{5}+1 }{2\sqrt{3} }[/tex]
Related Questions
Which of the following is a nonlinear function?
A. Jeremy has 10 comic books and he buys 2 comic books every month.
B. The annual revenue of an IT firm has been decreasing by 2% per year.
C. Desmond owns a gaming store where the average number of daily customers increases by 100 each month.
D. Molly has $200 in savings. She decided to save $45 each month going forward.
Answers
the answer of your question is c
Jerome wrote the following scenario to match the algebraic expression s 4 − 16: “16 fewer than four times the number of songs on my mp3 player” Does his scenario match the expression? Explain.
Answers
Answer:
No, because the expression s/4 - 16. In the word formed she times 4 and the letter, she should have to dived it.
Step-by-step explanation:
No, because the expression s/4 - 16. In the word formed she times 4 and the letter, she should have to dived it.
Answer:
No, Jerome’s scenario does not match the expression. The term s
4
means the number of songs is divided by four, but the scenario uses the word ‘times,’ which means multiplication. The scenario should say ‘16 fewer than one-fourth the number of songs.
g(n) = n² + 2; Find g(3)
Answers
Answer:
11 is the answerStep-by-step explanation:
1. Write the question.
g(n) = n² + 2; Find g(3)
2. Find and input the numbers into the equation
g(3) = 3² + 2
3² = 9
3. Solve the equation
g(3) = 3² + 2
= 9 + 2
= 11
The answer is 11.
Hope this helped,
Kavitha Banarjee
Solve the compound inequality
6x - 1 < -7 or 2x + 1 > 5
Answers
Answer:
x<−1orx>2
Step-by-step explanation:
Find the measurement?
Answers
Answer:
HG = 28
Step-by-step explanation:
The midsegment MN is half the sum of the 2 parallel bases, that is
[tex]\frac{HG+JF}{2}[/tex] = MN , that is
[tex]\frac{HG+16}{2}[/tex] = 22 ( multiply both sides by 2 )
HG + 16 = 44 ( subtract 16 from both sides )
HG = 28
Can you explain to me how to solve this problem?
Answers
Answer:
110
Step-by-step explanation:
Ok so you will do 22 times 5 first
Which will be 110!
You can double check
110 divided by 5 is.. 22!
You want to move the variable to one side and the actual numbers to the other side of the equal sign.
When you move the number 5 to the right, you take the division sign with it, and when you move something, the sign in front of it becomes its opposite. The division sign will now become a multiplication sign.
Now the equation looks like this: r = 22 times 5
R would equal 110
[tex]\sqrt{p^2}[/tex]
(the answer is not p)
Answers
Answer:
Step-by-step explanation:
√p^2=
I got either p or absolute p
Answer:
it's p .... but it depends on what you're being asked to do with it
Step-by-step explanation:
Pull terms out from under the radical, assuming positive real numbers
Decrease £40 by 70%
please help!
Answers
Answer: £12
Step-by-step explanation: To decrease £40 by 70%, you’ll have to find what 70% of £40 is, which is 28. Lastly, subtract 40 by 28. You should end up with a final result of £12.
What is the slope of the line through (-1, 4) and (1,-2)?
Answers
Answer:
-3
Step-by-step explanation:
The rise is 6 and the run is 2
I WILL MARK BRAINIEST
please answer question 5
Answers
Answer:
c
Step-by-step explanation:
because it just moves to the right by 7 units. it does not change in shape or size, only location.
Answer:
B. the angle measure won't change with translation
Step-by-step explanation:
what is the mean of 72,74,70,64,80
Answers
Answer:
64,70,72,74,80
Step-by-step explanation:
hahahahaahhaahhaah
Explanation=72+74+70+64+80=360, 360/5 = 72
WILL GIVE BRAINLIEST
5 Adrian, Ben and Charlie share some sweets in the ratio 7:4:9
Charlie got 24 more sweets than Adrian.
Work out the total amount of sweets.
Answers
Answer:
240 sweets total
Step-by-step explanation:
We know the ratio Adrian:Ben:Charlie=7:4:9. We can put one sweet as x:
7x+4x+9x=20xCharlie has 24 more sweets that Adrian– 9x-7x=2x=24So– x=12Now– 7(12)+4(12)+9(12)=20(12)=240Check your work:
84:48:108108-84=2484+48+108=240Jermaine is thinking about attending college
Answers
Answer:
congrats to him
Someone know how to do this? Serious answers only
Answers
Answer:
∠ AED = 92°
Step-by-step explanation:
The chord- chord angle ADE is half the sum of the arcs intercepted by the angle and its vertical angle, that is
∠ AED = [tex]\frac{1}{2}[/tex] ( arc AD + arc BC )
= [tex]\frac{1}{2}[/tex] (146 + 38)°
= [tex]\frac{1}{2}[/tex] × 184°
= 92°
Larry fills his bathtub at a constant rate. the amount of water in his tub is proportional to the amount of times he spends filling it. This relationship is described in the following graph
Answers
Answer:
A and B
Step-by-step explanation:
According to Khan Academy, it is A and B. Do NOT click "None of the Above." That is incorrect.
In the equation a= 3/b is a positive, real number. As the
value of b is increased so it becomes closer and closer to
infinity, what happens to the value of a ?
Answers
Answer:
The value of a tends to zeroStep-by-step explanation:
Given the expression a = 3/b
as the denominator of the of the expression b increases the value of the output is known to be decreasing. if the value of b now goes so large to become an infinite, value then the value of a will goes to zero as shown;
If b = ∞
a = 3/∞
a = 0
Note that for any constant value a, the ratio a/∞ will always tends to zero
1/sin2A+cos4A=cotA-cosec4A
Answers
I’m not sure
Count by 50 cents up to $4.00. Use dollar notation
Please help me
Answers
Answer:
1$, $1.50, $2, $2.50, $3, $3.50
Answer:
$1.00, $1.50, $2.00, $2.50, $3.00, $3.50
Step-by-step explanation:
Just add .50 (cents) on every time. When it comes to dollar notation, it should be marked with the dollar sign in front, and then the dollar amount, and then a decimal and the cent amount. The cent amount would be to the hundreths.
Graph the equation by plotting three
points. If all three are correct, the line
will appear.
y = -x - 2
Answers
Answer:
There are only 2 points
Step-by-step explanation:
hope this helps
True or false? Help pls serious answers only
Answers
Answer:
true im pretty sure i tried my best but stay safe and wait for another response maybe someone else knows :)
Step-by-step explanation:
Answer:
tttttttttttttttttttttt
Write a linear function f with f(0)=7 and f(3)=1.
Answers
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
a = ( 0 , 7 ) & b = ( 3 , 1 )
First need to find the slope using the following equation :
[tex]slope = \frac{y(b) - y(a)}{x(b) - x(a)} \\ [/tex]
[tex]slope = \frac{1 - 7}{3 - 0} \\ [/tex]
[tex]slope = \frac{ - 6}{3} \\ [/tex]
[tex]slope = - 2[/tex]
_________________________________
We have following equation to find the point-slope form of the linear functions using the slope and one of the through points .
[tex]y - y(0) = m \times ( \: x - x(0) \: )[/tex]
[tex]x(0) = x - coordinate \: \: of \: \: through \: \: point \\ [/tex]
[tex]y(0) = y - coordinate \: \: of \: \: through \: \: point \\ [/tex]
[tex]m = slope[/tex]
I choose point (( a )) to put in the equation.
[tex]y - 7 = - 2 \times (x - 0)[/tex]
[tex]y - 7 = - 2x + 0[/tex]
[tex]y - 7 = - 2x[/tex]
Add sides 7
[tex]y - 7 + 7 = - 2x + 7[/tex]
[tex]y = - 2x + 7[/tex]
This the slope-intercept form .
Done...
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
I'm kinda just doing this for the points, although thank you for the help <3
Answers
Answer:
THANK YOU. <3
Step-by-step explanation:
Multiply. Answer with a mixed number in simplest form
2 1/5 x 3 4/7
Answers
Answer:
7.85714285714
Explanation:
hrnvkdkdjcnvnskdkxjcnfkdldjgnvnfkdk
Hi, I don't need this really fast, but I really don't understand how to do surface area and lateral surface area with rectangular prisms, triangular prisms and cylinders. Any tips will be greatly appreciated. I will give you brainlist. ( idk how to spell lol ) :)
Answers
Answer:
The surface area is the area that describes the material that will be used to cover a geometric solid. When we determine the surface areas of a geometric solid we take the sum of the area for each geometric form within the solid.
Answer:
The volume of a pyramid
V=1/3⋅B⋅h
The area of the rectangle:
A=C⋅h
A=12.6⋅6
A≈75.6
To find the volume of a cylinder we multiply the base area (which is a circle) and the height h.
V=πr2⋅h
Plums cost $0.77 per pound Mangoes cost $1.32 per pound Write an expression that can be used to find the cost of buying p pounds of plums and m pounds of mangoes
Answers
Answer:
The graphs below show the cost y of buying x pounds of fruit. One graph shows the cost of buying x pounds of peaches, and the other shows the cost of buying x pounds of plums.
Which kind of fruit costs more per pound? Explain.
Bananas cost less per pound than peaches or plums. Draw a line alongside the other graphs that might represent the cost y of buying x pounds of bananas.
IM Commentary
This task allows students to reason about the relative costs per pound of the two fruits without actually knowing what the costs are. Students who find this difficult may add a scale to the graph and reason about the meanings of the ordered pairs. Comparing the two approaches in a class discussion can be a profitable way to help students make sense of slope.
Solutions
Solution: Slope as Unit Rate
The graph that represents the cost of x pounds of peaches is steeper, so it must have a larger slope. The slope can be interpreted as the unit rate; in this case it tells you the cost of a single pound of fruit.
Since the slope for the peach graph is greater than the slope of the plum graph, the cost of a pound of peaches is greater than the cost of a pound of plums.
For b, students should realize that the cost per pound of bananas will be represented by a slope that is less than either of the other two, and draw a line through the origin labeled "Bananas" and lying below both of the other graphs.
Solution: Adding a scale to the graph
Students who prefer to work with specific numbers can approach this problem by sketching in a scale on the x-axis and y-axis. For example, if they decided that a pound of peaches might cost a dollar, then they might plot the point (1,1) on the line labeled "Peaches", then fill out the rest of the scale accordingly. They could then read off the cost of a pound of plums and see that it is less than for peaches.
For the second question, they could choose any price per pound b for bananas that is less than the one they read off for plums, and then draw a line from the origin through the point (b, 1), and label it "Bananas".
What is 2 4/9 as a decimal
Answers
Answer:
2.4 repeated
Step-by-step explanation:
Thurman put $90 into a CD that pays 4.4% interest. According to the rule of
72, approximately how long will it take for his money to double?
Answers
Answer:
B-16.4 years
Step-by-step explanation:
What is the value of the ratio 1/2:3?
Answers
The value of the ratio 1/2: 3 is 1/6
A ratio is a comparison of two things or two quantities. It is the relative size of two quantities expressed as the quotient of one divided by the other.
We need to find the value of 1/2 : 3
This can be written as 1/2 : 3/1
On further simplification, this can be wriiten as
1/2 x 1/3
which is equal to 1/6
This can be written in the form of ratio as 1 : 6
Therefore, the value of the ratio 1/2: 3 is 1/6
To learn more about ratio refer here
https://brainly.com/question/12024093
#SPJ1
What is the greatest common factor of 9 and 12? 3 9 36 108
Answers
Answer:
The GCF would be 3
Step-by-step explanation:
You’re welcome :)
Answer:
1. A
Step-by-step explanation:
Jack works after school. Each day he is paid a set amount, plus an hourly wage. Look at the table. Choose the linear function f Jack can use to find his pay. Hours 1 1.5 2 2.5 3 Pay 18 23 28 33 38 A. f(x) = 10x + 8 B. f(x) = 15x + 3 C. f(x) = 0.5x + 1 D. f(x) = x + 18
Answers
Answer:
The correct linear equation is;
f(x) = 10x + 8
Step-by-step explanation:
To choose the correct linear function, we just need to take a specific point, then substitute in each of the equations given to get the one right
The correct one will be the one in which when the x-value is substituted, we will get the y-value
Let us pick (1,18)
Let us begin testing;
A. f(x) = 10x + 8
f(1) = 10(1) + 8 = 10 + 8 = 18
Let us use another point to test this
The second point is (1.5,23)
f(1.5) = 10(1.5) + 8
= 15 + 8 = 23