Answer:
Gradient of parallel line: 6
Gradient of perpendicular line: -1/6
Step-by-step explanation:
The gradient is the value of m in the equation format y = mx + c.
Parallel lines share the same gradient, with just the y-axis intercept (c value) changing.
The gradient of a line perpendicular to a line is found by taking the negative reciprocal of the original line's gradient. A reciprocal is a essentially fraction flipped over. For example 3/2 becomes 2/3. 6 can be expressed as 6/1 (as every whole number can be divided by 1), so the reciprocal of that is 1/6. The negative version of 1/6 is -1/6.
find the solution to the system of equations.
y= -7x + 3
y= -x - 3
Answer:
x = 1 y = -4
Step-by-step explanation:
-7x + 3 = -x - 3
-7x = -x - 6
-6x = -6
x = 1
y = - (1) - 3
y = -1 - 3
y = -4
Convert 5 π /3 radians to degrees.
5π/3=5π/3×180/π=300°
300° is the correct answer
Answer:
300 degrees
Step-by-step explanation:
To convert from radians to degrees, multiply by 180/ pi
5 pi /3 * 180/pi
5/3 * 180
5 * 60
300
Evaluate the expression shown below and write your answer as a fraction in simplest form. Please
Answer:
Step-by-step explanation:
3/11 + 4/11 = 7/11
2/3 divided by 7/11
Multiply by reciprocal
2/3 * 11/7 = 22/21 or 1 1/21
Answer:
\(\frac{22}{21}\)
Step-by-step explanation:
Firstly, we can see that this equation contains multiple different operators (in this case division and addition). So, we must keep in mind the order of operations. This can be remembered as PEMDAS or Paraenthasis, Exponents, Multiplication, Division, Addition, and Subtraction. When working on the problem using PEMDAS ALWAYS start from P and work your way down. PEMDAS is just used to determine the order in which a problem should be solved.
In our equation we have \(\frac{2}{3} / ( \frac{3}{11} +\frac{4}{11})\)
So, by using PEMDAS we can see that we first need to deal with what is in the parathesis.
We can do this by adding the two fractions together, which will give us \(\frac{7}{11}\)
We can add these together because the denominator or bottom numbers are the same.
Now we will have \(\frac{2}{3} / \frac{7}{11}\)
Now, we can use a math trick called keep it, change it, flip it to solve for the answer.
The first fraction, 2/3, will remain the same (this is the keep it step). Then change the division to multiplication (this is the change it step). And finally, flip the numerator with the denominator of the second fraction. So 7/11 will now be 11/7.
Your equations should now be \(\frac{2}{3} *\frac{11}{7}\)
Now solve! Multiply the numerators (top numbers) together and denominators (bottom numbers) together.
So, 2 x 11 = 22 and 3 x 7 = 21.
You should end up with \(\frac{22}{21}\)
This number cannot be further decreased, so it is your final answer.
Hope this helps :)
What are the x-intercepts of f(x)=x^3+4x^2-9x-36
Answer:
D is correct
Step-by-step explanation:
A man wants to mesure the height of a nearby building. He places a 7ft pole in the shadow of the building so that the shadow of the pole is exactly covered by the shadow of the building. The total length of the building’s shadow is 162ft, the pole casts a shadow that is 5.5ft long. How tall is the building? Round your answer to the nearest foot.
The height of the building is approximately 227 feet.
In the given question, a man wants to measure the height of a nearby building. He places a 7 ft pole in the shadow of the building so that the shadow of the pole is exactly covered by the shadow of the building.
The total length of the building's shadow is 162 ft, and the pole casts a shadow that is 5.5 ft long. We have to determine the height of the building.The given situation can be explained with the help of a diagram.
As shown in the figure above, let AB be the building and CD be the 7 ft pole. The height of the building is represented by the line segment AE, which is to be determined. Let the length of the shadow of the pole be CD and that of the building be BD.
Therefore, the length of the total shadow will be BC or CD + BD.According to the question, the shadow of the pole is exactly covered by the shadow of the building. This implies that the two triangles AEF and CDF are similar. Hence, the corresponding sides are proportional. Therefore, we have:AE/EF = CD/DF
On substituting the values from the given data, we get:
AE/(EF + 5.5) = 7/5.5.... (1)
Similarly, we can write from the given data:
BD/DF = 162/5.5.... (2)
From equations (1) and (2), we can write:
AE/(EF + 5.5) = BD/DF => AE/(EF + 5.5) = 162/5.5.... (3)
On solving the above equation for AE, we get:
AE = (7/5.5) × (162/5.5 - 5.5)≈ 226.6 ft
Therefore, the height of the building is approximately 227 feet.
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Please help
See the picture
Answer:
The equation is y=-6x+3
Step-by-step explanation:
the y-intercept is 3 and the slope is 6
Calculate the lateral area of the rectangular prism if the perimeter of the base is 48 units
Answer: It’s C just did assignment 288unitssquared
ayo who is wiining the election now?
Answer:
Joe Biden
Step-by-step explanation:
please help i need this for tomorrow. thanks
Answer:
y=1/3x
Step-by-step explanation:
To write an equation we need to find the slope. to do that we use y-y1 over x-x1. In this case, I used the points (3,1) and (0,0). 1-0 over 3-0 comes out to 1/3. Replace m with that and you have your equation.
Mr. Drew bought 2.5 cubic yards of mulch for $62.90. How much does one cubic yard cost?
Divide total cost by amount bought:
62.90 / 2.5 = 25.16
One cubic yard cost $25.16
Answer:
$25.16
Step-by-step explanation:
62.90/2.5=25.16
Nao and Arban drive to work.
Nao drives 95 miles in 2.5 hours.
Arban drives 128 km in 1 hour 15 min.
Work out the difference between their average speeds in km/h.
1 mile = 1.6 km
Thank You.
Answer:
41.6 km/h
Step-by-step explanation:
Nao drives 95mi/2.5hr or 38 miles per hour, or 60.8 km/h
1 hr 15 min is the same as 1.25 hours
Arban drives 128km/1.25hr or 102.4 km/h
The difference is 102.4-60.8 = 41.6
Which choice is equivalent to the fraction below 2/√x - √x+2
The fraction is equivalent to the \(\sqrt{x+2}-\sqrt{x}\).
The correct option is (C).
Given,
The fraction is given as:
\(\frac{2}{\sqrt{x} -\sqrt{x+2} }\)
To find the above fraction which choice is equivalent to the fraction?
Now, According to the question:
Simplify or expand
\(\frac{2}{\sqrt{x} -\sqrt{x+2} }\)
Rationalize the denominator:
\(\frac{2(\sqrt{x} -\sqrt{x+2} )}{(\sqrt{x} -\sqrt{x+2})(\sqrt{x} -\sqrt{x+2} ) }\)
Expand the expression:
\(\frac{2(\sqrt{x} +\sqrt{x+2} )}{(\sqrt{x})^2-(\sqrt{x+2} )^2 }\)
\(\frac{2(\sqrt{x} +\sqrt{x+2} )}{x-(x+2)}\)
\(\frac{2(\sqrt{x} +\sqrt{x+2} )}{-2}\)
Determine the sign and cross out the common factor:
\(\sqrt{x+2}-\sqrt{x}\)
Hence, The fraction is equivalent to the \(\sqrt{x+2}-\sqrt{x}\).
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BOWLING The cost for Nobu to go bowling is $4 per game plus an additional flat fee of $3.50 for the rental of bowling shoes. The cost can be modeled by the function f(x)=4x+3.5, where x represents the number of games bowled. Describe the graph of g(x) as it relates to f(x) if Nobu does not rent bowling shoes.
g(x) = , 1 of 3.
Select Choice
, which is the translation of f(x) , 2 of 3.
Select Choice
units , 3 of 3.
Select Choice
The graph of g(x) = 4x, is the translation of f(x) by subtracting 3.5 units, 2 of 3.
What is a graph?A graph can be defined as a pictorial representation or a diagram that represents data or values.
The cost can be modeled by the function f(x)=4x+3.5, where x represents the number of games bowled.
As per the given question, the required solution would be as:
g(x) = 4x , is the translation of f(x) by subtracting 3.5 units, 2 of 3.
The graph of g(x) would be identical to the graph of f(x), but shifted 3.5 units downward, 3 of 3.
This is because the flat fee for the rental of bowling shoes is not present in the function g(x), so the y-intercept of the graph would be at (0,-3.5) instead of (0,0) in f(x) function.
The slope and the shape of the function will remain the same.
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If it takes three robots 17 hours to mow vast lawn how many robots would be needed to mow it under three hours
Answer:1/4 of robot
Step-by-step explanation:
PLEASE SHOW YOUR WORK ON HOW TO SOLVE THIS PROBLEM!! BEST ANSWER ILL GET MARKED BRAINIEST!
4x+5/x+7
Answer:
x = 2.4
Step-by-step explanation:
4x + 5 / x + 7
combine like terms
X + 4x = 5x
5 + 7= 12
12/ 5x
Divide
12 /5= 2.4
X= 2.4
Write a word problem that must be solved by using division
Becky has 15 apples. She wants to give her 5 friends an equal amount each. How many apples would each friend get?
Hope this helps and pls mark me brainliest:)
a fish tank 60 litres of water round to 1 significant figure
40 litres of water rounded to 1 significant figure is removed from the tank
work out the upper bound of the water left in the tank
The upper bound of the volume of water left in the fish tank is 20 liters.
In the given statement is :
A fish tank contains 60 liters of water, rounded to 1 significant figure. 40 liters of water, rounded to 1 significant figure, are removed from the tank.
Work out the upper bound of the volume of water left in the fish tank.
Now, According to the question:
Initial water in tank = 60 liters
Amount of water removed = 40 liters
Hence, To calculate the upper bound of the volume of water left in the fish tank;
= 60 - 40
= 20 liters
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In a pre algebra class containing 43 students, there are 4 freshman, 35 sophomores, and 4 juniors. what fraction of the class are sophomores
The fraction of the class that is sophomores is \(35/43\).
The fraction of the class that is sophomores, divide the number of sophomores by the total number of students in the class.
Number of sophomores = 35
Total number of students = 43
Fraction of sophomores = (Number of sophomores)/(Total number of students Fraction of sophomores)
Fraction of sophomores \(= 35 / 43\)
Therefore, the fraction of the class that are sophomores is = \(35/43\).
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hello I'm stuck on this word problem and need help thank you
Given that:
'x' represents the area used for flowers.
'y' represents the area used for vegetables.
The information will lead to two inequalities which are,
\(\begin{gathered} x+y\leq250............1 \\ y\ge3x...........2 \end{gathered}\)Let us now graph the two inequalities above
From the above graph, the red shaded portion is the region corresponding to all values of x and y that satisfies the requirements.
mrs. watson is buying vintage records for a friend at a local records shop. Thre price of a record is based on its condition. The table shows the total cost of x number of records for each condition.
The equation for total cost of buying and shipping the records is
76.4x + 80
We have,
She buys 3 in good condition
So, the cost for 3 good condition
= 3 (10.5x)
= 31.5 x
and, She buys 1 in Fair condition
So, the for 1 fair condition
= 5x
and, She buy 2 new condition then the price is
= 39.9 x
So, the equation for total cost of buying and shipping the records is
= 31.5x + 5x + 39.9x + 8
= 76.4x + 8
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HELP ME PLEASE WILL GIVE ALL POINTS
Two angles have measures of (x + 14)
and (3x - 15)°. What value of x will make
the angles congruent?
how do you solve it I need help.
Answer:
28.5
Step-by-step explanation:
x + 14 = 3x - 15
29 = 2x
x = 14.5
14.5 + 14 = 28.5
The mean of the following frequency distribution was found to be 3.2. and frequency is 4, x, y, 5, 6, 5, Calculate the missing frequencies represented by x and y. if the data is 0, 1, 2, 3, 4, 5
The missing frequencies represented by x and y are x = 0 and y = 0
Calculating the missing frequencies represented by x and yFrom the question, we have the following parameters that can be used in our computation:
Data: 0, 1, 2, 3, 4, 5
Frequency: 4, x, y, 5, 6, 5
Mean = 3.2
The mean is calculated as
Mean = Sum/Count
So, we have
(0 * 4 + 1 * x + 2 * y + 3 * 5 + 4 * 6 + 5 * 5)/(4 + x + y + 5 + 6 + 5) = 3.2
This gives
(x + 2y + 64)/(x + y + 20) = 3.2
Rewrite as
(x + 2y + 64)/(x + y + 20) = 32/10
So, we have
(x + 2y + 64)/(x + y + 20) = 64/20
By comparison, we have
x + 2y + 64 = 64
x + y + 20 = 20
So, we have
x + 2y = 0
x + y = 0
Subtract the equations
y = 0
So, we have
x + 0 = 0
Evaluate
x = 0
Hence, the missing frequencies are 0
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A new car has a list price of $28,500 . Suppose that the dealer markup on this car is 10%. What is the dealer's cost?
Answer: 25650
Step-by-step explanation: 10% of 28500 is well 2850
28500-2850=25650
(if only i could get good rates on my car)
is 3/16 greater than 1/16
Read paragraph 23.
(23) 'Of course some one might cut them down. The boy lowered his voice; it seemed shameful to mention the perpetration
of such a deed aloud. 'It would be terrible to hear them groan when the axe struck them. The young ones mightn't mind so
much; but it would be bad for the grandfather trees who've been here from the beginning. Hannah says one would still hear
them walling on stormy nights."
How does this paragraph add tension to the passage?
This excerpt adds tension by:
A.introducing Hannah's feelings toward the trees that were on the property and contrasting them with his own.
B. using the term "grandfather trees" to describe the older trees that have been on the property a long time.
C.emphasizing how painful it would be for the boy and the trees if the trees were cut down.
D. explaining how the old trees would take human qualities in reaction to being cut down.
This paragraph add tension to the passage by explaining how the old trees would take human qualities in reaction to being cut down. Option D
What is tension?The term tension in literature has to do with the feeling of anxiety that comes along with a piece of written text. Anxiety is deliberately created by the author as one of means of making the reader to be spellbound by the writing.
Now, if we examine the excerpt as we have it in the question, we can see that this paragraph add tension to the passage by explaining how the old trees would take human qualities in reaction to being cut down. Option D
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f(x)=x^2+4x-2 what is the vertex
Answer:(-2,-6)
Step-by-step explanation:Put it in a graph and it should be the dot in the direct middle
Answer:
f(x)= (x+2)^2-6
Step-by-step explanation:
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random sample of business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The ratings obtained from the sample of business travelers follow.
2 6 7 8 9 9 9 10 10 10 10 9 4 5 6 6 8 7 9 10 9
6 5 7 6 8 4 2 10 9 9 10 10 9 8 7 5 9 9 3 6 2 9
7 10 7 9 9 9 9
Required:
Develop a confidence interval estimate of the population mean rating for Miami.
Answer: 6.8622 ; 8.1778
Step-by-step explanation:
Given the data:
2 6 7 8 9 9 9 10 10 10 10 9 4 5 6 6 8 7 9 10 9
6 5 7 6 8 4 2 10 9 9 10 10 9 8 7 5 9 9 3 6 2 9
7 10 7 9 9 9 9
Assume a confidence interval of 95%
Using calculator :
The mean of the distribution (m) = 7.52
Standard deviation (s) = 2.314
Sample size),
Obtaining the t score ;
Degree of freedom (df) = (n-1) = 50 - 1 = 49
t(1-α/2), 49 = t(0.025, 49) = 2.01 ( t distribution table)
Margin of Error :
2.01 * s/√n = 2.01 * 2.314/7.0710678
Margin of Error (E) = 0.6578
Confidence interval:
(Mean - E) ≤μ≤ (mean + E)
(7.52 - 0.6578) ≤μ≤ (7.52 + 0.6578)
6.8622 ≤μ≤ 8.1778
 Hey guys, I would really appreciate if one of you help me with this question
Answer: 28.25%
Step-by-step explanation:
113/400=0.2825=28.25%
Help me please I beg
Answer:
i guess it is 1 inch??
Step-by-step explanation:
6/29+13/29+10/29
(6+10+13)/29
29/29
1
Boris started on the treadmill after setting timer for 99 minutes. The display says he have finished 43% of his run. How many minutes have gone by. Round to the nearest tenth