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Answer:
(9x -4)/(x^2 -4)
Step-by-step explanation:
Perhaps you intend the sum ...
7x/(x^2 -4) +2/(x +2)
[tex]=\dfrac{7x}{(x+2)(x-2)}+\dfrac{2}{x+2}=\dfrac{7x+2(x-2)}{(x+2)(x-2)}\\\\=\boxed{\dfrac{9x-4}{x^2-4}}[/tex]
Simplify equations HELP NOW!!
Answer:
[tex]\frac{1}{5} (2x+10)=4[/tex] [tex]x=5[/tex]
[tex]\frac{1}{3} (3x+9)=9[/tex] [tex]x=6[/tex]
Step-by-step explanation:
[tex]\frac{1}{5} (2x+10)=4[/tex]
Multiply both sides of the equation by 5.
5 · [tex]\frac{1}{5}[/tex] · [tex](2x+10)=[/tex] 5 · 4
Simplify both sides of the equation.
[tex]2x+10=20[/tex]
Subtract 10 from both sides of the equation.
[tex]2x=10[/tex]
Divide each term by 2 and simplify.
[tex]x=5[/tex]
--------------------------------------------------------------------
[tex]\frac{1}{3} (3x+9)=9[/tex]
Substitute x for 6
[tex]\frac{1}{3} (3(6)+9)=9[/tex]
Multiply 3 · 6
[tex]\frac{1}{3} ((18)+9)=9[/tex]
Add 18 + 9
[tex]\frac{1}{3} (27)=9[/tex]
Divide [tex]\frac{1}{3}[/tex] ÷ 27
9 = 9
6. The price of a necklace is four times that of a
bracelet. Let the price of the bracelet be $x.
(i) Express the price of the necklace in terms of x.
Answer:
The necklace is 4x.
Step-by-step explanation:
If the bracelet is x and the necklace is 4 times greater you would multiply the cost of the bracelet by 4. Meaning it would be X *4= 4x (x multiplied 4 times.)
Jasmine rides her bicycle for 8 hours and is 42 miles from her house. After riding for 11 hours, she is 57 miles away.
Answer:
This isn't a question
Step-by-step explanation:
A pendulum on a grandfather clock swings side to side once every second. If the length of the pendulum is 8ft and the angle is 20 degrees, how far does it travel in 1 second?
Step-by-step explanation:
Yo all ✌️✌️
Jóin me
g-meet
besmfyotjp
Answer:
73.66 miles per hour
or if 40 degree whole swing of pendulum then ;
147.33 miles per hour.
Divide by 3600 for p/second
Step-by-step explanation:
sin x = opp /hyp = 8 x sin (20) = 1.113384808 = 1.11ft
1.1ft p/s
5290 feet in every mile
5290/1.113384808 = 4751.27733 feet
3500 seconds in an hour
3500/4751.27733 x 100 = 73.6644013 m/ph
Scenario 2
or 2.2 feet per second depending on whether the angle from central each side is 20 degrees = 1.1 x 2 = 2.2 feet.
5290/2.22676962 =2375.63866
3500 seconds in an hour
3500/2375.63866 x 100 = 147.328803 m/ph
What is the correct answer?
What is the sum of the given polynomials in standard form? (x2 - 3x) + (-222 + 5x - 3) 0 -37 + 8x - 3 0-22–2x-3 o 3,2 - 8x + 3 o 2 + 2-3
Answer:
-x^2+2x-3
Step-by-step explanation:
(x^2 - 3x) + (-2x^2 + 5x - 3)
Combine like terms
-x^2+2x-3
Answer:
The fourth answer
Step-by-step explanation:
What is the sum of the given polynomials in standard form? (x2 - 3x) + (-222 + 5x - 3) 0 -37 + 8x - 3 0-22–2x-3 o 3,2 - 8x + 3 o 2 + 2-3
The fourth answer
HELP PLSSSSS!!!!! I WILL Give Brainlyist
Answer:
[tex]\frac{5}{6}[/tex]
Step-by-step explanation:
Answer:
[tex] \frac{5}{6} [/tex]Step-by-step explanation:
[tex] \frac{1}{6} + \frac{2}{3} [/tex][tex] \frac{1}{6} + \frac{2}{3} \times \frac{2}{2} [/tex][tex] \frac{1}{6} + \frac{2 \times 2}{3 \times 2} [/tex][tex] \frac{1}{6} + \frac{2 \times 2}{6} [/tex][tex] \frac{1 }{6} + \frac{4}{6} [/tex][tex] \frac{1 + 4}{6} [/tex][tex] \frac{5}{6} [/tex]Hope it is helpful...Four times a number added to eight is equivalent to the opposite of four
Answer:
let the number be y
Opposite of 4 is -4
4y + 8 = -4
Group liked terms
4y = -4 - 8
4y = -12
y = -3
Step-by-step explanation:
let the number be y
Opposite of 4 is -4
4y + 8 = -4
Group liked terms
4y = -4 - 8
4y = -12
y = -3
Evaluate the inverse trigonometric function Sin^-1(-1). Give answers in both radians and degrees.
A) Sin^-1(-1) = -pi or -180°
B) Sin^-1(-1) = 3pi/2 or 270°
C) Sin^-1(-1) = pi or 180°
D) Sin^-1(-1) = -pi/2 or -90°
Answer:
B) Sin^-1(-1) = 3pi/2 or 270°
D) Sin^-1(-1) = -pi/2 or -90°
Step-by-step explanation:
Sine function:
The sine function is -1 at 270º(-90º), which is 3pi/2 = -pi/2.
Inverse sine:
The input of the inverse sine function is a value, and the output are the angles which have the sine equal to the input.
Sin^-1(-1)
Angles for which the sine are -1, that is 3pi/2 or 270° and -pi/2 or -90°. Thus, options B and D are correct.
BRAINIST AND 10 POINTS
Answer:
I'm not positive but here are my calculations:
A cube is 1 unit per cube. 3+2+1=6 if you do 6x6 you come out with 36.
Hope this helped.
which table shows a non linear relationships between x and y
Answer:
both of them thats the answer
Step-by-step explanation:
Construct an equation that has y = 8 as its solution. Use y on both sides of the equation.
Answer:
3y + 4 = 20 + y
Step-by-step explanation:
The equation that has y = 8 as its solution will be 3y + 4 = 20 + y.
What is an equation of the line?An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.
Given that Construct an equation that has y = 8 as its solution. The equation of the line will be:-
3y + 4 = 20 + y.
When we solve the equation we will get the value of y equal to 8.
3y + 4 = 20 + y.
3y - y = 20 - 4
2y = 16
y = 16 / 2
y = 8
Therefore, the equation that has y = 8 as its solution will be 3y + 4 = 20 + y.
To know more about an equation of the line follow
brainly.com/question/18831322
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Of their first 18 games of the season, the
Chicago Cubs lost 4 games and won the
others. What percent of the games have
they won?
The percentage of the games the club has won is P = 77.78 %
What is Percentage?A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, %
The difference between an exact value and an approximation to it is the approximation error in a data value. Either an absolute error or a relative error might be used to describe this error.
Percentage change is the difference between the measured value and the true value , as a percentage of the true value
Percentage change =( (| Measured Value - True Value |) / True Value ) x 100
Given data ,
Let the total number of games = 18
The number of games they lost = 4
So , the number of games they won = 14 games
Now , the percentage of games they won = ( 14 / 18 ) x 100
On simplifying the equation , we get
A = 0.7778 x 100
A = 77.78 %
Hence , the percentage is 77.78 %
To learn more about percentage click :
https://brainly.com/question/12861068
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Determine the intercepts of the line
X_______
Y_______
Answer:
-250, and 100
Step-by-step explanation:
The intercepts of the line are the points where line intersects the x-axis and y-axis .
the x intercept is at point (-250, 0)
the y intercept is at point (0, 100)
Help me pleaseeeeeeeeeee nowwwww
Answer:
the correct answer is letter B
The following table shows a proportional relationship between j and m.
Answer:
[tex]j = \frac{3}{4} m[/tex]
Step-by-step explanation:
[tex]4j = 3m[/tex]
Divide both sides by 4 and you get the answer :)
if you help me I will love you forever
Answer:
I think the answer would be 22.15 but I'm not really sure.
Answer:
22.15
Step-by-step explanation:
So, lets go over a few things:
The y coordinates is the Foot length.
The x coordinate is the Arm span.
They gave us a yellow stone in the graph, this shows what the feet length is when the arm length is at a specific value.
So we need to find the foot length when the arm length is at 160.
Once you have pinpointed 160 on the graph, go strait up until you get to the yellow line.
WHen you hit the yellow line, look at the y axis. It should seem to be in between 21 and 23.The only answer in between 21 and 23 is 22.15
So this is the answer!
Hope this helps! :D
A semi-elliptical arch rises 20 feet above a channel connecting two lakes. The width of the ellipse measures 50 feet. Write an equation of the ellipse. Let the center of the channel be located at the origin.
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Answer:
x^2/625 +y^2/400 = 1
Step-by-step explanation:
The semi-major axis is a=25, the semi-minor axis is b=20. The equation is ...
x^2/a^2 +y^2/b^2 = 1
x^2/625 +y^2/400 = 1
Creed wanted to know if there was a correlation between number of years of education and income. He collected data and created the scatterplot shown:
Determine the closest correlation coefficient (r value) for this data.
Answer:
0.8
Step-by-step explanation:
i did math <:
Which of the following statements is not true regarding a 95% confidence interval for the mean of a population?
a. In 95% of all samples, the sample mean will fall within 2 standard errors of the true population mean.
b. If you add and subtract two standard errors to and from the sample mean, in 95% of all cases, you will have captured the true population mean.
c. In 95% of all samples, the true population mean will be within 2 standard errors of the sample mean.
d. 95% of the population values will lie within 2 standard errors of the sample mean.
Answer:
Hello There!!
Step-by-step explanation:
I believe the answer is b. If you add and subtract two standard errors to and from the sample mean, in 95% of all cases, you will have captured the true population mean.
hope this helps,have a great day!!
~Pinky~
The 95% confidence interval does not mean that b. If you add and subtract two standard errors to ... 95% of all cases,... captured the true population mean.
What is the 95% confidence interval for a population mean?It means that for any given number of samples, 95% of them will fall within 2 standard errors of the true mean of the population the sample is derived from.
Applying this confidence interval to the sample mean will not help you capture the true population mean which is why option B is incorrect as regards the 95% confidence interval for the population mean.
In conclusion, option B is correct.
Find out more on the 95% confidence interval at https://brainly.com/question/3191358.
if f(x) = x^2 + 3x, and g(x) = 2x^2, what is g(f(-1))?
Answer: g
(
x
2
−
3
x
)
=
2
x
2
−
6
x
+
2
Step-by-step explanation:
Find the length of x, round too the nearest tenth
Answer:
Step-by-step explanation:
take 34 degree as reference angle
using tan rule
tan 34=opposite/adjacent
0.67=x/16
0.67*16=x
10.72=x
10.7=x (after converting it to the nearest tenth)
x < -5
f(x) =
(x + 6)2 +3 for
0
for
- 2x - 8
for
x = -5
X > -5
Find f(-7)
If f(x)=(x-1)^1/3 then what is f^-1(x)
Answer:
The answer is f−1(x)=1x13
Step-by-step explanation: hi
ECONOMICS PLS HELP !!!!!!!!!!!!!!!!!!!!! 100 POINTS
Which factors of production had to be utilized to bring you an online education?
it is a verbal question from my teacher I have to tell her the answer tomorrow and I don't know what to tell her lol
Which measurement is equivalent to 300 millimeters ?
Answer:
11.811 inches?
7620 millimeters?
A car wash detailed 264 cars in 8 hours. At what rate did the car wash detail cars in cars per hour?
Answer:
33
Step-by-step explanation:
264/8= 33
I'm so confused, please help!
A family wants to purchase a house that costs $120,000. They plan to take out a $100,000 mortgage on the house and put $20,000 as a down payment. The bank informs them that with a 15-year mortgage their monthly payment would be $745.86 and with a 30-year mortgage their monthly payment would be $546.01. Determine the amount they would save on the cost of the house if they selected the 15-year mortgage rather than the 30-year mortgage.
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Answer:
$62,308.80
Step-by-step explanation:
The total amount paid on the 15-year mortgage is ...
($745.86/mo)×(12 mo/yr)×(15 yr) = $132,254.80
The total amount paid on the 30-year mortgage is ...
(546.01/mo)×(12 mo/yr)×(30 yr) = $196,563.60
__
The amount saved by selecting the 15-year mortgage is the difference of these amounts:
$196,563.60 -132,254.80 = $62,308.80
_____
Additional comment
This problem statement has several numbers in it that are irrelevant to the question being asked. This is why you need to read and understand the given information, and also understand the question being asked.
Here, the total cost of the house will include the mortgage cost and the down payment. The down payment is the same in either case, so does not factor in when we subtract one total cost from the other. Any difference in cost is due only to the difference in loan cost.
What is 2/7 divided by 5/4? (No links)
Answer: 5/14
Step-by-step explanation:
Suppose a triangle has sides 1,
and 1. Which of the following must be true?
A. The triangle in question is a right triangle.
B. The triangle in question may or may not be a right triangle.
C. The triangle in question S not a right triangle.
SUBMIT
9514 1404 393
Answer:
B. The triangle in question may or may not be a right triangle
Step-by-step explanation:
The length of the third side of the triangle may have any measure between 0 and 2. The triangle will only be a right triangle if the third side has length √2.
The triangle may or may not be a right triangle.