Answer:
x = 14
Step-by-step explanation:
If the perimeter is 80, then that is (x+6) + (x+6) + (x+6) + (x+6). If you want to find x, you have to get rid of 6. 6+6+6+6 = 24. The perimeter, 80, minus 56. You then divide 56 by 4 to get x. That is 14. To check, you find (14+6)*4. That is 80.
DUE IN 10 MINSSSS ILL GIVE BRAINLYEST!!!!
Which description best describes the graph?
1. Linear increasing
2. Linear decreasing
3. Nonlinear increasing
4. Nonlinear decreasing
Answer:
nonlinear increasing
Step-by-step explanation:
1 pint= 1/8 gallon. How many pints are there in 2/3 gallon.
gallon = pint *0.125
gallon = pint / 8
0.125+0.125+0.125+0.125+0.125+0.125+0.125+0.125+0.125+0.125+0.125+
0.125+0.125+0.125+0.125+0.125 = 2
16 would be the answer I believe, maybe I'm wrong, double check.
Answer:
5 1/3 pints
Step-by-step explanation:
1 pint is 1/8gal and u need to find how many pints in 2/3 gal so it'll be 2/3 ÷ 1/8 which is 5 1/3
Rowan opens a savings account with $25 and saves $75 per month. Reem opens a savings account with $225 and saves $25 per month.
a) Write an equation for Rowan’s savings account balance. $225 and saves $25 per month
b) Write an equation for Reem’s savings account balance?
c) When will their account balances be the same? How much will they have? Justify your answer either through graphs and/or solving the equations.
Answer:
a.) y= 75x+25
b.) y= 25x+225
c.) Their account balances will be the same in 4 months and they'll have $325.
Step-by-step explanation:
For A and B: The variable is x which is the amount of months then add the initial amounts without a variable and equal it to y which is the amount in all.
For Rowan, they are saving $75 per month. This is where our variable goes and then we add the intial $25 dollars. The equation is y= 75x+25.
For Reem, they are saving $25 per month. This is where our variable goes and then we add the intial $225 dollars. The equation is y= 25x+225
C. You have to set the equations equal to each other and then solve for x.
75x+25 = 25x+225
Subtract 25 from each side
75x=25x+200
Subtract 25x from each side
50x=200
Divide each side by 50
X=4
For the amount they'll have, just plug 4 into one of the equations.
Rowan : y=75(4)+25
y=325
Reem: y=25(4)+225
y=325
I do not know this answer
i need the u answer
a man is 24 years older than son.in two years time, his age will be twice the age of his son. find the persent age of the son.
Answer:
22 years
Step-by-step explanation:
suppose his present age is x years
After 2 years, father's age (x+24+2) years and son will be (x+2). now x = 22 years is the answer if u solve it.
The present age of the son is 22 years .
Ⲋⲟⳑⳙⲧⳕⲟⲛ :Let us assume that the present age of the son is x years . Therefore according to question, we can say that the present age of his father will be x + 24 years. Then after two years, the age of the man will be twice the age of his son , i.e:
[tex] \quad\dashrightarrow\quad \sf {(x + 24) + 2 = 2 ( x + 2 ) }[/tex]
[tex] \quad\dashrightarrow\quad \sf { x + 26 = 2x + 4}[/tex]
[tex] \quad\dashrightarrow\quad \sf {2x -x = 26 - 4 }[/tex]
[tex] \quad\dashrightarrow\quad \underline{\sf {x = 22 }}[/tex]
Hence, the present age of the son is 22 years.
Find the value of x. Leave your answer in simplified radical form.
Step-by-step explanation:
the height from the right angle in a right-angled triangle is the square root of the product of the segments of the Hypotenuse the height is splitting it into.
so,
x = sqrt(7×9) = sqrt(63) = 3×sqrt(7)
Evaluate the limit
[tex]\rm\displaystyle\lim_{\rm x\to 4}\left(\frac{\sqrt{\rm x}-\sqrt{3\sqrt{\rm x}-2}}{\rm x^2-16}\right)=\ldots[/tex]
We are given with a limit and we need to find it's value so let's start !!!!
[tex]{\quad \qquad \blacktriangleright \blacktriangleright \displaystyle \sf \lim_{x\to 4}\dfrac{\sqrt{x}-\sqrt{3\sqrt{x}-2}}{x^{2}-16}}[/tex]
But , before starting , let's recall an identity which is the main key to answer this question
[tex]{\boxed{\bf{a^{2}-b^{2}=(a+b)(a-b)}}}[/tex]Consider The limit ;
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{\sqrt{x}-\sqrt{3\sqrt{x}-2}}{x^{2}-16}}[/tex]
Now as directly putting the limit will lead to indeterminate form 0/0. So , Rationalizing the numerator i.e multiplying both numerator and denominator by the conjugate of numerator
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{\sqrt{x}-\sqrt{3\sqrt{x}-2}}{x^{2}-16}\times \dfrac{\sqrt{x}+\sqrt{3\sqrt{x}-2}}{\sqrt{x}+\sqrt{3\sqrt{x}-2}}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x}-\sqrt{3\sqrt{x}-2})(\sqrt{x}+\sqrt{3\sqrt{x}-2})}{(x^{2}-4^{2})(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
Using the above algebraic identity ;
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x})^{2}-(\sqrt{3\sqrt{x}-2})^{2}}{(x-4)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{x-(3\sqrt{x}-2)}{(x-4)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{x-3\sqrt{x}+2}{\{(\sqrt{x})^{2}-2^{2}\}(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{x-3\sqrt{x}-2}{(\sqrt{x}-2)(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
Now , here we need to eliminate (√x-2) from the denominator somehow , or the limit will again be indeterminate ,so if you think carefully as I thought after seeing the question i.e what if we add 4 and subtract 4 in numerator ? So let's try !
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{x-3\sqrt{x}-2+4-4}{(\sqrt{x}-2)(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(x-4)+2+4-3\sqrt{x}}{(\sqrt{x}-2)(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
Now , using the same above identity ;
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x}-2)(\sqrt{x}+2)+6-3\sqrt{x}}{(\sqrt{x}-2)(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x}-2)(\sqrt{x}+2)+3(2-\sqrt{x})}{(\sqrt{x}-2)(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
Now , take minus sign common in numerator from 2nd term , so that we can take (√x-2) common from both terms
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x}-2)(\sqrt{x}+2)-3(\sqrt{x}-2)}{(\sqrt{x}-2)(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
Now , take (√x-2) common in numerator ;
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x}-2)\{(\sqrt{x}+2)-3\}}{(\sqrt{x}-2)(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
Cancelling the radical that makes our limit again and again indeterminate ;
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{\cancel{(\sqrt{x}-2)}\{(\sqrt{x}+2)-3\}}{\cancel{(\sqrt{x}-2)}(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x}+2-3)}{(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
[tex]{:\implies \quad \displaystyle \sf \lim_{x\to 4}\dfrac{(\sqrt{x}-1)}{(\sqrt{x}+2)(x+4)(\sqrt{x}+\sqrt{3\sqrt{x}-2})}}[/tex]
Now , putting the limit ;
[tex]{:\implies \quad \sf \dfrac{\sqrt{4}-1}{(\sqrt{4}+2)(4+4)(\sqrt{4}+\sqrt{3\sqrt{4}-2})}}[/tex]
[tex]{:\implies \quad \sf \dfrac{2-1}{(2+2)(4+4)(2+\sqrt{3\times 2-2})}}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{(4)(8)(2+\sqrt{6-2})}}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{(4)(8)(2+\sqrt{4})}}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{(4)(8)(2+2)}}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{(4)(8)(4)}}[/tex]
[tex]{:\implies \quad \sf \dfrac{1}{128}}[/tex]
[tex]{:\implies \quad \bf \therefore \underline{\underline{\displaystyle \bf \lim_{x\to 4}\dfrac{\sqrt{x}-\sqrt{3\sqrt{x}-2}}{x^{2}-16}=\dfrac{1}{128}}}}[/tex]
We can transform the limand into a proper rational expression by substitution.
Let y = √x. Then as x approaches 4, y will approach √4 = 2. So
[tex]\displaystyle \lim_{x\to4}\frac{\sqrt x - \sqrt{3 \sqrt x - 2}}{x^2 - 16} = \lim_{y\to2} \frac{y - \sqrt{3y-2}}{y^4 - 16}[/tex]
Now let z = √(3y - 2). Then as y approaches 2, z will approach √(3•2 - 2) = 2 as well. It follows that y = (z² + 2)/3, so that
[tex]\displaystyle \lim_{y\to2} \frac{y - \sqrt{3y-2}}{y^4-16} = \lim_{z\to2} \frac{\frac{z^2+2}3 - z}{\frac{(z^2+2)^4}{81}-16} \\\\ = \lim_{z\to2} \frac{27(z^2+2)-81z}{(z^2+2)^4 - 1296} \\\\ = 27 \lim_{z\to2} \frac{z^2 - 3z + 2}{z^8 + 8z^6 + 24z^4 + 32z^2 - 1280}[/tex]
Plugging z = 2 into the denominator returns a value of 0, which means z - 2 divides z⁸ + 8z⁶ + 24z⁴ + 32z² - 1280 exactly. Polynomial division shows that
[tex]\dfrac{z^8 + 8z^6 + 24z^4 + 32z^2 - 1280}{z-2} \\\\ = z^7+2z^6+12z^5+24z^4+72z^3+144z^2+320z+640[/tex]
and it's easy to see that the numerator is also divisible by z - 2, since
[tex]z^2 - 3z + 2 = (z - 1) (z - 2)[/tex]
So, we can eliminate the factor of z - 2 and we're left with
[tex]\displaystyle 27 \lim_{z\to2} \frac{z^2 - 3z + 2}{z^8 + 8z^6 + 24z^4 + 32z^2 - 1280} = 27 \lim_{z\to2}\frac{z-1}{z^7+\cdots+640}[/tex]
The remaining limand is continuous at z = 2, so we can evaluate the limit by direct substitution:
[tex]\displaystyle 27 \lim_{z\to2}\frac{z-1}{z^7+\cdots+640} = \frac{27}{3456} = \boxed{\frac1{128}}[/tex]
Can anyone help me with number 2??
Answer:
$320
Step-by-step explanation:
If $38.40 is 12%, then 1% is 38.40 ÷ 12.
⇒ 1% = 38.40 ÷ 12 = $3.20
Simply multiply 3.2 by 100 to get 100%:
⇒ 3.2 x 100 = $320
i need help please thanks
Answer:
60 degrees
Step-by-step explanation:
It measures 60 degrees
Tip: the wider the angle, the bigger the degree.
Hope this helps!
4 questions last ones thxxx
Answer:
(For the first two questions I do believe that you will need a protractor to calculate the angles.)
15) [tex]-(\frac{7\pi }{18} )\\[/tex] measures out to -70° in order to display that the angle would be in quadrant IV (the bottom right quadrant.)
The first image attached shows where the angle should be located.
16) [tex]\frac{\pi }{3}[/tex] is equal to 60° (the line you draw will be in quadrant 1 (the top right quadrant))
17) 350° is [tex]\frac{35\pi }{18}[/tex] or 6.11 (the answer depends on the format the professor wants.)
18) 240° is [tex]-(\frac{4\pi }{3})[/tex] radians or -4.19 (I am rounding to the nearest hundredths place the unsimplified answer is −4.18879020...)
Please help! 20 points thanks :)
Answer:
B
Step-by-step explanation:
(4 , 9) and (0, 5)
4 is x1, 9 is y1, 0 is x2, 5 is y2
formula:
slope = y2 - y1/ (underline is fraction line btw ;) )
x2 - x1
5 - 9
0 - 4
So the answer is B
What type of insurance can be waived (refused) if a driver feels that his/her car is not worth insuring? A. collision B. comprehensive C. liability D. uninsured motorist
Answer:
i believe its a
Step-by-step explanation:
Collision is the type of insurance can be waived (refused) if a driver feels that his/her car is not worth insuring.
What is Insurance?Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury.
Collision insurance covers the cost of repairing or replacing a driver's car if it is damaged in an accident.
It is typically optional and not required by law.
If a driver feels that the value of their car is low and that the cost of collision insurance is not worth the potential benefit, they may choose to waive (refuse) this type of coverage.
Comprehensive insurance covers damage to a driver's car from causes other than an accident, such as theft, vandalism, or natural disasters. Liability insurance covers damages and injuries that a driver causes to others in an accident.
Uninsured motorist insurance covers damages and injuries to a driver if they are hit by an uninsured or underinsured driver.
Hence, collision is the type of insurance can be waived (refused) if a driver feels that his/her car is not worth insuring.
To learn more on Insurance click:
https://brainly.com/question/30439416
#SPJ5
Write the sum using summation notation, assuming the suggested pattern continues. -9 - 3 3 9. 81.
The sum of the terms of the given sequence will be 648.
What is the arithmetic sequence?
An arithmetic sequence or arithmetic progression is a sequence in which each term is created or obtained by adding or subtracting a common number to its preceding term or value.
The given sequence is representing an arithmetic sequence.
Because every successive term of the sequence is having a common difference d = -3 - (-9) = -3 + 9 = 6
3 - (-3) = 3 + 3 = 6
Since last term of the sequence is 81.
By the explicit formula of an arithmetic sequence, we can find the number of terms of this sequence.
[tex]\rm T_n= a+(n-1)d\\\\[/tex]
Where a = first term of the sequence, d = common difference.
Substitute all the values in the formula
[tex]\rm T_n= a+(n-1)d\\\\ 81 = -9 + 6(n - 1)\\\\ 81+9 =6(n-1)\\\\90=6(n-1)\\\\ n-1=\dfrac{90}{6}\\\\n-1=15\\\\n = 15+1\\\\n=16[/tex]
Now we know the sum of an arithmetic sequence is represented by
[tex]\rm S_{16}=\dfrac{16}{2}[-9+(16-1)6]\\\\S_{16}=8 [-9+15\times 6]\\\\S_{16}=8 [-9+90}\\\\S_{16} = 8 \times 81\\\\S_{16}=648[/tex]
Hence, the sum of the terms of the given sequence will be 648.
To know more about arithmetic sequence click the link given below.
https://brainly.com/question/4199153
WILL GIVE BRAINLIEST Chang deposited $5000 into an account with a 4.8% annual interest rate, compounded monthly. Assuming that no withdrawals are made, how long will it take for the investment to grow to $7850 ?
Do not round any intermediate computations, and round your answer to the nearest hundredth.
Answer:
9.42 years (= 113 months)
Step-by-step explanation:
Use the compound rate interest formula:
[tex]A=P(1+\frac{r}{n})^{nt}[/tex]
where:
A = amountP = principal r = interest rate (in decimal format)n = number of times interest is compounded per unit tt = timeGiven:
A = $7850P = $5000r = 4.8% = 0.048n = 12t = years[tex]\implies 7850=5000(1+\frac{0.048}{12})^{12t}[/tex]
[tex]\implies 7850=5000(1.004)^{12t}[/tex]
[tex]\implies \dfrac{7850}{5000}=(1.004)^{12t}[/tex]
[tex]\implies 1.57=(1.004)^{12t}[/tex]
Take natural logs:
[tex]\implies \ln1.57=\ln(1.004)^{12t}[/tex]
[tex]\implies \ln1.57=12t\ln(1.004)[/tex]
[tex]\implies t=\dfrac{\ln 1.57}{12 \ln1.004}[/tex]
[tex]\implies t=9.42\textsf{ years (nearest hundredth)}[/tex]
[tex]\implies t=113 \textsf{ months}[/tex]
Prove that cos3A=sin2A
Answer:
Step-by-step explanation:
[tex]Cos3A= Sin2A ........ (i)\\\\Cos3A= Cos (90-2A)\\\\3A= 90-2A\\\\5A= 90\\\\A= 18\\\\[/tex]
Now,
Putting the value of A to find the value,
[tex]From (i)\\Cos(3x18) = Sin (2x18)\\Cos54= Sin36\\0.5877= 0.5877 \\LHS=RHSProved .[/tex]
Answer:
Cos3A= Sin2A ........ (i)
Cos3A= Cos (90-2A)
3A= 90-2A
5A= 90
A= 18
from (i)
Cos(3×18) = Sin (2×18)
Cos54= Sin36
0.5877= 0.5877 proved .
Step-by-step explanation:
60% of what number is 51?
Answer:
Set up an equation using the key terms:
60%Of a _ numberResults in 51We can consider 60% in our equation to be 60/100 which we later on simplify.
We contemplate that "-Of a blank number(of what number)" means the multiplication of an unknown value, "x".
The resulting of 51 will be what the equation will equal.
Form the equation;
60/100 · x = 51Solve for x:-
60/100x = 51
60/100 can simplify to 0.6 so it will now be,
0.6x = 51
Isolate x by dividing by 0.6 from both sides because the inverse operation of multiplication is division(since 0.6 is being multiplied by x).
÷0.6 ÷0.6
x = 85, therefore 60% of 85 is 51.
Help me what is 6x-2=20
Answer: 3.33
Step-by-step explanation:
6x-2= 20
+2= +2
Add two to both sides
6x=22
÷ 6= ÷6
Divide both sides by 6
x= 3.33 OR x= 22/6 simplified = 11/3
What you do to one side you do to the other to make the equation balanced.
Answer:
Step-by-step explanation:
6x - 2 = 20
Add 2 to both sides
6x - 2 + 2 = 20 + 2
6x = 22
Divide both sides by 6
[tex]\dfrac{6x}{6}=\dfrac{22}{6}\\\\\\x =\dfrac{11}{3}\\\\\\x = 3\dfrac{2}{3}[/tex]
Find the perimeter 15in 8in 9in 14in 12in
Answer:
the perimeter is 58 inches
Step-by-step explanation:
15+8+9+14+12= 58
Can someone please help me
D.
[tex]22 - 8 \sqrt{5} [/tex]
What is the y-intercept of the line 3x+4y=28
Answer:
y - int = 7
Step-by-step explanation:
y = -3/4x + 7
Answer:
i think the intercept is (0,7) im not sure, sorry if its not.
Step-by-step explanation:
At this weekend’s soccer game, 20 out of the first 50 people who entered the field were not wearing hats. If this sample is representative of the 250 people attending the game, about how many of them will probably NOT be wearing hats
Answer:
150 people
Step-by-step explanation:
20/50 = 40%
So 40% are wearing hats and 60% aren't
0.6=60%
250x0.6= 150
how to evaluate 3n, if n = 17
Answer:
51
Step-by-step explanation:
3n means 3 × n
substitute n = 17 into the expression
3n = 3 × 17 = 51
2x + 2y= -6
-2x + y =12
its elimination method
What is bigger 75 ounces or 5 lbs?
Answer:
so
Step-by-step explanation:
it is 5 pounds your welcome
The bigger measurement is 5 lbs.
What are Measurements?Measurement is the method of comparing the properties of a quantity or object using a standard quantity.
Measurement is essential to determine the quantity of any object.
Given two measurements.
75 ounces and 5 lbs.
We have the conversion formula,
1 lbs = 16 ounces
5 lbs = 5 × 16 = 80 ounces
80 ounces is greater than 75 ounces
5 lbs is greater than 75 ounces.
Hence the measurement which is bigger is 5 lbs.
Learn more about Measurements here :
https://brainly.com/question/2384956
#SPJ2
Hi guys, this is worth 10, so please answer! I am happy to give brainliest if answer is right
Thanks!
Picture attached below:
Answer for x should be 7
x = 7
Step-by-step explanation:
Hi there! if you don't understand any part make sure to ask me :D
Please help meee please
Answer:
(3x+2)(3x−2)
Step-by-step explanation:
a^2−b^2=(a+b)(a−b)
where a=3x and b=2
(3x+2)(3x−2)
PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
C. 22/5
Step-by-step explanation:
4x5=20
20+2=22
Answer:
C. 22/5
When making an improper fraction you must first multiply the denominator with the whole number in this case that would be 4 and 5
4*5=20
Then just add the numerator
20+2=22
And bring it back over the denominator
22/5
There you go your improper fraction.
Step-by-step explanation:
I need help with this one
Answer: 3.5 ft cubed.
Step-by-step explanation:
width*length*height Multiply all the numbers to find the volume.
It will be easier to change the fractions to decimals first.
NEED HELP ASAP DUE SOON!!!!!!
Answer:
Step-by-step explanation:
Area = s^2 =
New Area = (S- 6)(S+6) = S^2 -36, Choice (A)
Hope that helps!
what way is y-axis on the graph
Answer:
The y axis is a vertical line
Step-by-step explanation:
Y axis is up