Answer: 60
Step-by-step explanation:
[tex]A = s^2\\\\frac{dA}{dt}=2s \frac{ds}{dt}\\36=s^2 \\ s=6\\\frac{dA}{dt} = 2(6)(5)=60 \frac{cm^2}{s}[/tex]
Answer:
The area of the square is increasing at a rate of 60 cm²/s
Step-by-step explanation:
Let [tex]l[/tex] be the length of the side of the square
Hence, The area of the square is given by
[tex]A = l^{2}[/tex]
Where [tex]A[/tex] is the area of the square
From the question, each side of a square is increasing at a rate of 5 cm/s, that is,
[tex]\frac{dl}{dt} = 5 cm/s[/tex]
Now, to determine the rate at which the area of the square is increasing, That is [tex]\frac{dA}{dt}[/tex]
To find [tex]\frac{dA}{dt}[/tex], differentiate [tex]A = l^{2}[/tex] with respect to [tex]t[/tex]
From, [tex]A = l^{2}[/tex]
[tex]\frac{dA}{dt} = \frac{d(l^{2}) }{dl}[/tex] ×[tex]\frac{dl}{dt}[/tex]
[tex]\frac{dA}{dt} = 2l[/tex] ×[tex]\frac{dl}{dt}[/tex]
Now, to determine the rate at which the area of the square is increasing when the area of the square is 36 cm²
First, we will determine the length at this instance,
From, [tex]A = l^{2}[/tex]
[tex]36 = l^{2}\\ \sqrt{36} = l\\6 = l\\l = 6cm[/tex]
The length at this instance is 6cm
To determine the rate at which the area of the square is increasing at this instance
[tex]l = 6cm\\[/tex]
From the question, [tex]\frac{dl}{dt} = 5 cm/s[/tex]
Hence,
[tex]\frac{dA}{dt} = 2l[/tex] ×[tex]\frac{dl}{dt}[/tex]
[tex]\frac{dA}{dt} = 2(6)[/tex] × [tex]5[/tex]
[tex]\frac{dA}{dt} = 60 cm^{2}/s[/tex]
Hence. the area of the square is increasing at a rate of 60 cm²/s
Which sequence of transformations means the image would be congruent to the original figure instead of similar to it?
dilation and rotation
translation and rotation
translation and dilation
reflection and dilation
Answer:
B.) translation and rotation
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Central High wants to estimate the number of seniors who plan to go to a 4-year college. Answer the following.
Answer:
plz ask question correctly
I need the slope-intercept form equation for the line shown in the graph
Answer: y=-8/5x+2
Step-by-step explanation:
The equation for slope-intercept form is y=mx+b. We know that m is the slope and b is the y-intercept. We can determine that b=2 because the y-intercept passes through the y-axis. This line passes through the y-axis at y=2. Now, all we have to do is find the slope. We can do that by using any two points on the graph. Let's use (-5,10) and (5,-6). The formula for slope is [tex]m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex].
[tex]m=\frac{-6-10}{5-(-5)} =\frac{-16}{10} =-\frac{8}{5}[/tex]
With our slope, we can piece together the slope-intercept form equation.
y=-8/5x+2
please help// geometry question
a. Since a line doesn't have endpoint, it doesn't matter which
two points we use to name a line so we could call this line DC.
b. A ray is a figure that starts at and endpoint and continues
forever in one single direction. So a ray here would be ray AB.
c. Opposite rays are two rays that share a common endpoint,
have no other points of intersection, and all points are collinear.
So ray EC and ray ED would be opposite rays.
A) Line names are made using two letters, since line CD passes through E, line CD could be renamed CE
B) a Ray has one end point and goes in one direction. If A is the endpoint, the line goes through point B
The Ray would be AB with an arrow pointing to the right above the letters.
C) Opposite rays create a straight line and have the same point.
Ray ED is opposite EC
PLEASE HELP ME I AM IN DIRE NEED OF ASSISTANCE EXTRA POINTS INCLUDED BRAINLIEST GUARANTEED. Explain how to solve 5x − 2 = 8 using the change of base formula log base b of y equals log y over log b. Include the solution for x in your answer. Round your answer to the nearest thousandth.
Answer:
5x - 2 = 8
5x = 8 + 2
5x = 10
x = 10/5
x = 2
The fastest pizza box folder can assemble 2 pizza boxes in 5 seconds. At this rate, how long would it take to assemble 20 pizza boxes?
Answer:
50 seconds
Step-by-step explanation:
2 boxes in 5 seconds
20÷2=10
10×5=50
50 seconds = 20 pizza boxes
Answer:
50
Step-by-step explanation:
2=5secs
20=?
to make 20 from 2 you do =2×10
so,
5×10=50seconds is the time he would take to assemble 20pizza boxes
Solve the inequality. Enter any fractions as reduced improper fractions. 4x ≤ -2/5(6x + 6) The solution is _____
Answer:
x≤ -3/8
Step-by-step explanation:
[tex]4x\le \:-\frac{2}{5}\left(6x+6\right)\\[/tex]
Expand ;
[tex]\mathrm{Expand\:}-\frac{2}{5}\left(6x+6\right):\quad -\frac{12}{5}x-\frac{12}{5}[/tex]
[tex]4x\le \:-\frac{12}{5}x-\frac{12}{5}\\\\\mathrm{Add\:}\frac{12}{5}x\mathrm{\:to\:both\:sides}\\\\4x+\frac{12}{5}x\le \:-\frac{12}{5}x-\frac{12}{5}+\frac{12}{5}x[/tex]
Simplify
[tex]\frac{32}{5}x\le \:-\frac{12}{5}\\\\Multiply \:both\:sides\:by\:5\\5\times\frac{32}{5}x\le \:5\left(-\frac{12}{5}\right)\\\\Simplify\\32x\le \:-12\\\\Divide \:both\:sides\:by\:32\\\frac{32x}{32}\le \frac{-12}{32}\\\\Simplify\\x\le \:-\frac{3}{8}[/tex]
Limit (sin4x-4sinx)/x^3 when x close to zero
[tex]\Large \boxed{\sf \bf \ \ \lim_{x\rightarrow0} \ {\dfrac{sin(4x)-4sin(x)}{x^3}}=-10 \ \ }[/tex]
Step-by-step explanation:
Hello, please consider the following.
Using Maclaurin series expansion, we can find an equivalent of sin(x) in the neighbourhood of 0.
[tex]sin(x) \sim \left(x-\dfrac{x^3}{3!}\right)\\\\\text{So, in the neighbourhood of 0}\\\\\begin{aligned}(sin(4x)-4sin(x)) &\sim \left( 4x-\dfrac{(4x)^3}{3!}-4x+\dfrac{4x^3}{3!}\right)\\\\&\sim \left(\dfrac{x^3*4*(1-4^2)}{3*2}\right)\\\\&\sim \left(\dfrac{x^3*2*(-15)}{3}\right)\\\\&\sim \left(x^3*2*(-5)\right)\\\\&\sim \left(x^3*(-10)\right)\\\end{aligned}[/tex]
Then,
[tex]\displaystyle \lim_{x\rightarrow0} \ {\dfrac{sin(4x)-4sin(x)}{x^3}}\\\\= \lim_{x\rightarrow0} \ {\dfrac{-10*x^3}{x^3}}\\\\=-10[/tex]
Thank you
Answer:
-10
Step-by-step explanation:
L' Hopital's rule can be used to solve it.
We search for lim (f(x)/g(x))
this is the same as lim (f' (x)/g' (x))
this is the same as lim f'' (x)/g'' (x)
so here we have f(x) =sin(4x)-4sin(x)
g(x)=x^3
g'' (x)= 6x
f'' (x)=-16sin(4x)+4sin(x)
so lim f'' (x) / g ''(x) = -16/6 lim sin(4x)/x + 4/6 lim (sin(x)/x)
= -16*4/6+4/6
=(-64+4)/6=-60/6=-10
v = s^2 + 1/2sh ; solve for h
please provide answer & clear explanation
Answer:
h = 2 (v − s²) / s
Step-by-step explanation:
v = s² + ½sh
Subtract s² from both sides.
v − s² = ½sh
Multiply both sides by 2.
2 (v − s²) = sh
Divide both sides by s.
2 (v − s²) / s = h
A 36 foot long rope is cut into two pieces, and one of the pieces is twice as large as the other. a. What does the variable 'x' mean in this problem? b. Set up an equation from the problem's description and your variable. c. Find the length of the two pieces of rope.
a.
x - the length of the shorter piece
b.
twice as large means:
2x - the length of the loger piece
so:
x + 2x - the sum of length of pieces {total of rope}
the equation: x + 2x = 36
c.
x + 2x = 36
3x = 36
÷3 ÷3
x = 12 ft
2x = 2×12 = 24 ft
The length of the shorter piece is 12 ft
The length of the loger piece is 24 ft
A whale that is 460 feet below sea level rises up and breaches out of water to a height of 27 feet above sea level. What is the vertical distance the whale travels.
Answer:
487ftStep-by-step explanation:
Let the initial point of of the sea level be 0. If the whale was initially 460 feet below sea level, then its distance from the surface of sea level to the 460ft below the sea level will be 460 - 0 = 460ft.
Also, if the whale rises up and breaches out of water to a height of 27 feet above sea level, then its distance from the surface of sea level to the 27ft above the sea level will be 0 - 27 = 27ft.
The vertical distance that the whale travels = distance from the sea level to 460ft below the sea level + distance from the sea level to 27ft above the sea level
The vertical distance that the whale travels = 460ft + 27ft
The vertical distance that the whale travels = 487ft
The sum of two numbers is twenty-five. One number is five less than the other.
Answer: x=15, y=10
*Note: x and y are only variables used to solve this problem, but know that the two numbers are 15 and 10.
Step-by-step explanation:
For this problem, we can use system of equations. Let's use x for one number and y for the other.
First Equation:
x+y=25
We get this equation because it states that the sum of the two numbers is 25.
Second Equation:
y=x-5
We get this equation because it says one number (y) is 5 less than the other (x).
Since we have two equations, we can use substitution method to solve.
[tex]x+(x-5)=25[/tex] [distribute 1 to (x-5)]
[tex]x+x-5=25[/tex] [combine like terms]
[tex]2x-5=25[/tex] [add both sides by 5]
[tex]2x=30[/tex] [divide both sides by 2]
[tex]x=15[/tex]
Now that we have x, we can plug it into any of the equations to find y.
[tex]x+y=25[/tex] [plug in x=15]
[tex]15+y=25[/tex] [subtract both sides by 15]
[tex]y=10[/tex]
Finally, we have our answer, x=15 and y=10.
Answer:25,-5
Step-by-step explanation:
You are selling cakes at a bake sale for $6.75 each. You spend $86 to buy ingredients and supplies.
There is no charge to have a table at the sale. Write an expression that shows your profit from
selling n cakes. Then find the profit if you sell 25 cakes.
Answer:
Profit from selling n cakes = $6.75n - $86
Profit from selling 25 cakes = $82.75
Step-by-step explanation:
You are selling cakes at a bake sale for $6.75 each.
You spend $86 to buy ingredients and supplies.
Profit from selling n cakes is;
Profit = Selling price - cost price
Profit = $6.75n - $86
Profit for selling 25 cakes is;
Profit = $6.75(25) - $86 = $82.75
The data below are the temperatures on randomly chosen days during the summer and the number of employee absences at a local company on those days. Construct a 95% prediction interval for y, the number of days absent,
given x = 95 degrees and y= 0.449x - 30.27
Temperature, x 72 85 91 90 88 98 75 100 80
Number of absences, y 3 7 10 10 8 15 4 15 5
Answer:
The critical region is t ≥ t(0.025, 7) = 2.365
Since the calculated value of t= 18.50249 falls in the critical region we reject the null hypothesis and conclude that there is sufficient reason to support the claim of a linear relationship between the two variables.
Step-by-step explanation:
We set up our hypotheses as
H0: β= 0 the two variable X and Y are not related
Ha: β ≠ 0. the two variables X and Y are related.
The significance level is set at α =0.05
The test statistic if, H0 is true, is t= b/s_b
Where Sb =S_yx/√(∑(X-X`)^2 )
Syx = √((∑(Y-Y`)^2 )/(n-2))
In the given question we have the estimated regression line as y= 0.449x - 30.27
X Y X2 Y2 XY
72 3 5184 9 216
85 7 7225 49 595
91 10 8281 100 910
90 10 8100 100 900
88 8 7744 64 704
98 15 9604 225 1470
75 4 5625 16 300
100 15 10000 225 1500
80 5 6400 25 400
∑779 77 68163 813 6995
Now finding the variances
∑(Y-Y`)^2 = ∑〖Y^2- a〗 ∑Y- b∑XY
= 813 – (- 30.27)77 - 0.449(6995)
= 813+2330.79 – 3140.755
= 3.035
∑(X-X`)^2 = ∑X^2 – (∑〖X)〗^2 /n
= 68163 – (779)2/9
= 736.22
Syx = √((∑(Y-Y`)^2 )/(n-2)) = √(3.035/7) = 0.65846 and
Sb =S_yx/√(∑(X-X`)^2 ) = (0.65846 )/27.13337 = 0.024267
t= b/s_b = 0.449/ 0.024267 = 18.50249
The critical region is t ≥ t(0.025, 7) = 2.365
Since the calculated value of t= 18.50249 falls in the critical region we reject the null hypothesis and conclude that there is sufficient reason to support the claim of a linear relationship between the two variables.
PLEASE HELP QUICKLY AS POSSIBLE THANK YOU:)
Answer:
10 c
Step-by-step explanation:
4 c = 2 qt
8c + 2c = 10c
Solve the equation: 61 – p = 14
Answer:
p= 47
Step-by-step explanation:
61 - p = 14
p = 61 - 14
p = 47.
Solve the following for y: 4x + 2y = −2 (5 points)
Answer:
y= -1-2x
Step-by-step explanation:
[tex]4x + 2y = −2[/tex]
Move 4x to the right and change it's sign
[tex]2y = - 2 - 4x[/tex]
Divide through by 2
[tex] \frac{2y}{2} = \frac{ - 2}{2} - \frac{4x}{2} [/tex]
Simplify
[tex]y = - 1 - 2x[/tex]
Is this the correct answer for a statistical question?
Answer:
yes it think
Step-by-step explanation:
You are correct. A statistical question is one where you apply things like random sampling and averages to answer questions such as choice B. With that many people, there's variability in the height so there isn't one set height. So instead we have an average height.
The other questions are simple straightforward answers that don't require statistics. There isn't any variability in the dataset for these types of questions.
(20a - 1) ÷ b when a= 2 and b= 13
Answer:
3
Step-by-step explanation:
(20a - 1) ÷ b
a = 2
b = 13
(20(2) - 1) ÷ 13
(40-1)÷13
39÷ 13
= 3
answer: 32a^{13}b
your welcome
Find the area of the triangle whose base is 12 cm and height is 4 cm.
Answer:
24 square cm
Step-by-step explanation:
[tex]area \: of \: \triangle = \frac{1}{2} \times base \times height \\ = \frac{1}{2} \times 12 \times 4 \\ = 6 \times 4 \\ = 24 \: {cm}^{2} \\ [/tex]
Does this seem as the correct answer?
The type of light waves that living things give off naturally is called O gamma radiation. infrared light. O visible light. O radio waves.
Answer:
Infrared light
Step-by-step explanation:
Infrared cameras capture heat signals from living or warm objects. Body heat is given off as infrared energy; our natural eyes can't see it.
Answer:
Infra-red Light
Step-by-step explanation:
Using the information regarding the proportion of work time linguists study a new language, choose the correct conclusion for this hypothesis test. H0:p=0.10 ; Ha:p>0.10 The p-value for this hypothesis test is 0.09. The level of significance is α=0.025 Select the correct answer below: A) There is sufficient evidence to conclude the proportion of work time linguists study a new language is more than 10%.
B) There is NOT sufficient evidence to conclude the proportion of work time linguists study a new language is more than 10%.
C) There is sufficient evidence to conclude the proportion of work time linguists study a new language is more than 90%.
D) There is NOT sufficient evidence to conclude the proportion of work time linguists study a new language is more than 90%.
Answer:
The correct option is B
Step-by-step explanation:
From the question we are told that
The null hypothesis is [tex]H_o : p = 0.10[/tex]
The alternative hypothesis is [tex]H_a : p > 0.10[/tex]
The p-value is [tex]p-value = 0.09[/tex]
The level of significance is [tex]\alpha = 0.025[/tex]
From the given values [tex]p-value > \alpha[/tex] so we fail to reject the null hypothesis
So there is NOT sufficient evidence to conclude the proportion of work time linguists study a new language is more than 10%.
Is A and V a collinear?
Yes
No
Answer:
yes
Step-by-step explanation:
yes because they are in the same line
What is the following lines is not parelle of y=4x+7
Answer: 4y - x = 8
y = 4x + 7
This equation is in slope-intercept form, which is y = mx + b, where m is the slope and b is the y-intercept. The slope of this line is 4. Parallel lines have the same slope, thus a line not parallel to this line will not have a slope of 4. Let's check which of these lines does not have a slope of 4.
y - 4x = 9
y = 9 + 4x (add 4x to both sides)
y = 4x + 9 (switch the constant and x-term)
This line has a slope of 4.
4x - y = 8
-y = 8 - 4x (subtract 4x from both sides)
y = -8 + 4x (divide both sides by -1)
y = 4x - 8 (switch the constant and x-term)
This line has a slope of 4.
4y - x = 8
4y = 8 + x (add x to both sides)
y = 8/4 + x/4 (divide both sides by 4)
y = x/4 + 2 (simplify and switch constant and x-term)
This line has a slope of 1/4. It is thus not parallel to the line y = 4x + 7.
Answer: 4y - x = 8
Hoped I helped
the sum of a number and five is seventeen what is the number?
3. If mZEFH = (5x + 1), mZHFG = 62°, and
mZEFG = (18x + 11), find each measure.
Answer/Step-by-step explanation:
Given:
m<EFH = (5x + 1)°
m<HFG = 62°
m<EFG = (18x + 11)°
Required:
1. Value of x
2. m<EFH
3. m<EFG
SOLUTION:
1. Value of x
m<EFH + m<HFG = m<EFG (angle addition postulate)
(5x + 1) + 62 = (18x + 11)
Solve for x using this equation
5x + 1 + 62 = 18x + 11
5x + 63 = 18x + 11
Subtract 18x from both sides
5x + 63 - 18x = 18x + 11 - 18x
-13x + 63 = 11
Subtract 63 from both sides
-13x + 63 - 63 = 11 - 63
-13x = -52
Divide both sides by -13
-13x/-13 = -52/-13
x = 4
2. m<EFH = 5x + 1
Plug in the value of x
m<EFH = 5(4) + 1 = 20 + 1 = 21°
3. m<EFG = 18x + 11
m<EFG = 18(4) + 11 = 72 + 11 = 83°
Order the following values from least to greatest |-2| |4.5| -7 3
Answer:
-7, |-2|, 3, |4.5|
Step-by-step explanation:
-7 is the lowest number, since it is a negative. The absolute value of -2, or |-2|, is 2 making it the second lowest. 3 comes next. The absolute value of 4.5 is 4.5, being the greatest number.
Answer:
-7, |-2|, 3, |4.5|
Step-by-step explanation:
First, let's find -2 and |4.5| .
Absolute value of a number is its distance from 0. Remember, absolute value is always zero or positive.
Now, let's use a number line to order the numbers. Numbers to the left are less than numbers to the right.
The values in order from least to greatest is as follows: -7, |-2|, 3, |4.5|.
What is the median of these data: 67,98,78,75,83,44,98
Answer:
Median is 78
Step-by-step explanation:
The median is the number where 50% of the other numbers are lower and 50% of the other numbers are higher, the middle, so in this case 78 is the middle number.
The median of the data sets 67, 98, 78, 75, 83, 44, and 98 will be 78.
What is a median?The median of the data is the middle value of the data which is also known as the central tendency of the data and is known as the median.
The data is given below.
67, 98, 78, 75, 83, 44, 98
Arrange the data set in ascending order, then the data set is given as,
44, 67, 75, 78, 83, 98, 98
The number of terms in the data set will be 7.
Then the median of the data set will be 78.
More about the median link is given below.
https://brainly.com/question/300591
#SPJ2
b) The following table provides information about production at the XYZ-TV Company. Number of Workers TVs Produced 0 0 1 35 2 68 3 99 4 128 5 155 How many workers will the XYZ-TV Company hire if the going wage for TV production workers is $16,000? Show your calculation in detail.
Answer:
5
Step-by-step explanation:
Given the following :
Number of workers - - TVs produced
0 - - - - - - - - - - - - - - - - - 0
1 - - - - - - - - - - - - - - - - - - 35
2 - - - - - - - - - - - - - - - - - 68
3 - - - - - - - - - - - - - - - - - - 99
4 - - - - - - - - - - - - - - - - - - 128
5 - - - - - - - - - - - - - - - - - - 155
We need to calculate the marginal product :
Workers - - - marginal product - - - value of m/p
0 - - - - - - - - - - - ____ - - - - - - - - - - - - - - __
1 - - - - - - - - - - - 35 (35 - 0) - - - - - - 35000
2 - - - - - - - - - - - - 33 (68 - 35) - - - - 33000
3 - - - - - - - - - - - - 31 (99 - 68) - - - - - 31000
4 - - - - - - - - - - - - 29 (128 - 99) - - - - - 29000
5 - - - - - - - - - - - - 27 (155 - 128) - - - 27000
The marginal product shows the change in output due to one additional unit of a certain input of production, in this case, number of workers. If the going wage of workers is $16,000, the company can afford to hire up to 5 workers and still make profit.