help me understand whts happening here
Answer:
No
Step-by-step explanation:
The ratios are not common
Answer:
No
Step-by-step explanation:
the ratios are not common.
A rock has a mass of 1,400 pounds. What is the mass of the rock in ounces? How many tons?
A. The mass of the rock in ounce is 22400 ounce.
B. The mass of the rock in ton is 0.7 ton
Conversion scale 1 pound = 16 ounce1 pound = 0.0005 tonA. How to determine the mass in ounce Mass (in pound) = 1400 poundMass (in ounce) =?1 pound = 16 ounce
Therefore,
1400 pound =1400 × 16
1400 pound = 22400 ounce
B. How to determine the mass in ton Mass (in pound) = 1400 poundMass (in ton) =?1 pound = 0.0005 ton
Therefore,
1400 pound =1400 × 0.0005
1400 pound = 0.7 ton
Learn more about conversion:
https://brainly.com/question/2139943
Ben says the measure of the angle is
50
°
, but Jeff says it is
130
°
.
Who is correct, Ben or Jeff? Explain your reasoning for your answer.
Answer:
Ben
Step-by-step explanation:
Ben is correct. because you have to start 0° from right hand side.
ILL GIVEE POINTS PLEASE HELP
Answer:
Denominators
Step-by-step explanation:
a. 4
b. 7
c. 3
d. 3
Just divide the denominator of the fractions
what is the perimeter
Answer:
wouldt be 112,000?
Step-by-step explanation:
Dont you do 10x9x4x4??
That is how i was tought how to do it. I dont know about you.
Answer:
80
Step-by-step explanation:
The 4 doesn't matter right now unless you were solving for area. Visualize the shape as a normal rectangle with no cut out. That would make the bottom line 10+10+10 which equals 30. The top line is the same as the bottom, so that would also be 30. Then you just have the two sides which are both 10, combined them and they would add up to 20. Perimeter is the distance around the edge of a shape. You find the perimeter by adding up the distance of all the sides. So in conclusion, you're answer will be 30+30+10+10 which equals 80.
The distance Charles c runs one day is increased by two. If he runs that new distance three times, write an expression to represent the distance Charles ran.
Answer:
3c-6
Step-by-step explanation:
One day is c-2 so we need to multiply by 3. We get 3(c-2) or 3c-6.
Tip: use the variables/numbers in the problem to form an equation. Then, simplify.
WHAT TIME IS HALF PAST THREE???
Answer:
three-thirty (3:30)
Step-by-step explanation:
An hour is 60 minutes, so half an hour would be 30 minutes. Half past 3 would also be 30 minutes past 3, or 3:30.
I hope this helps!! :) Have a lovely day!!!
[tex] \rm\sum_{n = 1}^ \infty ( - 1 {)}^{n + 1} \int^{ \infty }_{0} \frac{ \sqrt{ {x}^{2n - 3} } \: {tan}^{ - 1}( {x}^{2n - 1} )}{1 + {x}^{2n - 1} } \: dx\\ [/tex]
Substitute [tex]y = x^{\frac{2n-1}2}[/tex] and [tex]dy = \frac{2n-1}2 x^{\frac{2n-3}2} \, dx[/tex]. Then the integral is
[tex]\displaystyle \int_0^\infty \frac{x^{\frac{2n-3}2} \tan^{-1}\left(x^{2n-1}\right)}{1 + x^{2n-1}} \, dx = \frac2{2n-1} \underbrace{\int_0^\infty \frac{\tan^{-1}\left(y^2\right)}{1 + y^2} \, dy}_I[/tex]
which is to say, the integral is now independent of n. Then
[tex]\displaystyle \sum_{n=1}^\infty (-1)^{n+1} \int_0^\infty \frac{x^{\frac{2n-3}2} \tan^{-1}\left(x^{2n-1}\right)}{1+x^{2n-1}} \, dx = I \sum_{n=1}^\infty \frac{2(-1)^{n+1}}{2n-1}[/tex]
Let's evaluate the sum. Recall that if |x| < 1, we have
[tex]\displaystyle \frac1{1-x} = \sum_{n=0}^\infty x^n[/tex]
which means
[tex]\displaystyle \frac1{1+x^2} = \frac1{1-(-x^2)} = \sum_{n=0}^\infty \left(-x^2\right)^n = \sum_{n=0}^\infty (-1)^n x^{2n}[/tex]
By the fundamental theorem of calculus, integrating both sides gives
[tex]\displaystyle \tan^{-1}(x) = \sum_{n=0}^\infty (-1)^n \frac{x^{2n+1}}{2n+1} = \sum_{n=1}^\infty (-1)^{n+1} \frac{x^{2n-1}}{2n-1}[/tex]
As x approaches 1 from below, we have
[tex]\displaystyle \lim_{x\to1^-} \tan^{-1}(x) = \lim_{x\to1^-} \sum_{n=1}^\infty (-1)^{n+1} \frac{x^{2n-1}}{2n-1}[/tex]
[tex]\displaystyle \frac\pi4 = \sum_{n=1}^\infty \frac{(-1)^{n+1}}{2n-1} \left(\lim\limits_{x\to1^-} x^{2n-1}\right) = \sum_{n=1}^\infty \frac{(-1)^{n+1}}{2n-1}[/tex]
and so
[tex]\displaystyle \sum_{n=1}^\infty (-1)^{n+1} \int_0^\infty \frac{x^{\frac{2n-3}2} \tan^{-1}\left(x^{2n-1}\right)}{1+x^{2n-1}} \, dx = \frac\pi2 I[/tex]
Now compute the remaining integral. First split it at y = 1 :
[tex]\displaystyle I = \int_0^1 \frac{\tan^{-1}\left(y^2\right)}{1 + y^2} \, dy + \int_1^\infty \frac{\tan^{-1}\left(y^2\right)}{1 + y^2} \, dy[/tex]
In the second integral, notice that replacing [tex]z=\frac1y[/tex] and [tex]dy = -\frac{dz}{z^2}[/tex] yields
[tex]\displaystyle \int_1^\infty \frac{\tan^{-1}\left(y^2\right)}{1 + y^2} \, dy = - \int_1^0 \frac{\tan^{-1}\left(\frac1{z^2}\right)}{1 + \frac1{z^2}} \, \frac{dz}{z^2} = \int_0^1 \frac{\tan^{-1}\left(\frac1{z^2}\right)}{1+z^2} \, dz[/tex]
The inverse tangent function has the property
[tex]\tan^{-1}(x) = \dfrac\pi2 - \tan^{-1}\left(\dfrac1x\right)[/tex]
so it follows that
[tex]\displaystyle \int_0^1 \frac{\tan^{-1}\left(\frac1{z^2}\right)}{1+z^2} \, dz = \frac\pi2 \int_0^1 \frac{dz}{1+z^2} - \int_0^1 \frac{\tan^{-1}(z^2)}{1+z^2} \, dz[/tex]
and hence
[tex]\displaystyle I = \int_0^1 \frac{\tan^{-1}\left(y^2\right)}{1 + y^2} \, dy + \frac\pi2 \int_0^1 \frac{dz}{1+z^2} - \int_0^1 \frac{\tan^{-1}(z^2)}{1+z^2} \, dz[/tex]
[tex]\displaystyle I = \frac\pi2 \int_0^1 \frac{dz}{1+z^2}[/tex]
[tex]I = \dfrac\pi2 \times \dfrac\pi4 = \dfrac{\pi^2}8[/tex]
Then the original expression has an exact value of
[tex]\displaystyle \sum_{n=1}^\infty (-1)^{n+1} \int_0^\infty \frac{x^{\frac{2n-3}2} \tan^{-1}\left(x^{2n-1}\right)}{1+x^{2n-1}} \, dx = \frac\pi2 \times \frac{\pi^2}8 = \boxed{\frac{\pi^3}{16}}[/tex]
What's the answer????
Answer:
7
Step-by-step explanation:
2(3)(0) + 7
6(0) + 7
0 + 7
7
Have an amazing day!
PLEASE RATE!
The Downtown Community Barbecue served 363 dinners. A child’s plate cost $4.20 and an adult’s plate cost $9.00. A total of $2,681.40 was collected. How many of each type of plate was served?
Answer:
there were 223 child plates and 149 adult plates
Step-by-step explanation:
There were 223 child plates.
Since there were a total of 372 plates, there will be 149 adult plates (223 + 149 = 372)
To verify, the total amount raised would be $2121.50:
3.50c + 9a = 2121.50
3.50*223 + 9*149 = 780.50 + 1341.00= $2121.50
6. At the movies, Aaron buys popcorn for
$5.25 and a bottle of water for $2.50. He
pays with a $10 bill. How much change
should Aaron
receive?
ublishing Company
Answer:
$2.25
Step-by-step explanation:
First, you have to add the amount that Aaron paid. Then, subtract it from 10, which is the amount of the bill he is paying with.
5.25 + 2.50 = 7.75
10-7.75 = 2.25
Answer:
$2.25
Step-by-step explanation:
First, we will find out how much he needs to pay.
$5.25 + $2.50 = $7.75
Then, we will find the amount of change he should receive.
$10.00 - $7.75 = $2.25
The sum of two numbers is 52. If one number is
7/6
times the second number, then find the largest
Answer:
28
Step-by-step explanation:
Given:
sum of two numbers = 52one number is 7/6 times the second numberLet [tex]x[/tex] = first number
[tex]\implies \dfrac76x = \textsf{second number}[/tex]
Therefore, as the sum of the two numbers is 52:
[tex]\implies \dfrac76x+x=52[/tex]
[tex]\implies \dfrac76x+\dfrac66x=52[/tex]
[tex]\implies \dfrac{13}{6}x=52[/tex]
[tex]\implies13x=52 \cdot 6[/tex]
[tex]\implies13x=312[/tex]
[tex]\implies x=\dfrac{312}{13}[/tex]
[tex]\implies x=24[/tex]
Therefore, the largest number is:
[tex]\implies \dfrac76\cdot 24 =\dfrac{168}{6}=28[/tex]
PLSS HELP I WILL MARK BRAINLIEST!! A bag of Skittles has 21 purple Skittles. This represents 30% of all Skittles in the bag. how many Skittles are in the bag?
Answer:
70
Step-by-step explanation:
if 21 is 30%, divide 21 by 3 for get 7, which is 10%. Now multiply 7 by 10 to get 70 which is 100%
Hey! 70 skittles is your answer. My work's below!
- - - - - - - - - - - - - - - - - - - -
First, use this formula:
a certain percent (%) = a certain number (#)
# x 100 / %
- - - - - - - - - - - - - - - - - - - -
In this scenario...
30% = 21 (your provided numbers)
21 x 100 / 30 (the formula in action)
2,100 / 30 = 70
(2,100 is the result of 21 x 100, so divided by 30 you have 70!)
- - - - - - - - - - - - - - - - - - - -
Good luck! :)
~pinetree
WILL GIVE BRAINLIEST.
Answer:
B is the better buy.
Step-by-step explanation:
A: conical container: volume = π(6/2)²*9/3 = 27π
B: cylindrical container: volume = π(6/2)²*9 = 81π
Cost per unit volume:
A: $1.75/(27π) = $0.0206
B: $3.75/(81π) = $0.0147
So B is cheaper.
B is the better buy.
The width of a vegetable garden is į times its length.
If the length of the garden is 7 feet, what is the width
in simplest form?
Answer:
I guess it's 6 but I'm not really sure about my answer
320 percent of 360 is what ?
Answer:
Step-by-step explanation:
320% 360 = ?
320/100 * 360 =
3.2*360 = 1152
I need help with a math problem.
Answer:
Webmath is a math-help web site that generates answers to specific math questions and problems, as entered by a user, at any particular moment.
463 of 615 people who were asked question 1 favored the law. 403 of 585 people who were asked question 2 favored the law. Is there evidence that the phrasing may have influenced responses
Using the z-distribution, as we are working with a proportion, it is found that there is evidence that the phrasing may have influenced responses.
What are the hypotheses tested?At the null hypothesis, it is tested if there is no difference between the proportions, that is:
[tex]H_0: p_1 - p_2 = 0[/tex]
At the alternative hypothesis, it is tested if there is difference, that is:
[tex]H_1: p_1 - p_2 \neq 0[/tex]
What is the mean and the standard of the distribution of the differences of sample proportions?For each sample, we have that:
[tex]p_1 = \frac{463}{615} = 0.7528, s_1 = \sqrt{\frac{0.7528(0.2472)}{615}} = 0.0174[/tex]
[tex]p_2 = \frac{403}{585} = 0.6889, s_2 = \sqrt{\frac{0.6889(0.3111)}{585}} = 0.0191[/tex]
For the distribution of differences, we have that:
[tex]\overline{p} = p_1 - p_2 = 0.7528 - 0.6889 = 0.0639[/tex]
[tex]s = \sqrt{s_1^2 + s_2^2} = \sqrt{0.0174^2 + 0.0191^2} = 0.0258[/tex]
What is the test statistic?It is given by:
[tex]z = \frac{\overline{p} - \mu}{s}[/tex]
In which [tex]\mu = 0[/tex] is the value tested at the null hypothesis.
Hence:
[tex]z = \frac{\overline{p} - \mu}{s}[/tex]
[tex]z = \frac{0.0639 - 0}{0.0258}[/tex]
[tex]z = 2.47[/tex]
What is the decision?Considering a two-tailed test, as we are testing if the proportion is different of a value, and a significance level of 0.05, the critical value is [tex]|z^{\ast}| = 1.96[/tex].
Since the absolute value of the test statistic is greater than the critical value, it is found that there is evidence that the phrasing may have influenced responses.
More can be learned about the z-distribution at https://brainly.com/question/26454209
Pls help me …….I really need help
Answer:
The least common denominator for 1/3 and 5/11 is 33, and the least common denominator for 4/5 and 1/6 is 30! Hope this helps.
Step-by-step explanation:
The area of a rectangular field is 3696 m square. If the length of the field is 66 m, what is its width?
Answer:
The answer is 56m
Step-by-step explanation:
3696m³÷66m=56m
Hope this help!!
Width be x
ATQ
[tex]\\ \rm\hookrightarrow Area=Length\times breadth [/tex]
[tex]\\ \rm\hookrightarrow 66x=3696[/tex]
[tex]\\ \rm\hookrightarrow x=3696/66[/tex]
[tex]\\ \rm\hookrightarrow x=56m[/tex]
please help me please
Answer:
24.123
Step-by-step explanation:
Simplify 6.7 + 3 to 9.7
9.7 + 9.863 + 4.56
Simplify 9.7 + 9.863 to 19.563
19.563 + 4.56
Simplify
24.123
NEED HELP ASAP 100 POINTS AND WILL GIVE BRAINLIEST!!!
Answer:
area of a deck
A= External area - Internal area
A = length x width
A = ( 44ft x 28ft) - ( 32ft x 16ft)
A = 720ft²
What is the percent of the numbers 12% of 85
Answer:
Step-by-step explanation:
12% of 85 =x Change the % to a fraction
12/100 * 85 = x Divide 100 into 85
12 * 0.85 = x Multiply by 12
10.2 = x
The product of y and 9 is at most -18.
Answer:
y = -2
Step-by-step explanation:
Y × 9 = -18
Y = -18 / 9
Y = -2
When coverting centimeters to inches,do you multiply or divide by 2.54?Explain. If someone Explains and gets it correct tell me and i will make a question called i eat apple pie and i give them 85 points
Answer:
Divide by 2.54
Step-by-step explanation:
Because a centimeter is smaller than an inch, you have to divide by 2.54 when converting from cm to inches.
If A and B are independent events with P(A) = 0.4 and P(B) = 0.6, find P(A AND B).
Answer:
= 0.25
Step-by-step explanation:
p (A)= 0.4
P (B)= 0.6
P (A and B) = P (A) × P (B)
= ( 0.4 × 0.6 )
= 0.25
The formula c(x) = 0.45 +0.2(x - 1) can be used to find the cost of mailing a letter that
weighs 2 ounces or more. Find the formula for
c'(x)
Answer:
Step-by-step explanation:
Remark.
I take it that this is a calculus question question.
Expand c(x)
c(x) = 0.45 + 0.2x - 0.2 Combine
c(x) = 0.25 + 0.2x/dx
c(x) = 0.2
Salma runs 7 miles in 50 minutes. At the same rate, how many miles would she run in 75 minutes?
Answer:
10.5
Step-by-step explanation:
you half 50 minutes to get 25 so you do the same to the seven to get 3.5 and then you add 7 and 3.5 together
Write a word expression for the problem using math vocabulary.
6k + 23
Hello.
First, we have a number k multiplied by 6, so we write
6 times a number k
or
6 times k
Now, we also add 23.
We can write it as
the product of 6 and k plus 23
or
6 times k plus 23
I hope it helps.
Have a nice day.
[tex]\boxed{imperturbability}[/tex]
Uhh word words word solve equation words-
Answer:
54°
Step-by-step explanation:
In the given question we would like to solve for x .The two marked angles here are vertically opposite angles . And vertically opposite angles are equal .
So here (2x +2)° and (3x - 52)° are equal. Therefore,
[tex]\longrightarrow 2x + 2^o = 3x - 52^o\\ [/tex]
[tex]\longrightarrow 2x - 3x = -52^o -2^o \\ [/tex]
[tex]\longrightarrow -x = -54^o\\[/tex]
[tex]\longrightarrow \underline{\underline{\boldsymbol{ x = 54^o }}} [/tex]
Hence the value of x is 54°
And we are done!
Answer :
54°Explanation :
When two straight lines intersect each other, then the pairs of angles so formed without any common arm are called vertically opposite angles.Here,
[tex] \longrightarrow \sf \qquad \: (3x - 52) {}^{ \circ} = (2x + 2) {}^{ \circ} [/tex]
[tex]\longrightarrow \sf \qquad \: 3x - 2x = 2 {}^{ \circ} + {52}^{ \circ} [/tex]
[tex]\longrightarrow \bf \qquad \: x = {54}^{ \circ}[/tex]