Answer :When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. When prices are expressed as a quantity of 1, such as $25 per ticket or $0.89 per can, they are called unit prices.
Step-by-step explanation:
A 90% confidence interval for the mean height of a population is This result is based on a sample of size 169. Construct a 99%confidence interval.
This question is incomplete, the complete question is;
A 90% confidence interval for the mean height of a population is 65.7 < μ < 67.3
This result is based on a sample of size 169.
Construct a 99%confidence interval.
Answer: at 99%, confidence interval is [ 65.2, 67.8 ]
Step-by-step explanation:
Given that;
confidence level = 90%
∝ = 1 - 90% = 1 - 0.9 = 0.1
the mean height of a population is 65.7 < μ < 67.3
so
x" - t_∝/2, n-1{standard Error] = 65.7 ----let this be equation 1
x" + t_∝/2, n-1{standard Error] = 67.3 -----let this be equation 2
where t∝/2, n-1 = t_0.1/2, 169 - 1 = t_0.05, 168 = 1.654 (t table)
now we add equation one and equation two
2x" = 65.7 + 67.3 = 133
x" = 66.5
next we subtract equation one from equation two
(x" + t_∝/2, n-1{standard Error]) - (x" - t_∝/2, n-1{standard Error])
= 67.3 - 65.7 = 1.6
so
2 × t_∝/2,n-1 × standard Error = 1.6
standard Error = 1.6 / (2 × t_∝/2,n-1)
we substitute
Standard Error = 1.6 / ( 2 × 1.654 ) = 1.6 / 3.308 = 0.48367
Now 99% confidence interval for μ is given as;
∝ = 1 - 0.99 = 0.01
x" ± t_∝/2, n-1{standard Error]
(x" ± t_0.01/2, 169-1 [standard Error])
where t_0.005, 168 = 2.6054 (t table)
now for Lower Bound: (x" - t_0.005, 168 [standard Error])
Lower Bound : ( 66.5 - (2.6054 × 0.48367))
= 66.5 - 1.26015 = 65.2398
Upper Bound : ( 66.5 + (2.6054 × 0.48367))
= 66.5 + 1.26015 = 67.7602
Therefore at 99%, confidence interval is [ 65.2, 67.8 ]
How many exact tenths are in 21.34. Why is it not 3?
Answer:
213.4 tenths
Step-by-step explanation:
It's not 3 probably because the question is asking how many tenths are in the whole number, and not just one section. So, there would be 213.4 tenths.
What did I do wrong??
Suki split five dog treats equally among her six dogs. Which fraction represents this division?
Answer Quick!!!
Answer:
5/6
Step-by-step explanation:
There are 5 dog treats among 6 dogs, so we divide 5 by 6 to get 5/6 of a treat.
On a coordinate plane, point B is at (negative 5, 2). B is located at (−5, 2). If B is reflected across the y-axis, the coordinates will be . If B is reflected across the x-axis, the coordinates will be .
Answer:
the anwser is (5,2) and (-5,-2)
Step-by-step explanation:
(y + 2)(y^2 - 2y + 3)
Answer:
y^3 - y + 6
Step-by-step explanation:
I believe this is right
A popular ride-sharing app charges an
initial booking fee plus $1.30 per mile. If a
14-mile ride costs $21.20, what is the booking
fee?
Answer:
2.20
Step-by-step explanation:
2.20
PLZ HELP! 1ST GETS BRAINILIEST!
What if Shana then considers a different brand of orange juice. She picks up a 25-ounce bottle that costs $4.50.
Which orange juice is the better price--the 16-ounce bottle or the 25-ounce bottle?
Answer:
i think the 25 ounce bottle
Step-by-step explanation:
The altitudes of a triangle _________ meet inside the triangle. *
A. Always
B. Sometimes
C. Never
Answer:
sometimes
Step-by-step explanation:
The three altitudes in an acute triangle all lie in the interior of the triangle and intersect inside the triangle. Two of the three altitudes in a right triangle are the legs of the triangle.
Help me out please!!! no work needed just give the answer
*Brainliest if correct*
Answer:
150 degrees
Step-by-step explanation:
(Sorry, I know you don't want one but I posted this and then started editing it so hopefully you saw the answer already and I'm not delaying you or anything)
The interior of a quadrilateral always adds up to 360 degrees. y+80 = 180 degrees since they're on a straight line.
We have 3 angles: y = 100, 50, and 60.
360 - (100+50+60)
= 360 - 210
= 150
Help again gonna mark soemone brainliest
Answer: The answer is C
Step-by-step explanation:
Because i did that question before.
Answer:
i think the answer is c or a
there are 3 rows of pictures on a wall. each row has 6 pictures. how many pictures are on the wall
Answer:
There are 18 pictures on the wall
Step-by-step explanation:
6 x 3 = 18
there is no way that simple multiplication is college level.
May I have brainliest please? :)
What is the value of x.
x=25.5
Step-by-step explanation:
6x-3+3x+6+5x=360
14x+3=360
14x=360-3
x=357/14
x=25.5
Four pounds of almonds cost $30, 7 pounds of almonds cost $52.50, and
12 pounds of almonds cost $90. Which equation gives the total cost y of
x pounds of almonds?
cloud is a vegetable grower, has 8 4/15 plots of pechay, 5 1/3 plots of eggplants and 5 2/5 of okra . how many plots of vetable do cloud has?
Answer:
The total plots of vegetable cloud will have: 19
Step-by-step explanation:
As the cloud has:
[tex]8\frac{4}{15}[/tex] plots of pechay[tex]5\frac{1}{3}[/tex] plots of eggplants[tex]5\frac{2}{5}[/tex] plots of okaraSo, the total plots of vegetable cloud will have:
[tex]8\frac{4}{15}+5\frac{1}{3}+5\frac{2}{5}[/tex]
[tex]=\frac{124}{15}+\frac{16}{3}+\frac{27}{5}[/tex]
[tex]=\frac{124}{15}+\frac{80}{15}+\frac{81}{15}[/tex]
[tex]=\frac{124+80+81}{15}[/tex]
[tex]=19[/tex]
Therefore, the total plots of vegetable cloud will have: 19
Find the antiderivative of f (x) = 10x4 + 12.5.
Answer:
The anti-derivative of f(x) will be:
[tex]\int \:10x^4+12.5dx=2x^5+12.5x+C[/tex]
Step-by-step explanation:
Given the function
[tex]\:f\left(x\right)=10x^4\:+\:12.5[/tex]
Taking the anti-derivative of f(x)
[tex]\int \left(10x^4\:+\:12.5\right)\:dx\:[/tex]
[tex]\mathrm{Apply\:the\:Sum\:Rule}:\quad \int f\left(x\right)\pm g\left(x\right)dx=\int f\left(x\right)dx\pm \int g\left(x\right)dx[/tex]
[tex]\int \left(10x^4\:+\:12.5\right)\:dx\:=\int \:10x^4dx+\int \:12.5dx[/tex]
Solving
[tex]\int 10x^4dx[/tex]
[tex]\mathrm{Take\:the\:constant\:out}:\quad \int a\cdot f\left(x\right)dx=a\cdot \int f\left(x\right)dx[/tex]
[tex]=10\cdot \int \:x^4dx[/tex]
[tex]\mathrm{Apply\:the\:Power\:Rule}:\quad \int x^adx=\frac{x^{a+1}}{a+1},\:\quad \:a\ne -1[/tex]
[tex]=2x^5[/tex]
similarly,
[tex]\int 12.5dx[/tex]
[tex]\mathrm{Integral\:of\:a\:constant}:\quad \int adx=ax[/tex]
[tex]=12.5x[/tex]
so substituting these values
[tex]\int \left(10x^4\:+\:12.5\right)\:dx\:=\int \:10x^4dx+\int \:12.5dx[/tex]
[tex]=2x^5+12.5x[/tex]
[tex]=2x^5+12.5x+C[/tex] ∵ Add constant to the solution
Therefore, the anti-derivative of f(x) will be:
[tex]\int \:10x^4+12.5dx=2x^5+12.5x+C[/tex]
How do you do this question?
Answer:
k=±6/7
Step-by-step explanation:
At part (b)
1 - 0
2- Asin(kt) +Acos(kt)
3- 36A
4- 36-49k^2
5- 0
6- 36/49
Question on square roots!!! Please help
Answer:
D
i took a test that had a question that was the same
Find the quotient:
–37.44 ÷ 4.8
Check reasonableness by estimating:
–37.44 Almost-equals
4.8 Almost-equals
Estimated quotient:
Answer:
heres the answer
Step-by-step explanation:
(Im giving brainliest and extra points on this one :D)
Solve six and two sixths times one and one half.
A) six and two twelfths
B) eight and six twelfths
C) nine and six twelfths
D) ten and two twelfths
Answer:
C
Step-by-step explanation:
Convert to improper fraction and multiply them, then convert back to mixed fraction :)
Answer:
C . The answer can be simplified but its not on here for some reason.
Step-by-step explanation:
6 2/6 x 1 1/2
(6 x 6) + 2 = 38/6
(1 x 2) + 1 = 3/2
38/6 x 3/2 = 114/12
114 ÷ 12 = 9 6/12.
9 6/12 = 9 3/6 = 9 1/2.
C
Again it can be simplified buts it not on here for some reason.
Solve for u.
-24 = u ÷ 6
About 20% of the kids will attend an overnight summer camp, will attend day camp, and 0.22 will attend no summer camp at all. Which group of kids is
the greatest?
Ovemight Camp
O Day Camp
No Camp
GIVING OUT BRAINLIEST TO FIRST ✅CORRECT✅ ANSWER
Answer:
1,-5 and -1,-3
Step-by-step explanation:
the product of the first 3 terms of a G.P is 1000 if we add 6 to its second term and 7 to its third term the three forms an A.P .find the terms of G.P
Answer:the product of the first 3 terms of a G.P is 1000 if we add 6 to its second term and 7 to its third term the three forms an A.P .find the terms of G.P
Step-by-step explanation:
the product of the first 3 terms of a G.P is 1000 if we add 6 to its second term and 7 to its third term the three forms an A.P .find the terms of G.P
Answer:
What grade is this?
-by-step explanation:
please solve in detail
Answer:
x = 4
Step-by-step explanation:
the explanation is in the images
What percentage of a dollar is the value of 5 quarters and 1 dime
Answer:
135%
Step-by-step explanation:
The quarters percentage is 125% and the dime is 10% and that equals 135%
(20 POINTS!!!!) Terry realized that 25% of his money was $12.50. He made a double number line to represent this. What number would go in the first missing box?
Step-by-step explanation:
try 12.50x25% i think
Answer:
25.00 and 50
Step-by-step explanation:
In the 2nd week of the year Carrie had $700 in her savings account. At 5 weeks she had $325. What is the equation that represents this situation?
Answer:
y = 125x + 75
Step-by-step explanation:
Let x represents the week and
Let y represent the balance
When x = 2, y = 325.
This means
(x1,y1) = (2,325)
When x = 5, y = 700
This means
(x2,y2) = (5,700)
Required
Determine the equation
First, we need to solve for m, the slope
m = ∆y/∆x
i.e.
m = (y2 - y1)/(x2 - x1)
Substitute values for x and y
m = (700 - 325)/(5 - 2)
m = 375/3
m = 125
Next, we calculate the equation in slope intercept form using
y - y1 = m(x - x1)
Substitute values for m, x1 and y1
y - 325 = 125(x - 2)
y - 325 = 125x - 250
Collect like terms
y = 125x - 250 + 325
y = 125x + 75
Hence, the equation is:
y = 125x + 75
Answer: x=-125+950
Step-by-step explanation:
The value went from 700 to 325 in 3 weeks
700-325= 375 /3 =125
0=950
1=825
2=700
3=575
4=450
5=325
If you cant tell I hate percents :)
A group of friends went to lunch. Click on all the correct answers below according to the Letters A, B, and C.
A Their original bill cost $50.00, but they had a coupon for 20% off their meal. Find the discounted price (before tax and tip).
B A sales tax of 7% was added. What was the total amount including sales tax?
C The group chose to tip 20%. What is the total amount that their bill cost including tax and tip?
Determine the x- and y- intercepts for the graph defined by the given equation.
y = x + 8
a. x-intercept is (0,8)
c. x-intercept is (-8, 0)
y-intercept is (-8, 0)
y-intercept is (0,8)
b. x-intercept is (0, -8)
d. x-intercept is (8,0)
y-intercept is (8,0)
y-intercept is (0, -8)
The required correct answer is (a) x-intercept is (-8,0) and the y-intercept is (0,8).
What is the intercept in the equation?In the context of a linear equation, an intercept is a point where the graph of the equation crosses or intersects with one of the axes in a coordinate system. There are two types of intercepts:
x-intercept: the point where the graph crosses the x-axis. It occurs when y = 0. In other words, the x-intercept is the value of x when y = 0 in the equation.y-intercept: the point where the graph crosses the y-axis. It occurs when x = 0. In other words, the y-intercept is the value of y when x = 0 in the equation.Here,
To find the x-intercept, we set y = 0 in the equation y = x + 8 and solve for x:
0 = x + 8
x = -8
Therefore, the x-intercept is (-8, 0).
To find the y-intercept, we set x = 0 in the equation y = x + 8 and solve for y:
y = 0 + 8
y = 8
Therefore, the y-intercept is (0, 8).
So the correct answer is (a) the x-intercept is (-8,0) and the y-intercept is (0,8).
Learn more about intercept here:
https://brainly.com/question/3605446
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