Answer:
The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 8 - 1 = 7
95% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 7 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.95}{2} = 0.975[/tex]. So we have T = 2.3246
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 2.3646\frac{0.06}{\sqrt{8}} = 0.0502[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 0.32 - 0.0502 = 0.2698 mg/kg
The upper end of the interval is the sample mean added to M. So it is 0.32 + 0.0502 = 0.3702 mg/kg
The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).
3. Which of the following is a myth about financial aid ? a) you have to make a certain income to qualify b ) the # of people in your family is used to determine what you may qualify for C)your parents previous year tax return is used
4. Which is the correct order of the financial aid process ?
a) SAR, Financial Aid Package, FAFSA
b) Financial Aid Package, FAFSA, SAR
C) FAFSA, Financial Aid Package, SAR
d) FAFSA, SAR, Financial Aid Package
Which composite figure is made up of a cone and a cylinder?
Answer:A composite 3D figure is a three dimensional figure made up of basic three dimensional figures such as cubes, prisms, pyramids, cylinders, cones,
Step-by-step explanation:To find the area of a composite figure or other irregular-shaped figure, divide it into simple, nonoverlapping figures. Find the area of each simpler figure, and then add the areas together to find the total area of the composite figure.
Jared bought 7 cans of paint. A can of red paint costs $3.75. A can of black paint costs $2.75. Jared spent $22.25 in all. How many cans of black (b) and how many cans of red (r) did he buy? r+b=7 3.75r+2.75b=22.25 [?] red [ black Enter
Answer:
b = 4
r = 3
Step-by-step explanation:
r + b = 7
solve for 'r' to get r = 7-b
now substitute '7-b' for r in the second equation:
3.75(7-b) + 2.75b = 22.25
26.25 - 3.75b + 2.75b = 22.25
-b = -4
b = 4
r = 3
Jared bought 3 cans of red paint (r = 3) and 4 cans of black paint (b = 4).
To solve this problem, using algebraic equations. Jared recently bought cans of red and black paint, and we want to find out how many cans of each color he purchased. We know that the cost of a red can is $3.75, the cost of a black can is $2.75, and Jared spent a total of $22.25 on the paint. We will set up two equations based on the given information and solve them simultaneously to find the values of "r" (number of red cans) and "b" (number of black cans).
Let's use the following variables:
r : Number of red cans purchased
b : Number of black cans purchased
Now, we can set up two equations based on the information given in the problem:
1. The total number of cans purchased:
Since Jared bought 7 cans in total, we can write this as:
r + b = 7 ... (Equation 1)
2. The total cost of the cans:
The cost of each red can is $3.75, so the total cost of all red cans is 3.75r. The cost of each black can is $2.75, so the total cost of all black cans is 2.75b. Jared spent a total of $22.25, so we can write this as:
3.75r + 2.75b = 22.25 ... (Equation 2)
Now, we have a system of two equations with two variables. We will use the method of substitution or elimination to solve for r and b.
Using substitution, we can rearrange Equation 1 to solve for r:
r = 7 - b
Now, we can substitute this value of r into Equation 2:
3.75(7 - b) + 2.75b = 22.25
Next, distribute and simplify the equation:
26.25 - 3.75b + 2.75b = 22.25
Combine the b terms:
-1b = 22.25 - 26.25
Simplify further:
-1b = -4
Finally, divide both sides by -1 to find the value of b:
b = 4
Now that we have the value of b, we can find r by substituting the value of b into Equation 1:
r + 4 = 7
Subtract 4 from both sides:
r = 7 - 4
r = 3
Therefore, Jared bought 3 cans of red paint (r = 3) and 4 cans of black paint (b = 4).
To know more about Algebraic Equations here
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A square pyramid has a volume of 864 in. The height of the pyramid is 18 in. What is the length of one of the side
of the base?
What is the total volume of this composite shape? Round your answer to the nearest tenth.
In a lab experiment, 610 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 23 hours. How long would it be, to the nearest tenth of an hour, until there are 1040 bacteria present?
Answer:
It would take 19 hours and 36 minutes until there are 1040 bacteria present.
Step-by-step explanation:
Given that in a lab experiment, 610 bacteria are placed in a petri dish, and the conditions are such that the number of bacteria is able to double every 23 hours, to determine how long would it be, to the nearest tenth of an hour, until there are 1040 bacteria present, the following calculation must be performed:
610X = 1040
X = 1040/610
X = 1.7049
2 = 23
1.7049 = X
1.7049 x 23/2 = X
39.2131 / 2 = X
19.6 = X
100 = 60
60 = X
60 x 60/100 = X
36 = X
Therefore, it would take 19 hours and 36 minutes until there are 1040 bacteria present.
find the value of x in the triangle shown below.
Answer:
62°
Step-by-step explanation:
In an isosceles triangle, angle opposite to equal sides are equal.
So according to angle sum property :
x + x + 56 = 180
2x + 56 = 180
x = 180 - 56 /2
x = 62°
write
[tex] \frac{22 }{4} [/tex]
as a mixed number in its simplest form
A company is developing packaging for a new product as shown below.
Choose all of the expressions that can be used to find the volume of the packaging
4 m
2 m
9 m
2 m
3 m
4 m
4 m
A (2 * 3 * 4) + (2 * 9 * 2)
B. (2 4* 3) + (2 * 9 * 4)
C. (2 * 4 * 3) + (4 * 9 * 4)
D. (3 * 4 * 4) + (
292)
E (3 * 4 * 4) + (6 * 4 * 2)
Answer:It B and C
Step-by-step explanation:
ANSWER ASAP DONT SEND A FILE. IS THIS SHAPE A ROTATION, REFLECTION,TRANSLATION, DILATION OR NONE????
Answer:
Rotation
Step-by-step explanation:
Its not a dilation because that is making a shape bigger or smaller, assuming you can only do one it cant be a reflection. and none is wrong. so It has to be rotation
difference between apr and interest rate
A number cube for a game has a volume of 64 mm3.
What is the length of one side of the cube?
A. 3.27 mm
B. 4 mm
C. 6.46 mm
D. 8 mm
(Please explain why)
Answer:
B. 4mm
Step-by-step explanation:
A cube is a 3d square, so the length, width, and height are equal. To find the volume you have to times all three of those things. 4^3 or 4 * 4 * 4, is 64.
Answer:
B is the answer ill come back if it's wrong
Update: Its correct
Step-by-step explanation:
The juice dispenser in the cafeteria holds 30 1/3 pints of juice. The glasses in the cafeteria only hold of a pint of juice. How many full glasses can be served at breakfast?
Answer:
A) 91
Step-by-step explanation:
30 1/3 ÷ 1/3
91/3 × 3/1 = 91
A cheetah runs at a speed of 180 kmph. It covers a distance of 400 m in:
Answer:
8 second
Step-by-step explanation:
400/180,000 × 3,600 second =
1,440,000/180, 000 = 8 second
Answer: 8 second
Step-by-step explanation:
please help me! fill in the blank with a number to make an expression a perfect square
[tex]\huge\pink{Answer} \: \: \huge\gray{is} \: \: \huge\mathfrak \green{16}[/tex]
Mark As brainliesthi what is the answerr??
Given:
The rule of input and output function is:
[tex]25-g[/tex]
To find:
The answer if we put 19.
Solution:
Consider the input and output function is:
[tex]f(g)=25-g[/tex]
Substitute [tex]g=19[/tex], we get
[tex]f(19)=25-19[/tex]
[tex]f(19)=6[/tex]
Therefore, the required answer is 6.
In a right triangle, which of the following is the value of the missing side b if a = 5 cm and the hypotenuse is c = 13 cm?
Answer:
hi there so if a = 5cm b =12cm c=13cm the area is 30cm the perimeter 30cm
Step-by-step explanation:
Fatia types 5 pages in the same
amount of time that Mya types 7.5
pages. If Fatia and Mya start
typing at the same time, how many
pages will Mya have typed when
Fatia has typed 13 pages?
I WILL GIVE BRAINILY... I need the full equation ASAP THANK YOU!!
Answer:
[tex]y=\frac{9}{10} x-\frac{7}{5}[/tex]
Step-by-step explanation:
points on the line:- (-4,-5)&(6,4)
slope= 4+5/6+4= 9/10
y-4=9/10(x-6)
y=9x/10-54/10+4
y=9/10 x-7/5
✄┈┈┈┈┈┈┈┈┈┈┈┈┈┈«
┍━━━━ ⋆⋅☆⋅⋆ ━━━━┑
hope it helps..
have a great day!!
┕━━━━ ⋆⋅☆⋅⋆ ━━━━┙
975 mg to g
Round to thousands
log(x)²=(logx)², find the value of x
Answer:
x = 7.39
Step-by-step explanation:
log(x)²=(logx)², find the value of x
log x² = log x * log x
2log x = log x * log x
2 = log x
Take the exponent pf both sides
e² = e^logx
e² = x
x = e²
x = 7.39
Question 7 of 10
Leon graphed y = 18 -0.05x to represent the number of gallons of gas left in
his car after driving x miles,
20 gallons
mod
What is a reasonable domain for this situation?
A. All real numbers
B. X20
CC. -40 SXS 440
DO 5X5360
Answer:
D
Step-by-step explanation:
looking at the graph the values of it X are greater than or equal to 0 but less than or equal to 360
Calculate sales tax using the following information:
Taxable amount of the sale: $125
Sales tax percentage: 6.5%
What is the amount of the sales tax?
Round the answer to the nearest cent (hundredths).
Answer:
8.13
Step-by-step explanation:
125 x .065 = 8.13
Please help!! Urgent!
Answer:
[tex] log_{3}( {x}^{3} + {2x}^{2})[/tex]
Answer:
Answer:
log_{3}( {x}^{3} + {2x}^{2})log
3
(x
3
+2x
2
I desperately need help ILL GIVE BRAINLIEST AND 50 points
is this like Algebra 1 or 2? you can try to use a graph generator to help
The sum of the number is shown 5.25+ (-1.35)
Answer:
3.90
Step-by-step explanation:
5.25-1.35
=3.90
MARK ME BRAINLIEST THANKS MY ANSWER PLEASE
Given f(x)= 3x+2, what is the Inverse Function?
Answer:
Step-by-step explanation:
For this case we must determine the inverse of the following function:
[tex]f(x)=3x-2[/tex]
Step 1:
We would write
[tex]y=f(x)[/tex] or [tex]y=3x-2[/tex]
Step 2:
We clear x:
[tex]y+2=3x[/tex]
[tex]\frac{y+2}{3}=x[/tex]
Step 3:
"x" and "y" are exchanged:
[tex]y=\frac{x+2}{3}[/tex]
The inverse is:
[tex]f^{-1}(x)=\frac{x+2}{3}[/tex]
How might Sarah shoe empathy towards her class mate?
Answer:
I'll need more information to answer this question, but here is how you can show empathy towards classmates:
-talk to new people
-look from the classmate's pov
-be nice, and say things like "I agree" if you agree
-always be there for them
Step-by-step explanation:
Help me help me help me
Answer:
b
Step-by-step explanation:
When x = 1, 5x + 8 = 13.
This eliminates all the options except for b.
oduced the test statistic χ2=8.95 with a corresponding p-value of 0.03. Which of the following is correct? There is sufficient evidence to reject the null hypothesis at the 0.05 level since the test statistic is greater than the p-value. Answer A: There is sufficient evidence to reject the null hypothesis at the 0.05 level since the test statistic is greater than the p -value. A
Answer:
The null hypothesis must be rejected
Step-by-step explanation:
Here the P value is less than 0.05
which means that the test results are statistically significant and there are sufficient evidence to reject the null hypothesis and accept the alternative hypothesis.
Hence, the null hypothesis must be rejected.