Answer:
The standard deviation of the sampling distribution σₓ = 0.013
Step-by-step explanation:
Explanation:-
Mean of the Population μ = 9.70 ounces
Standard deviation of the Population σ = 0.03 ounces
Given size of random sample 'n' =5
The standard deviation of the sampling distribution
σₓ = σ/√n
[tex]S.D = \frac{0.03}{\sqrt{5} } = 0.013[/tex]
y = x - 2
-2x + 3y = -1
What is x and y?
Answer:
(5, 3)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationSolving systems of equations by graphingStep-by-step explanation:
Step 1: Define systems
y = x - 2
-2x + 3y = -1
Step 2: Solve for x
Substitute in y: -2x + 3(x - 2) = -1Distribute 3: -2x + 3x - 6 = -1Combine like terms: x - 6 = -1Isolate x: x = 5Step 3: Solve for y
Define equation: y = x - 2Substitute in x: y = 5 - 2Subtract: y = 315 POINT QUESTION; I REALLY NEED HELP
A dietician gathered data about the amounts of flour, baking powder, and butter used for several different muffin recipes. She used a graphing tool to organize the data in different scatter plots and found the following lines of best fit:
The relationship between the baking powder used, x, and the flour used, y, is modeled by the equation y = 0.13x + 0.92, and the correlation coefficient for the data is 0.953.
The relationship between the baking powder used, x, and the butter used, y, is modeled by the equation y = 0.24x + 0.76, and the correlation coefficient for the data is 0.802.
The relationship between the flour used, x, and the butter used, y, is modeled by the equation y = 0.86x + 0.52, and the correlation coefficient for the data is 0.693. Which line of best fit can the dietician expect to produce the most reliable predictions?
A. the line modeling the baking powder and the butter used
B. the line modeling the baking powder and the flour used
C. the line modeling the flour and the butter used
D. All three lines will give equally reliable predictions.
Answer:
the line modeling the baking powder and the flour used
Step-by-step explanation:
plato master test
On comparing the pairwise R - squared value between the three variables, we find that the line modeling the baking powder and the flour used can be expected to produce the most reliable predictions.
What is R - squared value ?R-Squared value is a quantifiable analysis of how well the line of best fit (linear regression model) fits your data. A value closer to 1 (100%) is usually good.
The coefficient of determination - R - squared value is square of the correlation coefficient.
R - squared value of the relationship between baking powder and flour used = 0.953² = 0.908
R - squared value of the relationship between baking powder and butter used = 0.802² = 0.643
R - squared value of the relationship between flour and butter used = 0.693² = 0.48
Since, on comparing the R - squared values of the three relationships, we find that the R - squared value of the relationship between baking powder and flour used is largest. Thus, line of best fit between baking powder and flour is expected to produce the most reliable predictions.
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Find the coordinates of the point where y-4x=1 crosses the y axis
Answer:
(a) (-1/4,0)
(b) k = (10-c)/2
Step-by-step explanation:
(a) A point passing through the y-axis is the same as finding the y-intercept.
[Move terms to right-hand side; y = mx + b form]
y = 4x + 1
[Find x, when y = 0]
0 = 4x + 1
-1 = 4x
-1/4 = x
At x = -1/4, y = 0 therefore the point: (-1/4,0) crosses the y-axis.
(b) To find the value of k in (k,10), we need to find x. Given y= 10 x=k c=constant
[Find x by plugging in known values]
Using y = 2x + c,
10 = 2k + c
10 - c = 2k
(10-c)/2 = k
Answer:
first one is -1,0
Step-by-step explanation:
i just did it
Please help
Thank you
Answer:
[tex]C)2\sqrt{6}[/tex]
Step-by-step explanation:
[tex]\sqrt{24}\\=\sqrt{2*2*2*3} \\=\sqrt{4*6}\\=2\sqrt{6}[/tex]
Gabby measures out 5 1/2 pounds of almonds at the grocery store bulk section. At the check out total cost came up to $20.90 What is the price per pound?
Answer:
$3.80/pound
Step-by-step explanation:
We can just divide the price by the amount to find the price per pound.
20.90 ÷ 5.5 = 3.80
Hope this helps!
How many kilograms are in 44 pounds
Answer:
19.9581kg
Step-by-step explanation:
Hmm almost equal to 20kg
You spend $30.40 on 4 CDs. Each CD costs the same amount and is on sale for 80% of the original price. a. Write and solve an equation to find how much you spend on each CD. Let p represent the price you pay for each CD. Equation: =30.40 You spent $ on each CD. Question 2 b. The next day, the CDs are no longer one sale. You have $25. Will you be able to buy 3 more CDs? No, you will not be able to buy 3 more CDs. Question 3 c. Explain your reasoning for part (b). Each CD costs $ at the regular price, so 3 CDs would cost $ .
Answer:
$7.6 ;
No, you will not be able to buy 3 more CDs
$9.5
$28.5
Step-by-step explanation:
Given that :
Cost of 4 CDs = $30.40
Cost per CD is equal
Sale price = 80% of original price
Price p per CD:
Cost of 4 CDs / number of CDs
$30.40 / 4
= $7.6
2)
No, you will not be able to buy 3 more CDs
If x = original price
80% of x = 7.6
0.8x = 7.6
x = 7.6 / 0.8
x = $9.5
$9.5 * 3 =$28. 5
Hence, $25 can't buy 3 CDs the next day (28.5 > $25)
Which of the ordered pairs are functions
(Hint: there are more than one?)
15 POINTS
OR BRAINLIST ???
Answer:
c
Step-by-step explanation:
Dan mixed 2 parts of milk and 3 parts of syrup to make a drink. How many parts of milk did Dan mix with each part of syrup? (1 point) Group of answer choices A two over five B two over three C three over five D three over two
Answer:
B
Step-by-step explanation:
2 parts of milk is mixed with 3 parts of syrup
This implies 2/3 parts of milk is mixed with 1 part of syrup.
Solve for x.
x + 47 = -23
x =
Answer:
x = -70
Step-by-step explanation:
x+47=−23
Subtract 47 from both sides.
x+47−47=−23−47
x = −70
Answer:
x=-70
Step-by-step explanation:
x +47= -23
-47 -47
x= -70
the product of d and 4
Answer: 4d
Step-by-step explanation:
Product means multiplication, so the product of d and 4 means d times 4.
I need help pronto please it’s due in 15 minutes
Answer:
yes
Step-by-step explanation:
Answer:
Yes, she is rightYes, she will have $1.65 leftStep-by-step explanation:
2)
"4 friends had a lunch together [...] $33.40"
"They share the bill equality" = 33.40 ÷ 4
Everyone must pay = $8.35
Money left = $10 - $8.35
Money left = $1.65
Find the next term of the given sequence. 1.31, 2.54, 3.77, ...
4.90
5.00
5.10
Answer:
5.00
Step-by-step explanation:
a necklace contains 36 gram of gold 72% of the mass of necklace is gold what is the mass of the necklace
Answer:
50 grams
Step-by-step explanation:
36 grams = 72%
→ Find 1% by dividing both sides by 72
0.5 grams = 1%
→ Times both sides by 100 to find 100%
50 grams = 100%
Step-by-step explanation:
Multiply 32 by 72 to get thw mass.
write as a product: a-b+a^2-B^2
Answer: (a - b)(a + b + 1)
a - b + a² - b²
= (a - b) + (a - b)(a + b)
= (a - b)(a + b + 1)
Step-by-step explanation:
Emma is 10 years old. she asked her father how old he is. her father answered, "when you are my age I will be 70." how old is Emma's father.
Answer:
40
Step-by-step explanation:
Emma age: yE = 10 + x (x is timeline)
Father age: yF = A + x (x is timeline, A is Father age today)
in time x1: Emma will be A years old, and Father will be 70 years old.
yE (x1) = 10 + x1 = A
yF (x1) = A + x1 = 70
System of equations with unknown values: x1 and A.
substract equation 1 - equation 2:
10 - A = A - 70 ⇒ 80 = 2A ⇒ A = 40
So, father is 40 years old now
Emma's father is 40 years old
Let the age of Emma father be y
Age of emma = 10 years
In x years time;
Emma age will be 10 + xFathers age will be y + xIf in x1 years time, Emma will be y years old and his father will be 70 years old
Emma age: yE = 10 + x (x is timeline)
Emma's current age will be 10 + x = yHis father;s current age will be y + x = 70
Solving both equations simultaneously;
10 - y = y - 70
10+70 = y + y
80 = 2y
2y = 80
y = 80/2
y = 40 years
Hence Emma's father is 40 years old
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If u answer all the questions i will give u ez questions with a lot of points
Answer:
honestly I can not see it
Step-by-step explanation:
Geometry question plz help me ?
(its part b to question 9 ) If there are 15 students who don't wear glasses how many students are there in class? PLZ HELP WILL GIVE BRANLIST
Answer:
there are 25 students in the class and 15 who wear glasses.
Answer:
spaciously 09773616266
slope is 2 and (−1, 6) is on the line; point-slope form
Answer:
y-6=2(x-(-1))
Or simplified:
y-6=2(x+1)
Step-by-step explanation:
use the formula: y-y1=m(x-x1)
PLS PLS PLS ANSWER ASAP FOR BRAINLIEST
There are 4 cookies and 12 cupcakes leftover at a bake sale. What is the ratio of cookies to cupcake? Your answer must be in simplest form.
PLS ANSWER ASAP
Answer:
1:3
Step-by-step explanation:
4/12 simplified is 1/3
for every one cookie leftover, there are 3 cupcakes leftover
xoxo, your highness...A salesman receives a weekly salary of $150. He
also receives $4 for each tire he sells. One week, he
earned $330. How many tires did he sell that week?
Answer:
150 + 4x = 330
4x = 180
x = 45
Step-by-step explanation:
Find the quadratic equation 3 and-5
Answer:
x^2 + 2x - 15 = 0.
Step-by-step explanation:
If you mean the equation with zeroes of 3 and -5 it is:
(x - 3)(x + 5) = 0
x^2 + 2x - 15 = 0.
Julie is about to ride a straight water slide. The length of the water slide itself is 20 meters. The splash pool at the end of the slide is 16 meters away from the base of the tower that leads up to the launching platform. How high is the launching platform?
Answer:
The launching platform height is 12 meters.
Step-by-step explanation:
Which subsets does 65/13 belong? Move the appropriate subsets into this box.
Tarin received a raise of $80 per week. If he was making $500 per week before the raise, what was the percent change in his earnings?
Increase or decrease? increase
amount of change = 80
original amount = 500
percent
Final result =
16%
Step-by-step explanation:
500/100 = 1% = 5
80 / 5 = 16
In ΔUVW, u = 44 inches, ∠W=56° and ∠U=117°. Find the length of v, to the nearest inch.
Answer:
The length of v is 6 inches
Step-by-step explanation:
Here, we want to calculate the length of v to the nearest inch
The best way to go about this is to use the sine rule
But before we proceed, we need the measure of angle V
Mathematically, since we have a triangle
W + U + V = 180
This is the sum of angles in a triangle
56 + 117 + V = 180
V = 180-56-117
V = 7 degrees
so we proceed to use sine rule to get the length of v
Mathematically;
v/Sin V = u/Sin U
Thus;
v/sin 7 = 44/sin 117
v = 44sin 7/sin 117
v = 6.018
This is approximately 6 inches
Answer:
6
Step-by-step explanation:
Three more than a number times six is fifteen
Answer:
3 + 2=5
5 x 6 = 15?
Step-by-step explanation:
HELP FAST PLZ
Cha deposits $200 into an account that pays simple interest at a rate of 6% per year. Huch interest will he be paid in
the 3 years
Answer:
$236 in 3 years
Step-by-step explanation:
Find the circumference and the area of a circle with radius 7ft .
Use the value 3.14 for pi, and do not round your answers. Be sure to include the correct units in your answers.
Answer:
C=43.96 ft.
A=153.86 ft.^2
Step-by-step explanation:
for circumference, use C=2πr
for area, use A=π[tex]r^{2}[/tex]
The circumference and the area of a circle with radius 7 feet are 43.96 feet and 153.86 square feet, respectively.
What is a circle?A circle is a closed, two-dimensional object where every point in the plane is equally spaced from a central point. The line of reflection symmetry is formed by all lines that traverse the circle.
And the general formula of the circle,
(x – h)²+ (y - k)² = r²,
where (h, k) is the center and r is the radius of the circle.
Given:
A circle with radius 7 feet.
Then the circumference of the circle,
= 2πr
= 2(3.14)(7)
= 43.96 feet.
The area of the circle,
= πr²
= (3.14) (49)
= 153.86 square feet.
Therefore, circumference is 43.96 feet and area is 153.86 square feet.
To learn more about the circle;
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