Answer:
3.83
Step-by-step explanation:
Mean of x = Σx / n
Mean of x = (14 + 19 + 13 + 6 + 9) / 5 = 12.2
Sum of square (SS) :
(14-12.2)^2 + (19-12.2)^2 + (13-12.2)^2 + (6-12.2)^2 + (9-12.2)^2 = 98.8
Mean of y = Σy / n
Mean of y = (101 + 89 + 48 + 21 + 47) / 5 = 61.2
Σ(y - ybar)² = (101-61.2)^2 + (89-61.2)^2 + (48-61.2)^2 + (21-61.2)^2 + (47-61.2)^2 = 4348.8
df = n - 2 = 5 - 2 = 3
Σ(y - ybar)² / df = 4348.8 / 3 = 1449.6
√(Σ(y - ybar)² / df) = √1449.6 = 38.074
Standard Error = √(Σ(y - ybar)² / df) / √SS
Standard Error = 38.074 / √98.8
Standard Error = 3.83
tina solved a quadratic equation and found the solution to be -3/2 and 6 which of the following is equivalent to the quadratic equations that tina solved
Answer:
[tex]x^2-\dfrac{9}{2}x-9=0[/tex]
Step-by-step explanation:
The solutions of a quadratic equation are :
x = -3/2 and x = 6
or we can write it as :
[tex]x+\dfrac{3}{2}=0\ and\ x-6=0\\\\(x+\dfrac{3}{2})(x-6)=0[/tex]
Multiplying both values,
[tex](x+\dfrac{3}{2})(x-6)=0\\\\x^2-6x+\dfrac{3}{2}x-9=0\\\\x^2-\dfrac{9}{2}x-9=0[/tex]
Hence, the required quadratic equation is [tex]x^2-\dfrac{9}{2}x-9=0[/tex].
Marley loves to draw and color. She bought 6 boxes of crayons. There are 8 crayons in each box. What is the total number of crayons Marley bought? What operation did you use to find your answer? Be sure to write your answer in a complete sentence.
Answer:
48 crayons
Step-by-step explanation:
There are 6 boxes total, each with 8 crayons in them. Notice that if you would count all the crayons, you would add 8 to the total number of crayons each time you counted a box. There are 6 boxes, so that would be equivalent to adding 8 a total of six times. You would use multiplication: 6 x 8 which is 48.
Answer:
marley has 48 crayons he bought
step by step equation:
6 times 8 =48
you use multiplication to answer this question
Similar Triangles
A cell phone tower in a field casts a shadow of 100ft. At the same time, a 4 ft 6 in post near the tower casts a shadow of 3 ft 4 in. Find the height of the tower in feet. (Hint: make a drawing)
a. 145 ft
b. 76 ft
c. 100 ft
d. 135 ft
Please select the best answer from the choices provided
Answer:
D. 135 ft
Step-by-step explanation:
I calculated it logically
ANSWER THIS ASAP NO FILE AT ATT!!
The answer would be A
Answer:
It would be A
Step-by-step explanation:
Once again the shape does not rotate or flip it stays the same but moves on the coordinate plane.
To survey clients at a massage-therapy spa, a researcher alphabetically lists all of the customers the spa had last month. The researcher sends a survey to the 13th person on the list (with the number 13 being randomly chosen), then surveys every 20th customer after that. Which sampling method was used?
cluster sampling
simple random sampling
stratified random sampling
systematic random sampling
Answer:
Systematic Random Sampling
Step-by-step explanation:
Edge 2021
Answer:
Systematic Random Sampling
Step-by-step explanation:
Took the test.
Does anyone know the answer to this?
Answer:
0.4032
Step-by-step explanation:
1. We assume, that the number 72 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 72 is 100%, so we can write it down as 72=100%.
4. We know, that x is 0.56% of the output value, so we can write it down as x=0.56%.
5. Now we have two simple equations:
1) 72=100%
2) x=0.56%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
72/x=100%/0.56%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
Answer:
no
Step-by-step explanation:
your a fattie
Add the following and simplify if possible.
Answer:
2x+3
Step-by-step explanation:
pls what is 15=2d-0.5?
Answer:
d=7.75
Have a good day:>
find the value of x 3,9,10,8,7,x the mean is 7
#2Need help ???!!! For an exam. Please don’t send any links !!! Cannot open. Thank you and answer below please and thank!
A recipe for pancakes requires 3/4 cup of oil. If Mr. Darcy wants to triple the recipe, how much oil will he need?
Simplify the expression, sin2x + sinx + cos2x - 1
Answer:
2sinxcosx + sinx +1-2sin²x-1
2sinxcosx+sinx-2sin²x
sinx (2cosx+1-2sinx)
7,8+ 65 — 4
the expression has a degree of degree of ..
calculate the surface area of the net
[tex]\red {incomplete \: question}[/tex]
Please help due in 45 minutes!!
Answer:
D
Step-by-step explanation:
I dont understand this but it is my lucky guess
A bike shop in Belleville bought a mountain bike for $723 and marked it up 50% from the original cost. Later on, Andy purchased the mountain bike and paid Belleville sales tax of 14%. How much, including tax, did he pay for the mountain bike?
Answer:
1,236.33
Step-by-step explanation:
Answer:1,236.33
Step-by-step explanation:
i solved using brainly but i need to show my work what are the steps in solving please
Answer:
Step-by-step explanation:
to find the inverse first switch the x and y
y=log(x+3) inverse is x=log(y+3)
then change to exponential form to solve
[tex]log_{a} b=c[/tex] turns to[tex]a^{c}=b[/tex]
a is 10
b is y+3
c is x
[tex]10^{x} =y+3[/tex] subtract 3 from both sides
[tex]10^{x} -3=y[/tex]
Knowing that P = X x i / 100, C = main, e = Rate. Calculate the rate for the formula: A principal of R $ 105,000.00 obtained a percentage of R $ 35,000.00. What is the rate applied?
Answer:
Interest expressed as a percent of the principal will be referred to as an ... earned on an investment of P at the annual interest rate r for a period of t ... (c) monthly, (d) weekly, (e) daily, and (f) continuously at a nominal annual ... and substitute x = 3−2y in for x in second equation and find 4y−3(3−2y) = 1.
Step-by-step explanation: sorry if that doesn't help :(
How much it is 16.8 ÷ 0.2 =
Answer:
84
Step-by-step explanation:
Answer:
84
Step-by-step explanation:
16.8 would be multiplied by 5 since 0.2 is 1/5 of 1, therefore it would like
16.8 times 5 = 84
Use the simple interest formula i= prt. What is the value of i, if p=$6000, r=5%, and t= 3 years
Answer: $6,945.75
6000(1+.05)^3
How would you graph this function?
[tex]y=-2x^2-16x-30[/tex]
Answers Attached
__________________________________________________________
Is the 645 the highest score in the 2018 3rd grade state test
Answer:
I think it is 655.
Step-by-step explanation:
PLS, NO LINKS, AND NO FILES PLS. A paint can has a diameter of 17 centimeters and a height of 24 centimeters. How many cubic centimeters of paint will fill the can? 7,686.72 cm 3 21,779.04 cm 3 5,444.76 cm 3 1,281.12 cm 3
The volume of the paint tank will be equal to 544.752 cubic cm.
What is volume?Volume is defined as the space occupied by any object in the three-Dimensions. All three parameters are required for the volume like length, width and height of the cube.
The given data is:-
Paint can have a diameter of 17 centimetres and a height of 24 centimetres.The volume of the tank will be:-
V = ( π / 4 ) d² l
V = ( π / 4 ) ( 17 x 17 ) 24
V = 5447.52 cubic cm
To know more about Volume follow
https://brainly.com/question/1972490
#SPJ2
please help ASAP ! ! !
WHATS THE ANSWER?? ANSWER ASAP
Andre sets up a rain gauge to measure rainfall in his backyard. On Tuesday, it rains off and on all day, use the graph to determine how much total rain fell on Tuesday
The total amount of rainfall is an illustration of the sum operator
The total amount of rainfall that fell on Tuesday is 35 mm
How to determine the total amount of rainfall?From the graph (see attachment), we have the following function values
f(10) = 2
f(11) = 3
f(12) = 2
f(1) = 4
f(2) = 6
f(3) = 8
f(4) = 10
f(5) = 0
Add up the function values to determine thet total amount of rainfall
Total = 2 + 3 +2 + 4 + 6 + 8 + 10 + 0
Evaluate the sum
Total = 35
Hence, the total amount of rainfall that fell on Tuesday is 35 mm
Read more about graphs at:
https://brainly.com/question/4025726
Please help <3
Don’t guess
Answer:
median
Step-by-step explanation:
answer is the best measure of center for this dot plot is a median
answer options d
does anyone need help on anything
Answer:
yus can you answer this for me
Step-by-step explanation:
What is the circumference of a circle with a diameter of 58 centimeters?
Step-by-step explanation:
by using the formula of circumference with diameter pie ×diameter
Solve algebraically:
1. e^-3x=2
2. ln(3x-5)=ln11+ln2
3.logof4(x-1)+logof4(x+2)=1
4.8^x=4^x-3
Answer:
Step-by-step explanation:
1) 2e^3
2) x = 9
3) ln (16f^2o^2)
4) No solution