Answer:
Correct option: b 39.
Step-by-step explanation:
A one-sample (or one mean) t-test is applied to test whether the population-parameter is significantly different from some hypothetical value.
The degrees of freedom of the t-test is:
df = n - 1
It is provided that the sample size is, n = 40.
Compute the degrees of freedom as follows:
df = n - 1
= 40 - 1
= 39
Thus, the correct option is b.
Find an expression which represents the difference when (2 + 4y) is subtracted
from ( 8x + 3y) in simplest terms.
Answer:
Simplifying 6x * 3y * 9x2y4 Reorder the terms for easier multiplication: 6 * 3 * 9x * y * x2y4 ... When you enter an expression into the calculator, the calculator will simplify the ... For addition and subtraction, use the standard + and - symbols respectively.
Step-by-step explanation:
In ΔHIJ, i = 53 cm, ∠I=120° and ∠J=30°. Find the length of j, to the nearest 10th of a centimeter.
Answer:
30.6
Step-by-step explanation:
The sine rule of trigonometry helps us to equate the side of the triangles to the angles of the triangles. The length of the side j is 30.6 cm.
What is Sine rule?The sine rule of trigonometry helps us to equate the side of the triangles to the angles of the triangles. It is given by the formula,
[tex]\dfrac{Sin\ A}{\alpha} =\dfrac{Sin\ A}{\beta} =\dfrac{Sin\ A}{\gamma}[/tex]
where Sin A is the angle and α is the length of the side of the triangle opposite to angle A,
Sin B is the angle and β is the length of the side of the triangle opposite to angle B,
Sin C is the angle and γ is the length of the side of the triangle opposite to angle C.
Given the length of i is 53 cm, while the measure of the ∠I is 120°. Also, the measure of ∠J is 30°. Therefore, the length of the side j is,
[tex]\dfrac{Sin\ A}{\alpha} =\dfrac{Sin\ A}{\beta} =\dfrac{Sin\ A}{\gamma}\\\\\dfrac{Sin\ I}{i} =\dfrac{Sin\ J}{j} \\\\\dfrac{Sin\ 120^o}{53} =\dfrac{Sin\ 30^o}{j} \\\\j = \dfrac{Sin\ 30^o \times 53}{Sin\ 120^o}\\\\j = 30.5995 \approx 30.6\rm\ cm[/tex]
Hence, the length of the side j is 30.6 cm.
Learn more about Sine Rule:
https://brainly.com/question/17289163
#SPJ2
PLEASE PLEASE PLEASE HRLP ME Write the equation of a line in slope intercept form that has a slope of 2/9 and has a Y intercept of 2
Answer:
y=2/9x+2
Step-by-step explanation:
Answer:
y = [tex]\frac{2}{9}[/tex] x + 2
Step-by-step explanation:
Slope intersept form is y = mx +b
Y-intersept (b) is 2
Slope (m) is [tex]\frac{2}{9}[/tex]
Plug the slope(m) and Y-intersept (b) into y = mx +b : y = [tex]\frac{2}{9}[/tex] x + 2
4. The value of a copy machine is $8500 when it is purchased. After two years its value is $7475. What is its value after 8 years?
Answer:
3375 is the answer.
Step-by-step explanation: 8500- 1025=7475
so 1025 is every to years so we need to subtract 7475-1025-1025-1025-1025 so each 1025 is 2 yrs.
I hope this works :)
what you can multiple and get 11
Answer:
11 x 1 = 11
hope this helped
Brainliest please <3
Answer:
11*1
Step-by-step explanation:
I'm sorry that's all I can think of.
what is p minus 6? i cant find the answer
Answer:
What does P stand for
Step-by-step explanation:
It should say
Answer:
p - 6
is just 5 i think
Step-by-step explanation:
if this helps please mark brainlist
Find the equation of the tangent line. y=(9-x^2)^1/3 at (1,2)
Get the derivative:
y = (9 - x²)¹ʹ³
dy/dx = 1/3 (9 - x²)⁻²ʹ³ d/dx [9 - x²]
dy/dx = 1/3 (9 - x²)⁻²ʹ³ (-2x)
dy/dx = -2/3 x (9 - x²)⁻²ʹ³
Evaluate it at x = 1 :
dy/dx (1) = -2/3 • 8⁻²ʹ³
Since 8 = 2³, we have
8⁻²ʹ³ = 1 / 8²ʹ³ = 1 / (2³)²ʹ³ = 1 / 2² = 1/4
Then the tangent line has equation
y - 2 = 1/4 (x - 1) → y = 1/4 x + 7/4
Angle A and angle B are complementary. m Angle A = 54 and M angle B = 2x+2. What is the m angle B
Answer:
m=17
Step-by-step explanation:
Complementary means they add to equal 90 degrees.
1) 90-A=36
2)36=2x+2
3) Subtract 2 from both sides, 34=2x
4) Divide by 2 17=x
what is 56+32 distributive property to factor out the greatest common factor.
What is the length of segment AC?
Answer:
It is 10 Units
Step-by-step explanation:
Mark me brainliest please :)
also this is EDG 2020
Answer:
10 units
Step-by-step explanation:
In the given figure, we may plot a point B with the coordinate pair (-5,-1).
Lets now draw a triangle ABC by connecting A and C with B perpendicularly.
We now know that,
AB = 5+3 = 8 units
CB=1+5= 6 units
[tex]As\ the\ drawn\ triangle\ is\ a\ right\ triangle, \ as\ angle\ CBA\ is\ 90\ degrees.\\Through\ Pythagoras\ Property,\ we\ may\ conclude\ that\ :\\ AB^{2} + BC^2 = CA ^2\\Hence, \\8^2+6^2=AC^2\\64+36=AC^2\\100=AC^2\\AC=10[/tex]
PLZ HELP!!! Will mark BRAINLIEST 41. In isosceles AABC, C is the vertex angle. If A = 3x - 6 and C = 2x, find the measure of B explain
a. 24
c. 48
b. 46
d. 66
Answer:
sorrry if wrong i thinks its A
Step-by-step explanation:
sorry i cant explain i can only help with first half
what is the product of 22 and 8
Answer:
22 times 8 is equal to 176
Step-by-step explanation:
what is the sum of the first 30 multiplies of 3?
A.1200
B.1395
C.1500
D.1490
Answer:
Letter D. 1490
I hope you helped☜☆☞Laura participated in a gymnastics competition. She got scores of 7.88, 9.42,
7.49 and 8.64. What is her total score?
Chloe prepared 28 kilograms of dough after working 7 hours. How much dough did Chloe prepare if she worked for 8 hours? Assume the relationship is directly proportional.
Answer:
Chloe prepared 32 kilograms if she worked for 8 hours.
Step-by-step explanation:
28 ÷ 7 = 4
4 kilograms per hour worked
4 × 8 = 32
Answer:
32 kilograms
Step-by-step explanation:
The proportion of kilograms of dough to the number of hours worked is [tex]\frac{28}{7}[/tex] which equals to 4 kilograms / hour.
You multiply 4 kilograms/hour by the number of hours she worked which is 8 hours so 4 kg/hour (8 hours) = 32 kilograms.
A residential property is assessed for tax purposes at 40% of its market value. The residential property tax rate is 3 1/2% of the assessed value and the tax is 1649$.
(a) What is the assessed value of the property?
(b) What is the market value of the property?
Answer:
9
Step-by-step explanation:
ya i bthink 9
Answer:
um it like is 10 instead
Step-by-step explanation:
im sorry if this is wrong, imma lol slow:)
Can someone please help me QUICK‼️
Answer:
C and D
Step-by-step explanation:
Use a calculator for the sq rt
A function is negative over the intervals
{x 1-0
What are the zeros for the function?
3
-3,3
-3
Answer:
-3 and 3
Step-by-step explanation:
Point M lies on the line segment connecting L(-4, 2) and N (2,-4). If M partitions the segment in the ratio 1:2, what are the coordinates of M?
if trey sells 10 more candy bars , how much will he raise for his basketball team ?
Answer:
Step-by-step explanation:
how many did he sell in the first place
HELP PLEASE!! 100 POINTS!!
What is the number of terms in this expression?
m/5+4⋅6
Answer:
m/5 is one term and it is separated by 4*6 by add sign there are two terms
Step-by-step explanation:
hope this helps.
Answer:
There are 3 terms
Step-by-step explanation:
m/5 is 1 term
4 is 1 term
6 is 1 term
S_pyt14
s n a p
a d d m e
Answer:
and das on periodt
Step-by-step explanation:
P E R I O D T B O O
3/8 + 7 1/2 =?
In simplest form
Answer:
63/8
Step-by-step explanation:
3/8+ 7 1/2 = 3/8+ 15/2= 3/8+60/8= 63/8
Answer: I think it’s 7 5/8 I’m not sure
Step-by-step explanation:
23.5 + - (-62.74) =
Answer:
-39.24
Step-by-step explanation:
mark me brainliest plz
Answer:
86.24
Step-by-step explanation:
23.5 + - (-62.74) =
Distribute the negative with (-62.74)
23.5+62.74
Add
86.24
Jenna has a piece of paper that is 99 3/4 square inch in Area.
It is 10 1/2 inches long.
What is the width of the piece of paper in inches?
Answer:
Width is 9 1/2 in.
Step-by-step explanation:
My reasoning is that, since youve gotten the area (99 3/4), your asked to find the width. You have the length which is 10 1/2. In this situation youre expected to divide. What you divide is 99 3/4 by 10 1/2. If you calculate this, you get a quotient of 9 1/2. I’m not very ethical at explanations, but I hope you found it helpful somehow.
The two lines represent the amount of water, over time, in two tanks that are the same size. Which container is filling more quickly? EXPLAIN.
Answer:
A
Step-by-step explanation:
This is because line B has less water than A within the same time period. For example, lets say that each container had to be filled within 5 minutes. Container A would already be filled up within that time. Line B would be trailing behind a little.
Answer:
A
Step-by-step explanation:
because if we see from the graph:
let's say they are powered by x minutes
Thus A is filled while B is only a half
so container A is filling more quickly
I hope this helps you :)
A punter kicks a football into the air. The pathway of the football can be represented by the equation h=-16t^2+82t (where t= time in seconds and h= height in feet.) what was the maximum height of the ball and what time was the maximum height reached?
Answer:64
Step-by-step explanation:
Answer:
2fiftguvvbbhb to the following ad listing has ended on the same to ensure everyone I r
The equation F= 9/5C +32 relates temperature measured in degrees Celsius. C, to degrees Fahrenheit, F. Determine whether there is a proportional relationship between C and F.
Given:
The equation is
[tex]F=\dfrac{9}{5}C+32[/tex]
To find:
Whether there is a proportional relationship between C and F.
Solution:
If there is a proportional relationship between C and F, then the line of given equation passes through (0,0) and the equation must be true for (0,0).
Put F=0 and C=0 in the given equation.
[tex]0=\dfrac{9}{5}(0)+32[/tex]
[tex]0=0+32[/tex]
[tex]0=32[/tex]
This statement is not true because [tex]0\neq 32[/tex].
It means the line of given equation does not passes through (0,0). So, it s not a proportional relationship.
Hence, there is not a proportional relationship between C and F.
Answer:
korrect
Step-by-step explanation:
it looks right
What is the solution to this equation?
3x-9 = 12
O A. x = 1
B. x = 7
O c. x = 9
O D. x = 63
can someone help please!?
Answer:
Sure ill help i need the question tho not a picture
Step-by-step explanation: