Answer:
0.83
Step-by-step explanation:
(a) z = (x - mean) / sd = (4000 - 3750) / 300 = 0.83
This corresponds to 0.7967 from the z-table, which represents how many last less than 4000 hours, so the answer is 1 - 0.7967 = 0.2033
(b) It will be P(x<4000) - P(x>3600) = 0.7967 - whatever the corresponding value is.
(c) same procedure as (b).
(d) 2% above corresponds to 0.02 which is a z-score of -2.05
-2.05 = (x - 3750) / 300
x = 3135
a chef bought 6 5/9 pounds of carrots
I need help with Algebra 2. Thank you! :)
Answer:
B: 6.0
Step-by-step explanation:
-3t^2+9t+54 = 0
This is the equation that needs to be solved
Divide both sides by -3
t^2 - 3t - 18 = 0
The factors of 18 are: (1 18) (2 9) (3 6)
3 - 6 = -3 and 3 x -6 = -18
So: (t + 3) (t - 6) = 0
t = -3, 6
It can't be negative so the answer is 6
simplify [tex]\sqrt{p^4q^6r^5. answer is D just took the test
The perimeter of the shape below is 44 feet. What is the area in square feet?
Answer:
2(4x+2+6x)=44
10x+2=22
10x=20
x=2
area= 10*12=120sq feet
Step-by-step explanation:
Find the volume of the cylinder.
Either enter an exact answer in terms of or use 3.14 for pi
Answer:
Answer in explanation
Step-by-step explanation:
Volume of cylinder =
[tex]\pi {r}^{2} h \\ = (3.14)(4) {}^{2}(8) \\ = 401.92units {}^{3} \: or \: 128\pi \: units^{3} [/tex]
Answer:
Step-by-step explanation:
Radius r = 4
Height h = 8
Volume = πr²h = 128π units³
Hellllp!
Ahmed needs to cover a box that is 6 cm long, 4 cm high and 4 cm wide with
material on all sides. How much material does he need?
Will mark as brainlist
Thaaaaaanks
Answer:
he needs 128cm² materials
Step-by-step explanation:
surface area of cuboid =2(lb+bh+lh)
=2(6×4+4×4+6×4)=128cm²
Help me out please!!!!!!!!
Answer:
its d
Step-by-step explanation:
it so easy it say it on the chart
20 baseballs pitched he hit 17. What %did TJ hit
I NEED HELP QUICK!!!
Answer: 12cm
Step-by-step explanation:
top earning app/game of usa
Answer:
Pokemon Go
Step-by-step explanation:
¿? :v :v :v
¿? :v :v :v
PLEASE LOOK AT THE IMAGE BELOW! (I MARK BRAINLIEST!)
Answer:
- 7 < - 5
Step-by-step explanation:
Because negative 7 is technically lower than negative 5. Due to them being negative the more closer you are to -1 the more higher of a number it is. I don't know how to explain it but I hope that it makes sense!
Have a wonderful day! <33
The following is the estimation results for a multiple linear regression model:
Y = B. + ,X,+B,X, +E
SUMMARY OUTPUT
Regression Statistics
R-Square 0.558
Regression Standard Error (S) 863.100
Observations 35
Coeff StdError t-stat
Intercept 1283.000 352.000 3.65
X1 25.228 8.631
X2 0.861 0.372
Questions:
1. Write the fitted regression equation (30 points).
2. Write the estimated intercepts and slopes, associated with their corresponding standard errors (30 points).
3. Interpret each coefficient (40 points).
Answer:
Kindly check explanation
Step-by-step explanation:
Given the summary output :
_______ Coeff___ StdError__ t-stat
Intercept 1283.000_ 352.000 _ 3.65
X1 _____ 25.228 ____8.631
X2 _____0.861 _____0.372
General form of a multiple regression model:
Y = B1X1+B2X2 +E
The fitted regression equation is :
y = 25.228X1 + 0.861X2 + 1283
Intercept and slope corresponding to the standard error :
Intercept = 352
Slope 1 = 8.61 ; slope 2 = 0.372
'B' coefficient represents the change in the mean response, Y, per unit increase in a version predictor variable when all the other predictors are held constant.
B1 represents the change in the mean response, U, per unit increase in x1 when x2, x3, ..., xk are held constant
B2 represents the change in the mean response, U, per unit increase in x2 when x1, x3, ..., xk are held constant
help please i will award brainliest
Answer:
D 826.80
Step-by-step explanation:
Answer:
$780.00
Step-by-step explanation:
just add 420+360= $780.00
Brenda and her three friends ate dinner at Applebee’s. Their total bill was $24.36 which they spent equally. How much does each person pay?
plz explain how you got your answer
Answer:
8.12
Step-by-step explanation:
determine whether the equation is exponential growth or exponential decay
1a. y = 2(11/5)^-x
2b. y= e^-2x
3c. y= 1/4e^x
9514 1404 393
Answer:
decaydecaygrowthStep-by-step explanation:
If the base of a positive exponential is greater than 1, the function is a growth function. If it is less than 1, the function decays.
Remember that a^-1 = 1/a, so a negative exponential can be transformed to a positive one.
__
1. y = 2(11/5)^-x = 2(5/11)^x . . . . 5/11 < 1, so decay
2. y = e^(-2x) = (1/e^2)^x . . . . 1/e^2 < 1, so decay
3. y = 1/4e^x . . . . e > 1, so growth
_____
e ≈ 2.71828 . . . an irrational number
Lisa is saving money to buy a game. The game costs $36, and so far she has saved three-fourths of this cost. How much money has Lisa saved?
PLEASE SAY A,B,C OR D OF THE RIGHT ANSWER ONLY PLEASE! no links or flies, x .
Javier read 712 of a book on Saturday, and 412 of the same book on Sunday. Which equation shows the fraction of the book that Javier read over the weekend?
A. 7/12 + 4/12 = 11/12
B. 7/12 – 4/12 = 3/0
C. 7/12 + 4/12 = 11/24
D. 7/12 – 4/12 = 3/12
Answer:
it should be C if not I'm so so sry
Where are my smart friends?? I had $370.00. My Mom gave $150.00. My Dad gave $150.00. My Aunt and Uncle gave me $100.00. I had another $30.00. How much did I have?
Answer:
im ur smart friend
Step-by-step explanation:
370.00 plus 150.00 equals to 520.00
520.00 plus another 150.00 equals to 670.00
670.00 plus 100.00 equals to 770.00
770.00 plus 30.00 equals to $800.00 total
Answer: $800 total
Answer: it says had so its $400
Step-by-step explanation:
Its 370+30=400
easiest way to make a ratio into percentage
Answer:
To convert a ratio into the form of a percentage
Answer:
Simply divide m by n and then multiply the result by 100.Example: 12 : 4 = 300%can someone help me please
Answer:
Step-by-step explanation:
Answer:
The correct answer is B. $6.50 per pound.
On a math test, students
earn 4 points for each correct answer and lose 1 point
for each incorrect answer. If there are 50 questions on
the test, a student's score is shown by the expression
4(50 - w) - w, where w is the number of wrong
answers. Chris says that the expression 5(40 - w) could
also be used. Is he correct? Why or why not? Show your work.
The price of XYZ stock fluctuates widely. In January it closed at $3.50 but In February it Closed at $2.25. However at the end of March it shot back up to $5.00.
What was the average monthy change in the price of XYZ stock from january through march?
Answer:
$3.583
Step-by-step explanation:
Given the monthly stock prices :
January = $3.50
February = $2.25
March = $5.00
The average monthly change in price of XYZ stock from. JANUARY through MARCH is;
(January + February + March) / 3
Average monthly change :
(3.50 + 2.25 + 5.00) / 3
$10.75 / 3
= $3.583
What is the height of a rectangle with a perimeter of 152.8 mm and base
length of 72.2 mm?
Which angle is congruent to B
How many 6-digit numbers are there in our system of counting numbers?
there are 900,000 6 in all
brainliest or a thank you please <33 :)
A student usually saves $20 a month. He would like to reach a goal of saving $350 in 12 months. The student writes the equation
350 = 12(x + 20) to represent this situation. Solve the equation for x.
• Show your work or explain your answer.
Write your answer as a sentence that describes what the variable x represents.
Answer:
Step-by-step explanation:
350=12(x+20)
(divide both sides by 12)
29.1667=x+20
(subtract 20 from both sides)
x=9.16667
X (9.17) is the additional amount of money the student must save each month in order to reach his goal.
what is 15% of 22 help
Hi please help me with this asap.
Use differentials to estimate the amount of material in a closed cylindrical can that is 60 cm high and 24 cm in diameter if the metal in the top and bottom is 0.1 cm thick, and the metal in the sides is 0.05 cm thick. Note, you are approximating the volume of metal which makes up the can (i.e. melt the can into a blob and measure its volume), not the volume it encloses. The differential for the volume is
Answer:
dV ≈ 927.4 cm³
Step-by-step explanation:
Formula for volume of a cylinder is;
V = πr²h
Using differentials, we have;
dV = (dV/dr)dr + (dV/dh)dh
Now, dV/dr = 2πrh
dV/dh = πr²
Thus, at r = 24/2 = 12 cm
And at h = 60 cm, we have;
dV/dr = 2π(12 × 60)
dV/dr = 4523.89 cm²
Also;
dV/dh = π(12)²
dV/dh = 452.39 cm²
the metal in the top and bottom is 0.1 cm thick. Thus, dr = 2 × 0.1 = 0.2
the metal in the sides is 0.05 cm thick. Thus; dh = 0.05
Thus;
dV = (4523.89 × 0.2) + (452.39 × 0.05)
dV ≈ 927.4 cm³
Right triangle ABC is shown.
Which equation can be used to solve for c?
Answer:
[tex]\sin(50^\circ)=3/c[/tex]
Step-by-step explanation:
Remember SOH/CAH/TOA. We will use SOH, which means [tex]\sin[/tex] of the angle is equal to the opposite side over the hypotenuse.