Answer:
its the first one and the last one ..that's the answer.
Zoe practices the piano 812 minutes in 4 weeks. At what rate did she practice, in minutes per day
Answer:
Step-by-step explanation
Given
Zoe practices the piano 812 minutes in 4 weeks
4 weeks=7×4
=28 days
she practice, in minutes per day=812/28
=29 minutes
So she practices 29 minutes per day
You are conducting a left-tailed test of a claim about a population mean when sigma is unknown with a sample size of 7.
If
α
=
.005
, find the critical value, to two decimal places.
========================================================
Explanation:
You'll need to use a T table to answer this question. Your stats textbook should have such a table in the back appendix section.
If your textbook doesn't have the proper table, or you don't have your textbook with you, then I recommend searching online for "t table" and you should have tons of free options to choose from.
In the table you'll look for the degrees of freedom row 6, since the degrees of freedom are equal to n-1. In this case, n = 7.
In this row, locate the column labeled "alpha = 0.005" and you'll be looking at "one tail". The value in this row and column is roughly 3.707
Since we're doing a left tailed test and we want P(t < C) = 0.005, where C is the critical value we're after. This must mean C < 0. So C = -3.707 approximately. Round this to two decimal places and we end up with -3.71
-1.1x + 8.1x + 38 = -32
X = -10
Explanation:
-1.1x + 8.1x + 38 = -32
Combine like terms : -1.1x + 8.1x
7x + 38 = -32
Subtract 38
7x = -70
Divide by 7
7x = -70/7
Answer:
x = -10
Answer:
x= -10
Step-by-step explanation:
1. start by subtracting 38 from both sides
-1.1x+8.1x+ (38-38)= (-38-32)
2. Solve
-1.1x+8.1x= -70
3. Add the x- values
7x=-70
4. Solve
x= -10
Rhombus ABCD ~Rhombus EFGH. The scale factor is 3. Angle A = 80° , Angle B = 70° Angle C = 110°, and Angle D = 100°.What are the measures of Angle E, Angle F, Angle G, and Angle H Group of answer choices
Answer:
d 100
Step-by-step explanation:
Based on the pattern in the table, what is the value of a?
Powers of 2
Value
2 Superscript negative 1
One-half
2 Superscript negative 2
One-fourth
2 Superscript negative 3
one-eighth
2 Superscript negative 4
StartFraction 1 Over 16 EndFraction
2 Superscript negative 5
StartFraction 1 Over 32 EndFraction
2 Superscript negative 6
a
Negative 64
Negative 12
StartFraction 1 Over 16 EndFraction
StartFraction 1 Over 64 EndFraction
Answer:1/64
Step-by-step explanation: I got it right
Based on the pattern in the table, the value of a is StartFraction 1 Over 64 EndFraction.
What are Exponents?Exponents are the method of writing numbers, especially large numbers, in terms of a base and an exponent, which is written as the power of base.
Given is a pattern, which is the powers of 2.
The first term is 2⁻¹ = 1/2
The second term is 2⁻² = 1/ 2² = 1/4
The third term is 2⁻³ = 1 / 2³ = 1/8
The fourth term is 2⁻⁴ = 1 / 2⁴ = 1/16
The fifth term is 2⁻⁵ = 1/ 2⁵ = 1/32
The sixth term is 2⁻⁶ = 1/ 2⁶ = 1/64
So the value of a is 1/64.
Hence the value of a is 1/64.
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Which expression is equivalent to (m8n4)4?
Answer:
[tex]\frac{m2}{n}[/tex]
Step-by-step explanation:
Answer:
Step-by-step expla The answer is M2N
What is the first step in solving for z in the equation
5z−4=26?
Answer:
Step-by-step explanation:
This is the completed answer.
5z - 4 = 26
5z−4+4=26+4
5z=30
Divide both sides by 5.
5z/5 = 30/5
z=6
Slope = 2, passing through (-3, 8)
Answer:
y - 8 = -2(x + 3)
General Formulas and Concepts:
Point-Slope Form: y - y₁ = m(x - x₁)
x₁ - x coordinate
y₁ - y coordinate
m - slope
Step-by-step explanation:
Step 1: Define
Slope m = -2
Point (-3, 8)
Step 2: Write equation
y - 8 = -2(x + 3)
Direct and Indirect Proportions
1.
The ratio of Mumuni's age to his father's age is 3:5. The
sum of their ages is 96years. What is Mumuni's age?
2.
Peter and John shared GH¢1000.00 in the ratio 2 : 5
Calculate the amount each received.
3.
Mr. Opuni shared GH¢15,000.00 among his three childre
Gloria, Ophelia and Tina in the ratio 3:5:7. Calculate t
amount each received.
4.
The angles of a triangle are in the ratio 6:5: 7. Calc
the size of each angle.
Answer:
?
Step-by-step explanation:
You start at (-4, 0). You move right 9 units and down 4 units. Where do you end?
Answer:
5,-4
Step-by-step explanation:
-4 + 9 = 5 and 0 -4 = -4 so the answer will be (5,-4)
Answer:
(5,-4)
Step-by-step explanation:
-4 + 9 = 50 - 4 = -4Put them together: (5, -4)I hope this helps!
Simplify. ( 2^9 × 3^5 ) × ( 2^4 × 3 )^2
The Choices Are
A. 16^20
B. 6^24
C. 2^13 x 3^7
D. 2^17 x 3^7
According to my study guide the answer is D, but I am unsure how to get to that answer.
Step-by-step explanation:
hope this helps you my friend
you can refer the steps I've added in the pic
Find the time (in years):
Principal: $80
Interest: $52
Interest Rate: 13%
Answer:
Rs 845
let me know if need the process
What is the first step when solving the equation: 3x-8=343x−8=34 ?
Answer:
Adding 3x and 343x together
Step-by-step explanation:
and then you'd have 346x + -16 = 34
just comment if you need the answer to the equation too good luck ;)
which of the ordered pairs is a solution to the system of inequalities?
Given f (x) = 6 (1- x), what is the value of f (-5)?
Answer: 36
Step-by-step explanation:
1) substitute x for 6
get f(-5)=6(1--5)= 6+30=46
Answer:
f(-5)=6(1-(-)5) f(-5)=6×6
f(-5)=36 Hope this will be helpful
What Quadrant is 4,-8 located in
Answer:
4
Step-by-step explanation:
6/root of 12. Rationalize the denominator
Answer:
Step-by-step explanation:
hi
[tex]\dfrac{6}{\sqrt{12}}=\dfrac{2\times 3}{\sqrt{2^2\times 3}}=\dfrac{3}{\sqrt{3}}=\sqrt{3}[/tex]
thanks
Pls help
Find the questions?
Answer:
Step-by-step explanation:
(a). - 5t² + 35t - 60 = 0
(b). (x - 3)(x - 4) = 0
(c). t = 3, 4
The distance from Joe's house to the creek is 5.5 km. The distance from Jane's house to the creek is twice as far. Both Joe and Jane are leaving their houses to go to the creek. How much further, in meters, does Jane have to walk than Joe?
Answer:
5500 meters
Step-by-step explanation:
Convert 5.5 km to meters= 5500meters
Find distance of Jane's house to the creek= 11000 meters
Subtract both distances= 11000-5500= 5500 meters
Please help! I am struggling in my math course.
Answer:
That is a function so type y
Step-by-step explanation:
This is a one to one relationship and each input has one output so pick the 4th bubble D
I hope this helps
5. Veronika works at Future Shop and earns $10.50/h plus 6% commission on sales. Last week Veronika worked 40
hours. What was Veronika's weekly gross salary if her total sales were $2050?
The table shows how far a distance runner has traveled since the race began. What is her average rate of change, in miles per hour, during the interval 0.75 to 1.00 hours?
Time Elapsed (Hours)
Miles Traveled (Miles)
0.50
2.00
0.75
3.50
1.00
4.75
4.75 miles per hour
5.00 miles per hour
5.50 miles per hour
6.00 miles per hour
Answer:
B
Step-by-step explanation:
Just took test on edge.
Average rate of change, miles per hour, during the interval 0.75 to 1.00 hours is 5 miles per hour.
What is Average Rate of Change of a Function?Average rate of change of a function is defined as the rate at which the value of the function is changing with respect to the change in the input values.
Given a table which shows how far a distance runner has traveled since the race began.
If f(x) is a function, the average rate of change of the function in the interval [a, b] is,
f(b) - f(a) / b - a
Here the interval is (0.75, 1).
Average rate of change of the function is,
Average rate of change = (4.75 - 3.50) / (1 - 0.75)
= 1.25 / 0.25
= 5
Hence the required average rate of change is 5 miles per hour.
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Ann cut her king-size chocolate bar into 12 equal parts. She ate 7 parts. Which equation shows two equivalent ways to represent how much chocolate is left from Ann's chocolate bar?
Answer:
= 5 parts left
Step-by-step explanation:
12-7=5
Answer:
Step-by-step explanation: 12-7=5
Jessica can swim a lap in 29 2/5 seconds, Marta can swim a lap in 28.7 seconds, Marta can swim a lap in 28.7 seconds, how much faster can Marta swim a lap than Jessica.
Answer:
Marta can swim a lap 0.7 or seconds faster than Jessica
If I work four days from 6-4:30 and earn $600. How much of taxes is being taken off my check
Answer:
80$
Step-by-step explanation:
246 divided by 3 using rectangular model
Answer:
82 is the answer
Step-by-step explanation:
hope it help you
For signing up for the rewards program at a pizzeria, Haley got a card with 15 points. For each pizza she orders, she earns 8 points. Once she hits 175 points, she gets a free pizza. How many pizzas will she need to order to get a free one?
Answer:
20 pizzas
Step-by-step explanation:
Read carefully and choose the name of the student who made the correct statement.
Answer:
Rosie is correct
Step-by-step explanation:
can i get brainliest
Answer:
Rosie
Step-by-step explanation:
The pH of randomly selected swimming pools follows a normal distribution with mean 7.4 and standard deviation 0.22. A pool should have a pH between 7.2 and 7.8 so that chlorine treatment is effective. What percentage of pools having an acceptable pH level
Answer:
78.383%
Step-by-step explanation:
The pH of randomly selected swimming pools follows a normal distribution with mean 7.4 and standard deviation 0.22. A pool should have a pH between 7.2 and 7.8 so that chlorine treatment is effective.
Using z score formula
z = (x-μ)/σ, where
x is the raw score
μ is the population mean
σ is the population standard deviation.
For x = 7.2
z = 7.2 - 7.4/0.22
z = -0.90909
Probability value from Z-Table:
P(x = 7.2) = 0.18165
For x = 7.8
z = 7.8 - 7.4/0.22
z = 1.81818
Probability alue from Z-Table:
P(x = 7.8) = 0.96548
The probability of pools having an acceptable pH level(7.2 and 7.8)
= P(x = 7.8) - P(x = 7.2)
= 0.96548 - 0.18165
= 0.78383
Converting to percentage
0.78383 × 100
= 78.383%
The percentage of pools having an acceptable pH level is 78.383%
Which of the following expressions is equivalent to the one below? 7(x + 7)
A.
7 + (x + 7)
B.
7x + 49
C.
7x + 7
D.
x + 49
