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Related Questions
PLAZ HELPPP PWETRYYY PSLOD
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Answer:
=
Step-by-step explanation:
whatever comes out of an absolute value is always positive so 8=8
A sample of 64 account balances from a credit company showed an average daily balance of $1,040. The standard deviation of the population is known to be $200. We are interested in determining if the mean of all account balances (i.e., population mean) is significantly different from $1,000. 1. State the null and alternative hypothesis. 2. Compute the test statistic. 3. Compute the p-value. 4. Based on the p-value and the significance level of 0.05% make a decision regarding the hypotheses. 5. Interpret your results in the context of the problem.
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Answer:
See step by step exlanation
Step-by-step explanation:
Assuming normal distribution
N( μ₀ , σ )
In this case N ( 1000, 200)
From a random sample of 64 accounts we get:
n = 64
x = sample mean x = 1040
σ = standard deviation of the population σ = 200
1.-Test Hypothesis
Null Hypothesis H₀ x = μ₀ = 1000
Alternative Hypothesis Hₐ x ≠ μ₀
The alternative hypothesis implies a two tail-test. Given that n > 30 and σ is known we will use z-table
2.- z(s) = ( x - μ₀ ) / σ/√n
z(s) = ( 1040 - 1000 ) / 200/ √64
z(s) = 40*8/200
z(s) = 1,6
3.-P-val for z (score 1,6) p-value = 0,0548
4.- If significance level is 0,05 then α = 0,05 and α/2 = 0,025
p-value > α/2
Then the z(s) < z(c) 1,6 < 1,96 where z(c) is z score for α/2
We should accept H₀
5.-We can claim that at 95 % (of Confidence Interval) the population mean is not significantly different from 1000 $
What is the answer to x+2+8x=
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Answer:
The answer is 2+9x
brainliest pls :D
x+8x=9x
2+9x
Answer:
9
Ava bought 2 sandwiches for a total of $5.25, a bowl of soup for $3.00, and a bag of chips for $1.25. How much change did she get back if she paid with a $20.00 bill?
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Answer:
Step-by-step explanation:
5.25
3.00
1.25
_____
$ 9.50
- 20.00
_______
$10.5
Kate’s father is a baker at the Morning Muffin Bakery. This morning the oven wasn’t working correctly and 2 dozen muffins burned. Kate’s father gave ¼ of what was left to Kate to take to school. He wrapped up ½ of the remaining muffins and sold them to the grocery store down the street. He then wrapped ⅓ of what was remaining and gave them to the coffee shop to sell. That left Kate’s father with a dozen muffins to sell at the bakery. How many muffins did Kate’s dad bake?
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Answer:
64
Step-by-step explanation:
Step 1: 12 divided by 3 = 4. 12+4 = 16.
I need to know what ⅓ of 12 is so I can continue the problem without messing up.
Step 2: 16*2 = 32.
Half of however many are left is 16.
Step 3: 32 divided by 4 is 8. 32+8 is 40. Two dozen is 24. 40 + 24 = 64.
Now we know the answer.
Boom.
Caroline needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 2.75 hours and charged her $114 for parts. The total was $320.25. Write and solve an equation which can be used to determine xx, the cost of the labor per hour.
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-114 -114
2.75(x)=206.25
/2.75. /2.75
X=75
It costs 75$ per hour
This is because we don’t know how much they charge per hour but we know the number of hours spend working on the computer, so you have to do 2.75(x) where x represents the cost per hour And we also know that the cost of the part is $114 so we have to add that to
(2.75(x)+114) the equation then finally you have to make the expression equal to 320.25 since we know the final cost so
2.75(x)+114=320.25
Please solve quickly, will give brainliest
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Answer:
Step-by-step explanation:
for 1 cube of 6 sides, it takes 5 grams
so 1 side is 5/6th grams
now how many sides of small cubes are shown is 42
42*5/6=35 grams
Answer:
180 grams
Step-by-step explanation:
5gramsx number of squares
5gramsx 36=180grams
Pleasee helppp it’s due todayyy
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Answer:
88 is a solution to 1/8 x =11, since a solution means that x is equal to that number, so in this scenario, x=88. When substituted(88*0.125), the same answer, 11, is obtained.
Step-by-step explanation:
Help please!! I’ll give best answer brainliest!!
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Answer:
D, The last one
Step-by-step explanation:
Evaluate 3-(5-10)-7+1-6
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Answer:
[tex] - 4[/tex]
Step-by-step explanation:
1) Simplify 5 - 10 to -5.
[tex]3 - ( - 5) - 7 + 1 - 6[/tex]
2) Remove parentheses.
[tex]3 + 5 - 7 + 1 - 6[/tex]
3) Simplify 3 + 5 to 8.
[tex]8 - 7 + 1 - 6[/tex]
4) Simplify 8 - 7 to 1.
[tex]1 + 1 - 6[/tex]
5) Simplify 1 + 2 to 2.
[tex]2 - 6[/tex]
6) Simplify.
[tex] - 4[/tex]
Therefor, the answer is -4.
Ms. Smith mixes orange juice with seltzer in a ratio of 3:1. If she uses 48 ounces of orange juice, how many ounces of seltzer does she need?
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Answer:
16 oz
Step-by-step explanation:
the ratio is 3 oz of oj to 1 oz of seltzer.
I pretty much just divided 48 by 3.
I hope this is correct and I hope it helps you!
What fraction is equivalent to 8%
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2/25
4/50
8/100
this are the smallest fractions equivalent to 8%
Answer:
8/100
Step-by-step explanation:
8% = 0.08 = 8/100
let me know if you need more of an explaination <33
Name the two congruent triangles
Answers
Answer:
∆ABE ≅ ∆DCE by SAS Congruence Theorem.
Step-by-step explanation:
The diagram given indicates the following:
<E ≅ <E (vertical angles)
AE ≅ DE
BE ≅ CE
Thus, an included angle, <E, and two side lengths, AE and BE, in ∆ABE are congruent to an included angle, <E, and two corresponding side lengths, DE and CE, in ∆DCE. By the SAS Congruence Theorem, both angles are congruent to each other.
Therefore:
∆ABE ≅ ∆DCE by SAS Congruence Theorem.
Calculate the area, in terms of x and in simplest form, of the rectangle shown below.
5x + 4
2x - 5
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5x +4 the x is 2 the answer to this is 14
2x-5 the x is 4 the answer to this is 13
please help thank you
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Answer:
a is the answer hope this help:D
Step-by-step explanation:
Which equation can be used to describe the pattern in the table
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Answer:
I feel like its C.
Step-by-step explanation:
Answer:
the answer is C
Step-by-step explanation:
because all the a values are 5 more than b
Ms. Buford surveyed 55 students on their preference of playing football or hockey. The results are shown below.
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Answer:
1 Monique has three sons who play football, two sons who 2 The accompanying diagram shows the results of a survey asking which sports the members of the Key 6 In Ms. Wright's English class, 16 students are in band ... are shown in the Venn diagram below. 11 A school district offers hockey and basketball. The
Step-by-step explanation:
3. What are the solutions to 2(x-7) = 327
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Answer:
if u mean what x is equal to then x=341/2
Step-by-step explanation:
Need help please help me
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Answer choices please help
240
200
240
280
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The length of a rectangle is increasing at a rate of 4 meters per day and the width is increasing at a rate of 1 meter per day. When the length is 10 meters and the width is 23 meters, then how fast is the AREA changing
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Answer:
[tex]\displaystyle \frac{dA}{dt} = 102 \ m^2/day[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightGeometry
Area of a Rectangle: A = lw
l is lengthw is widthCalculus
Derivatives
Derivative Notation
Implicit Differentiation
Differentiation with respect to time
Derivative Rule [Product Rule]: [tex]\displaystyle \frac{d}{dx} [f(x)g(x)]=f'(x)g(x) + g'(x)f(x)[/tex]
Step-by-step explanation:
Step 1: Define
[tex]\displaystyle l = 10 \ meters[/tex]
[tex]\displaystyle \frac{dl}{dt} = 4 \ m/day[/tex]
[tex]\displaystyle w = 23 \ meters[/tex]
[tex]\displaystyle \frac{dw}{dt} = 1 \ m/day[/tex]
Step 2: Differentiate
[Area of Rectangle] Product Rule: [tex]\displaystyle \frac{dA}{dt} = l\frac{dw}{dt} + w\frac{dl}{dt}[/tex]Step 3: Solve
[Rate] Substitute in variables [Derivative]: [tex]\displaystyle \frac{dA}{dt} = (10 \ m)(1 \ m/day) + (23 \ m)(4 \ m/day)[/tex][Rate] Multiply: [tex]\displaystyle \frac{dA}{dt} = 10 \ m^2/day + 92 \ m^2/day[/tex][Rate] Add: [tex]\displaystyle \frac{dA}{dt} = 102 \ m^2/day[/tex]Topic: AP Calculus AB/BC (Calculus I/II)
Unit: Implicit Differentiation
Book: College Calculus 10e
Can someone give me the answer please?
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Answer:
16
Step-by-step explanation:
Hey There!
So the x values are the same so all we have to do is subtract the y values
to be more specific y1-y2
so the distance is equal to 7--9
the negative signs cancel out so now its 7+9
7+9=16
so the distance between the two points is 16
hope this helps :)
Answer:
D. 16 units
Step-by-step explanation:
You could draw a coordinate plane or think of it this way:
They will all be in line with -4 and they will be at -9 and 7. You should add them together to find the distance. 9 + 7 = 16
D. 16 units
The image shows a coordinate plane:
A submarine is descending at a rate of 7 feet per second.
A 2-column table with 4 rows. Column 1 is labeled Seconds with entries 1, 2, 3, 4. Column 2 is labeled Feet with entries 7, 14, 21, 28.
Which statements are true? Select all that apply.
The number of seconds causes a change in the number of feet the sub descends.
The number of feet the sub descends causes a change in the number of seconds.
The equation is f = 7s.
The equation is s = 7f.
As the number of seconds increases, the number of feet the sub descends increases.
Answers
Answer:
A C E
Step-by-step explanation:
i got it right on edge :)
Answer:
A, C, E
Step-by-step explanation:
Just look at the person above no need to scroll down
ags of sugar come in 3 sizes.
Small bag: A 250 g bag costs 64p.
Medium bag: A 575 g bag costs £1.25.
Large bag: A 1.25 kg bag costs £2.54.
Find the cost per gram for each bag of sugar.
Round your answers to 3dp.
Write which size of bag is best value for money in the comment box.
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Answer:1 gram of the small bag costs 0.256p ,1 gram of the medium bag costs 0.217p and 1 gram of the big bag costs 2. 032p
Step-by-step explanation:
Find the value of x in the triangle shown below 3 6
5
√18
√27
4
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a^2 + b^2 = c^2
In this case we're looking for C
so
(3)^2 + b^2 = (6)^2
9 + b^2 = 36
b^2 = 36-9
√b^2 = √27
b = 3√3
Answer:
the answer is actually d= 27
Step-by-step explanation:
bernie helped design a magician costume for a school play
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Answer:
and.........................................
Step-by-step explanation:
The ribbon cost per foot $0.6 per foot
Step-by-step explanation:
Total number of ribbon used = (5.75 + 11.75) = 17.50 feet
17.50 feet of ribbon cost = $10.50
1 foot of ribbon cost = x
Cross Multiply
17.50 × x = 1 foot × $10.50
x = 1 foot × 10.50/17.50
x = $0.6
The ribbon cost per foot $0.6 per foot
The graph of triangle ABC is shown below:
What is the area, in square units, of triangle ABC?
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Answer:
36 square units
Step-by-step explanation:
Height = 9
Base = 8
Area of a triangle = A = 1/2bh
Plug in
1/2 (8) (9) = 4 x 9 = 36
please give me the answer
1 -10
2 -8
3 -2
4 -1
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PLEASE HELP: Find the value of S20 for the series of 5+8+11+14+....
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Answer:
17 alyezhh
Step-by-step explanation:
its adding by 3's loljjjjhggg
2/5 x = 3 1/5
ASAP ill give brainliest
Answers
Answer:
15 1/2
Step-by-step explanation:
Answer:
x=8
Step-by-step explanation:
Let's solve your equation step-by-step.
2 /5 x=3 1 /5
Step 1: Simplify both sides of the equation.
2 /5 x= 16 /5
Step 2: Multiply both sides by 5/2.
( 5 /2 )*( 2 /5 x) =( 5 /2 )*( 16 /5 )
x=8