Answer:
The correct option is d
Step-by-step explanation:
From the question we are told that
The sample size is n = 64
The mean is [tex]\= x = 320[/tex]
The standard deviation is [tex]\sigma = 120[/tex]
Generally the standard error of the mean is mathematically represented as
[tex]\sigma_x = \frac{\sigma}{ \sqrt{n} }[/tex]
=> [tex]\sigma_x = \frac{120}{ \sqrt{64} }[/tex]
=> [tex]\sigma_x =15[/tex]
(iready question pls answer ASAP)
What is the equation of the line?
A) y=2x+2
B) y=2x-4
C) y=1/2x+2
D)y=1/2x-4
Which table of ordered pairs represents a proportional relationship? I need this asap
Answer: It's the third one
Step-by-step explanation:
Answer:
box # 1
Step-by-step explanation:
y2 -y1
x2-x1
each set of numbers will be simplified to 1
4,8 7,11
7,11 10,14
4,8, 10,14 do them all as the first step and you will come out with same
answer
I need help finding the equations of the line in slope intercept form
what is 4 and 1 /3 times 6
Answer:
25.8
Step-by-step explanation:
1/3 = .3
4.3 * 6 = 25.8
So 4 and 1/3 times 6 is 25.8 or 25 and 8/10
I hope this helps!! :) blessings, stay safe, xx, nm <3
Answer: 25.9999...
Explain: The answer is 25.9999...
the 9’s are never ending.
Help please .........
Answer:
50%, 20%, 36%
Step-by-step explanation:
A: 2012=190, 2014=285. 95 more students. 95 is half of 190.
B: 2014=285, 2015=228. 57 less students. 57 is 20% of 285.
C: 2013=210, 2014=285. 75 more students. 75 is roughly 36% of 210.
Help me please I really need help
Answer:
Step-by-step explanation:
Tower 1: 4 times 4 times 5
80 cubic units
Tower 2:
10 times 5 times 4
200 cubic units
T 3= 12 times 1 times 4
48 cubic units
T 4= 69 cubic units
Alice solves every puzzle with probability 0.6 , and Bob, with probability 0.5 . They are given 7 puzzles and each chooses 5 out of the 7 puzzles randomly and solves them independently. A puzzle is considered solved if at least one of them solves it. What is the probability that all the 7 puzzles happen to be solved by at least one of them
Answer:
0.021943
Step-by-step explanation:
Alice solves every puzzle with a probability of 0.6
Bob solves every puzzle with a probability of 0.5
Number of puzzles given = 7
The probability of a puzzle been solved by either Alice or Bob
P = P( A U B ) = P( A ) + P( B ) - P( A n B )
= 0.6 + 0.5 - ( 0.6 * 0.5 ) = 0.8
probability of all 7 puzzles solved = (P( A ))^2 * ( P )^3 * (p(B))^2
= ( 0.6 )^2 * (0.8)^3 * (0.5)^2 = 0.04608
Finally determine the P ( choosing 5 out of 7 for both such that all the 7 are chosen )
attached below is the remaining part of the solution
30.2 - 36 + 12.3 - (- 4.8) =
Answer:11.3
Step-by-step explanation:
To make a box of cookies, Leila needs 1 cups of melted chocolate.
How many cups of melted chocolate does Leila need to
make 2 - boxes of cookies?
Answer:
2 cups of melted chocolate
Step-by-step explanation:
1 box of cookies = 1 cup of melted chocolate
Therefore, 2 box of cookies = 2 cups of melted chocolate
HELP HELP HELP First to "help" rather than just answer with a random thanks for the points kinda response gets brainliest
Helppp meeeeeee asappppppp
Answer:
9.2
Step-by-step explanation:
So the 14 can be divided equally on both sides by the fact that the line cutting it at right angle bisects it.
Thus having 6 and 7 as the two shorter sides of a right angled triangle will help us get the radius( hypotenuse in this case) using the square root of the sum of the squares of both six and 7, the Pythagoras theory.
this leads to 9.2 as our answer
If I can drive 4,800 miles in 48 hours and I am driving at constant speed, how many miles will I travel each hour?
Answer:
im pretty sure its 100 miles
Step-by-step explanation:
4800 divided by 48 is 100
2 to the trird power plus 3 to third power - 3x4 - 5 to the seacond power divid by 5 plus (7x4)
You own a share of a stock worth $400 . It decreases 5% .how much is it worth now?
Answer:
380$
Step-by-step explanation:
Multiply 400*5%=20
Then subtract 400-20=380
Answer:
$380
Step-by-step explanation:
10 Points!
Marco’s football team gained 13 yards on their first play, but lost 7 yards on the second. How many yards did they gain between the two plays?
Answer:
6 yards were gained between the two plays.
Step-by-step explanation:
13 minus 7 is 6.
Losing a value is decreasing, so you would use a negative sign.
Subtract the partial value lost from the total.
You get 6.
Answer:
6 yards. Marco and his football to got 6 yards.
The diagram shows three parallel lines that are cut by two transversals what is the value of r
Answer:
Step-by-step explanation:
C
Find the equation of the line with slope 3/7 and that passes through the point (14, 0). Write your answer in the form y = mx + b.
Answer:
y = 3/7x - 6
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS Equality PropertiesAlgebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
Slope m = 3/7
Point (14, 0)
Step 2: Find y-intercept b
Substitute: 0 = 3/7(14) + bMultiply: 0 = 6 + bIsolate b: -6 = bRewrite: b = -6Step 3: Write linear equation
y = 3/7x - 6
a submarine starts 800m below the surface of the ocean. It rises at a rate of 40m / min for 15 minutes. How much more does the submarine need to rise to reach 50m below the surface?
How can you move a pyramid? Circle the answer
Stack
Slide
Roll
Hi.., I hope your having a nice day :)) ... but I’m not to good with percents so I really need help on this question ... Thanks!
Answer:
625 trees
Step-by-step explanation:
Answer:
625
Step-by-step explanation:
27+16+33= 76
100-76 =24
24% are willows
150 trees are willows
150/24 = x/100
x = 625
Find two real numbers that have a sum of 8 and a product of 13
Answer:
The two numbers are 5.73 and 2,27
Step-by-step explanation:
Let the two numbers be x and y
[tex]x + y = 8[/tex]
[tex]xy = 13[/tex]
Make x the subject in the first equation
[tex]x = 8 - y[/tex]
Substitute 8 - y for x in the second equation
[tex](8-y)*y = 13[/tex]
Open brackets
[tex]8y - y^2 = 13[/tex]
Equate to 0
[tex]y^2 - 8y + 13 = 0[/tex]
Solve using quadratic formula
[tex]y = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}[/tex]
Where
[tex]a = 1[/tex] [tex]b = -8[/tex] [tex]c = 13[/tex]
So:
[tex]y = \frac{-(-8) \± \sqrt{(-8)^2 - 4*1*13}}{2*1}[/tex]
[tex]y = \frac{8 \± \sqrt{64 -52}}{2}[/tex]
[tex]y = \frac{8 \± \sqrt{12}}{2}[/tex]
[tex]y = \frac{8 \± 3.46}{2}[/tex]
Split
[tex]y = \frac{8 + 3.46}{2}[/tex] or [tex]y = \frac{8 - 3.46}{2}[/tex]
[tex]y = \frac{11.46}{2}[/tex] or [tex]y = \frac{4.54}{2}[/tex]
[tex]y = 5.73[/tex] or [tex]y = 2.27[/tex]
Recall that
[tex]x = 8 - y[/tex]
When [tex]y = 5.73[/tex]
[tex]x = 8 - 5.73[/tex]
[tex]x = 2.27[/tex]
When [tex]y = 2.27[/tex]
[tex]x = 5.73[/tex]
Hence, the two numbers are 5.73 and 2,27
Is 9, 5, 12, 11 solutions to 2w > 18?
All solutions are larger than 9
=========================================
Explanation:
Divide both sides by 2 and we get
2w > 18
2w/2 > 18/2 .... dividing both sides by 2
w > 9
Any number larger than 9 can replace w, and we'll get a true statement.
For instance, if we tried w = 12, then,
2w > 18
2*12 > 18
24 > 18
Which is true since 24 is indeed larger than 18.
On the flip side, if we tried w = 5, then,
2w > 18
2*5 > 18
10 > 18
which is not true because 10 is actually smaller than 18.
-------------------------
So again, the inequality 2w > 18 solves to w > 9
This shows all solutions are larger than 9.
If we can only pick values from the set {9,5,12,11}, then the solutions are 11 and 12 since they are larger than 9.
A gym charges each member $100 for a membership fee and $30 per month after that. How much money will a member spend after 6 months
Answer:
280
Step-by-step explanation:
Month 1: 100 + 30 = 150
Month 2: +30
Month 3: +30
Month 4: +30
Month 5: +30
Month 6: +30
Total: 280
Hope this helps!
Answer:
$280
Step-by-step explanation:
For this problem, we simply need to take the initial cost of membership and add that to the reoccurring cost from a time period, in this case, 6 months. So let's make an equation to represent this.
The initial cost is $100
The per month cost is $30
Total cost after 6 months = Inital cost + Per Month Cost * 6 months
Total cost = $100 + $30 * 6
Total cost = $100 + $180
Total cost = $280
Thus, a member will spend $280 after 6 months on the membership.
Cheers.
3.75 ÷ 1.50 is equivalent to 375 ÷ 150.
The dividend and divisor were both multiplied by
Answer:
100
Step-by-step explanation:
Moving the decimal point 2 places to the right is equivalent to multiplication by 100.
Both were multiplied by 100.
Y=2x-4 and x=12 then y=
Answer:
Y = 20
Step-by-step explanation:
Because x = 12 we do:
2(12) - 4.
2 x 12 = 24.
24 - 4 = 20.
I hope this helps :)
How many fish and reptile pets are in the untied states all together? Estimates show that there are 1.4 times 10^2 pet fish and 9.4 times 10^6 pet reptiles in the untied states. In scientific notation ( ??? Pets)
Answer:
1.4*(10^2)=140
9.4*(10^6)=9,400,000
Step-by-step explanation:
An industry consists of three firms with sales of $380,000, $805,000, and $425,000.
a. Calculate the Herfindahl-Hirschman index (HHI). Instruction: Round to the nearest integer.
b. Calculate the four-firm concentration ratio (C4).
c. Based on the FTC and DOJ Horizontal Merger Guidelines described in the text, is the Department of Justice likely to attempt to block a horizontal merger between two firms with sales of $380,000 and $425,000?
The Herfindahl–Hirschman Index, or "HHI," is a widely used indicator of market concentration. The HHI is derived by squaring each rival firm's market share and then adding the obtained figures together.
What is the solutions to the required calculations?(a) Total market ($'000) = 380 + 805 + 425 = 1,610
Firm 1 share = 380/ 1,610x 100 = 23.60%Firm 2 share = 805 / 1,610 x 100 = 50.00%Firm 3 share = 425 / 1,610 x 100 = 26.40%HHI = (23.60)² + (50.00)² + (26.40)² = 3753.92
(b) Since there are only 3 firms in market, four-firms concentration ratio will be 100% or 1
(c) Total revenue share of the two firms = (380+ 425) / 1440 x 100 = 55.90%
Post-merger HHI = (55.90)² + (50.00)² = 5624.81
This merger will, in fact, be stopped. This is because the regulation deems any HHI exceeding 1,800 after a merger to be a highly concentrated market, and so this merger will most likely be blocked.
Learn more about Herfindahl-Hirschman index (HHI) at:
https://brainly.com/question/17149410
#SPJ1
Please help it due today at 3:00pm please will mark the brainiest please help me
Answer:
P=2
Step-by-step explanation:
Answer:
2 pounds
Step-by-step explanation:
4.05 p +14.4=4.5p+13.5
14.4=.45p+13.5
.9=.45p
45p=90
p=2
Choose the graph that correctly represents the equation 2x + 4y = 24. line through the points 0 comma 6 and 12 comma 0 line through the points 0 comma negative 6 and 12 comma 0 line through the points 0 comma negative 12 and 6 comma 0 line through the points 0 comma 12 and 6 comma 0
Answer:
(0,6) (12,0)
Step-by-step explanation:
A batsman scored the following number of runs in six innings:
35, 30, 45, 65, 44, 21. Calculate the mean runs scored by him in
(a) 39
(b) 38
(c) 37
(d) 40
Answer:
D
Step-by-step explanation:
The mean or average is calculated by summing each element and then dividing by the number of elements.
We have: 35, 30, 45, 65, 44, and 21.
There are six elements in total.
We find the sum by adding. Hence:
[tex]35+30+45+65+44+21=240[/tex]
We will now divide by 6, the number of elements:
[tex]240/6=40[/tex]
Therefore, the mean runs scored by the batsman is 40.
Hence, our answer is D.