Answer:
1. 80 miles
2. $22
Step-by-step explanation:
1. i did 48 divided by 60 and got .8
then i multiplied .8 by 100 and got 80
2. i did 88 multiplied by .25
A player had scores of 284, 192, 264, and 128 at a Yahtzee tournament. What was his mean score?
Answer:
217
Step-by-step explanation:
"Mean" = averageTo find the average: add the numbers together and then divide the sum by the amount of numbers added284 + 192 + 264 + 128 = 868868 ÷ 4 = 217So, the average is 217I hope this helps!
Answer:
217
Step-by-step explanation:
The mean or average is calculated by taking the sum or addition of the data points, and dividing by the number of data points. This is known as a sample of data because it is a subset of data.
In simple terms, add all the numbers up, and divide by the number of numbers.
Arithmetic mean of a sample:
[tex]\bar{X} =\: \frac{\sum X}{n} [/tex]
In this case the mean or average is:
Mean = 284 + 192 + 264 + 128 / 4 = 868 / 4 = 217
Help ASAP
Add these expressions
(3x+15) + (4x+13)
Answer:7x+28
Step-by-step explanation:
Answer:
7x + 28
Step-by-step explanation:
Line up the columns just like with standard addition. Keep the x numbers in the same columns and keep the integers in their columns. It will look like this:
3x + 15
PLUS 4x + 13
----------------------
7x + 28
Dancing Pools sells swimming pools in 4 sizes. The small pool is 72 feet
long and 18 feet wide. The medium pool is 80 feet long and 20 feet wide. The
large pool is 88 by 22. If the new superduper Coffeetable pool is 96 feet long,
how wide will it be?
Answer:
24 feet wide
Step-by-step explanation:
72/18 = 4
80/20 = 4
88/22 = 4
Since there is one common answer between all sizes, you can make a ratio to help or you can use inverse operations.
Inverse operations is easier, so you would divide 96 by 4, and that will equal 24.
1. which group weighed the most per item on the scale? how much did it weigh?
which group weighed the least per item on the scale? how much did it weigh?
And also complete the table.
Please help it is due right now ASAP
Answer:
cars weighed the most per item and desks the least
WHAT IS THE VALUE OF B helpppp plz ?
A major airline company is concerned that its proportion of late arrivals has substantially increased in the past month. Historical data shows that on the average 18% of the company airplanes have arrived late. In a random sample of 1,240 airplanes, 310 airplanes have arrived late. If we are conducting a hypothesis test of a single proportion to determine if the proportion of late arrivals has increased, what is the correct statement of null and alternative hypotheses
Answer:
The correct statement is
The null hypothesis is [tex]H_o : p = 0.18[/tex]
The alternative hypothesis is [tex]H_a : p > 0.18[/tex]
Step-by-step explanation:
From the question we are told that
The population proportion is p = 0.18
The sample size is n = 1240 airplane
The number of airplane is k = 310
Generally the sample proportion is
[tex]\^ p = \frac{k}{n}[/tex]
=> [tex]\^ p = \frac{310}{1240}[/tex]
=> [tex]\^ p =0.25[/tex]
The null hypothesis is [tex]H_o : p = 0.18[/tex]
The alternative hypothesis is [tex]H_a : p > 0.18[/tex]
Please help with this easy fraction problem. <3
Answer:
107/56 miles further on Sunday
Step-by-step explanation:
biked 139/8 saturday
biked 135/7 sunday
which fraction is greater by finding a common denominato 107/56r
Least common Denominator of 7 and 8 is 56
139x 7/8 x 7= 973/56
135x8/7 x 8=1080/56
1080/56 - 973/56 = 107/56
Therefore he rode further on Sunday further by 107/56 miles
Tom took a trip of 1,020 miles. He traveled by train at 55 miles an hour and the same number of hours by plane at 285 mph. How many hours did the trip take?
Answer:
3 hours
Step-by-step explanation:
285+55+285+55+285+55=1020
or another way
285+55×3= 1020
(-26) + (+6) - (-67)do u guys know the answer?
Answer:
47
Step-by-step explanation:
Simplify the following:
-26 + 6 - -67
Hint: | Multiply -1 and -67 together.
-(-67) = 67:
-26 + 6 + 67
Hint: | Evaluate 6 + 67 using long addition.
| 1 |
| 6 | 7
+ | | 6
| 7 | 3:
73 - 26
Hint: | Subtract 26 from 73.
| 6 | 13
| 7 | 3
- | 2 | 6
| 4 | 7:
Answer: 47
ms.khan ask her math students to find an equation of a line which has a graph parallel to line y=-2x+1 and which passes through the point (4,-2) n
2x+y=0
2x+y=6
x-2y=-10
x-2y=8
Answer:
y=-2x+b
-2=-8+b
6=b
y=-2x+6
so
2x+y=6
Graph. f(x) = |2x+2| - 1
Answer:
I included the graph for you, hope this helps!
Step-by-step explanation:
Solve each equation.
Show all steps
4) -8(-6-5k)=-232
the answer is k=4.6. hope this helps
The mean and standard deviation of a random sample of n measurements are equal to and , respectively. a. Find a % confidence interval for if n. b. Find a % confidence interval for if n. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed?
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
[tex]33.55 < \mu < 35.5[/tex]
b
[tex]34.03 < \mu < 34.969 [/tex]
c
Generally the width at n = 49 is mathematically represented as
[tex]w = 2 * E[/tex]
[tex]w = 2 * 0.952 [/tex]
[tex]w = 1.904 [/tex]
Generally the width at n = 196 is mathematically represented as
[tex]w = 2 * E[/tex]
[tex]w = 2 * 0.4687 [/tex]
[tex]w = 0.9374 [/tex]
d
The correct option is E
Step-by-step explanation:
From the question we are told that
The sample mean is [tex]\= x = 34.5[/tex]
The standard deviation is [tex]s = 3.4[/tex]
Generally given that the confidence level is 95% then the level of significance is
[tex]\alpha = (100 - 95)\%[/tex]
=> [tex]\alpha = 0.05 [/tex]
Generally from the normal distribution table the critical value of [tex]\frac{\alpha }{2}[/tex] is
[tex]Z_{\frac{\alpha }{2} } = 1.96[/tex]
Considering question a
From the question n = 49
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * \frac{s }{\sqrt{n} }[/tex]
=> [tex]E = 1.96* \frac{ 3.4 }{\sqrt{49} }[/tex]
=> [tex]E = 0.952 [/tex]
Generally 95% confidence interval is mathematically represented as
[tex]\= x -E < p < \=x +E[/tex]
[tex]34.5 -0.952 < p < 34.5 + 0.952[/tex]
=> [tex]33.55 < \mu < 35.5[/tex]
Considering question b
From the question n = 196
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * \frac{s }{\sqrt{n} }[/tex]
=> [tex]E = 1.96* \frac{ 3.4 }{\sqrt{196} }[/tex]
=> [tex]E = 0.4687 [/tex]
Generally 95% confidence interval is mathematically represented as
[tex]\= x -E < p < \=x +E[/tex]
[tex]34.5 -0.4687 < p < 34.5 +0.4687[/tex]
=> [tex]34.03 < \mu < 34.969 [/tex]
Considering question c
Generally the width at n = 49 is mathematically represented as
[tex]w = 2 * E[/tex]
[tex]w = 2 * 0.952 [/tex]
[tex]w = 1.904 [/tex]
Generally the width at n = 196 is mathematically represented as
[tex]w = 2 * E[/tex]
[tex]w = 2 * 0.4687 [/tex]
[tex]w = 0.9374 [/tex]
Now when the sample size is quadrupled i.e from n = 49 to n = 196
The width of the confidence interval decrease by 2 from 1.904 to 0.9374
Alondra is training for a 5 mile race. The table below shows how many strides Alondra takes as she builds up to running 5 miles. How many strides will Alondra take to run 4 miles? Exercise Log Miles 1 2 4 5. Strides 2,640 5,280 13,200
Answer:
7920
Step-by-step explanation:
Subtract -2x^2+4x-1−2x
2
+4x−1minus, 2, x, squared, plus, 4, x, minus, 1 from 6x^2+3x-96x
2
+3x−96, x, squared, plus, 3, x, minus, 9.
Your answer should be a polynomial in standard form.
Answer:
8x²- x -8
Step-by-step explanation:
The question is not well written. I guess what you mean is:
Subtract -2x^2+4x-1 ( minus 2x squared plus 4x minus 1) from 6x^2+3x-9 (6x squared plus 3x minus 9).
To subtract -2x^2+4x-1 from 6x^2+3x-9, that is
6x^2+3x-9 - (-2x^2+4x-1). This can be written as
6x²+3x-9 - (-2x²+4x-1)
Now, opening the bracket, we will get
6x²+3x-9 +2x²-4x+1
Then, collecting like terms, we get
6x²+2x²+3x-4x-9+1
6x²+2x² = 8x²
3x-4x = -x
-9+1 = -8
∴6x²+2x²+3x-4x-9+1 becomes
8x²-x -8
The answer is 8x²-x -8.
Simplified form of the polynomial :
8x²- x -8
Given(correct form of question):
Subtract -2x²+4x-1 ( minus 2x squared plus 4x minus 1) from 6x²+3x-9 (6x squared plus 3x minus 9).
Now,
To subtract -2x²+4x-1 from 6x²+3x-9, that is
6x²+3x-9 - (-2x²+4x-1). This can be written as
6x²+3x-9 - (-2x²+4x-1)
Now, opening the bracket, we will get
6x²+3x-9 +2x²-4x+1
Then, collecting like terms, we get
6x²+2x²+3x-4x-9+1
6x²+2x² = 8x²
3x-4x = -x
-9+1 = -8
∴6x²+2x²+3x-4x-9+1 becomes 8x²-x -8
Thus,
The answer is 8x²-x -8.
Learn more about polynomials,
https://brainly.com/question/29182596
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If y is 20, what is x?
When y=20 , x is −5.
Answer:
Depends on the formula given
Everglades National Park is 225 mi long. What scale is needed to draw a map of Everglades National Park that is 10 in. long?
A. 1 in. = 22.5 mi
B. 10 in. = 225 mi
C. 1 in. = 0.04 mi
D. 10 in. = 22.5 mi
Answer:
A. 1 in. = 22.5 mi
Step-by-step explanation:
Since 22.5 x 10 = 225, we can conclude that this will fit the scale needed. B. is incorrect because it is simply illogical in context with a scale and the question. C. is incorrect since 10 x 0.04 is 0.4, which does not equal 10. D. is incorrect since we need the scale to add up to equal 225 mi, not 22.5.
Hope this helps!
×/4=3 whats the answer
Answer:
x=12
Step-by-step explanation:
quick maffs
Answer:
12
Step-by-step explanation:
just do 3 times 4
A university designs its campus with a master plan of two concentric circles. All of the academic buildings are within the inner circle (so that students can get between classes in less than 10 minutes), and the outer circle contains all the dormitories, the Greek park, cafeterias, the gymnasium, and intramural fields. Assuming the center of campus is the origin, write an equation for the outer circle if the diameter is 3800 feet. Equation Editor
Answer:
[tex]x^2+y^2=36100000[/tex]
Step-by-step explanation:
Here it is mentioned that the there are two concentric circles this means that they have the same center.
The center of the circles are the origin [tex](0,0)[/tex].
Radius of the outer circle is
[tex]r=\dfrac{3800}{2}=1900\ \text{m}[/tex]
Equation of a circle
[tex](x-a)^2+(y-a)^2=r^2[/tex]
where
[tex]a\ \text{and}\ b\ \text{are the}\ x\ \text{and}\ y\ \text{coordinates of the center}[/tex]
[tex]r=\text{Radius of the circle}[/tex]
Here the equation will be
[tex](x-0)^2+(y-0)^2=1900^2\\\Rightarrow x^2+y^2=3610000[/tex]
The equation of the outer circle is [tex]x^2+y^2=3610000[/tex]
(9,0) (3,-4) slope??
Answer:
2/3
Step-by-step explanation:
Answer:
2/3
Step-by-step explanation:
formula: y2-y1/x2-x1
-4-0/3-9=
-4/-6=
2/3
-9 - 11 = 2q + 4
Solve?
Answer:
q = -12
Step-by-step explanation:
-9 - 11 can be written as -9 + (-11)
-20 = 2q + 4
Subtract 4 from both sides.
-24 = 2q
Divide both sides by 2
-12 = q
Hope I helped :)
Please consider Brainliest :)
Last week a gamestop store sold some $43 games and some $30 games for a total of $485 . what was the total number of games sold?
Answer:
14 games
Step-by-step explanation:
43
X 5
-----
$215 - 5 games
$245 - 6 games
$275 - 7 games
$305 - 8 games
$335 - 9 games
$365 - 10 games
$395 - 11 games
$425 - 12 games
$455 - 13 games
$485 - 14 games
Answer:
14 games
Step-by-step explanation:
the remote areas away from the coast is
Answer:
Pole of Inaccessibility
(NEED HELP WILL GIVE BRAINLIEST) Jesse and Miya are playing the internet card game. The cards in jesse’s hand are 5,-3,7,-6 what is the total score of jesse’s hand?
Answer:
3 (if you're supposed to add them)
Step-by-step explanation:
7+5=12
12+(-3)=9
9+(-6)=3
Answer:
I believe the answer is 3
Explanation:
5+(-3)+7+(-6) = 3
Hope this Helps!
There are 2 teachers for
24 students. If a school has
10 teachers, how many students?
Answer:
10 teachers= 120 students
Step-by-step explanation:
2 teachers= 24 students
divide 24 and 2 which 12
1 teacher= 12 students
multiply 10 and 12 which equals to 120
10 teachers= 120 students.
Pls mark as brainliest, thank u.
a
4. © MP.4 Model with Math The veterinarian
has seen 47 dogs, 19 cats, 7 exotic birds, and
3 horses this week. Complete the bar diagram
and find the total number of animals seen by
the veterinarian this week.
Answer: 76
Step-by-step explanation:
47+3= 50
19+7=26
50+26=76
Where's the Bar Diagram?
Hope this Helps!
Solve each problem. Show all your steps
(−2) ∙ (−5)
Answer:
-2 * (-5)
minus times minus is plus
ans = 10
Loren spent $42.25 to fill her car with 13 gallons of gas. How much did Loren pay per gallon?
Answer: 3.25
Step-by-step explanation: What I did was Multiply 42.25 by 100 ( To make it easier) and then divide it by 13. After that, I divided the quotient by 100 to get the real answer, which was 3.25
Let me know if I was helpful or not!
DESPERATE HELP NEEDED!!!
MATHS!!!
WILL AWARD BRAINLIEST!!!
Answer:
a) 24
b) f^-1 = [tex]\sqrt{x+1}[/tex]
c) 3
Step-by-step explanation:
Just plug the numbers in for x:
(5)^2 -1 = 24
Switch x and y then solve for y and replace y with f^-1(x):
x = y^2 -1
sqrt(x +1) = y = f^-1(x)
Now plug in 8:
f^-1(x) = sqrt(8 +1) = 3
can you help me out
Answer:
A. Multiplication of a positive number and a number greater then 1 increases the number.
Hope this help! :)
