no entendí bien puedes explicar mejor la pregunta si la entendí pero el contenido si
Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. He has a 10% alcohol solution and a
15% alcohol solution.
Which equation can Bruce use to determine how much of the 10% alcohol solution he should use?
Answer:
20 ml of 15% alcohol and 30 ml of 10% alcohol should be used to create a 12% alcohol solution.
Step-by-step explanation:
Since Bruce wants to make 50 ml of an alcohol solution with a 12% concentration, and he has a 10% alcohol solution and a 15% alcohol solution, to determine how much of the 10% alcohol solution he should make the following calculations:
0.9 x 15 + 0.1 x 10 = 14.5
0.7 x 15 + 0.3 x 10 = 13.5
0.5 x 15 + 0.5 x 10 = 12.5
0.4 x 15 + 0.6 x 10 = 12
50 x 0.4 = 20
Therefore, 20 ml of 15% alcohol and 30 ml of 10% alcohol should be used to create a 12% alcohol solution.
If $40 U.S. dollars are equivalent to 20.3765 British pounds then how many British pounds are equivalent to $1 U.S. dollar? Round your answer to the nearest thousandths.
34. Find each of the following probabilities when n indepen- dent Bernoulli trials are carried out with probability of success p. a) the probability of no successes b) the probability of at least one success c) the probability of at most one success d) the probability of at least two successes
Answer:
A.) (1 - p)^n
B.) 1 - (1 - p)^n
C.) (1 - p)^n + np*(1-p)^(n-1)
D.) 1 - (1 - p)^n - np*(1-p)^(n-1)
Step-by-step explanation:
General form of a binomial probability :
P(x = x) = nCx * p^x * q^(n-x)
q = 1 - p ; n = number of trials ; x = number of successes ; p = probability of success
A.) probability of no successes ;
P(x = 0) = nC0 * p^0 * (1 - p)^(n-0)
P(x = 0) = 1 * 1 * (1 - p)^n
P(x = 0) = (1 - p)^n
Probability of atleast one success = 1 - P(no success)
P(x ≥ 1) = 1 - P(x = 0)
P(x = 0) = (1 - p)^n
P(x ≥ 1) = 1 - P(x = 0) = 1 - (1 - p)^n
Probability of at most one success
P(x ≤ 1) = p(x = 0) + p(x = 1)
P(x = 0) = (1 - p)^n
P(x = 1) = nC1 * p^1 * (1 - p)^(n-1)
P(x = 1) = n * p * (1 - p)^(n-1) = np*(1-p)^(n-1)
P(x ≤ 1) = (1 - p)^n + np*(1-p)^(n-1)
Probability of atleast two successes:
(1 - probability of at most 2 successes)
P(x ≥ 2) = 1 - P(x ≤ 1)
P(x ≥ 2) = 1 - (p(x = 0) + p(x = 1))
P(x ≥ 2) = 1 - p(x = 0) - p(x = 1))
P(x ≥ 2) = 1 - (1 - p)^n - np*(1-p)^(n-1)
A recipe for pie please help me please
Answer:
Apple Pie (This recipe is from TasteofHome I did not make it)
Step-by-step explanation:
Ingredients
1/2 cup sugar
1/2 cup packed brown sugar
3 tablespoons all-purpose flour
1 teaspoon ground cinnamon
1/4 teaspoon ground ginger
1/4 teaspoon ground nutmeg
6 to 7 cups thinly sliced peeled tart apples
1 tablespoon lemon juice
Dough for double-crust pie
1 tablespoon butter
1 large egg white
Additional sugar
Directions
Preheat oven to 375°. In a small bowl, combine sugars, flour and spices; set aside. In a large bowl, toss apples with lemon juice. Add sugar mixture; toss to coat.
On a lightly floured surface, roll one half of dough to a 1/8-in.-thick circle; transfer to a 9-in. pie plate. Trim even with rim. Add filling; dot with butter. Roll remaining dough to a 1/8-in.-thick circle. Place over filling. Trim, seal and flute edge. Cut slits in top. Beat egg white until foamy; brush over crust. Sprinkle with sugar. Cover edge loosely with foil.
Bake 25 minutes. Remove foil; bake until crust is golden brown and filling is bubbly, 20-25 minutes longer. Cool on a wire rack.
1
Which graph shows x>-2?
m
A
-5
-3
-2
- 1
0
1
2
3
3
4
5
B
-5
4
-3
-2
0 1
2.
3 4
un
C
-5
-4
-3
-2
- 1
0 1
2.
3
4
5
D
?
2
-5
4
-3
-2
-1
01
3
4
5
Answer:
do you have a.picture.of the graph?
Step-by-step explanation:
it should.look something like this tho for x>-2
The graph that shows x > -2 is graph B.
What is a graph?A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
In graph B, the line at x = -2 is an open circle, which means that the point x = -2 is not included in the range of the graph. The line to the right of x = -2 shows all the possible values of x that are greater than -2.
In graph A, the shaded region includes the point x = -2, which means that x ≥ -2. This is not what we want because we want x > -2.
In graph C, the shaded region includes the line at x = -2, which means that x ≥ -2. This is also not what we want because we want x > -2.
In graph D, there is not enough information to determine the range of x values that satisfy x > -2.
Therefore, the correct graph is represented by option B.
To know more about the graph follow
https://brainly.com/question/30922456
#SPJ7
Answer the following questions
Answer:
Question 1 : -8/3
Question 2 : 7.62 or unrounded 7.615773106.
Step-by-step explanation:
Question 1:
( 2 , 4 ) ( 5 , -4)
^ ^ ^ ^
x1 y1 x2 y2
Equation : y2 -y1 / x2 - x1
-4-4/5-2 = -8/3
Question 2 :
Equation : a^2 + b^2 = c^2
3^2 + 7^2 = c^2
3^2 = 9
7^2 = 49
9 + 49 = 58
Square root of 58 = 7.615773106.
what is the mean,median,mode and range or the data set 4, 7, 3, 7, 7, 12,
Answer:
the mean is6.7 the mode is 7 and the range is 9
Step-by-step explanation:
Find the volume of the figure. find the volume Volume =
Answer:
Volume = 13,364 cm³
Step-by-step explanation:
Volume of the figure = volume of trapezoid prism
Volume of trapezoid prism = area of trapezoid base × length of the prism
= ½(a +b)h × l
Where,
a = 15 cm
b = 37 cm
h = 25.7 cm
l = 20 cm
Substitute
Volume = ½(15 + 37)25.7 × 20
Volume = 13,364 cm³
PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!
Answer:
12
Step-by-step explanation:
a² + b² = c²
a² + 9² = 15²
a² + 81 = 225
a² = 225 - 81
a² = 144
[tex]\sqrt{a^2} =\sqrt{144}[/tex]
a = 12
A company's sales in Seattle were $330,000 in 2012, while their sales in Portland were $235,000 for the same year. Complete the following statements: a. Seattle's sales were % larger than Portland's. b. Portland sales were % smaller than Seattle's. c. Portland sales were % of Seattle's. Give answers accurate to at least one decimal place.
Answer:
A) Seattle's sales were 40.42% larger than Portland's.
B) Portland sales were 28.79% smaller than Seattle's.
C) Portland sales were 71.21% of Seattle's.
Step-by-step explanation:
Since a company's sales in Seattle were $ 330,000 in 2012, while their sales in Portland were $ 235,000 for the same year, the following calculations must be performed to complete the sentences:
A)
235,000 = 100
330,000 = X
330,000 x 100 / 235,000 = X
33,000,000 / 235,000 = X
140.42 = X
Seattle's sales were 40.42% larger than Portland's.
B)
330,000 = 100
235,000 = X
235,000 x 100 / 330,000 = X
23,500,000 / 330,000 = X
71.21 = X
100 - 71.21 = 28.79
Portland sales were 28.79% smaller than Seattle's.
C)
330,000 = 100
235,000 = X
235,000 x 100 / 330,000 = X
23,500,000 / 330,000 = X
71.21 = X
Portland sales were 71.21% of Seattle's.
The pool table has a height of 7ft. Side one is 18ft and side two is 17 ft. What is the area and perimeter?
Answer:
area = 2,142
perimeter = 70
Step-by-step explanation:
area = length x width x height
a=18 x 17 x 7
perimeter = all sides added together and assuming it is a rectangle...
p=18 + 18 + 17 + 17
Which is the better deal? *
5 gallons of gas for $15.70
11 gallons of gas for $42.00
Answer:
5 gallons of gas for 15.70
Step-by-step explanation:
15.70 divided by 5 is 3.14 while 42 divided by 11 is 3.8
Trying to prepare a budget Grant has done research and found that he spends an average of $178 on his phone/internet/cable service, $203 on his electric bill, and
$320 on his health insurance premium. If he earns $3200 per month, estimate the amount of money he will have after paying these bills each month.
Answer:
$2,499
Step-by-step explanation:
3200 - (178 + 203 + 320)
3200 - 701
2499
Grant will have $2,499 after paying these bills each month
Answer: 2,499
Step-by-step explanation: Subtract expenditures from earnings...
3,200-178-203-320=2,499
so he makes 3,200 and spends 701 each month leaving 2,499
Johnny buys a desk on sale for $300.00. If the regular price
is $450.00, what is the percent of discount?
Answer: 33.33%
This MAY be wrong, but when I calculated it, the total discount came out to 149.985, which I think can be rounded up to 150
frank has a board that is 5/8 yards long he cuts off a piece that is 3/5 the length of the board how long is the piece of the board frank cutt off?
Answer:
Step-by-step explanation:
If the board is 5/8 of a yard, then it is 5/8 of 36 inches (a yard is 36 inches).
5/8 * 36 = 22.5 inches.
Frank now cut's 3/5 of the length of the board. So he is going to cut off 3/5 of 22.5 inches.
(3/5) * 22.5 = 67.5 / 5 = 13.5 inches.
You don't specify what the units should be. I translate this into yards, but I think if you want something else, leave a comment.
13.5 /36 = 0.375 = 3/8 of a yard.
An experiment to compare the tension bond strength of polymer latex modified mortar (Portland cement mortar to which polymer latex emulsions have been added during mixing) to that of unmodified mortar resulted in x = 18.19 kgf/cm2 for the modified mortar (m = 42) and y = 16.87 kgf/cm2 for the unmodified mortar (n = 32). Let m1 and m2 be the true average tension bond strengths for the modified and unmodified mortars, respectively. Assume that the bond strength distributions are both normal.
(a) Assuming that ?1 = 1.6 and ?2 = 1.3, testH0: m1 ? m2 = 0versus Ha: m1 ? m2 > 0 at level 0.01.State the rejection region(s). (If the critical region is one-sided, enter NONE for the unused region. Round your answers to two decimal places.)
z ?
z ?
Compute the test statistic value. (Round your answer to two decimal places.)
z =
State the conclusion in the problem context.
Reject H0. The data does not suggest that the difference in average tension bond strengths exceeds 0.
Fail to reject H0. The data does not suggest that the difference in average tension bond strengths exceeds from 0.
Fail to reject H0. The data suggests that the difference in average tension bond strengths exceeds 0.
Reject H0. The data suggests that the difference in average tension bond strengths exceeds 0.
(b) Compute the probability of a type II error for the test of part (a) when m1 ? m2 = 1.(Round your answer to four decimal places.)
(c) Suppose the investigator decided to use a level 0.05 test and wished ? = 0.10 when m1 ? m2 = 1. If m = 42, what value of n is necessary? (Round your answer up to the nearest whole number.)
n =
(d) How would the analysis and conclusion of part (a) change if ?1 and ?2 were unknown but s1 = 1.6 and s2 = 1.3?
Since n = 32 is not a large sample, it would no longer be appropriate to use the large sample test. A small sample t procedure should be used, and the appropriate conclusion would follow.
Since n = 32 is a large sample, it would be more appropriate to use the t procedure. The appropriate conclusion would follow. Since n = 32 is a large sample, it would no longer be appropriate to use the large sample test. Any other test can be used, and the conclusions would stay the same.
Since n = 32 is not a large sample, it still be appropriate to use the large sample test. The analysis and conclusions would stay the same.
What is Adding functions
Answer:
Adding two functions is like plotting one function and taking the graph of that function as the new x-axis. Points of the second function are then plotted with respect to the new axis. For example, (2, 3) becomes "over 2," "up 3 from the new axis," or (3, f + 2).
Another Example:
To add or subtract functions, just add or subtract the values at each point where it makes sense. If the functions are given by formulas, you can just add or subtract the formulas (it doesn't matter whether you plug in values before or after).
Step-by-step explanation:
Hope this helps. :)
Antoinette buys 6 pounds of
tangerines. She pays with a $10 bill.
How much did she spend?
Answer:
10 = 6 pounds
1.67 = 1 pound
Step-by-step explanation:
Answer:
$1.67
Step-by-step explanation:
Hope its correct have a great day!
What is the mean of the data set that is represented by this data plot?
Answer:
90
Step-by-step explanation:
[tex]\huge\blue{90}[/tex]
90 is the mean of the data set that is represented by this data plotThe length of a rectangle is twice its width.
If the perimeter of the rectangle is 60 m, find its length and width.
Answer:
120 m
Step-by-step explanation:
.
Answer:
length = 20m
width = 10m
Step-by-step explanation:
perimeter = 2 (length + width)
length = 2 * width = 2w
perimeter = 2 (2w +w)
perimeter = 2(3w)
60m = 6w
(divide both sides by 6)
60/6 = w
width = 10m
length = 2w
so length = 2 * 10 = 20m
the perimeter of a rectangle is 18 inches. the length is 5 inches. find the width of the rectangle.
i will give brainliest <3
Answer:
4 inches
Step-by-step explanation:
I need this ASAP!
Solve:
Connie is packing for a trip. She has 17 pairs of jeans. If she has room to pack 6 pairs how many ways can she choose which jeans to take
Answer:12,376
Step-by-step explanation:
Given
Connie has 17 Pairs of jeans
She has to choose 6 pairs out of 17
We know, no of ways to pick r items out of n items is [tex]^nC_r[/tex]
[tex]\therefore \text{No of ways is =}^{17}C_6\\\\\Rightarrow \dfrac{17!}{(17-6)!6!}=12,376\ \text{ways}[/tex]
Need help please show ur work
33 is less than or equal to x
Question options:
33 < x
33 > x
33 ≥ x
33 ≤ x
Please explain please also, thanks! :)
Answer:
33 ≤ x
Step-by-step explanation:
≤ means less than or equal to, you can see < showing less than, and the _ meaning equal to.
The product of 8 and four more than a number
The algebraic expression is:
Answer:
8(n+4)
Step-by-step explanation:
Find the approximate length of the bolded arc.
Answer:
Step-by-step explanation:
the figure below is a net for a triangular prism (Help)
Answer:
368 in²
Step-by-step explanation:
Surface area of the triangular prism is the sum of the area of each net = 2(area of two triangle) + 2(area of two similar rectangles) + area of rectangle
= 2(½*bh) + 2(L*W) + (L*W)
Surface area = 2(½*5*7) + 2(15*8.6) + (15*5)
= 35 + 258 + 75
= 368 in²
A line goes through the points (−7,−8) and (7,8). Find its slope.
Answer:slope = "rise over run" (the change in y coordinates divided by the change in x coordinates) =
(8--7)/(3-7) = 15/-4 = -15/4
Step-by-step explanation: have a nice day
y=(x+1)^2+2
plot five points
Answer:
(−3,6)
(−2,3)
(−1.2)
(0,3)
(1,6)
Step-by-step explanation: