Answer:
50 % alcohol solution = 10 millimetres
30 % alcohol solution = 90 millimetres
Step-by-step explanation:
two equations can be derived from this question
x + y = 100 equation 1
0.3x + 0.5y = 100 x 0.32 = 32
0.3x + 0.5y = 32 equation 2
where :
x = 30% alcohol solution
y = 50% alcohol solution
multiply equation 1 by 0.3
0.3x + 0.3y = 30 equation 3
subtract equation 3 from 2
0.2y = 2
y = 10
substitute for y in equation 1
x + 10 = 100
x = 100 - 10
x = 90
solve 3x by 4 - 2x+5 by 3 = 5 by 2
Answer:
50
Step-by-step explanation:
The given equation is,
→ 3x/4 - (2x + 5)/3 = 5/2
→ 3x × 3 - 4(2x +5)/12 = 5/2
→ 9x - 8x -20/12 = 5/2
→ (x - 20)/12 = 5/2
→ x - 20 / 6 = 5
→ x - 20 = 30
→ x = 20 + 30
→ x = 50
• Hence the value of x is 50 .Answer:
x=50
Step-by-step explanation:
In order to select new board members, the French club held an election. 30% of the 20 members of the club voted. How many members voted?
Answer:
6
Step-by-step explanation:
30%*20 = 6
Ferris wheel diameter was 250 feet. Calculate it’s radius. If 40 steel rods were joined at the centre find the total steel required?
Answer:
785.5ft
Step-by-step explanation:
Given data
Diameter= 250ft
Radius= D/2= 250/2= 125ft
The total steel required can be found from the Circumference
C= 2πr
C= 2*3.142*125
C= 785.5ft
Hence the total steel required is 785.5ft
Which of the following can cause market failure?
too much mobility
too much competition
not enough information
too much information
Answer: C
Step-by-step explanation: not enough information
6c + 7c + 5y + 2c + 7y
Thank u ahead of time:)
Answer:
15c+12y
Step-by-step explanation:
6c + 7c + 5y + 2c + 7y
13c+2c +12y
15c+12y
have a great day!
There is a photo. No explanation needed just answer thank you
Can someone help me out my grads are bad
Answer:
5/10 + 1/10 = 6/10 or if you simplify it 3/5
Step-by-step explanation:
1/2 = 5/10
1/10 = 1/10
5/10 + 1/10 = 6/10
6/10 = 3/5
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
Answer:
1/2 + 1/10 = 5/10+ 1/10 = 3/5
Step-by-step explanation:
Find the LCD of 2 and 10 (10)
Add the two together (6/10)
Reduce (3/5)
Have a good day :)
find the sum of the numbers if their sum is -11 and their difference is 41
Answer:
-52
Step-by-step explanation:
-11 -14 are same sign is equal to plus ,,so that is answer -52 ...
Answer:
- 11 - 41
-52 is the right answer....
Keisha buys 2/3 dozen bagels for $4.80.
Answer:
Im sorry but your going to have to provide more information for me to answer my G!
Step-by-step explanation:
A random sample of internet subscribers from the west coast of the United States was asked if they were
satisfied with their internet speeds. A separate random sample of adults from the east coast was asked the same
question. Here are the results:
A market researcher wants to perform a x2 test of homogeneity on these results.
What is the expected count for the cell corresponding to east coast subscibers who
responded "yes"?
You may round your answer to the nearest hundredth.
Answer:
19.2
Step-by-step explanation:
khan
The expected count for the cell corresponding to east coast subscribers who responded "yes" is 19.2.
What is Statistics?Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.
We need to first calculate the expected frequencies for each cell under the assumption that the null hypothesis of homogeneity is true.
The null hypothesis of homogeneity assumes that the proportion of internet subscribers satisfied with their internet speeds is the same on both the east and west coasts of the United States.
To calculate the expected frequencies, we can use the formula:
Expected frequency = (row total x column total) / grand total
For the cell corresponding to east coast subscribers who responded "yes":
Expected frequency = (row total for east coast x column total for "yes") / grand total
= (80 x 48) / 200
= 19.2
Therefore, the expected count for the cell corresponding to east coast subscribers who responded "yes" is 19.2.
To learn more on Statistics click:
https://brainly.com/question/30218856
#SPJ2
Help me please help, me help me help me help me help me help me help me help me
A- x=A
B- x=27
C- x=3
D- x=4
E- x=17
ANSWER- A and C
Hope this Helped! :T
help please help help help
Answer:
area = 32
perimeter = 30
Step-by-step explanation:
Formulas:
Area of a parallelogram: A = bh
Perimeter of a parallelogram: P = 2 ( b + s )
Where h = height s = slant height and b = base length
Define:
b = 8
h = 4
s = 7
Plug in given values into formulas and calculate
A = (8)(4)
8 * 4 = 32
A = 32
P = 2 ( 8 + 7 )
8 + 7 = 15
2(15) = 30
P = 30
Let’s figure out one more adjustment for the butterscotch chip cookies. The butterscotch chip cookie recipe calls for 12 ounces of chips for every 2 cups of flour. How many ounces of chips are needed if 3 cups of flour are added?
Remember to keep your units consistent.
I believe it would 18 ounces of chips for 3 cups of flour. If you take half of 12 ounces then you get 6 ounces per cup of flour. Adding 6 ounces to the 12 would get us the total of the 18 ounces.
-y = 7x+5 written in standard form
Answer:
7x+y=-5
Step-by-step explanation:
-y=7x+5
7x+y=-5
Hey guys I need help please show your work worth 20 points
-8x-14>2
-
Answer:
x > - 2
Step-by-step explanation:
- 8x - 14 > 2
- 8x - 14 + 14 > 2 + 14
- 8x > 16
- 8x ÷ - 8 > 16 ÷ - 8
x > - 2
could someone just edit this and show me what u got by attaching a picture pls????? I NEED HELP IMMEDIATELY!!!! PLS HELPP. PLS DO NOT GUESS EITHER BUT PLS CMON AND HELP ME PLSSS
Answer: answers down below in the picture
lol i tried my best placing the dots and labeling .. sorry.. if you don't understand pls let me know
Photo Attached :)
I hope I did it correctly, just a little tedious.
the diameter is a circle is 16in. Find it’s circumference in terms of π.
C= ________in
According to the question,
Diameter of circle = 16 inWe are asked to calculate it’s circumference in terms of π.
★ Circumference of circle = 2πr
___________________________________
Let us first calculate the radius of the circle.
→ Diameter = 2 × Radius
→ 16 in = 2r
→ r = 16 in ÷ 2
→ r = 8 in
___________________________________
Substituting values in the formula of circumference,
→ C = 2πr
→ C = (2 × π × 8) in
→ C = 16π in
Therefore, 16π inches is the required answer.
There is just enough water in the container to exactly fill the
hemisphere. The container is held so that the point of the cone
is down and the altitude of the cone is exactly vertical. Find the
height of the water in the cone. Round to the nearest tenth.
Answer: hello your question is Vague hence I will provide a general solution. in which you can input your values into and get your answer.
answer = h = 3 ( V / π r^2 )
Step-by-step explanation:
The volume of a cone is exactly the volume of a hemisphere, given that the radius and height are the same .
The height of the water in the cone = height of the hemisphere / height of cone ( given that the water completely fills the hemisphere )
∴ h = 3 ( V / π r^2 )
plz solve this question mhanifa
Answer:
Option BStep-by-step explanation:
Given:
4 - 3iConjugate of the given number is:
4 + 3iDivide the given number by its conjugate:
(4 - 3i) / (4 + 3i) = (4 - 3i)(4 - 3i) / (4 + 3i)(4 - 3i) =(16 + 9i² - 24i) / (16 - 9i²) = (16 - 9 - 24i) / (16 + 9) = (7 - 24i) / 25 = 7/25 - 24i/25Correct choice is B
The circumference of a circle is 100.48 feet. What is the circle's diameter?
Answer:
631.334460 ft
Step-by-step explanation:
i think
Answer:
32 feet
Step-by-step explanation:
Since we know that the formula for finding circumference is C = π · d, and π is equal to 3.14, we reverse the formula so it fits what information we have.
We know that C = 100.48 and we also know that π = 3.14 so all we have to find is the diameter.
To do this, you divide 100.48 by 3.14 to get 32 feet as your final answer.
PLEASE HELP ASAP!!
What is the vertex of the graph and is the vertex a maximum or minimum?
А. (1, 3); maximum
B. (-1,-1); minimum
C. (3, 1); maximum
D. (0, 2); minimum
(A)
Step-by-step explanation:
The vertex is located at (1, 3) and it's a maximum.
Savannah has a package of 20 candies with an equal number of candies colored white, blue, orange, purple, and yellow. If Savannah selected a yellow candy the first time, what is the
probability that she will randomly select, without replacement, another yellow candy?
A 3/19
B 1/5
C 4/19
D 1/4
Answer:
A 3/19
Step-by-step explanation:
There are 4 candies of each color. If you take out one yellow, you not only have three yellows; you have 19 candies. 3/19 is the answer.
Answer:
3/19
Step-by-step explanation:
There is an equal number of colored candies, in which there are 20 candies in all, and 5 colors:
20/5 = 4
Each color has 4 candies.
Savannah was able to obtain a yellow candy, and she does not replace it:
4/20 removing one yellow candy = 3/19
A) 3/19 is her chance of getting another yellow.
please help! 20 points for answering. if you guess or just write something to just get points i will make sure your account gets banned. thank you!
It's the one with the greater than or less than sign (the second option) because Logan wants to make money greater than or less than $1000
Place an X in the table to match the diameter of each circle with its approximate area.
Use 3.14 for 11.
7
314 m?
706.5 m?
1,256 m
2,122.64 m2
30 m
40 m
52 m
Answer:
bjbjy
Step-by-step explanation:
The formula for the area of a triangle is 1A bh2=, where b is the length of the base and his the height. Rearrange the formula to isolate h
Answer:
h = 2A/b
Step-by-step explanation:
Area of a triangle, A = 1/2bh
Where,
b = base of the triangle
h = height of the triangle
Rearrange the formula to isolate h
A = 1/2bh
Multiply both sides by 2
2 * A = 2 * 1/2bh
2A = bh
Divide both sides by b
2A / b = bh / b
2A / b = h
Therefore,
h = 2A/b
One of the base angles in an isosceles triangle is 75 degrees, then its exterior angle is
A. 105 degrees
B.75 degrees
C. 285 degrees
D, 30 degrees
Answer:
105 degrees
Step-by-step explanation:
Supplementary angles add up to 180 degrees.
You just gotta subtract your given (in your case 75) from 180 to get your answer my guy
The order of numbers is not important in ____________ of rational numbers.
Answer:
addition?
Step-by-step explanation:
Two functions are shown. f(x) = 3x+1 g(x) =-3/2X-7 What is the value of x when f(x) = g(x)
Answer:
-1.778
Step-by-step explanation:
The two lines cross at the point (-1.778,-4.333), but the x value is -1.778
Hope this helps
Closest to the shaded area
Answer:
B) 30.9
Step-by-step explanation:
So, because the radius is 6, we know the diameter is 12, meaning we know each side is 12, so the total area of the square is 144.
To find the area of a square we should use pi(r) ^2 which is pi(6) ^2 which is 113.09. to find the area of the shaded are we would subtract these. 144- 113.09 this gets us 30.91, this is closest to B) 30.9
I need some help finding the volume of a sphere with a diameter of 18.6cm. The website says the answer I got from my calculator was wrong! Help would be greatly appreciated!
Answer:
V = 3,367.6 cm³
Step-by-step explanation:
Diameter of sphere (D) = 18.6 cm
radius (r) = ½(18.6) = 9.3
π = 3.14
Formula for volume of a sphere = ⁴/3πr³
Plug in the values
V = ⁴/3 × 3.14 × 9.3³
V = ⁴/3 × 3.14 × 804.357
V = (4*3.14*804.357)/3
V = 3,367.57463
V = 3,367.6 cm³ (nearest tenth)