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.
Theo purchased an are rug for his dorm room. The dimensions of the rug are 8 feet by 9 feet. What is the area of Theo's rug?
Answer:
72 feet
Step-by-step explanation:
8 feet by 9 feet well first you have to notice that the word by means to multiply so you have to multiply 8x9
so
8x9=72feet of the area
The principal P is borrowed and the loan's future value A at time t is given. Determine the loan's simple interest rater.
P = $9000.00, A = $12150.00, t = 5 years
% (Round to the nearest tenth of a percent as needed.)
7÷94 using repeated subtraction anyone know the answer
Answer:
12 remainder 3
Step-by-step explanation:
94- 7=87
87-7=80
80-7=73
73-7=66
66-7=59
59-7=52
52-7=45
45-7=38
38-7=31
31-7=24
24-7=17
17-7=10
10-7=3
We were able to subtract 7 from 94 12 while times! We ended up with a remainder of 3, our answer can be written as 12 R 3 or if you wnat it in decimal form its or 13.43
Please help. Timed!!
Answer:
68°
Step-by-step explanation:
Since angle 1=68° and angle 5 is a corresponding angle, thus, angle1=angle 5
therefore angle 5 is 68°
if you have 10 gums and then you take out 5 how much will you have left
Answer:
10, cos gums can't be removed
Answer:
5
Step-by-step explanation:
this is a standard subtraction problem:
10 - 5 = 5
So you have 5 gums left
hi guys what is and can u please do the method 4050 divided by 100
Answer:
40.5
Step-by-step explanation:
what i do is I divided first by 10. because 100 is 10x10.
so 4050 divided by 10 is 405.
405 divided by 10 is 40.5
4050 divided by 100 = 40.5
What is 103 % of 134?
Answer:
138.02
Step-by-step explanation: mark me brainlist?
Researchers studying the relationship between honesty, age, and self-control conducted an experiment on 160 children between the ages of 5 and 15. The researchers asked each child to toss a fair coin in private and to record the outcome (white or black) on a paper sheet, and said they would only reward children who report white. Half the students were explicitly told not to cheat and the others were not given any explicit instructions. Differences were observed in the cheating rates in the instruction and no instruction groups, as well as some differences across children's characteristics within each group.
(a) Identify the population of interest and the sample in this study.
(b) Comment on whether or not the results of the study can be generalized to the population, and if the findings of the study can be used to establish causal relationships.
Answer:
A) Population of interest = children between the ages of 5 and 15
Sample = 160 children between the ages of 5 and 15.
B) Yes, the results of the study can be generalized to the population if the sample is randomly selected and represents the entire population.
Yes, the findings can be used to establish causal relationship because the study is just an experiment.
Step-by-step explanation:
A) Population of interest = children between the ages of 5 and 15
Sample = 160 children between the ages of 5 and 15.
B) Sample size is 160 which is above 30.
Thus, we can say;
Yes, the results of the study can be generalized to the population if the sample is randomly selected and represents the entire population.
Yes, the findings can be used to establish causal relationship because the study is just an experiment.
Katie needs 3/4 cup sugar to make cookies. She only has 1/3. How much more sugar does Katie need?
Answer:
I think it is 5/12 but might be wrong
Step-by-step explanation:
Subtracted 1/3 from 3/4
A research analyst for a car rental agency found that the probability distribution function for the age of the rental car (in years) is a straight line. The line decreases from the point (0, h) to the point (10, 0). None of the rental cars are older than 10 years. Enter your answers as decimals. 7(a). What is the height for the line when the age of the car is zero?
Answer:
10 years
Step-by-step explanation:
Given
Decline from (0,h) to (10,0)
See attachment for graph
Required
Determine the age when height = 0
The function of the graph is represented as: (age, height)
So, we need to read from the graph the corresponding value of age (on the x-axis) when height = 0 (i.e. the y-axis)
From the attached graph;
[tex]age = 10[/tex] when [tex]height = 0[/tex]
Hence, the age of the car is 10 years
Find the gcd of 30,45,75
Answer:
gcd is 15
have a good day ahead
Answer:
15
Step-by-step explanation:
each number is divisible by 15
Let X and Y be independent Bernoulli random variables with parameters 0.2 and 0.3, respectively. Find the distribution of X Y. List all possible values that X Y can take. Write your answer as a comma-separated list ordered from smallest to largest value. possible values: List the probabilities that X Y takes each of the values. Write your answer as a comma-separated list giving the probabilities in the same order as in (a)
Answer:
a) 0 , 1
b) 0.56 , 0.06
Step-by-step explanation:
X = 0.2
Y = 0.3
Find the distribution of X + Y
a) All the possible values of X + Y
The possible values of X + Y are ; 0,1
b) The probabilities that X + Y takes each of the values
P(X+Y=0 ) = ( 1-0.2 )*(1-0.3) = 0.56
P( X +Y = 1) = 0.2*0.3 = 0.06
Given the figure below, find EF if CA = (6n) and EF = (n + 8)
Answer:
[tex]EF = 12[/tex]
Step-by-step explanation:
Given
[tex]CA =6n[/tex]
[tex]EF= n + 8[/tex]
Required
Find CN
From the attachment:
[tex]EF = CD\ and\ CD = DA[/tex]
Where
[tex]CA = CD + DA[/tex]
This means that:
[tex]CA = CD + CD[/tex]
[tex]CA = 2CD[/tex]
or
[tex]CA = 2*EF[/tex]
This gives:
[tex]6n = 2*(n+8)[/tex]
Open bracket
[tex]6n = 2n+16[/tex]
Collect anf simplify like terms
[tex]4n = 16[/tex]
[tex]n= 4[/tex]
So:
[tex]EF= n + 8[/tex]
[tex]EF = 4 + 8[/tex]
[tex]EF = 12[/tex]
Given f(x) = 5x4 – x2 + 6x – 1. What is Limit of f (x) as x approaches negative 1?
–3
–13
–25
–29
Answer:
-3
Step-by-step explanation:
The limit of the given function f(x) = 5[tex]x^{4}[/tex] – x2 + 6x – 1 approach negative 1 will be -3 so correct option will be (A).
What is limit?Limit, a nearness in mathematical notion, is largely used to give values to some functions at locations that were usually not given or defined, in a manner consistent with neighboring values.
In another word, limit is a mathematical concept in which we find out the value of any function at a point by its adjacent very close point.
Because the value of that function at that point doesn't define.
For example, limits tend to 0 of sine x, limits tend to infinite of cosx.
Given that the function
5[tex]x^{4}[/tex] – x2 + 6x – 1
Limit is from x is tends to -1
[tex]\lim_{x \to \-1} f(x)[/tex] = 5(-1)⁴ - (-1)² +6(-1) -1
⇒ -3 hence it will be the correct answer.
For more about limits
https://brainly.com/question/12207558
#SPJ5
Solve 3≥y−2. Graph the solution. The solution is
Answer:
y ≤ 5
Step-by-step explanation:
too lazy to explain :/
I need help if you are correct I will mark you as brainlest
What is { 1 + 7 - 6 + 99 }
1 + 7 - 6 + 99 = 101
Step-by-step explanation:
7 + 1 = 8
8 - 6 = 2
99 + 2 = 101
Hope to be brainliest! #SpreadTheKnowledge
Answer:
101
that was easy:D
mark me as brainliest plz
GIVING BRAINY AND EXTRA PTS NO LINKS GIVE EVIDENCE
Answer:
60
Step-by-step explanation:
I think that is the best choice sorry if i got it wrong.
Answer:
60 degrees
Step-by-step explanation:
Angle 1 is already 55 degrees, if you move the y line 5 degrees clockwise then it equals 60 degrees. Angle 1 and 3 are vertical angles so they are equal, if angle 1 is 60 degrees after we move the line then angle 3 is also 60 degrees
The graph of y = f(x) is shown below. Find all values of x for which f(x) > 0.
Answer:
from 2 to 6
or x [2,6]
I hope it's right
Answer please and explain
Answer:
Its about 678.584
Step-by-step explanation:
First plug in your given info so put 6 for the r and 6 for thr h. the r stands for radius and the h stands for hight. Then solve for 6 squared which is just 6*6 which is 36 then multiply that by 6 to get 216. then multiply 216 by pie to get your answer.
If you need further explanation just comment on this for help
Please help me! NO sites or links please!
xoxo
I WILL GIVE YOU BRAINERLEST AND A LIKE
The area of a triangle is 20 square feet.
What are the height and base of the
triangle?
what expressions are solutions to the equation 3/4x = 15?
Answer:
x = 20
Step-by-step explanation:
solve for x by simplifying both sides of the equation, then isolating the variable
round off 421 562 to the nearest 5
Answer:
422,000
Step-by-step explanation:
Hope this helps!
:)
How many sides does a polygon have if the sum of the interior angles is 3420
Answer: 21 sides
Step-by-step explanation: (n-2)=3420 you should divide each side by 180
I will give extra points please help
Answer:
z is less than 3/4
Step-by-step explanation:
Find lateral surface
area of the play tent.
h = 4 in
14 in
5 in
5 in
W
6 in
Answer:
224 in.²
Step-by-step explanation:
The tent has a shape of a triangular prism. So, we are looking for the Lateral surface area of a triangular prism.
Lateral surface area of a triangular prism = Perimeter of base × height of prism
Perimeter of base = 5 + 6 + 5 = 16 in.
Height of prism = 14 in.
Plug in the values
Lateral Surface Area = 16 × 14 = 224 in.²
Need help on this please
Answer:
x²+y²=4
Step-by-step explanation:
x²+y²=4
URGENT (WILL GIVE BRANLIEST) whats 1 + 1?
Answer:
2
Step-by-step explanation:
1 + 1 = 2
Have a nice day!
and can I maybe have brainliest?
Answer:
1+1=2
Step-by-step explanation:
hold up one finger then add another and it equals two: )
Hope this helps!
Have a great day!
- Hailey
convert 0.5t5kg5hg to kilogram
Answer:
505.5kg
Step-by-step explanation:
To convert 0.5t5kg5hg to kilogram, first we need to convert 0.5t and 0.5hg to kg as shown;
1t = 1000kg
0.5t = 0.5 *1000
0.5t = 500kg
Similarly
1hg = 0.1kg
5hg = 5 * 0.1
5hg = 0.5kg
Adding up;
0.5t5kg5hg = 500kg+5kg+0.5kg
0.5t5kg5hg = 505.5kg
Hence the conversion to kg is 505.5kg