Kaylie needs 3 pounds of the 20% nickel metal to combine with 6 pounds of the 80% nickel metal to form an alloy containing 60% nickel.
To solve the problem, we can use the concept of weighted averages. The first step is to determine the amount of nickel in each metal before they are combined.
For the 20% nickel metal, 20% of the metal is nickel. Therefore, the amount of nickel in x pounds of this metal is 0.2x.
For the 80% nickel metal, 80% of the metal is nickel. Therefore, the amount of nickel in 6 pounds of this metal is 0.8(6) = 4.8 pounds.
Next, we can use the weighted average formula to determine the amount of nickel in the alloy:
0.2x + 4.8 = 0.6(x + 6)
Simplifying the equation:
0.2x + 4.8 = 0.6x + 3.6
0.4x = 1.2
x = 3
Therefore, Kaylie needs 3 pounds of the 20% nickel metal to combine with 6 pounds of the 80% nickel metal to form an alloy containing 60% nickel.
In summary, to determine the amount of metal-containing 20% nickel needed to combine with 6 pounds of metal containing 80% nickel to form an alloy containing 60% nickel, we used the concept of weighted averages and found that Kaylie needs 3 pounds of the 20% nickel metal.
To know more about nickel refer here:
https://brainly.com/question/14221416#
Find the length of the segment indicated. Round your answer to the nearest tenth if necessary
Answer:
16
Step-by-step explanation:
Hi there,
Since we know that 16 and x represents the radius of the circle, it can be determined that they are the same length. Therefore, the length of the segment indicated is 16.
I am quite sure I did this question correctly. Please let me know if I made a mistake.
Cheers.
Help MOI Again PLEASE lol
Answer:
-5a + 20a +-4a - -6= -16
Answer- a= -2
Step-by-step explanation:
Hope this helps!
Answer:
-2
Step-by-step explanation:
-5a+20a+-4a_-6=-16
20a-9a+6=-16
11a+6=-16
11a=-16-6
11a=-22
a=-22/11
a=-2
Which selection best indicates the slices that can be made from from the right triangular prism?
Question 1 options:
triangle, trapezoid, rectangle, quadrilateral, pentagon
triangle, trapezoid, quadrilateral
triangle, trapezoid, hexagon
triangle, quadrilateral, hexagon
Answer:
triangle, trapezoid, quadrilateral
Step-by-step explanation:
you'll see it if u look closer
Nathan found two worms in the yard and measured them with a ruler. One worm was 4/5 of an inch long. The other worm was 1/10 of an inch long. How much longer was the longer worm? Write your answer as a fraction or as a whole or mixed number.
please help and thank you even if you dont
Answer:
7/10
Step-by-step explanation:
4/5 is greater than 1/10
I converted 4/5 into 8/10 because I multipled the numerator and denominator by 2.
Then I subtracted 8/10 from 1/10 and got 7/10
The graph shows information about the lion population at a safari park. Lions were introduced in the park in 2010. In 2012, the park has a population of 32 lions. A year later, in 2013, the park has 128 lions. Write an exponential function that models this situation. Let X represent the number of years since 2010 and let f(x)represent the number of lions.
Answer:
never gonna
Step-by-step explanation:
give you up,
Let you down,
make you cry
Run around and desert you
Ellie buy a lawn mower online for $33. If shipping and handling are an additional 30% of the price ,how much shipping and handling will Ellie pay?
Answer:
$42.90
Step-by-step explanation:
Calculate what 30% of 33, and then add that answer to $33+$9.9=$42.90
Ballio's family traveled 2/7 of the distance to his uncle’s house on Saturday. They traveled 2/5 of the remaining distance on Sunday. What fraction of the total distance to his uncle’s house was traveled on Sunday?
Answer:
4/35
Step-by-step explanation:
10/35-14/35=-4/35
The solution to 13x = 78 is x =___
Only input whole number and no links!
Answer:
6
Step-by-step explanation:
Answer:
the answer is 6
Step-by-step explanation:
bc 78 divided my 13 equals 6
i took the exam
Please answer this correctly and explain how you did it.
Answer:
x = 128
Step-by-step explanation:
The angles are across form each other, meaning that they are the same angle. I hope this explains it enough, if not I can add more.
The circle shown below is centered at (0, 0) and passes through the point P located at (2, 0).
Answer:
1 , -5 I just did this one lol
Answer:
1, -5 so basically it's B
I’ll give brainliest if you help me
Answer:
B
Step-by-step explanation:
Answer:
b i copy cause i dont know
Step-by-step explanation:
survey asked eight students about their scores on a history test and whether they studied for the test. The table shows the results of the survey.
Test Scores
Studied
Did Not Study
88
34
90
67
86
80
96
59
Which statements about the data sets are true? Check all that apply.
The mean absolute deviation for the group of students who studied is 12.
The mean absolute deviation for the group of students who did not study is 13.5.
The data for the group that studied are more spread out than the data for the group that did not study.
The data for the group that did not study are more spread out than the data for the group that studied.
The data for the group that studied are more clustered around the mean than the data for the group that did not study.
The data for the group that did not study are more clustered around the mean than the data for the group that did study.
Answer:The data for the group that did not study are more spread out than the data for the group that studied.
The data for the group that studied are more clustered around the mean than the data for the group that did not study.
The data for the group that did not study are more clustered around the mean than the data for the group that did study.
Step-by-step explanation:
Answer:
Answer:The data for the group that did not study are more spread out than the data for the group that studied.
The data for the group that studied are more clustered around the mean than the data for the group that did not study.
The data for the group that did not study are more clustered around the mean than the data for the group that did study.
Step-by-step explanation:
Which is the correct label of the parallel lines?
Answer: a
Step-by-step explanation: a||b is the correct answer because the lable under each ray is a a and b a be and since they parallel the two "||" represent it.
PLEASE HELP ASAP!!!
Answer:
its 17degree as it is supplement to 163
(CORRECT ANSWER GETS BRAINLIEST! 20 POINTS!!!)
What is the quotient of the division below?
2599 divided by 9
288.7
288.ModifyingAbove 7 with bar
288.8
288.ModifyingAbove 8 with bar
Sophie is 3.5 years younger than her brother. She knows that when she is b years old, her brother is b+3.5 years old. Right now, Sophie is 11.5 years old.
How old is Sophie's brother?
Write your answer as a whole number or decimal
HElP what There is a $20 shirt and it is 1/3% off
Answer:
13.4 left
Step-by-step explanation:
$6.67 if you need to round, if not then $6.66
ก
6
Which expression is equivalent to
(7)
?
-
Answer:
A
Step-by-step explanation:
will give brainliest
one side of a trapezoid is extended and the dotted line forms a right angle with the extended line. use given information to find measurement of angle p.
answers are:
A. 30°
B. 45°
C. 60°
D. 120°
Answer:C
Step-by-step explanations:
because its acute duhhh
Marie is bringing bagels and cream cheese to school as a birthday snack for her class. The cost of b bagels and c packages of cream cheese is 0.85b+2.5c dollars. Marie is bringing 30 bagels and 2 packages of cream cheese.
What price did Marie pay for the bagels and cream cheese?
Answer:
30.5 is the answer
Step-by-step explanation:
price of 1 bagels=0.85
price of 1 cream cheese=2.5
30*0.85+2*2.5
25.5 +5
30.5
just multiply with the number of thing by the price of 1 thing
i do not understand this
Answer:
10. 0.20
11. country
12. Hip-Hop and R&B, 3/10
13. Rock, 0.05
Step-by-step explanation:
10. for the boys, pop= 10% and country= 10%. add them together to get 20% and write that as a decimal, which is 0.20
11. 1/5 of 100% is 20%, and 20% of girls chose country as their favorite
12. Hip-Hop and R&B are the favorites for the most boys at 30% each. write that as a fraction of 100% which is 3/10
13. Rock is the least favorite among the girls at 5%, and 5% as a decimal is 0.05
What is the value of this expression
6 + 24 +3.0.5(42)
Brainliest if you can answer question 12 right :)
My cousin needs help with this one to and if you ask why i just dont help her it's cause I dont know this she is to grades higher then me
Answer:
Step-by-step explanation:
tell her that she needs to put the triangle in quadrant 1
so you want to rotate it clockwise 180 and to do that you need
here is the answer
( 0,1 ) ( 5,2 ) ( 3,4 )
The table shows how much Jose earns at his part-time job. At the rate he is paid, how much
would Jose make if he worked 9 hours?
Elena would like to know the average height of seventh graders in her school district. She measures the heights of everyone in a random sample of 20 students. The mean height of Elena's sample is 62 inches, and the MAD (mean absolute deviation) is 2 inches. SELECT ALL TRUE STATEMENTS.
a. The median height of the sample must be between 59 and 63 inches.
b. Another random sample of 20 students is likely to have a mean between 57 and 65 inches
c. The mean height of these 20 students is likely to be the same as the mean height of all students in the district.
d. The mean height of these 20 students is likely to be the same as the mean height of a second random sample of 20 students.
e. Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
The statements that are true are:
- Another random sample of 20 students is likely to have a mean between 57 and 65 inches
- Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
Options B and E are the correct answer.
What is a mean?It is the average value of the set given.
It is calculated as:
Mean = Sum of all the values of the set given / Number of values in the set
We have,
a.
The median height of the sample must be between 59 and 63 inches.
This statement cannot be determined based on the given information.
The MAD provides information about the variability of the data, but not necessarily about the location of the median.
b.
Another random sample of 20 students is likely to have a mean between 57 and 65 inches.
This statement is likely to be true.
Since the sample mean is 62 inches and the MAD is 2 inches, it is reasonable to expect that another random sample of the same size would have a similar mean, within a few inches.
c.
The mean height of these 20 students is likely to be the same as the mean height of all students in the district.
This statement is uncertain.
The sample mean can be a good estimate of the population mean if the sample is representative, but we cannot be certain without more information about the sampling method.
d.
The mean height of these 20 students is likely to be the same as the mean height of a second random sample of 20 students.
This statement is uncertain.
The mean of a second random sample of the same size could be different due to random sampling variation.
e.
Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
This statement is likely to be true.
Generally, larger sample sizes tend to provide more accurate estimates of population parameters, as they are less affected by random sampling variation.
Thus,
The statements that are true are:
- Another random sample of 20 students is likely to have a mean between 57 and 65 inches
- Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
Learn more about mean here:
https://brainly.com/question/23263573
#SPJ7
Which American mathematician realized that words, sounds, and images could all be represented using a binary code
Answer:
Claude Shannon. I think, but I'm not sure.
Step-by-step explanation:
Need with question b
Answer:
basketball
Step-by-step explanation:
bc the dots are more spread out :)
I need help with this question no addling links or doing it just for points i really don't want that stuff if i see it i will report it
SOMEONE HELP ME !
WILL GIVE BRAINLISIT
directions :Use the properties and mental math to solve. Write your answer in simplest form.
( properties : comm and assov)
Answer:
Step-by-step explanation:
10. 11 4/10 and 11. 6 4/8