Answer:
The answer would be 10^2 power.
How many mg of a metal containing 38 percent nickel must be combined with 5 mg of pure nickel to form an alloy containing 68 percent nickel? Which of the following equations could be used to solve this?
Answer:
the Answer is C
Step-by-step explanation:
The metal needs to be 16/3 mg in weight to get the required alloy.
We can use the third equation,
(a(0.38) + 5(1.00))/(a+5) = 68/100
to solve the problem.
What do we mean by Percentage?A percentage is a ratio where a number is shown as a fraction with respect to 100 parts of it. To remove the percentage sign we divide the number by 100.
How do we solve the given problem?We are asked to mix a certain quantity of metal in mg containing 38 percent of nickel to 5 mg of pure nickel such that the new alloy contains 68 percent of nickel.
Let the quantity of metal taken to be 'a' mg.
∴ Nickel provided by the metal is 38% of a,
or, (38/100)*a
or, a(0.38)
We took 5 mg of pure nickel so it is 100 percent pure,
∴ Nickel in the alloy from pure nickel = 100% of 5
or, (100/100)*5
or, 5(1.00)
Total weight of the alloy = a + 5
Total nickel in the alloy = a(0.38) + 5(1.00)
We are said that the alloy constitutes 68 percent of nickel,
∴ (a(0.38) + 5(1.00))/(a+5) = 68%
or, (a(0.38) + 5(1.00))/(a+5) = 68/100
This is the equation needed to find the quantity of metal used to make the alloy. It is the same as option 3.
On solving the equation we get that the required quantity of the metal is 16/3 mg.
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A dot plot is shown
If the quantities 3 and 4 are added to the data set, how would the distribution be affected?
For every 20 grams of fat, 180 calories are added to a serving size of food.
How many calories are added with 4 grams of fat?
Answer:
36 Calories
Step-by-step explanation:
first find what is added with ONE gram of fat.
do that by dividing
180/20
=9
then multiply by 4
9*4
=36
:)
DONT REPORT MY QUESTION ITS FOR MY SCIENCE Experiment
would any of you wonderful people here be interested in answering a few questions on this go.ogle forms quiz....
Answer:
nah am good thanks anyway
PLS HELP ME ASAP THE PROBLEM IS IN THE PICTURE! <3
Answer:
5 people each get 2 bags of ice cream or 2 people each get 5 bags of ice cream..
Step-by-step explanation:
What is the area of the object above? (Picture attached)
Answer:
155 cm
rectangle 1: 5x7 = 35
rectangle 2: 8x15 = 120
35 + 120 = 155 cm
Step-by-step explanation:
Find the volume of a cylinder. Round your answer to the nearest tenth. Do not add a comma.
B = 135.6 ft2
h = 11.2 ft
Answer:
Step-by-step explanation:
Base -- find the radius
radius -- 67.8 (135.6^2 /2)
h=11.2
Volume = 2385.59
2385.60
Can sum1 help me with this asap pls :)
is this wrong?? if it is pls help me choose the correct answer
(choose the answer that best corrects the misplaced modifier in each sentence. )
Can u plss help (plss no links) will give brainliest :)
Answer:
A) The range of donation amounts in the fall was $15
Step-by-step explanation:
It is A because if you do 40 minus 25 it is 15. In the Fall Fund-raiser.
Answer:
hiiiiiiiii
Step-by-step explanation:
uhmm...help please :< i'll give brainliest to whoever answers all three
1. 57 is the constant rate of change
2. The ratio for Ms. Bojorquez is 32:28 which simplified is 8:7. The ratio for Ms. William is 104:98 which simplified is 52:49. So they are not equivalent ratios.
3. No, it will take almost 10 minutes.
Hope this helps!!
On some graph paper, graph these points in a coordinate plane: (-2, 3), (2, 3), (2, -3), (-2, -3). Connect all the points. Describe the figure that you see.
plz no links
Select the correct location on the graph.
Identify the cluster in the data.
Answer: (5,7) (5,8)
Step-by-step explanation:
Answer: The 2nd choice
X axis: Between 3 and 6
Y axis: Between 7 and 9
Step-by-step explanation:
y/x = 8
Show wether x and y show direct variation
Help I don’t wanna go to summer school
Answer:
y/x = 8 shows DIRECT variation.
Step-by-step explanation:
y varies directly as x if y = kx for some constant, k. In other words, y/x is constant.
A bottle holds 255 milliliters of shampoo. How many liters will 32 bottles hold?
816 liters
8.16 liters
8,160 liters
81.6 liters
Answer:
816 liters
Step-by-step explanation:
Hope this helps :)
Over the summer, the facility manager of a public swimming pool collected information on the amount of water in the pool and the number of swimmers. The results are shown in the scatter plot below. Which statement is supported by the data in the scatter plot?
A. As the number of swimmers increases, the amount of water in the pool tends to decrease.
B. As the number of swimmers increases, the amount of water in the pool tends to increase.
C. As the number of swimmers increases, the amount of water in the pool tends to stay the same.
D. There is no relationship between the number of swimmers and the amount of water in the pool.
The answers is B
Step-by-step explanation:
EDGE2021
As the number of swimmers increases, the amount of water in the pool tends to decrease.
Thus, option (A) is correct.
Given:
A scatter plot which shows he amount of water in the pool and the number of swimmers.
Now, from the scatter plot it can be seen that
As the number of swimmer increases there is no such change in amount of water.
There is only increase in a amount of water when the number of swimmers were between 60 to 70.
But at last the plot shows that the amount of water decrease.
Therefore, number of swimmers increases, the amount of water decrease.
Thus, option (A) is correct.
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George is 31 years older than Leo who is 15 years younger than Carol. In how many years will Carol be the same age as George is now?
Answer:
16 years
Step-by-step explanation:
Break the problem down:
George = 31 + Leo
Leo = Carol - 15
Carol = ?
The problem is asking for the number of years it will take for Carol to be George's current age.
Leo is 15 years younger than Carol which means Carol is 15 years older than Leo.
George is 31 years older than Leo. Carol is older than Leo by 15 years.
This means we have to find the difference between 31 and 15.
31 - 15 = 16
Since the difference between George and Carol's age is 16 years, it will take Carol 16 years to be the same age as George is now.
Which of the data sets below have the following five-number summary which could be used to create a box plot for the data set? Select all that apply.
16 ~ 19 ~ 23 ~ 31 ~ 32
A.
16, 18, 19, 23, 23, 30, 32, 32
B.
16, 18, 19, 23, 29, 31, 32
C.
16, 19, 22, 24, 31, 32
D.
16, 18, 20, 20, 23, 26, 30, 32, 32
E.
16, 18, 20, 23, 30, 32, 32
Explain how to find the volume of a triangular pyramid. (Explain the steps)
Use the given line of best fit to approximate the rate of change relative to the scatter plot below.
A. 1/20 errors per word translated
B. 1/5 errors per word translated
C. 1/10 errors per word translated
D. 3/20 errors per word translated
Answer:
C. 1/10 errors per word translated
Step-by-step explanation:
According to this graph, we can see that every 100 words-translated, there are about 10 errors (red line). The red line continues at this slope/ratio, and so it would be 10/100 or 1/10 simplified.
The rate of change relative to the scatter plot below will be 1/10 errors per word translated. Option C is correct.
What is the line of best fit?A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.
[tex]\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2} \\\\\rm c = \dfrac{\sum y -m \sum x}{n}[/tex]
For the given condition, we have to find the rate of change relative to the scatters plot below.
The given graph is in between the total error and the translation error. This graph shows that there are around 10 translation mistakes for every 100 words (red line). Given that the red line continues at this slope and ratio, it would be expressed as 10/100 or 1/10.
Thus, the rate of change relative to the scatter plot below will be 1/10 errors per word translated. Option C is correct.
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there are 6 boys and 5 girls in the debate class. kids are being selected to go present their work without getting opt-out where is the probability that a boy will be selected to present twice?
Answer:
30%?
Step-by-step explanation:
6 boys, 5 girls
first selection is a 6/11 chance it's a boy.
second seletion is a 6/11 chance it's a boy.
6/11 times 6/11 is... 0.2975 or about a 30% chance ( i think)
Just multiply the probability of the first event by the second. For example, if the probability of event A is 2/9 and the probability of event B is 3/9 then the probability of both events happening at the same time is (2/9)*(3/9) = 6/81 = 2/27.
Find all roots of the polynomial function f(x) = 2x^4-x^3-13x^2+5x+15
Answer:
Roots are : 1, -7 and -7
Step-by-step explanation:
When we put x = -1 in F(x) it is equal to 0
Thus, (x + 1) is factor of given function.
When we divide F(x) by (x + 1) it gives the value (x² - 6x - 7)
factorizing the work x² - 6x - 7 by middle term splitting.
> x² - 6x - 7 = x² - 7x + x - 7
> x(x - 7) + 1(x - 7)
> (x + 1) (x - 7)
then, x³ - 5x² - 13x - 7 = (x + 1)(x + 1)(x - 7)
x = -1, -1, 7 the factor.
D and C is the answers.
Step-by-step explanation:
In which expression is the coefficient of the n term -1?
Answer:
jubiau 72t
Step-by-step explanation:
and also tbhe
Why are the lit up portions of
the of Earth and Moons (in
the inner circle of the
diagrams) all pointing the
same way?
SUNLIGHT
GIVING BRAINLIEST
The average cost of Purell in 2019 was $8.99 for a bottle. In 2020, the cost of Purell on Amazon jumped to $58.99. What is the percent change? Round to the nearest tenth of a percent.
Answer:
556.2% change
Step-by-step explanation:
Percentage change = (p2-p1)/p1 * 100%
= (58.99 - 8.99) / 8.99 * 100%
= 556.2% change
Mark brainliest if this helped
Mark brainliest if this helped
Point X is on a number line halfway between `-5` and `11`. What integer would represent point X?
Answer:
3 i think because 4 5 6 7 8 9 10 = 7 and 2, 1, 0, -1, -2, -3, -4, = 7
Step-by-step explanation:
And also you never put anwer to choose from.
Y ∈ [ 0, 11 ) assuming -5 and 11 are not included, as the word "between" suggests.
Can someone please help me figure out how to solve this?
Answer:
B. 48m²
Step-by-step explanation:
The formula for volume is length (base) times width times height, or LWH. If you break the shape into three separate areas, you can figure out the volume for each part and then add it up.
The large part on the bottom is 7m long, 2m across. Since we know the entire shape is 4m tall and the indent is 2m deep, we know that the height for the bottom part will also be 2m. 7 · 2 · 2 = 28.
The block on the left is 2m tall, 2m across, and its width is also 2m as shown by the measurement on the bottom-right. 2 · 2 · 2 = 8.
Finally, the block on the right is 2m tall, 3m across, with a width of 2m. 3 · 2 · 2 = 12. And when you add it all up, 28 + 8 + 12 = 48. Hope this helps! Feel free to ask any questions!
HELP?! PLEASE?!
- Melanie started working at Zane's Car Wash. She recorded the number of car washes for each day during the months of October and November, and she displayed the results in the box plots shown below. Which statements best supports the information from the graph? *
Answer:
she washed more cars in October
Step-by-step explanation:
in November she washed 17 to 19 cars
in October she washed 22 to 24 cars
22 - 17 = 5 24 - 19 = 5
so she washed 5 more cars in October
plz mark brainliest if this helped you!!
Mr. Hamilton surveyed his class to find the total number of hours each of his students slept the previous night. The histogram shows the results of the survey.
How many more students slept 4 – 7 hours than 12 – 15 hours?
Answer:
6 more students
Step-by-step explanation:
hope this helps
pls help meeeeeeeeeeeeee
Answer:
2
Step-by-step explanation:
Total hours spent is:
[tex]1\frac{1}{2}+ 1\frac{1}{2} +2\frac{1}{2}+ 2\frac{1}{2} = 8[/tex] (8hrs)
[tex]\frac{8 hours}{4 days} = 2hours/day[/tex]
