Can I have some help please?? I will give Brainliest!!!
The sum of two numbers x and y is 399, and the value of the fraction x/y is 0.9. What is the value of y - x?
Answers
Answer:
The value of \(y-x\) is \(1\)
Step-by-step explanation:
\(0.9 = \frac{9}{10} \\\)
\(10-9=1\)
Hope this helped! Good luck with whatever you need this for!!
The value of y - x is 21, given the sum of x and y is 399 and x/y equals 0.9.
x + y = 399.... equa 1
x/y = 0.9....equa 2
solving equation 1
y = 399 - x
substitute this value of y in terms of x into the second equation:
x/(399 - x) = 0.9
0.9(399 - x) = x
359.1 - 0.9x = x
359.1 = 1.9x
x = 359.1/1.9
x = 189
for the value of y,
y = 399 - x
y = 399 - 189
y = 210
value of y - x:
y - x = 210 - 189
y - x = 21
learn more about equation here
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Related Questions
Four swimmers are training for a relay race. Each day they practice by swimming at least 1,600 yards total. The friends evenly divide the number of yards they swim.
Write and solve an inequality to determine how many yards each friend will swim. Show all your work.
Answers
Answer:
400
Step-by-step explanation:
I divided 1600 by 4 which got me 400
400 yards each
Step-by-step explanation:
Divide 1600 by 4 and get 400
HELP PLEASEEEEE THank you fractions & ratios fill in space:
Answers
Answer:
2334546
Step-by-step explanation:
the answers is 2/3 /4/2 and 5/6
Paula spent 3/8 of her allowance on clothes and 1/6 on entertainment. What fraction of her allowance did she spend on the other items?
Answers
Answer:
11/24
Step-by-step explanation:
x=1-(3/8+1/6)
so
x=1-(13/24)=11/24
sorry if i need any.
Answer:
11/24
Step-by-step explanation:
you have to make the denominators the same.
to do that, you must find the LCM (Least Common Multiple) of the denominators which are 6 and 8.
Multiples of 6: 6, 12, 18, 24 (6 multiplied by 4 = 24)
Multiples of 8: 8, 16, 24 (8 multiplied by 3 = 24)
the LCM of 6 and 8 is 24 - this means that the smallest number that BOTH 6 and 8 can be divided into, WITHOUT leaving a remainder is 24.
From there, you multiply the ENTIRETY of each fraction by the number the denominator multiplies by to get 24:
3/8 multiplied by 3/3 = 9/24
1/6 multiplied by 4/4 = 4/24
NB: If you wish to check if your new and your old fractions are the same, all you have to do is simplify the new fractions and see whether or not you get back the old ones.
Next, you add the new fractions:
9/24 + 4/24 = 13/24
To get the allowance that she spent on other items:
24/24 (which is equal to 1 or 1 whole) - 13/24
This then results in 11/24 which is your answer
PLSSS help me!! I'm stuck on this geometry again
Answers
Answer:
Step-by-step explanation:Take an empty box with open top in the shape of a cube whose each edge is 2 cm. Now fit cubes of edges 1 cm in it. From the figure it is clear that 8 such cubes will fit in it. So the volume of the box will be equal to the volume of 8 unit cubes together.
Therefore, the volume of the cube = 8 cu cm
Note that 8 = 2 × 2 × 2
Thus, volume of a cube = side × side × side = side3
\( {( \frac{251}{10}) }^{3} = 15813.251\)
Sandra went for pizza with friends. She ordered a slice of pizza with a side salad for $9.50. The tax was 6.2%.
What was the total amount Sandra paid for her meal?
Enter your answer in the box.
Answers
Answer:
Ok so as a whole there are 8/8 slices you take 5 away with green peppers so now you have 3 out of the 8 slices and you turn 2 of them into mushrooms.
So you 1 slice left (no toppings).
So in a grand total .625 % of the pizza is Green Peppers.
And the mushrooms have covered .25 % of the pizza and the topping less slice with .125 % so the obvious topping is Green Peppers
Step-by-step explanation: i hope this answer your question if this is wrong or correct please let me know
You would multiply 9.50x0.062 which gives you 10.089 so if you round it would be $10.09
Trinity's science instructor entered the 7th students in a STEM competition. There was an enrollment fee of $50 and an additional fee of $12 for each packet of 10 tests. The total cost was $170. How many tests were purchased? Which of the following equations best models the situation? Question 1 options:
A12x + 50 = 170
B 50x + 12 = 170
C 12x - 50 = 170
D 50x - 12 = 170
Answers
Answer:
A
Step-by-step explanation:
A fruit juice recipe calls for 2 parts orange juice and 8 parts pineapple juice. Which proportion can be used to find the amount of orange juice, j, that is needed to add to 18 L of pineapple juice?
2 over 8 equals j over 18
8 over 2 equals j over 18
8 over j equals 2 over 18
16 over 18 equals j over 100
Answers
The correct proportion to use to find the amount of orange juice, j, needed to add to 18 L of pineapple juice is:
2/8 = j/18
This proportion relates the ratio of orange juice to pineapple juice in the recipe (2:8) to the amount of orange juice needed to add to 18 L of pineapple juice. By cross-multiplying, we can solve for j as follows:
2/8 = j/18
218 = 8j
36 = 8*j
j = 36/8
j = 4.5
Therefore, you would need to add 4.5 L of orange juice to 18 L of pineapple juice to create the fruit juice recipe that calls for a ratio of 2 parts orange juice to 8 parts pineapple juice.
Answer:
2 over 8 equals j over 18Step-by-step explanation
2 over 8 equals j over 18
This proportion represents the ratio of orange juice to pineapple juice in the recipe. By setting up the proportion, we can solve for the value of 'j,' which represents the amount of orange juice needed.
So, the correct proportion is:
2 over 8 equals j over 18
Pls help! Will give brainliest!!
Answers
Considering area (A) of garden as 30 square feet:
30 = x(2x+7)
Now we need to expand it:
x(2x+7) = 2x^2 + 7x
2x^2 + 7x = 30
Adding this into an Algebra calculator gives us 5/2 or 2.5
So x = 2.5
To prove this:
2(2.5) + 7 = 12
14 * 2.5 = 30
(2x+7) x = 30
you can distribute to make this easier
2x^2 + 7x = 30
you can plug this into quadratic formula by setting the equation =0, so:
2x^2 +7x -30 = 0
where 2x^2 = a
7x = b
and -30 = c
you can plug this into your calculator and get an answer of
X = 2.5
What is the difference between these fractions..?
+3/4−(+7/8)
A. -7/4
B. -1/2
C. -1/8
Answers
Answer:
c
Step-by-step explanation:
If you opened a small bottle of ink at the bottom of a swimming pool, what do you think would happen? (MOLECULE RELATED)
Answers
Answer: the ink would probably spread
Answer:
It would start to spread
Step-by-step explanation:
If you put ink on the bottom of the pool it will spread kinda of like octupus ink in the ocean
What do the rates of change represent in the problem?
Answers
Answer: the slope, change in Y over change in X simplified
A tart contains either 3 white, or 4 red, or 5 black cherries. A tray of 20 tarts contains 89 cherries. How many red cherries are on the tray if it contains 3 tarts with white cherries?
Answers
- x be the number of tarts with white cherries
- y be the number of tarts with red cherries
- z be the number of tarts with black cherries
From the problem, we know that each tart can only have one type of cherry. So we can set up the following system of equations:
x + y + z = 20 (the total number of tarts is 20)
3x + 4y + 5z = 89 (the total number of cherries is 89)
We also know from the problem that each tart with white cherries contains 3 cherries. So the total number of white cherries is 3x. We are looking for the number of red cherries, which is 4y.
To solve for y, we can use substitution. We can rearrange the first equation to get:
z = 20 - x - y
Then we substitute this expression for z in the second equation:
3x + 4y + 5(20 - x - y) = 89
Simplifying this equation, we get:
2x - y = -3
Now we can solve for y by isolating it on one side of the equation:
y = 2x + 3
We know that each tart with white cherries contains 3 cherries, so the total number of white cherries is 3x. We also know that each tart with black cherries contains 5 cherries, so the total number of black cherries is 5z. So we can rewrite the equation for the total number of cherries as:
3x + 4y + 5(20 - x - y) = 89
Simplifying this equation, we get:
2x - y = -3
Now we can solve for y by isolating it on one side of the equation:
y = 2x + 3
We know that each tart with white cherries contains 3 cherries, so the total number of white cherries is 3x. We also know that each tart with black cherries contains 5 cherries, so the total number of black cherries is 5z. So we can rewrite the equation for the total number of cherries as:
3x + 4y + 5(20 - x - y) = 89
Simplifying this equation, we get:
This text is generated by Ask AI! Download now: https://app.adjust.com/88t5kzu
5/12 of what = 50? please help and explain if u can
Answers
Answer:
sorry no answer just some steps you can do.
Step-by-step explanation:
just divide 50 by 5/12 :) i hope this helped ik its not much.
Can someone help me with this question!!
Answers
Answer:
8
Step-by-step explanation:
area = bh/2
32.4 yd² = 8.1 yd × s / 2
s = 8 yd
Help!
The number of cookies that were made at a bakery for each of seven days is shown:
108, 96, 96, 84, 108, 240, and 84
The best measure of center for this data set is the-
A: median because all of the values are close to one another in value
B: mean because all of the values are close to one another in value
C: median because 240 is much higher than the other numbers in the data set
D: mean because 240 is much higher than the other numbers in the data set
Answers
The data set is as follows: 108, 96, 96, 84, 108, 240, and 84.
The median represents the middle value when the data set is arranged in ascending or descending order. In this case, when we arrange the data in ascending order, we have: 84, 84, 96, 96, 108, 108, 240. The middle value is 96, which is the fourth value in the sorted data set.
The mean is calculated by summing up all the values and dividing by the total number of values. In this case, the sum of the values is 756 (108 + 96 + 96 + 84 + 108 + 240 + 84), and there are seven values. Therefore, the mean is 756/7 = 108.
Comparing the options:
A: median because all of the values are close to one another in value - This is not accurate as the values vary, and the median is not necessarily the best measure of center based on the values being close to one another.
B: mean because all of the values are close to one another in value - This is not accurate as the values are not all close to one another, and the mean is not necessarily the best measure of center based on the values being close to one another.
C: median because 240 is much higher than the other numbers in the data set - This is not accurate as the presence of a single high value does not automatically make the median the best measure of center.
D: mean because 240 is much higher than the other numbers in the data set - This is the most accurate option. The mean takes into account the magnitude of each value and is influenced by extreme values. The value 240 has a significant impact on the mean, making it a better measure of center in this case.
Therefore, the best measure of center for this data set is D: mean because 240 is much higher than the other numbers in the data set.
I have 60% on my iPad and my brother has 90% on his how much more percentage I need as a fraction.
Answers
Answer:
1/3
Step-by-step explanation:
just convert it?
3/10
Step-by-step explanation:
60% is the same as 60/100
90% is the same as 90/100
90-60=30
30/100
30/100 is divided by 10 on each side to simplify it to 3/10
help plzzzzzzzzzzzzzzzz
Answers
Answer:
decimal form is -13.75 mixed fraction form -13 3/4
I don't understand this is urgent, please help
Answers
Answer: 19
Step-by-step explanation:
If 15 pies will serve 120 people then you take 120 divided by 15 with is 8.
then take 8 and divide it by 152 which will equal 19
so you will nee 19 pies for 152 people.
Can you solve this for me? Thank you! :>
Answers
Answer: Z=14
Step-by-step explanation:
Simplify the equation: 1/4z=7/2
then multiple both sides by 4:
4 (1/4) = 4 (7/2)
z= 14
Answer: z=14
Step-by-step explanation: very easy
1/4z = 3 1/2 Divide each side by 1/4 to isolate z
3 1/2 will be divided by 1/4
How to divide 3 1/2 by 1/4?
Keep, change, flip.
First: Convert 3 1/2 to an improper fraction which is 7/2
Second: 7/2 / 1/4 keep 7/2
7/2 x 1/4 change from dividing to multiplying
7/2 x 4/1 flip 1/4 around to make it 4/1
28/2 multiply and then simplify to 14.
so the answer is 14
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Answers
According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
30 POINTS. Fake answers will be reported.
-
In this activity, you will solve the problem presented in the introduction. Patricia wants to estimate the future consumer price index (CPI). She first found the CPI for January of every year from 1990 to 2010. She created a scatter plot of the data and drew the line of best fit as shown.
Part A
What is the equation for the line of best fit?
Part B
What would the x-value be to find the CPI for the year 2030?
Part C
Use the equation of the line of best fit and the value of x found for the year 2030 to estimate the CPI for the year 2030.
Answers
what is this shape????
help please, ty
Answers
Answer:
Step-by-step explanation:
i need help on this plz help me
Answers
Please helpppp will give brainlist if correct! pleaseeee am struggling :((((
Thank you.
Answers
Answer:
0.42
0.15
0.19
Step-by-step explanation:
Each person will drink (12.6/30=0.42) liters of punch.
Each person will drink (4.6/30=0.15) gallons of icecream.
Each person will drink (5.7/30=0.42) pounds of fudge.
Find the slope of the line below using rise/run.
Answers
Answer:
Slope: \(\frac{1}{2}\)
Step-by-step explanation:
Slope is : \(\frac{rise}{run}\)
If we start at the plotted point (0,0), to travel to the plotted point (2,1) following rise over run pattern you would go up 1 unit for it to correspond the set point and 2 units to the right to reach the exact point.
Hope this helps, Good Luck!
Please need help ASAP.
Answers
Answer: in this order angle d, e, f line de, ef, fd
Step-by-step explanation:
Raul is investigating the prices of boxes of cereal at his local grocery store. He collected the cereal prices shown below. All the values are in dollars.
Create a fully labeled line plot to represent Raul’s data
Answers
Answer:
Step-by-step explanation:
there are 18 units
1 x 3.00 3 x 3.50 4 x 4.00 3 x 4.50 2 x 5.00 3 x 5.50 1 x 6.00 1x 6.50
Line plot x (unit total cereal ) 0-1 1-4 4-9 9-12 12-14 14-17 17-18 18-19
so needs to be numbered to 20
Line Plot y (Unit Price $ ) 0 -3 0 - 3.5 0-4 0-4.5 0-5 0-5.5 0-6 0-6.5
so needs to be numbered to 7
Explain the cosine rule and sine rule while also saying how to use it and provide examples (keep it in simple terms)
Answers
Answer:
Sure, I'll explain the cosine rule and sine rule in simple terms:
The cosine rule (also known as the law of cosines) is used to find the length of a side or the measure of an angle in a triangle given the lengths of the other sides and the angle between those sides. It states that c^2 = a^2 + b^2 - 2ab cos(C), where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.
Here's an example of how to use the cosine
Suppose we have a triangle with sides a=6, b=8, and an angle between them c=45 degrees. We want to find the length of the remaining side of the triangle, side a.
Using the cosine rule:
a^2 = b^2 + c^2 - 2bc * cosA
where A is the angle opposite side a, we can plug in our values and solve for a:
a^2 = 8^2 + 6^2 - 2(8)(6) * cos(45)
a^2 = 64 + 36 - 96 * 0.707
a^2 = 10.56
a = sqrt(10.56)
a = 3.25 (rounded to two decimal places)
Therefore, the length of side a is approximately 3.25 units.
Answer:
Step-by-step explanation:
PLEASE HELP ME, LOOK AT THE PICTURE
no wrong answers please :(
Answers
Answer: 1/9
Step-by-step explanation:
There are 3 possibilities of it landing on 7 (greater than 6), is 1/3 alone. Then adding on landing on 5, right after, you have 1/9.
Solve both please 7th grade math
Answers
B will be 106 i Belive