Answers
Substitute x=4y+5 into the first equation
2(4y+5)-3y=5
8y+10-3y=5
Subtract both sides by 10
5y=-5
Divide both sides by 5
y=-1
Now that we have a value of y we can put that value into any equation and we will get the value of x
I will do it to both equations to prove it
2x-3(-1)=5
2x+3=5
Subtract both sides by 3
2x=2
Divide both sides by 2
x=1
x=4(-1)+5
x=1
So your final answer is x=1 and y=-1
Related Questions
Sudhanshu is solving a system representing a race between two remote control cars. The variable x is defined as time in seconds, and y is the distance in meters from the starting line. How many solutions should Sudhanshu find?
Answers
However, if the speeds are changing, then there could be multiple solutions.
Answer:
The lines would only cross ONCE. So the answer is ONE.
Step-by-step explanation:
If using a graphing calculator you will see that the lines are at different slopes and will soon cross at (5,20) on a graph. Which means that the second cars is also faster even though the first car had a head start.
Jamie is 5 years older than Ella. Jamie's age is 11 years less than three times Ella's age. The system below models the relationship between Jamie's age (j) and Ella's age (e):
j = e + 5
j = 3e – 11
Which of the following methods is correct to find Jamie's and Ella's age? (4 points)
Solve j + 5 = 3j – 11 to find the value of j.
Write the points where the graphs of the equations intersect the x-axis.
Write the points where the graphs of the equations intersect the y-axis.
Solve e + 5 = 3e – 11 to find the value of e.
Answers
The correct method is to use the equation
e + 5 = 3e - 11
on solving, we get e = 8 and j = 13
Other methods are complicated.
What is the formula for the perimeter of a rectangle?
Answers
Solve the equation (x-5)1/2+5=2
Answers
((x-5) ^ (1/2)) + 5 = 2
Clearing x we have:
(x-5) ^ (1/2) = 2-5
(x-5) ^ (1/2) = -3
x-5 = root (-3)
x-5 = i * root (3)
x = 5 + i * root (3)
Answer:
The value of x is given by:
x = 5 + i * root (3)
(x - 5)1/2 + 5 - 5 = 2 - 5
(x - 5)1/2 = -3
1/2x - 2.5 = -3
1/2x - 2.5 + 2.5 = -3 + 2.5
1/2x = -1/2
(1/2x)/(1/2) = (-1/2)/(1/2)
x = -1 <-------------answer :)
Please help me!
Which of the following is the best definition of the sample space of a probability event?
Answers
Answer: D. The set of all possible outcomes
Step-by-step explanation:
The set of all possible outcomes is the collection of all possible outcomes of an experiment.In the theory of probability the sample space of an random experiment is the set of all possible results of that particular experiment.Therefore, the best definition of the sample space of a probability event is the set of all possible outcomes.
Determine whether quantities vary directly or inversely and find the constant of variation. It takes three identical water pumps 8 hours to fill a pool. How long would it take four of these same pumps to fill the pool, assuming they all pump at the same rate?
PLEASE HELP!!
Answers
24/4 = 6 HOURS
The big bend national park covers 800,000 acres. Brazos Bend state park covers about 5,000 acres. About how many more acres does Big Bend National Park cover then Brazos Bend state park?
Answers
this but okay....
Big Bend National Park is larger by approximately 795,000 acres than Brazos Bend State Park. This figure was obtained by subtracting the area of the Brazos Bend State Park from the area of the Big Bend National Park.
Explanation:The Big Bend National Park and the Brazos Bend State Park have a substantial difference in size. You can calculate this size difference by performing a simple subtraction operation. In this case, the size of the Big Bend National Park is 800,000 acres, whereas Brazos Bend State Park covers about 5,000 acres. By subtracting the size of Brazos Bend State Park from the size of the Big Bend National Park, we will get about 795,000 acres, which represents the size difference.
So, the formula would appear as follows:
800,000 acres (Big Bend National Park) - 5,000 acres (Brazos Bend State Park) = 795,000 acres difference.
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The equation below shows The area of a trapezoid, a, with a height of 9 cm, and one base 35 cm. A=9/2(b+35)
Which formula correctly solves for the other base, b?
Answers
A = 9/2 (b + 35)
We must clear b from the equation, to obtain the value of the other base.
Clearing b we have:
(b + 35) = (2/9) A
b = (2/9) A - 35
Answer:
A formula that correctly solves for the other base, b is:
b = (2/9) A - 35
Find f(x) if it is known that f(3k)=3k+7.
Answers
Since f(3k) = 3k+7 (Equation 1)
We have to determine the value of f(x).
That is we have to replace 3k by x,
3k = x
Substituting the value of 3k in equation 1.
So, f(x) = x + 7
Therefore, f(x)=x+7 is the required function.
what does a highter and lower standard deviation tell you!!!!?
what does a higher and lower z-score tell you ?
what does the varience tell you?
Answers
V = s^2
where V = variance and s = standard deviation
So the variance can also be used to determine how grouped or spread out the data values are
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The z score tells us where this score is located in terms of the group. If the z score is positive, then it is above the mean. If the z score is negative, then it is below the mean. The further the z score is from zero, the further the raw score is from the mean. A score of z = 0 is right at the mean.
Triangle BCD is similar to triangle ACE. If the triangles are isosceles, what is the length of AB?
F.) 16cm
G.) 11cm
H.) 40cm
J.) 35cm
Answers
[tex] \frac{2.75}{22} = \frac{5}{ac} \\ ac = 5 \div ( \frac{2.75}{22} ) = 40 \\ ab = 40 - 5 = 35[/tex]
Correspondind sides, similar triangles
A crane is rented at $1000 per day plus a charge per hour of use. The crane was used for 7 hours on a day, and the total charge was $3450. Which equation can be used to find the charge x, in dollars, per hour of use?
Answers
What type of triangle is this
1. right isosceles
2. obtuse isosceles
3. equilateral equilangular
4. acute scalene
5. right scalene
6. obtuse scalene
7. acute isoceles
Answers
Find the area of the trapezoid to the nearest tenth.
Answers
The area of the trapezoid would be 153. What I’d did was 1.3 added to 1.5 added to 0.6, multiplied by 45, and I got the answer of 153.
A bag is filled with marbles. You take out and mark 80 marbles. Then you put the marbles back in the bag and mix the marbles. In a sample of 20 marbles, 4 of the marbles are marked. About how many marbles are in the bag?
Answers
A patrolman spends 25% every day completing paperwork. The patrolman’s shift each day is 8 hours. How much of his time does he spend doing paperwork each day?
Answers
[tex]8 \times 25\% \\ = 8 \times \dfrac{25}{100} \\ = 2[/tex]
Answer : He spends 2 hours doing paperwork each day.
Hope this helps. - M
A researcher randomly surveyed a sample of high school students in a town to find out which career area they were most interested in pursuing. This table shows the results of the sample. The town has a total of 1000 high school students.
Art Science Finance Health Law Education
26 24 16 21 18 20
Based on this sample, how many high school students in the school are predicted to be most interested in pursuing a career in health?
Enter your answer in the box.
Answers
26 + 24 + 16 + 21 + 18 + 20 = 125 total
21 picked health so 21 / 125 = 0.168 of the students picked health
multiply that by total students:
1000 * 0.168 = 168 total students will pick health
The total number of students who will pick health is 168 if a researcher randomly surveyed a sample of high school students in a town.
What is a survey?A survey is a means of gathering information from a sample of people using pertinent questions with the goal of understanding populations as a whole.
We have:
A researcher randomly surveyed a sample of high school students in a town to find out which career area they were most interested in pursuing.
The town has a total of 1000 high school students.
Total of students sampled = 26 + 24 + 16 + 21 + 18 + 20
= 125 total
21 picked health:
= 21 / 125
= 0.168 of the students picked health
Total students will pick health:
= 1000×0.168
= 168
Thus, the total number of students will pick health is 168 if a researcher randomly surveyed a sample of high school students in a town.
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Can I have some help with this question?
Answers
-10+90x+6x-60
96x-70
so d is the answer
-10(1-9x)=90x-10
6(x-10)=6x-60
(90x-10)+(6x-60)=96x-70 (same thing as -70+96x)
So, the answer is D. -70+96x
Have a nice day! ♪
Robin’s scores: 99, 108, 102, 107, 119 Evelyn’s scores: 125, 137, 138, 145, 145 Find and compare the medians of the data sets. Do the medians support your conclusion that Robin is winning the game?
Answers
Robin's scores: 99, 102, 107, 108, 119. Median is 107.
Evelyn's scores: 125, 137, 138, 145, 145. Median is 138.
The median from Evelyn's scores is greater than the median from Robin's. Therefore, the medians do NOT support the conclusion that Robin is winning the game.
Answer:
The median score for Robin is 107. The Median Score of Evelyn is 138. The medians are the same as the means, so the same conclusion that Robin is winning will be drawn.
Step-by-step explanation:
Originally priced at $15.99 was marked down 15% and then it was moved to a clearance rack marked take an additional 50% off the lowest marked price what is the final price of the PlayStation game
Answers
ANSWER ASAP PLEASE!!!
Johnny wants to know how many students in his school enjoy watching science programs on TV. He poses this question to all 26 students in his science class and finds that 75% of his classmates enjoy watching science programs on TV. He claims that 75% of the school's student population would be expected to enjoy watching science programs on TV. Is Johnny making a valid inference about this population?
A. Yes, it is a valid inference because his classmates make up a random sample of the students in the school
B. Yes, it is a valid inference because he asked all 26 students in his science class
C. No, it is not a valid inference because he asked all 26 students in his science class instead of taking a sample from his math class
D. No, it is not a valid inference because his classmates do not make up a random sample of the students in the school
Answers
Answer:D
Step-by-step explanation:
i got it right onn a test
370x1/10 = please help
Answers
It is thirty seven, use a calculator
This is because 370 times 1/10 is the same as 370 times 0.1 which would be equal to 37
what does x equal
5x+2y=3
1x+2y=6
Answers
vector works the same number of hours every week he worked a total of 532.5 and hours in the last 15 weeks. how many hrs did he work in one week
Answers
this will give you the hours in one week
= 35.5
532.5/15 = 35.5
Vector worked 35.5 hours in one week.
Cheryl used 40% of her money to buy a dress and 1/5 of the remainder to buy a pair of shoes. She then donated $60 to charity and had $132 left How much money did Cheryl have at first?
Answers
Amount used for dress= 40% of a
amount left =60% of a
amount used for shoe= 1/5*60a/100=3a/25
left=60a/100-12a/100=48a/100
=>48a/100-60=132
=>a=192*100/49=400
She had $400 at first.
Hope I helped, good luck.
Dress = 40% x = 0.4x
Amount left = x - 0.4x = 0.6x
Shoes = 1/5 x 0.6x = 0.12x
Amount left = 0.6x - 0.12x = 0.48x
Donated $60 and had $132 left:
⇒ 0.48x - 60 = 132
Solve x:
0.48x - 60 = 132
0.48x = 192
x = $400
Answer: $400
Find the future value of $1800 deposited at 8% for 5 years if the account pays simple interest, and the account pays interest compounded annually.
Answers
0.08(1800) + 1800
But because it is 5 years:
5(0.08(1800)) + 1800
0.4(1800) + 1800
We can make it simpler:
1.4(1800)
Multiply:
2520
YOU NOW HAVE $2520
Answer:
The answer is 2,644.79.
You would have to calculate the three variables to get and complete your answer.
Step-by-step explanation:
charlene is a video game designer and wants to make sure that her game can be played on all types of screens. In order for the games to work on both devices with a standard aspect ratio and those with widescreen aspect ratios, the playable area of the games should an aspect ratio of 3:2. This means that the width is equal to 3/2 times the height. On one type of tablet , the playable area of the game on the screen is 54 square inches. Write and solve a system of equations to determine the dimensions of the playable are.
A) width=6 height=9
B) width=6 height=4
C) width=13.5 height=9
D) width=9 height=6
Answers
Let w represent the width and h represent the height. The first equation we write deals with the area of the screen:
A=wh
Our playable area is 54, so we have
54=wh
Now we write the equation relating the width and the height. The width is 3/2 times the height; this means
w=3/2h
We will use substitution to solve this. Substitute the value for w from the second equation into the first equation:
54=wh
54=(3/2h)h
54=3/2h²
Divide both sides by 3/2:
54 ÷ 3/2 = 3/2h² ÷ 3/2
54/1 ÷ 3/2 = h²
54/1 × 2/3 = h²
108/3 = h²
36 = h²
Take the square root of both sides:
√36 = √h²
6 = h
The height is 6. Substituting this into our first equation,
54=wh
54=w(6)
Divide both sides by 6:
54/6 = w(6)/6
9=w
The width is 9.
Add the two expressions. 4.6x−3 and −5.3x+9 Enter your answer, in simplified form, in the box. PLEASE ANSWER FAST THIS IS A BIG DEAL!!!
Answers
[tex]4.6x - 3 + - 5.3x + 9\\ = (4.6x - 5.3x) + (-3 + 9)\\ = -0.7x + 6[/tex]
-----
Answer: -0.7x + 6
An expression is defined as a set of numbers, variables, and mathematical operations. The addition of the two given expressions (4.6x-3) and (-5.3x+9) is (-0.7x+6).
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The addition of the two given expressions (4.6x-3) and (-5.3x+9) is,
(4.6x-3) + (-5.3x+9)
= 4.6x - 3 - 5.3x + 9
= -0.7x + 6
Hence, The addition of the two given expressions (4.6x-3) and (-5.3x+9) is (-0.7x+6).
Learn more about Expression:
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if i started a business making braclets for $2 and necklaces for $3 with a budget >200 what would be the inequality equation?
How would I graph
Answers
How would I graph
Solution:
let x= number of bracelets
y= number of necklaces
Thus, the equation would be:
$2x+$3y>200
In graphing this equation, you just have to substitute any number for the values of x and y as long as when substituted, their sum is greater than 200
Please help me answer this question. Explain if possible.
Answers
"The functions have the same rate of change" is wrong because as we can see, the table goes up by 10, however, the graph goes up by 15
"Both functions are the same" is also wrong, we already proved they have a different slope, how could they possibly be the same?
"The rate of change for Tour 1 is greater" is also wrong because tour 2 goes by 15, which is greater than 10.
"The functions have the same initial value is correct because as we can see on the graph(tour 2), the y-intercept is 35, using the slope on the tab;e(tour 1) we can calculate that when x is 0, the y-value is 35, which means both of the tours has a y-intercept of 35, therefore, this is the correct choice
Explanation: Alright let's do answer of elimination. It cannot be "Both functions are the same" Due to the fact that for one person in Tour 1 is 45 dollars while for Tour 2 is 50. It cannot be "The functions have the same initial value. Since for initial value it's kind of like a constant. For example for 1 person it would be 20 dollars for 2 it would be 40 and so on. It cannot be the last one since rate of change is obviously different. I don't think I have to go into that.
Also I see your doing an IReady Lesson