Answers
Answer:
x=-1
Step-by-step explanation:
-4x=y+8
-8-4x=y
7x-2y=1
7x-2(-8-4x)=1
7x+16+8x=1
15×+16=1
15x=-15
x=-1
Related Questions
PLZZZZZZZZ HLPPPPPPPPP MEEEEEEEEEEEE
Answers
Answer:
D.8
Step-by-step explanation:
A cube's volume is basically the side length multiplied by itself 3 times, so if it was increased by a factor of 2, it would mean 2x2x2 which equals 8.
You estimate that there are 64 marbles in a jar. The actual amount is 46 marbles. Find the percent error. Round to the nearest tenth of a percent if necessary.
Answers
Answer:
percentage error = 39.1%
Step-by-step explanation:
You estimate that there are 64 marbles in a jar. The actual amount is 46 marbles. Find the percent error. Round to the nearest tenth of a percent if necessary.
Given that You estimate that there are 64 marbles in a jar.
The actual amount is 46 marbles
Actual marbles = 46
Your estimate = 64
[tex]\% error =\frac{estimated - actual}{actual}[/tex]
% error = | estimate - actual | / actual × 100%
estimate amount - actual amount = 64 - 46 = 18
[tex]= \frac{18}{46} \times 100\\\\=0.391\times 100\\\\=39.1 \%[/tex]
Therefore, percentage error = 39.1%
In a town, 45% of all households have a pet and 35% have children. 40% of all household have children and pet find the probability of that household.
Answers
The name for the expression 3/13 is:
Answers
Answer:
a fraction
Hope this helps!
suppose that the current canadian dollar to US dollar exchange rate is 0.80 CAD = $1 US and that the U.S. dollar price of an Apple iphone is $320 what is the Candian dollar price of iphone?
Answers
Answer: 256 CAD
Step-by-step explanation:
Hi, to answer this question we simply have to multiply the price in US dollars of the iphone (320) and multiply it by 0.80 ( Canadian dollar to US dollar exchange rate)
Mathematically speaking:
Since:
$1 US = 0.80 CAD
$320 x0.80 = 256 CAD
Feel free to ask for more if needed or if you did not understand something.
The data set below shows prices for concert tickets in 10 major cities. Find the interquartile range (IQR) of the set. How do the middle 50% of the prices vary?
Answers
Answer: IQR = 16
Step-by-step explanation:
Given the following data:
Cost of concert :
CITY : Q, R, S, T, U, V, W, X, Y, Z
Price : 35,36,42,38, 24,29,25, 44,49, 26
Interquartile range (IQR) = Q3 - Q1
Where,
Q3 = the upper quartile
Q1 = lower quartile
Rearranging the data:
24,25,26,29,35,36,38,42,44,49
Q3 = 42
Q1 = 26
IQR = (42 - 26) = 16
Answer:
18 (for the IQR)
Step-by-step explanation:
Well, follow the equation the other person did. You'd get the right answer if you do the stuff right. And for people where it has another part to it, the answer would be D.
I hope this helps :)
A total of 70 tickets were sold for a concert and earn the organizers $804. If the cost of each ticket is either $10 or $12, how many tickets of each type were sold?
Answers
Answer:
X=18
Y=52
Step-by-step explanation:
Let X represent the first type of ticket sold at the concert
Let Y represent the second type of ticket sold at the concert-----equation 1
X + Y= 70 (Total number of tickets sold) ------equation 2
(X×10) + ( Y×12)=$804. ( Total money generated in the concert
Since,
X+Y= 70
X= 70-Y
Substitute (70-Y) for X in equation 2
(70-Y)×10 + Y×12=804
700-10Y+12Y= 804
Collect the like terms
700+2Y=804
2Y=804-700
2Y= 104
Divide both sides by the coefficient of Y which is 2
2Y/2= 104/2
Y=52
Substitute 52 for Y in equation 1
X+Y=70
X+ 52=70
collect the like terms
X= 70-52
X=18
Hence the first type of ticket sold is 18 tickets and the second type of ticket sold is 52 tickets.
A high school coach wants to buy new shirts for the 25 members of the track team. The coach must spend less than $300 on the shirts and needs to figure out how much he can spend per shirt, s.
Answers
Answer:
$12 per shirt
Step-by-step explanation:
$300/25=$12
Answer:
11.96 per shirt
Step-by-step explanation:
299/25 = 11.96 you do this instead of 300/25 because it says less than 300
i need help asap pllz help !!
Answers
Answer:
14/28
Step-by-step explanation:
14/28 reduces down to 1/2
What was the ORIGINAL price of an item that cost $55.50 AFTER a 75%
discount? *
Answers
Answer:
$222
Step-by-step explanation:
Priya asked each of five friends to attempt to throw a ball in a trash can until they succeeded. She recorded the number of unsuccessful attempts made by each friend as: 1, 8, 6, 2, 4. Priya made a mistake: The 8 in the data set should have been 18. How would changing the 8 to 18 affect the mean and median of the data set
Answers
Answer: The mean will increase and the median would not change
Step-by-step explanation:
Recorded data by Priya :
Data: 1,8,6,2,4
Mean of data = (1+8+6+2+4)/5
=21/5 = 4.2
Median of data = 1,2,4,6,8
Median = 4
Correct data: 1,18,6,2,4
Mean of data = (1+18+6+2+4)/5
=31/5 = 6.2
Median of data = 1,2,4,6,18
Median = 4
Therefore ; according to the evaluation above, the median will remain unchanged, but the mean increased from 4.20 to 6.20.
Which inequality matches the graph
Answers
Answer:
D) x ≤ 3
Step-by-step explanation:
The inequality that matches the graph is x ≤ 3. This is because x is less than or equal to 3 as shown in the graph.
When answering pls write the number of the question ur doing that will be amazing thank u soo much
Answers
Step-by-step explanation:
No. 1
sin33° = x / 14
No. 2
Sin Z = 36.87°
No. 3
A = 62
No. 4
C = 36.87°
Hope this helps :)
Answer:
36.87
Step-by-step explanation:
A Roth IRA is advertised to pay 1.5% annual interest. You researched the rate of inflation to be 1.15% this year. What is the actual or real rate of return on the IRA?
Answers
Answer: 0.35%
Step-by-step explanation:
Given the following :
Advertised interest rate = nominal rate = 1.5%
Inflation rate = 1.15%
The real rate of return is calculated by:
[(1 + nominal rate) / ( 1 + inflation rate)] - 1
[(1 + (1.5/100)) / (1 + (1.15/100))] - 1
[(1 + 0.015) / ( 1 + 0.0115)] - 1
[ 1.015 / 1.0115] - 1
1.0034602 - 1 = 0.0034602
Real rate of return = (0.0034602 * 100)%
Real rate of return = 0.346%
Answer: 0.35%
Step-by-step explanation:
32 people are in one class 75% are girls.how much is the % of boys
Answers
｡☆✼★ ━━━━━━━━━━━━━━ ☾
girls + boys = 100%
If girls are 75%, then boys would be 25%
75% of 32 is 24
25% of 32 is 8
There are 24 girls and 8 boys
Have A Nice Day ❤
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Phillip is rolling two number cubes. How many different ways can he roll the number cubes and get a sum of 6?
A. 3
B. 4
C. 5
D. 6
Answers
help with geometry..need help...if any of you is good with geometry
What transformations would result in the image shown? (question for the first image)
a.Δ ABC is reflected over both axes.
b.Δ ABC is reflected over the y-axis and translated down 5 units.
c.Δ ABC is reflected over the x-axis and translated right 5 units.
d.Δ ABC is translated right 5 units and down 5 units.
Which transformations would result in the image shown?
a.ABCD is reflected over both axes.
b.ABCD is translated right 4 units and down 3 units.
c.ABCD is reflected over the x-axis and translated right 4 units.
d.ABCD is reflected over the y-axis and translated down 3 units.
Answers
Answer: For the first image, D will be the correct answer. For the second image, A will be the correct answer.
Step-by-step explanation:
The first image has a quite simple answer because translating the shape just means moving every point in the direction given according to some many units. In this case, we would be translating points A(-4,3), B(-3,1), and C(-1,2) 5 units right and 5 units down to get us the prime points of A'(1,-2), B'(2,-4), C'(4,-3).
In the second image, a reflection just describes a flip over some line, known as the line of reflection. We change the point's signs depending on the line of symmetry we are given when reflecting (in this case, the y axis). Reflecting the trapezoid over the y axis will result in a change of signs of the x values of the given points. Point A of the trapezoid is located on coordinate (-2,2), after the reflection, it will be located on point (2,2). Points B will reflect from point (-1,2) to point (1,2). Point C will reflect from (-1,1) to (1,1). Finally, point D will reflect from point (-3,1) to (3,1). After this reflection, we have to perform the same one except only the y values of our coordinates will change because we are reflecting over the x axis. After you graph the trapezoid from the previous reflection, do the same thing by just changing the y values of the coordinates to get your desired image.
Answer:
D
A
Hope this helps!
Dorinda worked 2 part- time jobs and earned $234.50 for working a total of 30 hours at both jobs. She is paid $7.50 per hour at Job A and $8.00 per hour at Job B. How many hours did Dorinda work at Job A?
Answers
Answer:
Dorinda worked at Job A for 11 hours
Step-by-step explanation:
Step one
This is a word that leads to simultaneous.
Let us begin by modeling the system of equation from the problem
Let x and y be the number of hours worked in both jobs A and B respectively
Step two
x+y=30---------1
7.5x+8y=234.50----2
Solving the equations simultaneously we have
1. Multiplying equation 1 by 8 and equation 2 by 1 and subtracting from equation 2 to find y
8x+8y=240---------1
- 7.5x+8y=234.50----2
=0.5x=5.5
x=5.5/0.5
x= 11hrs
Substituting x=11 in equation 1 we can find y
11+y=30
y= 30-11
y= 19hrs
Given r=2, s=5, t=8; what is 12s - 2rt + 101?
Answers
Given:
r = 2s = 5t = 8To find out:
Find the value of 12s - 2rt + 101?
Solution:
12s - 2rt + 101
=> 12 × 5 + 2 × 2 × 8 + 101
=> 60 + 32 + 101
=> 92 + 101
=> 193
which linear function represents the line given by the poin-slope equation y-8=1/2(x-4)
Answers
A patient was given medicine. She took 5 ml of
medicine 3 times in one day. How much medicine did
she take in total that day?
Answers
Answer:
15 ml.
Step-by-step explanation:
That is 3 * 5 ml = 15 ml in one day.
Answer:
h9978y
Step-by-step explanation:
Julie needs to cut 4 pieces of yam, each with the same length, and a piece of yarn 7.75 inches long. Let x represent the
length of each of the equal pieces of yarn that Julie decides to cut. What is the equation that can be used to determine the
total length of all of the yarn that she ends up cutting, y is the graph of the equation continuous or discrete?
Answers
Answer:
She has to cut another piece = 7.75 inches
Total length = 4x + 7.75
This is what y represent, so
y = 4x + 7.75
The graph of the equation is continuous
Which pair of angles is supplementary?
ZRXZ and ZYXZ
ZPXQ and ZRXS
ZYZX and ZUZT
ZWZX and XYZ
Answers
Answer:
B
Step-by-step explanation:
im not sure of the answer
The pair of angles that are supplementary are ∠YZX and ∠UZT.
Option C is the correct answer.
What is an angle?The angles between two lines are the angles formed by two intersecting lines, measured in degrees or radians.
Several different types of angles can be formed between two lines, including acute angles, right angles, and obtuse angles.
We have,
From the figure,
∠YZX and ∠UZT are opposite angles.
And they can form a supplementary.
This means,
∠YZX + ∠UZT = 180
Thus,
The pair of angles that are supplementary are ∠YZX and ∠UZT.
Learn more about angles here:
https://brainly.com/question/7116550
#SPJ5
Use the parabola tool to graph the quadratic function f(x)=(x−2)(x−6). Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.
Answers
Answer:
Step-by-step explanation:
(x-2)(x-6)= x^2-8x+12
vertex (4,-4)
Answer:
Step-by-step explanation:
What is the slope of the line that passes through the points (7, -9) and
(15, -29)? Write your answer in simplest form.
Answers
Y2-y1/ x2-x1
So -29-(-9)/15-7= -29+9/8= -20/8= -5/2 is the slope.
Answer: -5/2
Step-by-step explanation: Because you take the x1 and y1 and subtract it from x2 and y2. That gives you -20/8. Then you simplify.
What is the value of X very easy
Answers
Answer:
x=36
Step-by-step explanation:
The angles in a triangle must add to 180 degrees.
Therefore,
x+65+79=180
Add 65 and 79
x+144=180
We want to solve for x. In order to do this, we have to get x by itself. 144 is being added to x (+144)The opposite of addition is subtraction, so subtract 144 from both sides(-144)The +144 and -144 will cancel out, and leave x by itself.
x+144-144=180-144
x=180-144
x=36
Let’s check our answer. Add all the angles together, and make sure they equal 180 degrees.
x+65+79
We know x is equal to 36, so we can substitute it in
36+65+79
180
The 3 angles add to 180, so we know that x=36
Pls help me solve :The salary of a man was increased in the ratio 40:47. Calculate the percentage increase in the salary A. 85.1%. B. 58.5%. C. 17.5%. D. 14.9%
Answers
What is the rule for the reflection?
ry-axis(x, y) → (–x, y)
ry-axis(x, y) → (x, –y)
rx-axis(x, y) → (–x, y)
rx-axis(x, y) → (x, –y)
Answers
Answer:
ry-axis(x, y) → (–x, y)
rx-axis(x, y) → (x, –y)
Step-by-step explanation:
When you reflect over the x axis, the y values change. When you reflect over the y axis, the x values change.
Answer:
Option C is your answer
I says on my notes but it won't show you for some reason
I've done this before.
Step-by-step explanation:
Three people become infected with a virus that spreads quickly. Each day that passes, the number of infected people doubles. How can the number of infected people be determined from the number of days that have passed?
Answers
Answer: raise 2 to the number of days, and then multiply this value by 3.
Step-by-step explanation:
Answer: D
Step-by-step explanation:
Given right triangle XYZ, which correctly describes the
locations of the sides in relation to _Y?
a is opposite, b is adjacent, c is the hypotenuse
a is the hypotenuse, b is opposite, c is adjacent
a is adjacent, b is the hypotenuse, c is opposite
a is adjacent, bis opposite, c is the hypotenuse
Y
N
I don’t know the answer! Someone please tell me
Answers
Answer:
a is adjacent, b is opposite, c is the hypotenuse
Step-by-step explanation:
A right angled triangle must contain the opposite, the adjacent and the hypotenuse. The opposite is the side that directly faces the angle of interest. The adjacent is the side that is close to the angle of interest.
Given that the angle Y is positioned between X and Z, the point b becomes the opposite of Y. The point a becomes adjacent to angle Y while c remains the hypotenuse of the right angled triangle.
The image below typifies the explanation given above. It shows the relationship between the three sides of the right angled triangle in detail.
Answer:
a is adjacent, b is opposite, c is the hypotenuse
Step-by-step explanation:
i took the test on ed.
