Answers
Answer:
(3, -6)
Step-by-step explanation:
Both equations are equal to y, so you can make them equal to each other:
-2x = 5x-21
Get the same terms on the same side by subtracting 5x from both sides"
-7x = -21
Get x alone by dividing both sides by -7:
x = 3
The simplest way to find y is by filling in 3 for x in the first equation:
y = -2(3)
Multiply:
y = -6
Check your answer by filling in 3 for x in the second equation:
y = 5(3) - 21
Multiply:
y = 15 - 21
Subtract:
y = -6
To check both answers together, fill in 3 for x and -6 for y in both equations (although we already checked both answers above):
-6 = -2(3)
-6 = -6
-6 = 5(3) - 21
-6 = 15 - 21
-6 = -6
Answer:
3,-6
Step-by-step explanation:
Related Questions
A person with a _____ is expected to earn an average of $52,200 each year. A bar graph titled Average Annual Earnings for College Graduates and Non-Graduates. A Professional Degree is 109,600 dollars. Doctoral Degree is 89,400 dollars. Master's Degree is 62,300 dollars. Bachelor's Degree is 52,200 dollars. Associate's Degree is 38,200 dollars. Some College is 36,800 dollars. High School Diploma is 30,400 dollars. Some High School is 23,400 dollars. A. Master’s Degree b. High School Diploma c. Bachelor’s Degree d. Doctoral Degree Please select the best answer from the choices provided A B C D.
Answers
Answer:
D
Step-by-step explanation:
Professional Degree
A person with a Bachelor's Degree is expected to earn an average of $52,200 each year. Thus, option c is correct.
The average is defined as the sum of all observation to the total number of observation.
Given that:
Professional Degree: $109,600
Doctoral Degree: $89,400
Master's Degree: $62,300
Bachelor's Degree: $52,200
Associate's Degree: $38,200
Some College: $36,800
High School Diploma: $30,400
Some High School: $23,400
The best answer from the choices is Bachelor's Degree. Thus, option c is correct.
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Last question im putting all my points into this pleae help! 50 points!
Answers
Answer:
10 inches
Step-by-step explanation:
refer the image
What property was applied to solve the equation below? 0. 36 x = negative 1. 8 0. 36 (divided by 0. 36) x = negative 1. 8 (divided by 0. 36) x = negative 5 Addition Property of Equality Subtraction Property of Equality Multiplication Property of Equality Division Property of Equality.
Answers
The property of equality applied to solve the equation is division property of Equality.
What is the property of equality?Property of equality says that by performing any mathematical operation, of both sides of an expression does not change the original value of the equation.
The equation given in the problem is,
[tex]0.36 x = -1. 8[/tex]
This equation is solved further by dividing both side of the expression with decimal number 0.36 as,
[tex]\dfrac{0.36}{0.36}x = -\dfrac{1. 8}{0.36}\\x=-5[/tex]
Here, the division operation is performed both sides of the equation to solve the equation. This does not change the original value of the equation and gives the value of unknown number.
Thus, the property of equality applied to solve the equation is division property of Equality.
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2,956 divided by 67 estimate
Answers
Answer:
44.11940299 this is the answer
help me to the this question
Answers
Across
1 compass
2 shape
4 two pi to one
6 Pie x radius squared
8. arc
10 Point
11 radius
12 circumference
down
1 Chord
4major arc
5 Radii
7 degrees
9.circle
13 equidistant
hope this helps
Which sampling would be appropriate to survey 120,00 people?
A. 12,000
B. 1,200
C. 120
D. 12
Answers
Answer:
option c
Step-by-step explanation:
120 sampling would be enough
Please mark as Brainliest!!
Simplify (2^9• 3^5) • (2^4•3)^2
Answers
Answer:
[tex]286654464[/tex]
Step-by-step explanation:
first, write the equation:
[tex](2^{9}*3^{5} )*(2^{4} *3)^{2}[/tex]
solve in the parentheses from left to right:
[tex](2^{9} *3^{5} )[/tex]
solve for [tex]2^{9}[/tex]:
[tex]2*2*2*2*2*2*2*2*2=512[/tex]
then solve for [tex]3^{5}[/tex]:
[tex]3*3*3*3*3=243[/tex]
So the equation will be as:
[tex](512*243)*(2^{4} *3)^{2}[/tex]
simplify:
[tex]124416*(2^{4} *3)^{2}[/tex]
solve for [tex](2^{4} *3)^{2}[/tex]:
[tex]2*2*2*2=16\\(16*3)=48[/tex]
complete equation:
[tex]124416*(48)^{2}[/tex]
the answer will be:
[tex]124416*(48)^{2} =\\124416*48*48=\\286654464[/tex]
Please help?
I don’t understand
Answers
Answer:
hi there the correct answer is b
Step-by-step explanation:
Select all the stories that can be represented by the diagram.
Diego spends $1 on 7 Stickers and 3 marbles
Elena spends 57 on 3 notebooks and a $1 pen.
Noah shares 7 grapes with 3 friends. He eats 1 and gives each friend the same number of grapes.
Andre studies 7 hours this week for end-of-year exams. He spends 1 hour on English and an equal number of hours each on math, science, and history.
Lin spends $3 on 7 markers and a $1 pen
Answers
Answer: Choice C and Choice D
========================================================
Explanation:
Choice A doesn't work because it the $1 should be $7 instead.Choice B doesn't work because it should be Elena spending $7 total on 3 notebooks and a $1 pen. The x is the amount per notebook.Choice C does work. If x is the number of grapes Noah gives each friend, then 3x is the total amount Noah gives over. Then 3x+1 is the number of grapes total. That +1 at the end is the grape Noah eats. We end up with 3x+1 = 7 because Noah starts off with 7 grapes.Choice D works also. The x is the number of hours for math, science and history each. So 3x is the combined time of those three classes. Add on 1 to get 3x+1 to represent all 7 hours, ie 3x+1 = 7.Choice E does not work. If it was her spending $7 on 3 markers and a $1 pen, then it would work.Answer:
[] Noah shares 7 grapes with 3 friends. He eats 1 and gives each friend the same number of grapes.
[] Andre studies 7 hours this week for end-of-year exams. He spends 1 hour on English and an equal number of hours each on math, science, and history.
Reasoning:
[✗] The first story, with Diego, does not work because the whole is $1 in the problem and $7 in the diagram.
[✗] The second story, with Elena, does not work because the 7 is ignored entirely and the x becomes a known value, 57.
[✓] The third story, with Noah, does work because he splits seven grapes equally among three friends (the x's) and eats one.
[✓] The fourth story, with Andre, does work because 7 hours were spent studying. One on English and the rest (three subjects) split evenly (x).
[✗] The fifth story, with Lin, does not work because the total is $3 when it should be 7.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
HELP ME ASAP for 37 points!! which expression is equivalent to 14.5d+8.5-1/2d+1/2+2.5d
first one 16.5d+8
second one 16.5d+9
third one 17.5d+8
fourth one 17.5d+9
Answers
Equivalent expressions are expressions with equal values
The equivalent expression is 16.5d+9
How to determine the equivalent expressionThe expression is given as:
14.5d+8.5-1/2d+1/2+2.5d
Express the fractions as decimals
14.5d+8.5-0.5d+0.5+2.5d
Collect like terms
14.5d-0.5d+2.5d+8.5+0.5
Evaluate the like terms
16.5d+9
Hence, the equivalent expression is 16.5d+9
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Answer:16.5d+9
Step-by-step explanation:
A candle burns down at the rate of 0.5 inches per hour. The original height of the candle was 8 inches.
Part A: Write a list of 6 ordered pairs to show the height of the candle in inches (y) as a function of time in hours (x) from the first hour after it started burning. For example, the point (0, 8) would represent a height of 8 inches after 0 hours. Explain how you obtained the ordered pairs.
Part B: Is this relation a function? Justify your answer using the list of ordered pairs you created in Part A.
Part C: If the rate at which the candle burned was 0.4 inches per hour instead of 0.5 inches per hour, would the relation be a function? Explain your answer using input and output values.
Will mark Brainlist!!!
Answers
Answer: PART A.
y= remaining height of candle
x= rate the candle burns down in inches per hour
8= original height of candle
the function would be y=8- 0.5x because the candle starts at a height of 8 feet and loses half an inch per hour.
You can use this function to create ordered pairs by putting in number at x which indicates the time:
x=1
y=8- (.5×1)= 7.5
(1, 7.5)
you can then do this for other numbers and get:
(2, 7.0) (3, 6.5) (4, 6.0) (5, 5.5) (6, 5.0)
PART B.
This equation is a function because all of the x-values had different y-values as seen in the coordinates (1, 7.5) (2, 7.0) (3, 6.5) (4, 6.0) (5, 5.5) (6, 5.0)
PART C.
If the rate was 0.4 inches an hour, it would still be a function because the rate is the only thing that changed making the new function y= 8- 0.4x.This equation would make coordinates of (0,8) (1, 7.6) (2, 7.2) (3, 6.8) and so on with each x value creating a different y value.
Step-by-step explanation: hope this helps
Is it possible to write a polynomial of degree 3 with zeros at 5, 3 and 8i? Explain your reasoning.
Answers
Answer:
No
Step-by-step explanation:
Because if 8i is a zero then -8i is also a zero. That means you now have four zeros, so the function is at least a fourth degree (quartic) function.
It is not possible to write a polynomial of degree 3 with zeros 5, 3 and 8i.
What is degree of polynomial?
A polynomial’s degree is the highest or the greatest power of a variable in a polynomial equation.
The degree of a polynomial is equal to the real zeros of the polynomial. Real zeros of the polynomial are 5 and 3 only. 8i is a complex number. Thus degree of the polynomial is 2.
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I really need help!!! Some please help me.
Answers
Answer:
2
Step-by-step explanation:
5x0.4=2
.4x2=5
Answer:2 pounds
Step-by-step explanation:
Multiply 5 with .4
Solve for a and b
c = 1
Answers
Answer:
a=?,b=?,c=1
1=ab
1xab
=ab
1=a,1=b
=a=1,b=1
People donot use this road very often. change it into passive voice
Answers
Answer:
this road is not used by people very often
10e=1 what does e equal need this asap
Answers
Answer:
To solve for e, divide 10 from each side.. 1 divided by 10 e=0.1
Help quick this is Algebra
Answers
Answer:
D. 4z + 20Step-by-step explanation:
side length of the square : ( z + 5 )
[tex] {z}^{2} + 10z + 25 \\ {z}^{2} + 5z + 5z + 25 \\ z(z + 5) + 5(z + 5) \\ (z + 5)(z + 5) \\ [/tex]
perimeter of the square :
[tex](z + 5) \times 4 \\ 4z + 20 \\ [/tex]
Pls answer w/ clear instructions
Answers
Answer:
7 and 8
Step-by-step explanation:
7^2=49
8^2=64
49+64=113
Answer:
7 and 8
Step-by-step explanation:
Find the mZMNI.
M
15x – 12
L
6x
12x+2
N I
Answers
Answer:
The measure of angle MNI is 134 degrees
Step-by-step explanation:
That angle is equal to the sum of the opposite angles so I found x=7 and when you plug in 7 you get 135
HELP ME WITH A AND B
Answers
Answer:
bike: 4,800cm
go-cart: 3000cm
skateboard: 2743.2cm
scooter: 2590.8cm
Step-by-step explanation:
1) keep in mind: 100in=254cm 12 in=1ft
skateboard: 90ft=1080in=2743.2cm
scooter: 1020in=2590.8cm
bike: 4,800cm
go-cart: .03km=30m=3000cm
Fastest to slowest: bike, go-cart, skateboard, scooter
What is the area of this parallelogram?
A= 19 1/2 ft
A= 42 ft
A= 61 1/2 ft
A= 71 3/4 ft
Answers
Step-by-step explanation:
Parallelogram formula: [tex]A=b(base)h(height)[/tex]
The value 6 is meant to trick you.
The height is 7, and the base is 10 1/4.
Multiply the base and height:
[tex]7 \times 10\frac{1}{4} = 71\frac{3}{4}[/tex]
The area equals: [tex]71\frac{3}{4}[/tex] [tex]ft^{2}[/tex]
In order to join the football club, you have to pay a 120 Dirhams joining fee and pay 200
Dirhams every week. Write this relation in a slope intercept form.
Answers
Answer:
y = 200x + 120Step-by-step explanation:
One off fee is 120 Dirhams and weekly charge is 200 Dirhams.
The equation for this relation is:
y = 200x + 120, where x- the number of weekswhich of the following is the equation of a circle centered at the orgin with radius 6
Answers
Answer:
where h is the x of the center of the circle and k is the y of the center of the circle, and r is the radius. (-4,7) radius is 6 h = -4
Step-by-step explanation:
Evaluate cos 315º without using a calculator.
a
Plz help
Answers
Answer:
O A. -1/2
Step-by-step explanation:
I hope it's help..
Emily is reading a stapled comic, but 4 of
the pages are missing.
Pages 6 and 39 are missing.
Which other pages are missing?
How many pages did the comic have
originally?
Answers
Pages 5 and 40 are missing and comic had originally 40 pages.
How to find the missing number of pages and the number of pages of the comic
Let suppose first that there are no more sheets beyond the sheet containing page 39. A sheet contains two pages, one in front and odd numbered and one behind and even numbered.
If two pages are missing, then another two are missing. According all assumptions, we conclude that pages 5 and 40 are missing and that comic had originally 40 pages. [tex]\blacksquare[/tex]
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The circle below shows the grades scored by students in Mr Halls first period class on a math test.
Based on the information in the hraph if 20 students in me halls third period class take the same test. Which of the following in the best prediction of how many more students will score c on test than. B in his third period class
Answers
Answer:
4 more students
Step-by-step explanation:
50 percent of 20 is 10 and 30 percent of 20 is 6 so 10-6=4
Answer:
4 more studentsStep-by-step explanation:
C grade is 50% and B grade is 30%.
The difference is:
50% - 30% = 20%If the number of students is 20, then the difference is:
20% of 20 = 20*20/100 = 4Using the data provided, what percent of the
sampled streams are polluted?
Answers
Answer:
D. 25%
Step-by-step explanation:
5/20
10/40
15/60
Are all equal to 1/4 or 0.25
To write it as percentage, we times by 100
0.25×100=25%
I don't get what there asking.
Answers
Answer:
86 adults and 270 children
Step-by-step explanation:
Let x = # of adult tickets;
then the number of children tickets is (356-x).
Write the total money equation (revenue equation)
[tex]1.75*(356-x) + 2.25x = 666[/tex] dollars.
From the equation
[tex]x = \frac{666-1.75*356}{2.25-1.75} = 86[/tex]
ANSWER. 86 adults and 356-86 = 270 children.
CHECK.
[tex]86*2.25 + 270*1.75 = 666[/tex] dollars. ! Correct !
Jack is conducting a survey of students in the school. Of the students, 549 prefer vanilla ice cream and 671 prefer chocolate ice cream. What percentage of the total students prefer vanilla ice cream?
Answers
Answer:
45% of students prefer vanilla ice cream.
Step-by-step explanation:
549 + 671 = 1220 total students
549 / 1220 = 0.45 or 45%
Answer:
81.82 or 122.22 one of them sorry I'm not very specific :0
Step-by-step explanation:
What is the angle GXI
Answers
Answer:
60
Step-by-step explanation:
They're made up of two 30 degree angles so it's 60 because 30 + 30 = 60.