3x+y=15
3x-y=15 (using elimination method)
Answers
Answer:
x = 5
y = 0
Step-by-step explanation:
3x + y = 15
3x -y = 15
Add the two equations;
6x = 30
Inverse operations;
6x = 30
/6 /6
x = 5
Back substitute;
3(5) + y = 15
15 + y = 15
y = 0
Answer:
Step-by-step explanation:
Related Questions
Which line is the graph of y= -2x+2? D B A C
Answers
7x = 7.7 help please
Answers
Answer: X=1.1
Step-by-step explanation: Have a brilliant day- Lily (^_^)
Write the equation of a line (y=mx+b ) that has the following characteristics:
Line passes through (2,− 6) and (3,− 3)
Answers
Answer:
y = 3x - 12
Step-by-step explanation:
slope:
(-3 - (-6)) / (3 - 2)
3/1
= 3
y int = 12
necesito ayuda en algo
Answers
Someone help me with number 7 please
Brainiest answer to ever is first
Answers
Answer:
C
Step-by-step explanation:
C. Is the correct answer because the lower the layer, the older it is. For example, Sandstone is older than shale since sandstone is below shale. Since Limestone is below shale, shale is YOUNGER than limestone.
Evaluate each expression for the given value(s) of the variable(s). 2b + 9 when b = 3
Answers
Answer:
15
Step-by-step explanation:
substitute the value of the variable into the equation and simply
asap... plz can you do these for me
Answers
Given:
The graph of a quadratic function [tex]y=x^2-4x+3[/tex].
To find:
(a) The coordinates of the turning point.
(b) The roots of the equation [tex]y=x^2-4x+3[/tex]
Solution:
(a)
From the given graph it is clear that first the graph is decreasing after that it is increasing. So, the minimum point is the turning point.
The turning is at (2,-1) because the distance between the turning point from the y-axis is 2 and from the x-axis is 1 in the downward direction.
Therefore, the coordinates of the turning point are (2,-1).
(b)
The x-intercepts are the roots of an equation because roots are the x-coordinates of the points where the graph intersect the x-axis.
From the given graph it is clear the graph intersect the x-axis at x=1 and x=3.
Therefore, the roots of the given equation are 1 and 3.
Are the chocolates heavier or lighter than the weight stated on the label? Answer with
h
for heavier or
l
for lighter.
Answers
Answer:
what label?
Step-by-step explanation:
Can you maybe add a picture?
Thanks
Answer:
L
Step-by-step explanation:
if the chocolate was heavier it wouldn't fit in the wrapper properly. its more likely for it to be lighter that heavier.
How does the expression |9 -(-5)| relate to the numbers
-5 and 9 on the number line?
A) The expression shows that 9 is greater than -5.
B)The expression shows that -5 is to the left of 0
and 9 is to the right of 0 on the number line.
C) The expression represents the sum of -5 and 9.
D)The expression represents the distance between
-5 and 9 on the number line.
Answers
Answer:
to me B makes the most sense
Step-by-step explanation:
hope this helps :)
All of the following could be rewritten as an addition problem of two integers with the same sign except _____.
-9 - (-12)
-9 - 12
-12 - 9
12 - (-9)
Answers
Answer:
Answer is - 9 + 12 because they have different signs in front of each integer. (if that is what the question means)
Step-by-step explanation:
Negative sign x negative sign = positive sign
-9 - (-12) = -9 + 12
-9 - 12
-12 - 9 = -9 - 12
12 - (-9) = 12 + 9 = 9 + 12
PLZ HELP QUICK 50 PTS IF U ANSWER which expression is equivalent to -12(3x-3/4)
Answers
Answer: −36x+9
Step-by-step explanation:
This is the simplified form. Still the same equation but put differently.
Mike took a taxi from his home to the airport. The taxi driver charged an initial fee of 6plus3 per mile. The total fare was $24, not including the tip. How many miles did Mike travel by taxi on this ride?
A 2
B 6
C 8
D 10
Answers
Answer:
6 miles.
Step-by-step explanation:
To solve this problem, lets make an equation in slope-intercept form (y = mx + b)
The initial fee is $6. This is our y-intercept (b) as it is unchanging.
Our slope (m) would be $3, as it changes value per mile, which will be represented by x.
$24 was the total fare, so this is our y.
We have:
24 = 3x + 6
Subtract 6 from both sides.
24 - 6 = 3x + 6 - 6
We get:
18 = 3x
Divide by 3 on both sides.
18/3 = 3x/3
We get:
6 = x
So, Mike traveled 6 miles.
I would appreciate brainliest, if not that's ok!
A cylinder cooler has a diameter of 30inches and a height of 24 inches.Runners on a Marathon can use cone shaped cups to get a drink from the cooler.if the cups have a diameter Of 3 inches and a height of 4 inches,about how many full cups would be able to be filled from the cooler?Estimate useing 3.14 for pi.
Answers
Answer:
600 cups
Step-by-step explanation:
Can somebody tell me which one it is? options are (BE, CF, DG, GF)
Answers
Answer:
CF
Step-by-step explanation:
Mark as brainliest please
A family of 5 drove to a concert. They paid $4 one time for parking and all of their tickets were the same price. They paid $99 total. What equation would represent this situation?
Answers
Answer:
5 + (18,8 × 5) = 99
Explaination
one ticket costs: (99$ - 5$) ÷ 5 = $18,8
Complete the sentence by using always sometimes or never a parallelogram is a trapezoid
Answers
Answer:
Parallelogram is never a trapezoid
Step-by-step explanation:
Given
Shapes: Parallelogram and Trapezoid
Required
Compare both shapes
The properties for comparison of both shapes are:
In a parallelogram: It has 4 sides and opposite sides are parallel.
In a trapezoid: It has 4 sides, 2 of which are parallel while the other two are not.
Hence, the word that completes the sentence is never.
Use a model to solve nine multiplied by four sixths. Leave your answer as an improper fraction.
A. 36/6
B.13/6
C.36/54
D.13/15
Answers
How many solutions does this system of equations have?
Answers
Answer:
1 solution
Step-by-step explanation:
A system of linear equations has no solution when the graphs are parallel.
4r + 10 = -26
What is the answer
Answers
Answer:
r = - 9
Step-by-step explanation:
Given
4r + 10 = - 26 ( subtract 10 from both sides )
4r = - 36 ( divide both sides by 4 )
r = - 9
Heya, could someone help me figure this out? I'm kinda stuck on this question :p
Answers
Answer:
-0.5Step-by-step explanation:
to understand thisyou need to know about:algebraPEMDASgiven:v=u+atu=2a=-5t=½let's solve:substitute the given values : v=2+(-5)×½v=2+(-2.5)v=-0.5y=-6x-4 as integer form
Answers
Answer:
y=-24
Step-by-step explanation:
hope this will help you
Mrs. Martinez spent $15.25 buying candy for the 17 students in her G
eometry class. If m & m's cost $0.75 and Snickers
cost $1.00 how many of each did she buy?
1st step identify the variables x-m & m's y=Snickers
2nd Step Write 2 Equations x+y=17 0.75x+1.00y-15.25
3rd Step Solve the System using method of your choice SHOW ALL WORK
Xuy-y-17-y
X-17-y
Substitute 0.75(17-y) +1.00y-15.25
12.75-75y+1.00y=15.25
12.75+.25y-15.25
-12.75 -12.75
.25y-2.5
Divide by 25 y 10
Substitute x+10-17 x 7
4th step Give your answer with labels 7 m&m's 10 Snickers
For your benefit write down which problem it sends you to next.
Failure to show all steps will result in points taken off.
You will need to submit your work by taking a picture. You can submit it as a ips.pdf or a picture file. Please it costs 5% of my grade and put step by step on text or paper
Answers
Step-by-step explanation:
If the process is fair, it can be expected to happen about 12.5% of the
time. (0.5)(0.5)(0.5) = 0.125
Step-by-step explanation:
Please help will mark brainliest
Answers
Hope this helps !!!!!
Answer: -3
Step-by-step explanation: Hope I helped! :D
A music collection includes 19 ROCK CDs, 12 COUNTRY CDs, 6 CLASSICAL CDs, and 5 HIP HOP
CDs. What is the probability that a CD randomly selected from the collection IS a classical CD?
Answers
Answer:
6/42 = 1/7
Step-by-step explanation:
Divide the number of events by the number of possible outcomes.
10. If given 4 cups of soda, list two fractional parts that 4 could be
divided into evenly. How do you know?
1.
Fractional part:
2.
Fractional part:
3.
Explain:
Answers
Answer:
2
4
4 1/2 can be evenly divided by 4 by 1 1/8
4 1/2 can be evenly divided by 2 by 2 1/4
Step-by-step explanation:
9. If a person bikes 0.24 miles in 1 minute, how far can they bike in 45 minutes?
10. A test car went 64 miles on 2 gallons in the morning, 16 miles on ½ gallon at noon, and 32 miles on 1 gallon at 5 pm. Is the relationship a proportional relationship?
please answer properly and show or tell me all your work
Answers
Answer:
9. 10.8 miles
10. Yes
Step-by-step explanation:
To solve number 9 I multipled 0.24 x 45 to find the distance the biker can bike in 45 minutes.
Number 10 is yes because the numbers continue proportionaly. If you work it out, you can see that each half gallon takes the car 16 miles. The distances went 16 miles for 1/2 gallon, 32 miles for 1 gallon, would go 48 miles for 1 1/2 gallons, and went 64 miles for 2 gallons.
Hope it helps!
what is the answer?136,88,or 44?
Answers
Answer:
136
Step-by-step explanation:
What is the value of x?
Answers
Answer:
a
Step-by-step explanation:
6^2+8^2=100
sqrt of 100 = 10
Answer:
A. 10
Step-by-step explanation:
Sports of the 25 baseball players on the baltimore orioles 2005 roster, 17 threw right handed, 12 were over 30 years old, and 9 both threw right handed and were over 30 years old. How many players on the team neither threw right handed nor were over 30 years old?
Answers
Answer: 5
Step-by-step explanation:
Let R be the event that players threw right-handed.
Let O be the event that players were over 30 years old.
Given: Total players = 25
n(R) = 17 , n(O) = 12 , n(R and O)=9
According to the probability formula,
n(R or O) = n(R)+n(O)-n(R and O)
⇒ n(R or O) =17+12-9
⇒ n(R or O) = 20
Now , n(neither R nor O) = Total - n(R or O)
= 25-20
=5
Hence, the number of players on the team neither threw right-handed nor were over 30 years old = 5
What is the value ( 1.6 x -0.25) x 4 to the second power
Answers
Answer:
2.56
Step-by-step explanation:
( 1.6 x -0.25) x 4= -1.6
(-1.6)^2 = 2.56