Please help me
Solve the following system of equations and show all work.
Please show all work
Answers
Answer:
-1/2 and -1
Step-by-step explanation:
Our system of equations is:
y = 2x²
y = -3x - 1
We can set the y's equal to each other:
y = 2x² = -3x - 1
Now, we have:
2x² = -3x - 1
Move all the terms to one side by adding both sides by 3x and 1:
2x² + 3x + 1 = 0
We must factor this quadratic. Note that the factoring is:
(2x + 1)(x + 1) = 0
Our solutions are now:
2x + 1 = 0 OR x + 1 = 0
x = -1/2 x = -1
.
Thus, our solutions are -1/2 and -1.
Related Questions
If (x, -1) is a solution to the equation 2x - 3y = 9, what is the value of x?
Answers
Answer:
3
Step-by-step explanation:
Answer:
x=3
Step-by-step explanation:
Bananas are 5 for 79 cents . Isaiah bought 7 bananas. How many did Isaiah spend?
A. $1.58
B. $1.18
C.$1.11
D.$1.01
?
Answers
k) 12y + 15 + y – 3 6y – 9 = y
alguien me puede ayudar por favor?:(
Answers
13y+12,6y−9=y
2 Switch sides.
y=13y+12,6y-9y=13y+12,6y−9
3 Break down the problem into these 2 equations.
y=13y+12y=13y+12
y=6y-9y=6y−9
4 Solve the 1st equation: y=13y+12y=13y+12.
y=-1y=−1
5 Solve the 2nd equation: y=6y-9y=6y−9.
y=\frac{9}{5}y=
5
9
6 Collect all solutions.
y=-1,\frac{9}{5}y=−1,
5
9
Step-by-step explanation:
i dont know what u said so i solved for y
Answer:
y = 1/4
Step-by-step explanation:
Yo no comprehendo espanol mucho, but I'll try
12y + 15 + y - 36y - 9 = y
Rearrange
12y + y (-y) + 15 (-15) - 36y - 9 (+9)= y (-y) (-15) (+9)
12y - 36y = - 15 + 9
-24y = - 6
Divide both sides by - 24 (Take note of the signs (+) (-))
-24y/-24 = - 6/-24
y= 1/4
20 points and brainiest for the correct answer
On a coordinate plane, a line goes through (0, negative 5) and (5, 0).
A system of equations consists of a line s of the equation y = x - 5 that is graphed in orange, and a line t that passes through the points (0, 2) and (8, -4). The equation of line t is y = -[tex]\frac{3}{4}[/tex]x + 2.
What is the solution to this system of linear equations?
Answers
Answer:
4 -1
Step-by-step explanation:
just trust me on this one :)
Ellie took a taxi from her house to the airport. The taxi company charged a pick-up fee of $1.50 plus $5 per mile. The total fare was $76,50, not including the tip. Write and solve an equation which can be used to determine m, the number of miles in the taxi ride.
I dont understand this
Answers
Answer: 1.50+5m=76.50 m=15
Step-by-step explanation:
The required equation is 1.5 + 5m = 76.50 and distance travelled is 15 miles.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions by connecting them with the equal sign = .
Now it is given that,
pick-up fee = $1.50 plus $5 per mile
Since, m is the number of miles in the taxi ride
So, equation for pick-up fee for m miles,
pick-up fee = $1.50 + $5m
Now total fare = $76,50
Thus, required equation to determine m is given as,
1.50 + 5m = 76.50
Subtracting 1.5 both the side we get,
1.50 + 5m - 1.5 = 76.50 - 1.5
⇒ 5m = 75
or, m = 75/5
⇒ m = 15
Thus, the required equation is 1.5 + 5m = 76.50 and distance travelled is 15 miles.
To learn more about equation :
https://brainly.com/question/25271125
#SPJ2
I WILL GIVE BRAINLIEST PLEASE HELPPP
A car travels 180 m southeast in 30 s. What is the average velocity? (Lesson 2.01)
Show your work and include units.
Step 1: write formula
Step 2: list “givens”
Step 3: plug in numbers
Step 4: calculate & write answer
Step 5: add units
Answers
Answer:
Velocity = Distance / Time
v = d/t
v = 180m/30s
v = 60 m/s
The average velocity 60 m/s
Jake is selling cookies there 60 cookies in a package how many cookies are there in three packages ?
Answers
Answer:
180 cookies
Step-by-step explanation:
Levi read 4 books in 16 months. What was his rate of reading in months per book?
Answers
Answer:
0.25
Step-by-step explanation:
What is 345578 divide by 243
Answers
1,422.13169
Explanation:
PLEASE HELP ASAP!!!!!
Answers
Answer:
[tex]\huge\boxed{\sf x = 20}[/tex]
Step-by-step explanation:
=> Since it is an equilateral (Having all angles and all sides equal) triangle, so every angles will be equal to the other.
=> The sum of the measures of interior angles of triangle add up to 180 degrees.
So,
3x + 3x + 3x = 180
9x = 180
Divide both sides by 9
x = 20
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807answer correctly please the test is worth 60 % of my grade
Answers
Answer:
i believe x is 12.
Step-by-step explanation:
three times three is nine, so you multiply four by three to get 12. you can also check your answer by dividing 12 by three and 9 by three to get 4,3 so the answer is correct.
Answer:
x=12
Step-by-step explanation:
How I solved this is by making a proportion with fractions In your first fraction the numerator is 4 and your denominator is 3. In your second fraction your numerator is x and your denominator is 9. You would multiply 4 times 9 then divide by 3 to get your answer. I hope this is correct and good luck!!
PLEASE HELP. Write the equation in slope-intercept form for the line that contains the points
(3,-5) and (5,- 1)
a. y = 2x + 11
b. y = 2x + 1
c. y = 2x - 11
d. y = 2x - 1
Answers
Answer:
y=2x-11
Step-by-step explanation:
Find the sum of the following arithmetic series.
8 +13+ 18+23+ ... + 83
The sum of this series is
(Simplify your answer.)
Answers
Answer:
its literally +5
Step-by-step explanation:
13-8= 5
18-13=5
23-18=5
the question is in the picture
Answers
Answer:
the answer is 15 degree
Answer:
15
Step-by-step explanation:
first i looked at the numbers that weren't X and added up to 30° and subtracted that from 180 because a triangle equals 180. i got 150 and there is in total of 10 x's so i divided 150 by 10 and got 15! have a good day :)
Plzz I need help due today!!!!
Answers
90 ft/h = ____ mi/min
Answers
If you mean hours, and Minutes that is 1 hour and 30 minutes.. s a fraction that is 1 1/2. Or 90/60
Don’t tell me the steps just answer please!!!
Answers
Answer:
A, D, F
Step-by-step explanation:
Please help me!!! will give brainliest
Answers
Answer:
7 1/3
Step-by-step explanation:
Answer:
7 1/3
Step-by-step explanation:
two negatives equal a positive.
new answer:
1 2/3 + 5 2/3= 7 1/3
5+1= 6
2/3+2/3= 1 1/3
6+ 1 1/3= 7 1/3
7 1/3 is your answer.
Hope this helped! (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
have a nice day! ( ﾟдﾟ)つ Bye
Original price: $48; Markup: 12.5%
Answers
Answer:
6.86
Step-by-step explanation:
David deposited $550 in an account that earns 5% simple annual interest.
Richey deposited $550 in an account that earns 5% annual compounded
annually. They leave the money with no withdrawals or deposits for 3 years.
Which statement is true about the two investments after 3 years?
A David will have $31.19 more in his account than Richey has in his
account
B Richey will have $123,69 more in his account than David has in his
account
C Richey will have $4.20 more in his account than David has in his account,
D David will have $82.50 more in his account than Richey has in his
Answers
A restaurant starts with 10 dozen
pieces of cornbread. Every order
receives 2 piece of cornbread. At the
end of their lunch rush, there are 28
pieces of cornbread left. How many
orders did the restaurant take?
Answers
Answer:
48 orders
Step-by-step explanation:
so 10 dozen is 120 because 12(10) is 120. we first subtract 120-28, which is 96. divided 96 by 2 to get 48.
equation: (12(10)-28)/2=x
Answer:
46 orders.
Step-by-step explanation:
(10*12) - 2x = 28
120 - 2x = 28
-2x = 28 - 120
-2x = -92
x = -92/2
x = 46
what is -2(3x+1)+4=17
Answers
Answer:
Exact Form: x= -5/2
Decimal Form: x= -2.5
Mixed Number Form: x= -2 1/2
Step-by-step explanation:
Hope this helps!
The answer is x = -5/2
Keisha has a bag that contains 3 red, 2 orange, 1 yellow, and 2 purple marbles. She will randomly choose 1 marble from the bag. What is the probability that Keisha will choose an orange marble?
a. 1/4
b.3/8
c.1/8
d.2/4
Answers
Explanation- If you count all the marbles you get 8 and there are 2 orange marbles. When you simplify, you can get a 1/4 chance of getting an orange marble.
help..
The length of one side of a shoebox is 8 centimeters more than twice the width. The base of the shoebox has an area of 72 square centimeter.
Write an equation to represent this situation with w representing the width in centimeter
Answers
Answer: [tex]w^2+4w-36=0[/tex]
Step-by-step explanation:
Let w = width of the base of the shoebox.
As per given ,
Length = 8+2w centimeters
Area of base = 72 square centimeter
Area of rectangle = Length x width
[tex]\Rightarrow\ 72=w(2w+8)\\\\\Rightarrow\ 72= 2w^2+8w\\\\\Rightarrow\ 2w^2+8w-72=0\\\\\Rightarrow\ w^2+4w-36=0[/tex]
Required equation: [tex]w^2+4w-36=0[/tex]
please help just download the document, try to complete it and make a question adressing it to me please
Answers
What is 3-9 +8 +9 +9 +9 +9 +9 with an exponent of 2/68 +89=
Answers
Answer: the answer is 2
Step-by-step explanation:
Answer:
the answer is more than 47 *thumbs up*
Step-by-step explanation:
BRAINLIESTTTTTTTTTTTTTTTTTTTT
Answers
Answer:
45
Step-by-step explanation:
38-2+9
Answer:
45
Step-by-step explanation:
38−6÷3+9
38−2+9
36+9
45
Brainlist Please!
30% de que número es 42 ?
Answers
Can you guys help me please
Answers
i hope this helps ! please mark brainliest :?
Answer:
5 hours
Step-by-step explanation:
Equation for Company A: 10+5x
Equation for Company B: 7x
10+5x=7x
5=x
Help please! Thanks, will give brainliest if correct. Answer only if you know this.
Answers
Answer:
The answer is 0.20
Step-by-step explanation:
Answer: 0.20
Step-by-step explanation: