Mathematics High School

Please help me

Solve the following system of equations and show all work.

Please show all work

Please Help Me Solve The Following System Of Equations And Show All Work. Please Show All Work

Answers

Answer 1

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

Can you guys help me please

Answers

y = 0 + 7x

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

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

Don’t tell me the steps just answer please!!!

Answers

Answer:

A, D, F

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

C it’s always c. When in doubt always chose c

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

Answer- a. 1/4
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.

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:

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 is the correct answer

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

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:

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:

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!


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!

~AH1807

please help just download the document, try to complete it and make a question adressing it to me please

Answers

the picture is blank :(

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]

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

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


Levi read 4 books in 16 months. What was his rate of reading in months per book?

Answers

4/16 = 0.25 books per month

Answer:

0.25

Step-by-step explanation:

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

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:

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

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:

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

Original price: $48; Markup: 12.5%

Answers

Answer:

6.86

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

answer 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!!

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

So the answer to this question is you have the negative and positive side amd it wild be to the left of that

Answer:

4 -1

Step-by-step explanation:

just trust me on this one :)

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 :)

What is 345578 divide by 243

Answers


1,422.13169

Explanation:

Plzz I need help due today!!!!

Answers

A is increasing , b is maximum , c is decreasing, and d is minimum

30% de que número es 42 ?​

Answers

The anwser is 12.6 i’m most definitely sure
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