Use the quadratic formula to determine the roots of the equation y= 2x^2 + 2x -7

Answers

Answer 1

Answer:

1.436 or this=−2.436

Step-by-step explanation:


Related Questions

Which equation can be formulated from this problem situation? Two angles of a triangle measure 60 and 30 degrees. What is n, the number of degrees in the third angle?
A.(60 + 30) - n = 180
B.(60 + 30) + 180 = n
C.(60 + 30) - 180 = n
D.180 - (60 + 30) = n

Answers

Answer:

D.

Step-by-step explanation:

It’s C it’s ok if you don’t believe but adding both the angles then subtracting by 180 would be the answer to the third angle with whatever amount comes out from subtracting ......hope this helps >>3

Solve the system of equations.
57 - 10x = 45
-
- 3y + 10x = -5

Answers

Answer: Step-by-step explanation:

57 - 10x = 45

-10x=-12

x=1.2

- 3y + 10x = -5

-3y+10=-5

-3y=-15

y=5

Answer:

1) 57 - 10x = 45 answer: x=−51/5

2) - 3y + 10x = -5 answer: x=3/10y+−1/2 or y=10/3x+5/3

Step-by-step explanation: Hope this help :D

please help im reallyyyy desperate
NO LINKS OR FILES

Answers

Answer:

(2, -3), (3, -3)

Step-by-step explanation:

y = x^2 - 5x + 3

y = -3

x^2 - 5x + 3 = -3

x^2 - 5x + 6 = 0

(x - 3)(x - 2) = 0

x - 3 = 0 or x - 2 = 0

x = 3 or x = 2

We are given y = -3.

Answer: (2, -3), (3, -3)

Answer:

(2, -3) , (3, -3)

Step-by-step explanation:

One is asked to find what values of the parameter (x) will yield the result (f(x)=-3) if the function (f(x)) is the following,

[tex]f(x)=x^2-5x+3[/tex]

Set this equation up, and solve to find the value of (x) that satisfies this requirement:

[tex]f(x)=x^2-5x+3=-3[/tex]

Inverse operations,

[tex]x^2-5x+6=0[/tex]

Factor, rewrite the quadratic equation as the product of two linear equations,

[tex](x-2)(x-3)=0[/tex]

Therefore the solutions are the following, the (x-coordinate) represents the input, and the (y-coordinate) represents the output.

(2, -3), (3, -3)

Please help please I really need help

Answers

Answer:

C. No, because 10² + 24² ≠ 34²

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Trigonometry

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

a is a leg b is another leg c is the hypotenuse

Step-by-step explanation:

Step 1: Define

Identify variables

a = 24

b = 10

c = 34

Step 2: Check

Verify ΔLMN is a right triangle

Substitute in variables [Pythagorean Theorem]:                                            24² + 10² = 34²Evaluate exponents:                                                                                         576 + 100 = 1156Add:                                                                                                                   676 ≠ 1156

∴ ΔLMN is not a right triangle

Qué número multiplicado por – 10 da 90 DOY CORONA CHIQUILLOS CORAZON Y 5 ESTRELLAS!

Answers

Sería -9 porque
-10 x -9=90

You are choosing between two plans at a health club. Plan A offers an initial membership fee of $75. And you pay $15 per month. Plan B offers an initial membership fee of $20 and you pay $26 a month. How many months are the two clubs the same price?

Answers

Answer:

5 months

Step-by-step explanation:

Let the number of months equalising both plans fee = x

Plan A total fee = 75 + 15x , Plan B total fee = 20 + 26x

Equalise both: 75+15x = 20+26x ; 75-20 = 26x-15x ; 55 = 11x ; x = 55 / 11

x = 5  

Proof : 75 + 15 (5) = 20 + 26 (5) ; LHS 150 = RHS 150

Question 9 (3 points)
Which practice was not a result of scarcity, or shortage of resources, in Arkansas
during World War II?
(A)victory gardens
(B)meat rations
(C)scrap-metal drives
(D)bauxite mining

Answers

Answer: D) Bauxite mining

I did the test:) hope this helps

The number of tickets sold to a play for each showing is 78, 84, 87, 80, 91, 95, and 80. Find the mean, median, mode, and range. *

Answers

Answer:

mean=85

median=84

mode=80

range=17

Step-by-step explanation:

How to Find the Mean

Add up all data values to get the sumCount the number of values in your data set Divide the sum by the count

How to Find the Median

Arrange data values from lowest to the highest value The median is the data value in the middle of the set If there are 2 data values in the middle the median is the mean of those 2 values.

How to Find the Mode

Mode is the value or values in the data set that occurs most frequently.

How to Find the Range

First, put all the numbers in order.Then subtract (take away) the lowest number from the highest. The answer gives you the range of the list.

The diameter of a circle is 12 cm. Find the circumference to the nearest tenth

Answers

Answer:

Step-by-step explanation:

38 or 37.7 when not rounded

hope this helps

An apple-juice container has a tiny hole in it, so it is slowly leaking. If the container leaks three

ounces every 19 minutes, how long will it take for the 16 ounces of juice in the container to leak

out? Write a proportional equation and solve with J.R.'s strategy of using a Giant One. 3 id

14

Answers

Answer:

101.33333 minutes

Step-by-step explanation:

Given :

Leakage rate = 3 ounces per 19 minutes

Time it'll take for 16 ounces of juice in the container to leak out

The leakage rate on ounce per minute :

3 ounces / 19 minutes = 0.1578947 ounce per min

1f 0.1578947 ounces leak out in 1 minutes

16 ounces will leak out in x minutes

Hence ;

0.1578947x = 16 ounces

x = 16 / 0.1578947

x = 101.33335 minutes

OR :

3 ounces = 19 minutes

1 ounce = (19 / 3) = 6.333333 minutes

16 ounces = (15 + 1) ounce

15 ounces = 3 * 5

Hence, 15 ounces will leak in (19 minutes * 5) = 95 minutes

1 ounce = 6.33333 minutes

Hence,

16 ounces will leak in (95 minutes + 6.33333 ounces) = 101.33333 minutes

HENCE, All 16 ounces will leak out in 101.33333 minutes

yo i need help due at midnight

Enter the given equation in exponential format.

log base2 x = r

Answers

Answer:

2^r = x

Step-by-step explanation:

giving brainliest and if u cant read down it says: if the spinner is spun 540 times throughout the day, how many dog or cat toys are expected to be given away? please help.

Answers

Answer:

324/540 cats and dogs should be expected to be given away

Step-by-step explanation:

First, write the fraction of the cats on the spinner plus the dogs on the spinner.

[tex]\frac{4}{10} + \frac{2}{10} = \frac{6}{10}[/tex]

Now, we have to make the denominator 540 but we have to make it equal so you divide.

540 ÷ 10 = 54

So, our fraction should look like this.

[tex]\frac{x}{540}[/tex]

Now, multiply 6 × 54 = 324

[tex]\frac{324}{540}[/tex] is our answer

Have a great day!

The dog or cat toys are expected to be given away = 378

What is probability?

Probability is simply how likely something is to happen. Whenever we're unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are.

If the spinner is spun 540 times throughout the day.

Total fraction of the cat and dogs together,

= 5/10+2/10

=7/10

Divide the 540 into 10 equal parts,

= 540/10

=54

let 'x' dog or cat toys are expected to be given away

So, x/540 = 7/10

x= 54*7

x= 378.

Hence, dog or cat toys are expected to be given away = 378/540

Learn more about this concept here:

https://brainly.com/question/15721135

#SPJ2

pls help. this is also math if you can help tysm

Answers

Answer:

a,d,e,f

Step-by-step explanation:

Trust me

will name brainliest

Answers

Answer:

a=12

Step-by-step explanation:

We must use SOH, CAH, TOA

SOH= Sin0=opp/hyp

CAH=Cos0=adj/hyp

TOA= Tan0=opp/adj

Since we have opposite and hypotenuse we use Sin ratio, in this case,

sin30°= [tex]\frac{a}{24}[/tex]

[tex]\frac{1}{2}[/tex]=[tex]\frac{a}{24}[/tex] we cross multiply

[tex]\frac{2a}{2}[/tex]=[tex]\frac{24}{2}[/tex]divide both sides by 2 to get a by itself

a=12

Answer:

a = 12

Step-by-step explanation:

To find a, we will use the trigonometric ratio of Sin, since the opposite side of the angle given needs to be found out and the hypotenuse is given;

Sin(30) = [tex]\frac{a}{24}[/tex]

Sin(30) * 24 = a

12 = a

Hope this helps!

11x + 2 = 2x -7
Please explain how you did the work and how you got your answer

Answers

Hi I just typed the question on desmos if you would like me to explaining out word by word I can also I got -1

Please help me
and no sites or links, just the answer

Answers

Answer:

1.5 km per hour

Step-by-step explanation:

you have to do the km you need to travel over the time you have. then you divide to get 1.5 km per hour.

Answer:

1.5

and it said not to include units.

Step-by-step explanation:

R * 2 = 3

   /2      /2

R = 3/2

3/2= 1.5

R = 1.5

Help me with pre algebra worth 50 points

Answers

The total number of rocks collected:

r + 2r + 2r - 5

Rocks collected by Maria and Javier:

3r

The difference between the number of rocks collected by Pablo and Maria:

r - 5

The sum of rocks collected by the boys:

4r - 5

The number of rocks collected by Pablo and Maria:

r + 2r - 5

Mary is making a pinata that has a ball-like shape. The pinata has a surface area of
60 square feet. Use the formula for the surface area of a sphere:
S=471?
to find the radius of the pinata in feet.

Answers

Answer:

2.19 ft

Step-by-step explanation:

The formula for the surface area of a sphere = 4πr²

Surface area of the sphere = 60 ft²

The formula to find the radius of a sphere

= √A/4π

= √60/4 × π

= 2.19 ft

Therefore, the radius of the pinata = 2.19 ft

Lexie is arranging 3 different books in a row on a shelf. Create a sample space for the arrangement of a biography (B), a mystery story (M), and a comic book

Answers

Answer:

d m c

d c m

m d c

m c d

c d m

c m d

6 ways

Step-by-step explanation:

Two yellow marbles, three pink marbles and five blue marbles are in a bag, two marbles are randomly drawn, what is the probability of drawing two yellow marbles if the first one is not placed back into the bag before the second draw?

Answers

Answer:

1/45

Step-by-step explanation:

P(Y,Y) = 2/10 x 1/9

= 1/45

helppppp pleaseeeee

Answers

Answer:

1) 10

2) 3

Step-by-step explanation:

4x = 40  

x= 10

x^2 = 9

x=3



Find the area of a rectangular with dimensions of 9yd and 2yd

Answers

Answer:

[tex]18yd^{2}[/tex]

Step-by-step explanation:

Area = length * width

Area = 9 * 2

Therefore, area is [tex]18yd^{2}[/tex]

Answer:

C

Step-by-step explanation:

A=wl

A=2yd*9yd

A=18[tex]yd^{2}[/tex]

Solve the system by substitution. y = -7x + 4 10x – 10y = 40​

Answers

Answer:

point form

(1,-3)

equation form

x=1 y= -3

Step-by-step explanation:

Suppose that g(x) = f(x) + 6. Which statement best compares the graph of g(x) with the graph of f(x)?

The graph of g(x) is the graph of f(x) shifted 6

A.units to the left
B.units up
C.units to the right
D.units down

Answers

Answer:

c. units to the right

Step-by-step explanation:

it would be units to the right because it's +6 meaning it moves to the right.

Answer:

6 units upwards

Step-by-step explanation:

Check if x=-1 is a solution to x3 + 3x^2 = x+3. Which statement do you get?
A. 1=1
B. 0=0
C. 4= 4
D. 2 = 2

Answers

Answer:

D. 2 = 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

x³ + 3x² = x + 3

x = -1

Step 2: Check

Substitute in x:                                                                                                  (-1)³ + 3(-1)² = -1 + 3Evaluate exponents:                                                                                         -1 + 3(1) = -1 + 3Multiply:                                                                                                             -1 + 3 = -1 + 3Add:                                                                                                                   2 = 2

need help finding the area

Answers

[tex]area \: \: of \: \: the \: \: given \: \: figure \: \: = \: \: 108 \: unit {}^{2} [/tex]

Express the following in the form a + bi, where a and b are real numbers:
[tex] \sqrt{60i - 11} [/tex]

Answers

The equivalent of the complex number expression is [tex]\sqrt{60i - 11}[/tex] is 2 + 15i

How to rewrite the expression?

The complex number expression is given as:

[tex]\sqrt{60i - 11}[/tex]

Rewrite as:

[tex]a + bi = \sqrt{60i - 11}[/tex]

Take the square of both sides

[tex]a^2 + 2abi - b = 60i - 11[/tex]

By comparison, we have:

a^2 - b = -11

2ab = 60

Divide both sides by 2

ab = 30

Using a graphical tool, we have:

a = 2,b = 15

So, we have:

a + bi = 2 + 15i

Read more about complex numbers at:

https://brainly.com/question/10662770

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The length of a rectangle is 1 meter less than twice the width. Find the dimensions if the area is 45 square meters.

Answers

Answer:

Width = 5

Length = 9

Step-by-step explanation:

what is the answer to this question 600-9484

Answers

Hello~

The answer is

-8884

Brainliest please!

Ary~

[tex]\boxed{-8884}[/tex] ✅

Step-by-step explanation:

[tex]600 - 9484 \\ = - 8884[/tex]

[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]

PLS NEED HELP ASAP 20 POINTS!! I GIVE BRAINLIEST!!

Consider the function f(x). Select all of the following that include a horizontal compression of f(x).
A) 2f(x)
B) f(3x)
C) -f(x)+1
D) f(0.4x) - 1
E) f(6x) +9
F) -f(0.12x)

Answers

Answer:

Well if i dont know the function then how do I know but I will answer for f(x)=1

Step-by-step explanation:

they would all be horizontal compressions

Answer:

B. f(3x)

E. f(6x)+9

Step-by-step explanation:

I got it from math nation (otherwise known as algebra nation from my teacher)

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