Find the x-intercepts for the parabola defined
by this equation:
y=-2x^2- 4x + 6
Write your answer as two ordered pairs:

Answers

Answer 1

Answer:

(-3,0) ; (1,0)

Step-by-step explanation:

We have to solve the associated equation:

-2x^2 -4x + 6 = 0

-x^2 - 2x + 3 = 0

x^2 + 2x -3 = 0

Δ/4 = 1 + 3 = 4

x1 = -1 + 2 = 1

x2 = -1 -2 = -3


Related Questions

Please help ASAP I’ll mark you as brainlister please

Answers

Answer:

2 x 2=4 on each side so 4 x 2=8

5 x 2=10

10 x 4=40

Step-by-step explanation:

Write an equation of the line below ?

Answers

Answer:

-2/6 x -2

Step-by-step explanation:

the slope is -2/6 and y int is -2

The scatter plot shows the amount of sleep of aria got the night before a test and her test scores. What type of relationship do u see between amount of sleep and test scores?

Answers

Where’s the scatter plot

Which number has a 3 with a value that is 100 times greater than the value of 3 in 20.342 ?
1) 307.18
2) 423.06
3) 108.173
4) 36.25

Answers

Answer:

108.173

Step-by-step explanation:

108.173 has a 3 with a value that is 100 times greater than the value of 3 in 20.342

Help please .............

Answers

Answer:

i believe it would be D

Step-by-step explanation:

please help me
( will give brainliest )

any links or websites commented will be reported !

Answers

1.I can’t see all exsercie help

Write and graph the inverse variation in which y = 12 when x = –4. URGENT!!!!!!!

Answers

[tex]12=\frac{k}{-4} \\k = -48[/tex]

Therefore: [tex]y=\frac{-48}{x}[/tex]

Juan went to the store to buy a plant for his mother, but forgot to ask which kind to get. Out of 30 plants, eighteen of them are a kind that his mother would want. If Juan chooses one randomly, what is the probability that he will choose a kind that his mother would want?

Answers

Answer:

Probability [Randomly choose plant Juan's mother want] = 3 / 5

Step-by-step explanation:

Given:

Total number of plant in store = 30 plants

Number of plant kind Juan's mother want = 18

Find:

Probability [Randomly choose plant Juan's mother want]

Computation:

Probability of an event = Number of favorable outcome / Total number of outcomes

Probability [Randomly choose plant Juan's mother want] = Number of plant kind Juan's mother want / Total number of plant in store

Probability [Randomly choose plant Juan's mother want] = 18 / 30

Probability [Randomly choose plant Juan's mother want] = 3 / 5

Which equation can be used to solve for the value of x?

Answers

option : c. 2x + 15 = 145

cuz, the angles are vertical opposite angles

Answer:

2x + 15 = 145

Step-by-step explanation:

vertical angles are congruent

=> (2x + 15)° = 145°

The box-and-whisker plot summarizes student scores on a physical fitness test. Students receive an award for scores at or above the upper quartile. What is the lowest score a student can get to receive an award?

Answers

Answer:

74

Step-by-step explanation:

To receive an award, student must obtain a score at or above the upper quartile, from.tye boxplot, the upper quartile is depicted by the endpoint of the box. Hence, the upper quartile of the distribution is 74. Hence only stude Ts who score 74 and above will receive an award Hence, the minimum score required is 74.

Answer quickly!!!!!!!!

Answers

Answer:

c: 8   i'm sure

Step-by-step explanation:

Because we count where the line stops is 8 squares which means it's 8

Answer: b = sqrt(61)

Explanation:

x^2 = 6^2 + 5^2
x^2 = 36 + 25
x^2 = 61
x = sqrt(61)

HELP!!! PRECALC Continuity problem, will give brain liest, thank you!!!

Answers

Answer:

Go to algebraic calculator

Step-by-step explanation:

Then go to Microsoft calculator it has everything

brainliest?

x+3x=40 what is x please

Answers

Answer:

x=10

Step-by-step explanation:

1. Combine like terms

4x=40

2. Divide 4 both sides to x alone

4x/4=40/4

x=10

Answer:

10

Step-by-step explanation:

x+3x=40

4x=40

x=40/4=10

The equation of a parabola is y=x^2–4x+13. Write the equation in vertex form.

Simplify any fractions.

Answers

Answer:

y = (x - 2)² + 9

Step-by-step explanation:

To obtain the equation in vertex form use the method of completing the square.

Add/ subtract ( half the coefficient of the x- term)² to x² - 4x

y = x² + 2(- 2)x + 4 - 4 + 13

  = (x - 2)² + 9 ← in vertex form

Answer:

vertex form : y=(x-2)^2+9

Step-by-step explanation:

To convert a parabola from standard form y=x^2-4x+13 to vertex form, we complete the square.

first, complete the square using the x-terms, use the constant term to adjust and make a perfect square.

y=  x^2-4x+4   +  9

Factor the first three terms on the right-hand side.

y=(x-2)^2 + 9

the resulting express is then the vertex form, which means that

the vertex is at (x-2) = 0, x=2, and at y=9.  

...........................................................
.

Answers

Answer:

3hope it help

Step-by-step explanation:

Find the value of r.

Answers

Answer:

r = 10.5

Step-by-step explanation:

using the Pythagorean theorem:

(7 + r)² = 14² + r²

49 + 14r + r² = 196 + r²

subtract r² from both sides of the equation:

14r + 49 = 196

subtract 49 from both sides:

14r  = 147

divide both sides by 14:

r = 10.5

What value of x makes the 2 triangles congruent by HL? Find the length of CB

Answers

Step-by-step explanation:

here's your solution

==> Both traingle are congruent

==> BC = BD. [ c.p.c.t ]

==> x + 8 = 3x - 14

==> x - 3x = - 14 - 8

==> - 2x = - 22

==> x = 22/2

==> x = 11

now CB = x + 8 = 11 + 8

CB = 19

hope it helps

Help me please! Only if you know:)

Answers

Answer:

a,b,c,d

Step-by-step explanation:

ajjskakskskkdkdks

kaitlin received a $70 gift card for a coffee store. she used it in buying some coffee that cost $7.69 per pound. after buying the coffee, she had $39.24 left on her card. how many pounds of coffee did she buy?

Answers

Kaitlin bought 4 pounds of coffee.

70-39.24=30.76
30.76 ÷ 7.69= 4

PLZ HELP I BEG UU !! 50 POINTS AND BRANLIEST>

Answers

Answer: 102.5

Step-by-step explanation:

Area of triangle: 8*6=48, 48/2=24

Area of semicircle: 2pir^2=2pi(5)^2=157

Because its semi circle it is 157/2 which equals 78.5

Total area:24+78.5=102.5

Answer:

102.5

Step-by-step explanation:

Semi circle = 78.54 ≈ 78.5

Using formula A = πr²

Area triangle = 24

Using formula A = 1/2(bh)

Sum = 78.5 + 24 = 102.5

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Use the Law of Cosines to find a. Round answer to the nearest tenth

Answers

Answer:

Step-by-step explanation:

$10,000 at an annual rate of 7%, compounded semi-annually, for 2 years

Use the compound interest table to find each balance

Will give brainliest 5 stars and thanks

Answers

Answer:

[tex]\$13,107.96[/tex]

Step-by-step explanation:

Since interest is compounded semi-annually (half a year or 6 months), in a spawn of 2 years, the interest will have been compounded 4 times. As given in the problem, each time the interest is compounded, the new balance will be 107% or 1.07 times the amount of the old balance.

Therefore, we can set up the following equation to find the new balance after 2 years:

[tex]\text{New balanace}=10,000\text{ (old balance)}\cdot 1.07\cdot 1.07\cdot 1.07\cdot 1.07,\\\text{New balanace}=10,000\cdot 1.07^4=\boxed{\$13,107.96}[/tex]

What is the volume of the figure down below?

Answers

The answer is C. All calculations of a cone or the cone equal up to 353.77. Hope this helps!

Answer:

C is correct....

Good Luck!!!

I need help again plz...

Answers

I’m pretty for sure it’s B

Area=10mmx18mm=
Please help

Answers

Step-by-step explanation:

if area is = 10mm *18mm = 180mm2

answer this for points and brainilest

Answers

Answer:

e = -2

Step-by-step explanation:

Hey man, I got straight A's in math all year so here's the answer!

Good Luck! :)

I really need help this is hard

Answers

Answer:

y = 3x + 3

Step-by-step explanation:

Y intercept is 3 so that's at the end of the equation. Input the points and that equation fits.

Need help !

Is it linear , quadratic, exponential

Answers

Answer:

Exponential

Step-by-step explanation:

So lets look at the table.

When x = 1, y = 3

When x = 2, y = 9.

Hmmm, this doenst seem like x+number=y. It doesnt seem like a quadratic, where the values go up, then down, then up again. Or vise versa.

So this rules out linear and quadratic, for the x doesnt change by a constant, or change the direction of y.

This leaves exponential or none of the above.

When x = 3, y = 27

When x = 4, y = 81

This seems like a exponent, since:

3 to the first power is 3

3 to the second power is 9

3 to the third power is 27

and 3 to the fourth power is 81

Answer:

exponential function

Hope this helps! ;)

21/24 x 16/24, guys plz help..

Answers

Answer:

g00gle

Step-by-step explanation:

click new tab and type in 21/24 x 16/24

The circumference of a circle is 9π m. What is the area, in square meters? Express your answer in terms of π

Answers

Answer:

[tex]20.25\pi\:\mathrm{m^2}[/tex]

Step-by-step explanation:

Formulas to know:

Area of a circle: [tex]A=r^2\pi[/tex]Circumference of a circle: [tex]C=2r\pi[/tex]

Since we know the circumference, we can use formula for the circumference of a circle to find the circle's radius:

[tex]9\pi=2r\pi,\\9=2r,\\r=4.5[/tex]

Now we can plug in [tex]r=4.5[/tex] into the formula for an area of a circle:

[tex]A=4.5^2\pi=\boxed{20.25\pi\:\mathrm{m^2}}[/tex]

Answer:

20.25 pi

Step-by-step explanation:

The circumference of a circle is given by

C = 2 * pi *r

9 pi = 2 * pi *r

Divide each side by 2pi

9pi / 2 pi = 2 pi r / 2 pi

4.5 = r

Now we can find area

A = pi r^2

   = pi ( 4.5)^2

     20.25 pi

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