Mathematics High School

Q8. Look at the image.

Answers

Answer 1

Answer:

Option B

Step-by-step explanation:

Quadratic equation given in the question is,

[tex]x^2+4x+2=0[/tex]

By comparing this equation with the standard quadratic equation,

[tex]ax^2+bx+x=0[/tex]

[tex]a=1,b=4[/tex] and [tex]c=2[/tex]

By using quadratic formula to get the roots of the given quadratic equation,

[tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

By substituting the values of a, b and c in the formula,

[tex]x=\frac{-4\pm\sqrt{4^2-4(1)(2)}}{2(1)}[/tex]

[tex]x=\frac{-4\pm\sqrt{16-8}}{2}[/tex]

[tex]x=\frac{-4\pm\sqrt{8}}{2}[/tex]

[tex]x=\frac{-4-\sqrt{8}}{2},\frac{-4+\sqrt{8}}{2}[/tex]

[tex]x=-3.414,-0.5857[/tex]

[tex]x=-3.41,-0.59[/tex]

Therefore, Option B will be the answer.

Related Questions

A rectangle has an area of 70 m2 and dimensions, in meters, of x and x + 2. Estimate each dimension of the rectangle to the nearest meter.

Answers

Answer:

-7 and - 9

Step-by-step explanation:

Area of rectangule is length *width

Find the area of the circle.
Use 3.14 for it.
(
d = 8 cm
A = [?] cm2
A=Tr2

Answers

What the make no sense but I believe it is 50.24 hope that helps

am
Solve the proportion.
14
y +9
10
15
y = [?]
Enter

Answers

Answer:

Step-by-step explanation:

The volume of a cylinder is 62.8 cubic meters and the radius is 2 meters.
Find the height of the cylinder. Round to the nearest meter.

Answers

Answer:

Height: 5meters

Step-by-step explanation:

Using the formula h= V over pie/3.14r^2 = 62.8 over 3.14 times 2^2 gives us 4.99747.

help me with this question

Answers

Answer:

960 cm³ I think it may be correct

please, help me with this fast!! I'm giving points!!!!

Answers

Answer:

Step-by-step explanation:

c circle

The answer is c :)))))))

Find the area of the trapezoid shown below

Answers

Answer:

A=a+b

Step-by-step explanation:

The golden ratio is denoted by which Greek letter?
A. Beta
B. Omega
C. PHI
D. PSI

Answers

the golden ratio is denoted by which greek letter?

Φ phi

does anyone know how to solve this problem?

Answers

7? Is seems that the 4 is being added with +2 when it got bigger so I’m thinking the 5 would be the same thing +2 equals 7..that’s what I’m thinking

What is the value of y?

Answers

Answer:

y = 66

Step-by-step explanation:

Exterior angles thm:

y + y - 31 = y + 35

2y - 31 = y + 35

2y - y = 35 + 31

y = 66

In a standard deck of card there are 52 cards total. Find the number of possible 5 hand cards that contain 3 queens and 2 kings.

Answers

Answer:

The probability of choosing 3 kings and 4 queens out of the 8 (4+4) kings and queens is given by 0.42857

Step-by-step explanation:

There are 4 queens and 4 kings in a deck of 52 cards. So we have to choose 5 cards having 3 queens and 2 kings out of the 52

Therefore the combinations can be written like this 8C5= 56 ways

And the probability this can be chosen is given by

4C3*4C2/8C5

=4*6/56

=24/56

=0.42857

The probability of choosing 2 kings and 3 queens out of the 8 (4+4) kings and queens is given by 0.42857 or 24/56

A cylinder has a base radius of 2 meters and a height of 2 meters. What is its volume
in cubic meters, to the nearest tenths place?

Answers

the answer is 25.1 meters3

Which equivalent expression can be used to solve the quotient 2/3 divided by 4/5

Answers

Answer:

5/6

Step-by-step explanation:

Divide it

The equivalent expression can be used to solve the quotient 2/3 divided by 4/5 is 5/6.

What is division?

Division is a method of distributing a group of things into equal parts. It is one of the four basic operations of arithmetic, which gives a fair result of sharing.

The equivalent expression that can be used to solve the quotient 2/3 divided by 4/5 is;

[tex]= \dfrac{\dfrac{2}{3}}{\dfrac{4}{5}}\\\\=\dfrac{2}{3} \times \dfrac{5}{4}\\\\=\dfrac{1}{3} \times \dfrac{5}{2}\\\\=\dfrac{5}{6}[/tex]

Hence, the equivalent expression can be used to solve the quotient 2/3 divided by 4/5 is 5/6.

Learn more about division here;

https://brainly.com/question/22850643

#SPJ2

8 POINTS I don’t understand this can anyone help?? If you answer all my other questions on BrainlyI will give you 30 points:)

Answers

Answer:

I remember my teacher saying that when you get the answer you have to * when you get the answer

Find the distance from the point (0,0) to the line y = x – 6. Round your answer to the nearest tenth.

Answers

Answer:

Step-by-step explanation:

answer:
6 units

step-by-step explanation:
using desmos
the y-intercept is vertical, and the x-intercept is horizontal
it touches the y-intercept at -6
distance cannot be negative

HELPPPPPPPP Write the standard form of an equation

Answers

Answer:

See the Answer Below:) I am certain this is the answer

Step-by-step explanation:

Where can you buy a ruler that is 3 feet long?

Answers

It’s called a yard stick, and at a hardware store.

Answer:

At a yard sale

Step-by-step explanation:

Aunt Betty uses oranges and pineapples to make 12 pounds of fruit salad. If oranges weigh 0.5 pounds each and pineapples weigh 2 pounds each, and she uses 21 fruits in all, find the number of oranges and the number of pineapples she uses

define variables and write two equations to model the situation described in the problem

Answers

Answer:

pecuniary purveyors organization irreversible

Can you please help me out????

Answers

Answer: B.) 19.6 feet.

Draw a right triangle ABC. AB will represent the ladder, with point A being on the ground and point B being against the building.

Label: AC=6 ft, m<A=73° and <C is a right angle.

Use the trig mnemonic "SOHCAHTOA" to identify that BC/AC=tan<A. So BC, which is the height the ladder reaches, equals AC*tan<A=6*tan(73)=19.6 feet.

Step-by-step explanation:

A line is reflected. Which of these could be the result?
O A.
B.
O c.
/
OD.

Answers

Answer:

Step-by-step explanation:

I believe the answer would be C because its the only actual line on a graph.

A Is a line segment

D is a ray

(I'm not sure what the exact name for the one on graph B is.)

Answer:

the answer ic C!

Step-by-step explanation:

AP EX

pls answer i need the answer

1 ticket
2 tickets
3 tickets
4 tickets

Answers

Answer:

Step-by-step explanation:

Answer:

2 tickets

Step-by-step explanation:

a + c = 5

9a + 4c = 30

let a = 5-c

substitute:

9(5-c) + 4c = 30

45 - 9c + 4c = 30

45 - 5c = 30

-5c = -15

c = 3

a = 2

Find x

Secant tangent angles

ILL MARK BRAINLIEST!!!

Answers

Answer:

[tex]x = \frac{50 + 92}{2} = 71[/tex]

Answer asap i got school in one hour and forgot to do this (im putting all my points for this)

Answers

Answer:

I belive the answer for the first box is 9.67

I belive the answer for the second box is 71.

I hope I helped

ello i need help -^-

Answers

Shahdvdbnsvavalkavsvs

Answer:

d =90 e=52 f=52

Step-by-step explanation:

The angle that are crosppsinding have equal angle.

like f=e.

IF YOU AWNSER WROnG YOu ARE DUmmmm. Convert to slope intercopt form 4x + 3y = 6

Answers

Answer:

The slope-intercept form is

, where

is the slope and

is the y-intercept.

Step-by-step explanation:

Find the common difference (d) of the arithmetic sequence. It it is not arithmetic, enter "None" in the box. 10, 2, -6, -14, -22, ... d =?

Answers

Answer: d = -8

==========================================================

Explanation:

Pick any term that isn't the first term. Then subtract off the previous term. If we get the same result each time, then the sequence is arithmetic, and that result is the common difference.

term2 - term1 = 2-10 = -8term3 - term2 = -6-2 = -8term4 - term3 = -14-(-6) = -14+6 = -8term5 - term4 = -22-(-14) = -22+14 = -8

We get -8 each time, so the sequence is arithmetic with common difference d = -8. It says to add -8 to each term to get the next term. This is the same as subtracting 8 from each term to get the next term.

Note how:

10-8 = 22-8 = -6-6-8 = -14-14-8 = -22

Question 3 (1 point)
Mrs. Randolph has 39 math books and 57 science books that she needs to put in boxes. Each box can hold 8 books. How many
boxes does Mrs. Randolph need? Explain.

Answers

The answer is 12.
57 + 39 = 98
98 divided by two is equal to 12.

This can also be shown by multiplication. 12x8=96
I hope this helped you! :)

One gallon of gasoline in Buffalo,new York costs $2.29 .Across the border in Toronto,Canada, one liter of gallon costs $0.91

Answers

Complete question :

One gallon of gasoline in buffalo, New York costs $2.29. In Toronto, Canada, one liter of gas costs $0.91. There are 3.8 liters in one gallon. How much does one gallon of gas cost in Toronto?

Answer:

$3.458

Step-by-step explanation:

Given that :

Cost per gallon in Buffalo, New York = $2.29

Cost per Litre in Toronto, Canada = $0.91

Number of litres in 1 gallon = 3.8

The cost per gallon in Toronto, Canada will be :

3.8 * cost of a Litre

3.8 * $0.91 = $3.458

Hence, cost of a gallon in Toronto, Canada = $2.73

Plz help me this would mean the world plz

Answers

Answer:

x = 2

4 x 4 = 16

25% of 16 = 4

2 x 2 = 4

i chose 2 bc i said it x -= 25% of the larger squares area meaning it would be 2

Step-by-step explanation:

When you spin a rectangle, what 3D figure do you get? cylinder prism cone sphere

Answers

Answer:

A cylinder

Step-by-step explanation:

When you rotate the rectangle you are make a circle but since its volume the original height of the rectangle is the height of the circle which would mean a cylinder.

Answer:

CYLINDER

Step-by-step explanation:

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