Mathematics High School

Solve.
x2+7x+3=0




x=7±37√2



x=7±61√2



x=−7±37√2



x=−7±61√2

Solve.x2+7x+3=0x=7372x=7612x=7372x=7612

Answers

Answer 1
the answer is the first choice
Answer 2

Answer:

[tex]x = \frac{ - 7± \sqrt{37} }{2} [/tex]

Step-by-step explanation:

[tex] {x}^{2} + 7x + 3 = 0[/tex]

[tex] \frac{ - b± \sqrt{ {b}^{2} - 4(ac) } }{2a} [/tex][tex] \frac{ - 7± \sqrt{ {7}^{2} - 4(1 \times 3)} }{2 \times 1} [/tex][tex]x = \frac{ - 7± \sqrt{37} }{2 \times 1} [/tex][tex]x = \frac{ - 7± \sqrt{37} }{2} [/tex]Hope it is helpful....

Related Questions

A board is 2/3 yards long Jackie cuts the board into pieces that are 1/6 yards long how many pieces are there

Answers

Answer:

4

Step-by-step explanation:

2/3 ÷ 1/6 =

2/3 x 6/1 =

12/3 = 4

Also you can do:

2/3 = 4/6

there are 4- 1/6 in 4/6

If my answer is incorrect, pls correct me!

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

-Chetan K

help me with my math please

Answers

Answer:

Volume of a cylinder = πr²h

Given

V=81π

r=3

find h

Making h the subject

h= V/πr² = 81π/π(3)²

h= 81/9

h= 9cm

please help it is due in 10 minutes​

Answers

Answer:

1.  X= 4

2.  X= 1

3. X= 3

4. X= 5

5. X= 7

6. X= -3/4

7. X= 6

8. X= 5

Step-by-step explanation:

Answer:

Look below :)

Step-by-step explanation:

1.x=4

2.×=1

3.x=3

4.x=5

5.x=7

6.x=-0.75

7.x=6

8.x=5

Hope this helps :)

ASAP
-WILL MARK BRIANiST

Answers

Answer:

5/18

Step-by-step explanation:

(5/6)/3

5/6 X 1/3

5/18

a: 5/12

5/6 x 1/2 = 5/12

Find the slope of the line.

Answers

the slope of the line is 1/3

Answer:

slop = 1/3

Step-by-step explanation:

slop= y2-y1 / x2-x

= 3-2/6-3

=1/3

a quadrilateral has angle measures of 35.8°, 25.4°, and 178°. What is the other angle measure?

Answers

Answer:

120.8°

Step-by-step explanation:

the total angle sum is of 360 so we add and subtract

35.8+25.4+178= 239.2

360-239.2= 120.8

so the missing angle measure is 120.8°

A bag contains 5 black marbles, 7 blue marbles, 3 green marbles, 4 red marbles, and 1 white marble. A marble is selected and then replaced and a second marble is chosen. What is the probability of selecting a black marble and then a red marble?

Answers

Answer:

2/25

Step-by-step explanation:

It will be 20/400 + 12/400

=2/25

Answer:

2/25

Step-by-step explanation:

ons
1
Nos
y= X+3
y= X+3
How many solutions

Answers

Infinitely many solutions because the lines are the same

Find the value of x in the isosceles triangle shown below.
13
13
20
10

Answers

Answer:

X=12

Step-by-step explanation:

Khan Academy

if an instrument measures in units of 1 then any value between which two values would be measure as 5?

a) 3.5 and 6.5
b) 4 and 6
c) 4.5 and 5.5
d) 5 and 6

Answers

Did you get the answer yet?

i need the full work shown and solution!

Answers

Answer:

the diameter of Britain flag is given = 28mm

so the radius = 14mm

perimeter of the flag occupied = 2πr = (2×22/7×14) mm

= 88mm

area of the flag= πr^2 = (22/7 × 196) mm^2 = 616 mm^2

Hope it helps

Help......................

Answers

Answer:

mean: 68.95 (69 rounded up)

median: 69.5

range: 11

Step-by-step explanation:

Answer: Mean is 69

               Median is 69

              Range is 11

           

             

Step-by-step explanation:

Mean is 69 because the is 68.95 and I rounded it    

What is the product of the complex numbers below?
(3-9i)(6-i)

Answers

Answer:

(9-57i)

Step-by-step explanation:

We need to find the product of the given complex number i.e.

(3-9i)(6-i)

It can be solved as follows :

(3-9i)(6-i) = 3(6) +3(-i) +(-9i)(6) + 9i(i)

= 18-3i-54i+9i²

We know that, i² = -1

So,

= 18-3i-54i+9(-1)

= 18-57i-9

= 9-57i

So, the product of the given complex number is (9-57i).

I will mark as brillianest...plzz solve the question.

Factorize:
1) 6x²+x-2
​

Answers

Answer:

( 2 − 1 ) ( 3 + 2 )

Step-by-step explanation:

6 ² + − 2

6x² + 4 - 3 -2

2 ( 3 + 2 )− 1 ( 3 +2 )

( 2 − 1 ) ( 3 + 2 )

SHOW how to use vertical addition to add 5x^2 - 9x - 8 + (3x -6 + 2x^2) DO NOT SOLVE

Answers

Answer:

okay

Step-by-step explanation:

5. What does ! mean in a math problem?

It is an exciting problem.

Subtract each number in sequence from that number to 1.

Divide each number in sequence from that number to 1.

Multiply each number in sequence from that number to 1.

Add each number in sequence from that number to 1.

Answers

Answer:

multiply each number in sequence from that number to 1

Answer:

C.Multiply each number in sequence from that number to 1.

Step-by-step explanation:

Marking brainliest

Please help!

Answers

Answer:

The equation for the speed of the train is: 162 = 3x

I think the speed of the train is 54 miles per hour

Step-by-step explanation:

We know that:

y = distance in miles

x = speed of train (miles/hour)

t = time traveled from the departing station (hours)

The equation: y = xt is given, we can therefore substitute the give values:

y = xt or tx

162 = 3x (This would be the equation)

Now we can find x by diving 3 on both sides of "="

162/3 = x

54 = x (This would be the speed of train)

Hope this helps!

X=y/t or 162/3
Speed is 54mph

hello please help i’ll give brainliest

Answers

Answer:

b. option Is the correct answer

A rectangle is measured by 2 1/3 inches and 2 1/3 inches what is the area

Answers

Answer:

5.44444442889 or 5 [tex]\frac{4}{9}[/tex]

Step-by-step explanation:

Just multiply the 2 numbers together

Answer:

[tex]2\frac{1}{3}^{2}[/tex] or 49/9 inches squared

Step-by-step explanation:

you have a square if those lengths are correct, and the formula for the area of a square is Bh=A B=base length (side on bottom), h=height (vertical side), and A=area, so 2 1/3 * 2 1/3 or 2 1/3^2

if that doesnt make sense, message me and i will try to help you more

Need help on this! Maybe be marked brainliest? :)

Answers

Answer:

3 1/4 hours

Step-by-step explanation:

1 hour + 1/4 hour + 3/4 hours = 2 hours

3/4 hour + 2/4 hour = 1 1/4 hours

2 hours + 1 1/4 hours = 3 1/4 hours

PLEASE HELP ME
Answer the question in the picture.

Answers

Answer:

3^-2=1/9

3^0=1

3^1=3

3^2=9

Answer:

3^-2 = 1/9

3^0 = 1

3^1 = 3

3^2 = 9

Mark has a piece of wood that is 11 1/4 ft long. He cuts the piece of wood into as many 2 1/2 -ft pieces as he can. How long is the leftover piece of wood?

Answers

Answer: 9

Step-by-step explanation:

11 2/4 - 2 1/2

46/4 - 5/2

23/2 - 5/2

=18/2= 9

The answer to this question is 8 3/4.
70/8 when simplified is 8 3/4.


Two apples cost 60 cents. How much do five cost?
cost?​

Answers

Answer:

5 apples cost = 150 /-

Step-by-step explanation:

Two apples cost = 60 /-

Then 1 apple cost = 60 ÷ 2

= 30

∴ 1 apple cost = 30 /-

Then 5 apples cost = 30 × 5

= 150

∴ 5 apples cost = 150 /-

Hope it is helpful....

(4pq+3q)² - (4pq - 3q)²​

Answers

Answer:

48pq².

Step-by-step explanation:

(4pq+3q)² - (4pq - 3q)²​

This is the difference of 2 squares so we can use the identity

a^2 - b^2 = (a - b)(a + b):

(4pq+3q)² - (4pq - 3q)²​

= (4pq + 3q - (4pq - 3q)(4pq + 3q + (4pq - 3q)

= (4pq + 3q - 4pq + 3q)(4pq + 3q + 4pq - 3q)

= 6q * 8pq

= 48pq².

Answer:

48pq²

Step-by-step explanation:

As we know,

(a + b)² = a² + 2ab + b²

and

(a – b)² = a² – 2ab + b²

So,

(4pq+3q)² - (4pq - 3q)²​

= [(4pq)² + 2 X 4pq² X 3q + (3q)²] – [(4pq)² -  2 X 4pq² X 3q + (3q)²]

= (16p²q² + 24pq²+ 9q²) – (16p²q² – 24pq²+ 9q²)

= 16p²q²+ 24pq²+ 9q² – 16p²q²+ 24pq² – 9q²

= 24pq² + 24pq²

= 48pq²

The point E(-2, 1) is rotated 90° counterclockwise around the origin. What are the coordinates of the resulting point, E′?

Answers

Answer:

jdhsvsvsjqkwsbs sbwjwisnsbbß

Principal Leroy Jenkins wants to build a circular garden in the school courtyard. The garden will have a diameter of 20 feet. Principal Jenkins will put a fence around the garden to protect the plants. How much fencing should Principal Jenkins purchase?

Answers

Answer:

62.8ft

Step-by-step explanation:

we are to determine the circumference of the garden

circumference = πD

= 3.14 x 20 = 62.8 ft

In ΔMNO, n = 78 cm, o = 14 cm and ∠M=12°. Find the length of m, to the nearest centimeter

Answers

Answer:

64

Step-by-step explanation:

i calculated using https://www.calculator.net/triangle-calculator.html :/

Answer:

[tex]m=64[/tex]

Step-by-step explanation:

[tex]m^2=n^2+0^2-2n~0~ co~12[/tex]

[tex]= 78^2+14^2-2*78*14~co ~12[/tex]

m= [tex]\sqrt{78^2+14^2-28*78 ~co~12}[/tex]

[tex]m=64[/tex]

---------------------------

hope it helps....

have a great day!!

nswer the next two que
A particle travels across a detector, following a path given by:
9x - 4y + 2 = 0
The slope of the graph of this line, to two decimals, is

Answers

Answer: 639

Step-by-step explanation:

Multiple

What is the y-intercept of the equation below?

2x - 7y = -14

A- (2, 0)
B- (0, -7)
C- (-7, 0)
D- (0, 2)

Answers

Answer:D

Step-by-step explanation:

D D D D D D D D D D D D D D

help, will mark brainliest!! and give 5 stars this is due 2day!!

Answers

11. brother = ???  

???- 12 = 14

14+12=26

brother is 26.

12. 21.35 - 8.95 = 12.4

cost of colored pencils = $12.40

13. 37- 8 = 29

14. $95  - $73 = $22

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