Mathematics High School

2x^2 + 7x + 9 = 0
Factoring them

Answers

Answer 1

Answer:

Step-by-step explanation:

2x^2+7x+9=0

The answer is x= -7±i√23 /4

Related Questions

If a worker can do his job in 5 hours, and a student can do the same job in 8 hours, what part of the work is left to finish after two hours of work? NOTE: THEY WORKED TOGETHER
ANSWER: FRACTIOn

Answers

Answer:

Part of work left to finish after two work hours is 7/20

Step-by-step explanation:

Firstly, we need to calculate their joint work rate

That will be;

1/(1/5 + 1/8) = 1/(13/40) = 40/13

This means that they will complete the task in 40/13 hours

1 whole part takes 40/13

x part will take 2 hours

x * 40/13 = 2

40x = 26

x = 26/40

So the part that will be completed in two hours is 26/40

This means that the part left to complete will be:

1 - 26/40 = 14/40 = 7/20

Answer:

7/20

Step-by-step explanation:

you need to find what is left, not how much they did (which is 13/20)

3) What percent of 80 is 52?​

Answers

Answer: 65 percent is the answer

Identify the y-intercept from the ordered pairs.

(-12, 10) (0, -6)

Answers

it would be (0,-6) because that’s the y coordinate

Please help me with this question... please

Answers

I think it would be the last option

Step-by-step explanation:

:)

Answer:

Yes, every x value has only one y value

Step-by-step explanation:

You can visually see this by graphing the points and it passes the vertical line test.

What kind of Function is this y=x2-3x-4?

Answers

A liner one function

You have $25 to treat your friends to ice cream. Each cone costs
$2.95. How many friends can you buy an ice cream for?

Answers

Answer:

9

Step-by-step explanation:

25 divided by 2.95= 8.50

Round 8.50 to get 9

Hope this helped. have a good day

Answer: 8

Step-by-step explanation: 25 : 2,95 = 8,4

So just 8 friends

A triangle with vertices at A(0, 0), B(0, 4), and C(6, 0) is dilated to yield a triangle with vertices at A′(0, 0), B′(0, 10), and C′(15, 0). The origin is the center of dilation. What is the scale factor of the dilation?

Answers

9514 1404 393

Answer:

  2.5

Step-by-step explanation:

The scale factor will be the ratio of any two corresponding non-zero coordinates:

  B'y/By = 10/4 = 2.5

  C'x/Cx = 15/6 = 2.5

The scale factor is 2.5.

solve for z
−p⋅(51+z)=dz+84

Answers

Answer:

z≠0

Step-by-step explanation:

dz+84=-p(51+z)

dz+84-84=-p(51+z) -84

dz=-p(51+z) -84

dz/z=-p(51+z) /z-84/z

The value of z is (84 + 51p) / (d - p).

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

-p(51 + z) = dz + 84

Remove the parentheses.

-51p - pz = dz + 84

Subtract dz on both sides.

-51p - pz - dz = 84

Add -51p on both sides.

--pz - dz = 84 + 51p

z (-p + d) = 84 + 51p

z = (84 + 51p) / (d - p)

Thus,

The value of z is (84 + 51p) / (d - p).

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

correct answer= MARKED BRAINLIEST

Answers

Answer: the answer would be 24 = m

Step-by-step explanation:

I got that answer be dividing both 2.5 and 15 and figured out that 1 hour equals 6 mile so that would make it so that it is 24

not sure exactly, but the answer for m on the top is 6.

PLEASE HELP WILL MARK BRAINLIEST!!!

c/8=9 c=what?

Answers

Answer:

72

Step-by-step explanation:

c/8=9 so 8x9 is 72 so 8 divided by 72 is 9

Shelby spends 2/7 of her salary on her monthly rent and has $3455 left over. How much does she spend on her rent each month?

Answers

Answer:

$1382

3455 is 5/7 of salary so divide 3455/5 = 691

then multiply 691x2 because rent is 2/7 of salary

691x2 = 1382

Which expression is equivalent to square root of 80

Answers

Umm it shows that you have gotten that question correct as the answer is, 2^4•5

Answer: 2nd one down

Step-by-step explanation:

An electrician charges $15 plus $11 per hour. Another electrician charges $10 plus $15 per hour. Which of the systems of equations below correctly represents this situation if x represents the number of hours and y represents the total cost?

Answers

y=11x+15

y=15x+10

This is the system of equariob

In the coordinate plane, line p has a slope of 8 and y-intercept (0,3). What are the slope and y-intercept of line r?

Answers

Answer:

y  = 8x + 3

Step-by-step explanation:

The line we are describing here is line p;

 slope of line p = 8

  y- intercept = (0,3)

y-intercept of a line is the point where it crosses the y-axis. At this point, the x = 0

So;

  Slope of the line = 8

   y-intercept  =  3

Equation of the line;

       y  = mx + c

y and x are the coordinates

m is the slope

c is the y-intercept

      y  = 8x + 3

PLEASE HELP ME ANSWER THESE 2 QUESTIONS!! I beg you

Answers

Answer:

mgmgmmbmb

Step-by-step explanation:

40404

44

4

5

5

Hamburger costs $4.28 a pound at the market. If Jada
bought 3.5 pounds, what was the cost?

HELPPP ASSAAPPP

Answers

14.98 should be the answer if I’m not mistaken

There's a room, the height is 12, length is 14, and width is 10. What is the total area of the 4 walls?

Answers

Answer:

Hello Everybody Love Pizza

Step-by-step explanation:

A line with a slope of -4 has a coordinate of (0,3). If the other coordinate is (6,t),
find the value of t. Plz show work

Answers

Answer:

Alrighty! So this is what we know:

Slope (m) = (-4)

Co-ordinate (0,3)

Co-ordinate 2 (6,t)

t = ?

Let's find our equation...

y=mx+b <-- just plug what we know in...

3=(-4)0+b

3=0+b

b=3

We just found b! woohoo

Now what is t? t is a value we need to know WHICH IS the y value of a co-ordinate that corresponds to when x is 6, as we know a co-ordinate is expressed as --> (x value, y value).

SO-

t=y

plug it in our equation...

y=mx+b

t=(-4)x+3

t=(-4)(6)+3

t=(-24)+3

t=(-21)

SOOOOOOOO WE HAVE OUR T!! just write a therefore statement like "therefore the value of t is -21." and you're set! hope this helped, any questions? ask in the comment section. :)

Step-by-step explanation:

answer pls so i can pass

Answers

Answer: rounded: 2400

60 * 40

Actual: 2508

Step-by-step explanation:

Answer:

My estimation is 2,400 because 60 x 40 = 2,400.

The answer is 2,508

Step-by-step explanation:

I did two digit multiplication its kinda hard to explain with words but there's videos on it! :)

Answered by:

matthewarvin06

Hello! Thanks for reading my answer! If this helped, a brainliest or a thank you would be appreciated! If you have any further questions, please let me know! I'd be happy to help. Thanks! :)

11. What is the value of x in this equation? 2x + 2 = -46​

Answers

Answer:

3x +2=14

subtract 2 from both sides

3x + 2-2=14-2

3x=12

Step 2:Divide both sides by 3.

3x/3 = 12/3

x = 4

Step-by-step explanation:

find the measure of angle 1

Answers

Answer:

123

Step-by-step explanation:

180-57=123

OK OK ok

Answer:

123°

Step-by-step explanation:

A flat line is 180° so that means 57-180=123 so therefore the angle is 123°

(16:8) +5 +7 (26-13)

Answers

Answer:

198

Step-by-step explanation:

hope this helps

198 is the right answer.

Im timed! What is the slope of the line represented by the equation f(t)=2t−6?

a
The slope is −6 and the y-intercept is 2.
b
The slope is 2 and the y-intercept is −6.
c
The slope is 2 and the y-intercept is 6.
d
The slope is 6 and the y-intercept is 2.

Answers

Answer:

B

Step-by-step explanation:

Same thing but with t instead of x

(a) What is the equation of the line, written in point-slope form? Show your work.
Step 1: Find the slope. m = y2 – y1 = _____- ____ = ______
x2 – x1 -
Step 2: Use point (4,15) and slope (m) from step 1 and complete the equation in point-slope form.
y-y1 = m (x-x1) y - _____ = _____ (x - ______)

Answers

Answer:

comments maxed out

Step-by-step explanation:

Anyone know this? Ill give brainliest if right pls help ^^!!!

Answers

Hi I think it is (-85)
-39 should be the answer
46-(-30)=85

What is the value of x?​

Answers

Answer:

x = 7°

Step-by-step explanation:

The sum of all octogon's angles equals 1080°

Let's solve your equation step-by-step.

8(16x + 23) = 1080

Step 1: Simplify both sides of the equation.

8(16x + 23)=1080

(8)(16x) + (8)(23) = 1080(Distribute)

128x + 184 = 1080

Step 2: Subtract 184 from both sides.

128x + 184 − 184 = 1080 − 184

128x = 896

Step 3: Divide both sides by 128.

128x/128 = 896/128

x = 7°

What's the linear equation?

Answers

If you are speaking in point-slope form, y=(3/4)x-1 because, to get your slope you go up and over, and your y-intercept is -1.
y=3/4x -1 is the equation :)

Order the lengths 7/8 feet, 0.8 feet, and 15/16 feet from least to greatest.

Answers

15/16, 7/8, .8
because 7/8=0.875 and .875>.8
15/16 = 0.9375
0.9375> 0.875 > .8

Answer:

Step-by-step explanation:

Convert fractions to decimals

7/8 = 0.875

0.8

15/16 = 0.9375

0.8 < 0.875  < 0.9375

0.8 < 7/8 < 15/16

Given f(x) = 5(x + 1) + 16, what is the value of x when f(x) = 1?

Answers

Answer:

x=26

Step-by-step explanation:

substitute x with 1: 5(1)+1+16

Answer:

x = -4

Step-by-step explanation:

The functional notation () simply means that you replace in the function with whatever values are in the domain. So  () = 5 ( + 1) + 16 means that the solution set will contain the answer for every value of  .

In the question,  () = 1. So you set the function equal to 1, then solve for :

() = 1 = 5 ( + 1) + 16.

Add  −16  to both sides: − 15 = 5 ( + 1)

Divide both sides by  5: − 3 = + 1

Add  −1  to both sides: − 4 =

Please pls pls pls ANSWER ASAP!!! :P
:)

Answers

Answer:

20-15z

Step-by-step explanation:

-1+21-15z

20-15z

Answer:

Step-by-step explanation:

I think its 20−15z

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