1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aliya0001 [1]
3 years ago
6

30 Points ill mark brainiest, please help.

Mathematics
2 answers:
meriva3 years ago
6 0

Answer:

a = 1, b = -1, c = -2

Or,

a = -1, b = 1, c = 2

Step-by-step explanation:

–2 = –x + x² – 4

x² - x - 4 + 2 = 0

x² - x - 2 = 0

a = 1, b = -1, c = -2

Or,

–2 = –x + x² – 4

-x² + x - 2 + 4 = 0

-x² + x + 2 = 0

a = -1, b = 1, c = 2

melomori [17]3 years ago
5 0

Answer:

Got it!

The given Quadratic Equation is:

-2= -x+x^2-4

i.e, x^2-x-2=0

now we have to compare it to the form ax^2+bx+c=0

by comparing we got a=1,b= -1 and c= -2

in other way around ,when coefficient of x^2 taken as negative then the sign of a,b&c will change ,

as a= -1, b=1 and c=2

✌️:)

You might be interested in
A mother invests $7000 in a bank account at the time of her daughter's birth. The interest is 18) compounded quarterly at a rate
Alex

well, from birth to your twentieth birthday that'll just be 20 years, so

~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$7000\\ r=rate\to 8\%\to \frac{8}{100}\dotfill &0.08\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{quarterly, thus four} \end{array}\dotfill &4\\ t=years\dotfill &20 \end{cases} \\\\\\ A=7000\left(1+\frac{0.08}{4}\right)^{4\cdot 20}\implies A=7000(1.02)^{80}\implies A\approx 34128.07

5 0
1 year ago
The two dot plots show the number of miles ran by 14 students at the beginning and at the end of the school year compare each me
Naddika [18.5K]

The two dot plots are missing, so i have attached it.

Answer:

The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles

Step-by-step explanation:

From the attached image, we are told to compare the means for each plot to the nearest tenth.

Mean = Σx/n

Now, from the image, total number of miles run by the 14 students at the beginning of the school year is;

(1 × 7) + (2 × 8) + (4 × 9) + (4 × 10) + (2 × 11) + (1 × 12) = 133

Mean of miles run at the beginning of the school year = 133/14 = 9.5 miles

Again, from the table, total miles run at the end of the school year = (2 × 8) + (2 × 9) + (4 × 10) + (3 × 11) + (3 × 12) = 143

Mean of miles run at the end of the school year = 143/14 = 10.2 miles

Thus;

The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles

5 0
3 years ago
Michael’s weight can be represented by the expression 72x^5. Al’s weight can be represented by the expression 9x^7.
podryga [215]

Answer:

a) \frac{72x^5}{9x^7}

b) =\frac{8}{x^2}

c), Yes;8x^2

Step-by-step explanation:

Michael's Weight: 72x^5

Al's weight: 9x^7

a) Ratio of Michael's weight to Al's weight: \frac{72x^5}{9x^7}

b) This ratio simplifies to:  \frac{8\times 9x^5}{9x^5\timesx^2}

                                         =\frac{8}{x^2}

c) Yes, If the exponent in each expression were negative, then we have:

Ratio of Michael's weight to Al's weight: \frac{72x^{-5}}{9x^{-7}}

This ratio simplifies to:  8x^{-5--7}=8x^2

The two ratios are not the same.

3 0
3 years ago
Write an equation in slope-intercept form for the line that is parallel to y=−4x−3 and that passes through the point (−2,4).
kirill115 [55]

Answer:

The Correct option is Last one y=-4x-4

Therefore, equation of the line in slope-intercept that passes through (-2,4) and is parallel to the line y=-4x-3 is y=-4x-4

Step-by-step explanation:

Given:

y=-4x-3

To Find:

Equation of line passing through ( -2, 4) and is parallel to the line y=-4x-3

Solution:

y=-4x-3 ..........Given

Comparing with Slope-Intercept form,  

y=mx+c

Where m =slope  

We get

Slope = m = -4

We know that parallel lines have Equal slopes.

Therefore the slope of the required line passing through (-2 , 4) will also have the slope = m = -4.

Now the equation of line in slope point form given by

(y-y_{1})=m(x-x_{1})

Substituting the points and so we will get the required equation of the line,

(y-4))=-4(x-(-2))=-4x-8\\\\y=-4x-8+4=-4x-4\\\\y=-4x-4......Equation\ of\ line

Therefore, equation of the line in slope-intercept that passes through (-2,4) and is parallel to the line y=-4x-3 is y=-4x-4

8 0
3 years ago
Y = x + 2<br> 2x - y = -4<br> Solve the system of equations using substitution.
const2013 [10]
The answer is (-2,0)
8 0
3 years ago
Other questions:
  • Evaluate tan ( cos^-1 ( 1/8 ) ) , giving your answer as an exact value (no decimals)
    13·1 answer
  • Is 7.189 greater than 7.89?
    15·2 answers
  • Eight soccer players share 7 oranges. How would this be as a fraction?
    12·2 answers
  • Can someone help me with my homework please?
    15·1 answer
  • How do you solve for "r" in the literal equation "I=Prt"
    9·1 answer
  • find the coordinates of the point on the directed segment from (3,2) to (6,8) that divides it into a ratio of 1:3.​
    7·2 answers
  • A certain television is advertised as a 55-inch TV (the diagonal length). If the width of the TV is 42 inches, how many inches t
    11·1 answer
  • The Science Club went on a two-day field trip. The first day the members paid $30 for transportation plus $10 per ticket to the
    6·1 answer
  • Convert the temperature from degrees Celsius to degrees Fahrenheit, using the formula below.
    15·1 answer
  • Evaluate<br><br> -4x + 7 for x = -1
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!