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
PilotLPTM [1.2K]
2 years ago
7

C an some one help me​

Mathematics
1 answer:
Pavlova-9 [17]2 years ago
8 0

Answer:

b

Step-by-step explanation:

You might be interested in
Elimination method: ax+by=r, -bx+cy=s
Alex17521 [72]
\left[\begin{array}{ccc}ax+by=r\\\\-bx+cy=s\end{array}\right]

Isolate x for ax+by=r

x= \frac{r-by}{a} ; a \neq 0

Subsititute x= \frac{r-by}{a}

-b \frac{r-by}{a} +cy=s

Isolate r for : -b \frac{r-by}{a}+cy=s

r=- \frac{as-acy-b^2y}{b} ; a \neq 0;b \neq 0

For x : \frac{r-by}{a}

Subsititute r = - \frac{as-acy-b^2y}{b}

x= -\frac{as-acy-b^2y}{b}/a

x =  \frac{cy-s}{b}

The solutions to the system of equations are:

r= -\frac{as-acy-b^2y}{b} and <span> x = \frac{cy-s}{b}
</span>
hope this helps!


3 0
2 years ago
To find 12×13 I double 13 and halve 12 and multiply what's an exspression for this
Brilliant_brown [7]
Expression: x × y = x/2 × 2y
4 0
3 years ago
Solve x^2-8x=3 by completing the square. Which is the solution set of the equation
kkurt [141]

Answer:

{-0.36, 8.36) to the nearest hundredth.

Step-by-step explanation:

x^2 - 8x = 3

(x - 4)^2 - 16 = 3

(x - 4)^2 = 19

Taking square roots:

x - 4 = +/- √19

x =  4 +/- √19

x = {-0.36, 8.36} to nearest 1/100.

4 0
3 years ago
Read 2 more answers
Explain the function y=-(x+2)^2-3
lesantik [10]

Answer:

warwar

Step-by-step explanation:

3 0
2 years ago
Which pairs of numbers have the same absolute value? How are these numbers related?
NeTakaya

Answer:

4=4

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • In a busy period you are required to use the support
    9·1 answer
  • Explain why 323.202 is least<br> than 323.21 even though 202 is Grater than 21
    14·2 answers
  • Use the factor theorem to determine which of the following is a factor of f(x)=x^3+5x2-15x+9
    14·1 answer
  • What is the value of x
    9·2 answers
  • A soft drink company wants to increase the volume of the cylindrical can they sell soft drinks in by 25%. The company wants to k
    8·2 answers
  • Find the prime factorization of 1,148 using a factor tree
    14·1 answer
  • Ms Kowal invests £6000 in a simple interest account. After 5 years her investment has earned £450 interest. What rate of interes
    8·1 answer
  • Easy 10 points (question is down below, thank you.)
    7·1 answer
  • Find the value of each variable<br> x= <br> y=
    7·1 answer
  • Which of the following fractions have repeating decimal representations? Which have terminating decimal representations?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!