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
Elden [556K]
2 years ago
8

9. What is the value to the solution for the system of equations y = -5X-9 and y = 2x + 5.​

Mathematics
1 answer:
sertanlavr [38]2 years ago
5 0

9514 1404 393

Answer:

  (x, y) = (-2, 1)

Step-by-step explanation:

Equate the two expressions for y.

  -5x -9 = 2x +5

  -14 = 7x . . . . . . . .add 5x-5

  -2 = x . . . . . . . . . divide by 7

Then ...

  y = 2(-2) +5 = 1

The solution is (x, y) = (-2, 1).

You might be interested in
If y= 3x + 6, what is the minimum value of (x^3)(y)?
Rainbow [258]

Answer:

Given the statement: if y =3x+6.

Find the minimum value of (x^3)(y)

Let f(x) = (x^3)(y)

Substitute the value of y ;

f(x)=(x^3)(3x+6)

Distribute the terms;

f(x)= 3x^4 + 6x^3

The derivative value of f(x) with respect to x.

\frac{df}{dx} =\frac{d}{dx}(3x^4+6x^3)

Using \frac{d}{dx}(x^n) = nx^{n-1}

we have;

\frac{df}{dx} =(12x^3+18x^2)

Set \frac{df}{dx} = 0

then;

(12x^3+18x^2) =0

6x^2(2x + 3) = 0

By zero product property;

6x^2=0   and 2x + 3 = 0

⇒ x=0 and x = -\frac{3}{2} = -1.5

then;

at x = 0

f(0) = 0

and  

x = -1.5

f(-1.5) = 3(-1.5)^4 + 6(-1.5)^3 = 15.1875-20.25 = -5.0625


Hence the minimum value of (x^3)(y) is, -5.0625






3 0
3 years ago
If someone could help me it would be awesome
alex41 [277]
The kite is 1500 feet above the ground
3 0
3 years ago
I WILL GIVE BRAINLIEST PLEASE HELP FULLY (pt 2)
Gwar [14]

Answer: What expression can Melanie write to figure out how much her ... Mauricio plans on retiring in 20 years, and he wants to double his money by that time. He has contacted various banks, looking for a CD that compounds interest monthly, and to calculate what annual interest rate he needs, he is using the rule of 72.

Step-by-step explanation: I did what I could man

5 0
3 years ago
Students in a class were surveyed about the number of children in their families. The results of the survey are shown in the tab
ki77a [65]

Answer:

1/5

Step-by-step explanation:

Since the surveys are chosen with replacement (the first one is replaced before the second is chosen), the events are independent.  This means that the probability of both together is the product of each event's probability.

The probability of choosing a survey that indicates 4 children in the family is 8/60, since there are 8 surveys with 4 children out of a total of (9+18+22+8+3) = 60 surveys.

The probability of choosing a survey that indicates 1 child is 9/60, since there are 9 surveys with 1 child out of a total of 60.

Together this gives us

8/60(9/60) = 72/360 = 1/5

3 0
3 years ago
Read 2 more answers
Anyone here a kpop stan?
klasskru [66]
Nooooo but why ? Is it important
3 0
3 years ago
Read 2 more answers
Other questions:
  • Common denominator for 5 and 2?
    14·2 answers
  • Larry and Donna bought a sofa at the sale price of $1,344. The original price of the sofa was $1,920. Find the discount rate
    13·1 answer
  • Choose any three digit number to describe how to find the number that is 10 more
    15·1 answer
  • Two trains leave stations 238 miles apart at the same time and travel toward each other. One train travels at 95 miles per hour
    6·1 answer
  • Victoria whit used 578 kw-hr of electricity in December the rate is 9.1 cents per kw-hr find the amount of her electric bill
    8·1 answer
  • A pencil Company used 60 grams of rubber to make 10 pencils how many pencils can be made with 50 grams of rubber
    14·1 answer
  • If (he)={(0,1),(2,3),(-4,1)}, find h^-1(x)
    14·1 answer
  • What is the slope of the line shown below?
    9·2 answers
  • Serena bought 3/4 of a kilogram of nuts. she delivered them evenly among 4 containers.
    11·1 answer
  • Plz solve this question urgent ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!