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
Sholpan [36]
2 years ago
5

Solve the system of equations algebraically. 3x+8y=−6 x−y=9 (x,y)= (

Mathematics
1 answer:
vova2212 [387]2 years ago
4 0

Step-by-step explanation:

x=y+9

substitute

3(y+9)+8y=-6

3y+27+8y= -6

13y = -6 -27

13y= -33

y = -33/13

x = -33/13 + 9

You might be interested in
The formula for the area of a circle is A = πr^2. Which equation shows the formula in terms of r?
Julli [10]
A=\pi r^2\\\\\pi r^2=A\ \ \  |\text{divide both sides by}\ \pi\\\\r^2=\dfrac{A}{\pi}\ \ \ \ |\text{square root both sides}\\\\r=\sqrt{\dfrac{A}{\pi}}
6 0
3 years ago
The area of the shaded triangle is 5x2+3x-4. What is the area of the entire figure?
Phoenix [80]
The answer will be 2 cuz you multiply them at the answers
3 0
3 years ago
For safety reasons, 4 different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills
Evgen [1.6K]

Answer:

<em>99.93%</em>

Step-by-step explanation:

<u>Probability of Independent Events</u>

Given the probability of success of each detector is 0.84 independently of the others, their combined success/failure probability can be computed with the product rule.

We can calculate the required probability by using the binomial distribution, but it's easier to calculate the probability of the negated event an subtract from 1.

We want to know the probability that a least one of the 4 systems detects the occurrence of theft. That probability is the sum of the probabilities that one of them, two of them, three of them or all of them succeed. The negated event is that NONE of them actually detects the theft. Being p the individual probability of success, p=0.84. Being q the probability of failure, q=0.16.

The probability that none of the systems detect the theft is

P(0)=q^4=0.16^4=0.00065536

Thus, the probability that at least one of the systems detect the theft is

P(x\geq1)=1-P(0)=1-0.00065536=0.9993

That means a 99.93%

3 0
2 years ago
Help please!:( <br><br> right answers only please
bagirrra123 [75]

Answer:

100 dollars a month I think

3 0
2 years ago
Read 2 more answers
How many solutions does the system of equations have?<br> 0<br> 1<br> 3<br> 4
myrzilka [38]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • When a number is written in scientific notation, could zero ever be in the ones place of the first factor? Which digits, if any,
    12·1 answer
  • Simplify square root 50y^15 (inside the radical) assume y represents a positive real number
    7·1 answer
  • What’s the answer to this?
    10·1 answer
  • Volume: 72 ft3 Find the missing dimension. Round to the nearest tenth.
    15·1 answer
  • In the data table shown, if x = 20, then y=
    5·2 answers
  • Which equation would shift the parabola down 3 units? A) y = x2 B) y = x2 - 3 C) y = x2 + 3 D) y = (x + 3)2
    8·2 answers
  • FOR 40 POINTS<br> The is used to measure volume.<br> choices:<br> meter<br> gram<br> liter
    15·1 answer
  • Find the 83rd term of the arithmetic sequence -23, -26, -29, I need help
    9·2 answers
  • _____=amount received after redemption -amount invested
    5·2 answers
  • Expand &amp; simplify<br> 6(3x+3)−3(4x−2)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!