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IRISSAK [1]
3 years ago
15

Solve simultaniously 2x-y=3 3x+2y=8

Mathematics
2 answers:
Andre45 [30]3 years ago
8 0
ANSWER: ( 0.75 , 2 )

EXPLANATION:
To find the system of solutions, solve the 2 equations.
(1) Find what you can multiply with to get the same number in the second equation.
(2) Multiply equation by -2
(3) New equation:
-4x - 2y = -6
3x + 2y = 8
(4) Add both equations
(5) New equation:
7y = 14
(6) Divide both sides by 7
(7) New equation:
Y = 2
-
Now find X
(1) Substitute y with a equation
(2) 3x + 2 (2) = 8
(3) 3x + 4 = 8
(4) Subtract 4 both sides
(5) 3x = 4
(6) Divide 3 both sides
(7) x = 0.75
-
PLEASE MARK BRAINIEST :)
Aleonysh [2.5K]3 years ago
8 0
X=3+y/2
X=8–2y/3
Hope this helps.
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You get GPS units from two manufacturers, A and B. You get 43% of your units from A and 57% of your units from B. In the past, 2
defon

Answer:

0.5015 = 50.15% probability that it came from manufacturer A.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Defective

Event B: From manufacturer A.

Probability a unit is defective:

2% of 43%(from manufacturer A)

1.5% of 57%(from manufacturer B). So

P(A) = 0.02*0.43 + 0.015*0.57 = 0.01715

Probability a unit is defective and from manufacturer A:

2% of 43%. So

P(A \cap B) = 0.02*0.43 = 0.0086

What is the probability that it came from manufacturer A?

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0086}{0.01715} = 0.5015

0.5015 = 50.15% probability that it came from manufacturer A.

4 0
3 years ago
HELP ME PLEASE IT¨s MATH
Arlecino [84]

Answer:

V=πr^2h

pi = 3.14

r = 2

r^2 = 4

h = 10

Multiply all the numbers to get the volume.

Or use the formula.

V = 3.14*4*10

V = 125.6 cubic inches

5 0
3 years ago
Can everyone give me an example how you add and subtract and multiply and divide negative numbers please
DaniilM [7]
-1 + 2 = 1 
-1 -1 = -2
-1 x -1 = 1
1 x -10 = -10
5 0
3 years ago
Read 2 more answers
The given tables each show the number of stories completed in the construction of four different high-rise buildings and the num
pentagon [3]

<u>Answer:</u>

The correct answer option is B. Number of Days 120 240 360 480 600 Number of Stories 5 10 15 20 25.

<u>Step-by-step explanation:</u>

We are given some tables showing the number of stories completed in the construction of four different high-rise buildings and the number of days spent working on the building.

We are to determine whether which table represents a linear relationship.

Table B represents a linear relationship since its ratio of number of days to number of stories completed is constant.

Number of Days    120  240  360  480  600  

Number of Stories   5      10     15    20     25

Ratio                        24    24    24    24     24

3 0
4 years ago
Read 2 more answers
Factor the expression completely over the complex numbers.<br><br> y^4+12y^2+36
Brums [2.3K]
Y⁴ + 12y² + 36
Now factorize the expression
y⁴ + 6y² + 6y² + 36
= y²(y² + 6) + 6(y² + 6)
= (y² + 6) (y² + 6)
<span>Now 6 is not the perfect square and according to rule, binomial can not be factored as the difference of two perfect squares.
</span>so multiply both.
(y² + 6)² is the answer.
7 0
3 years ago
Read 2 more answers
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