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3 years ago

How many solutions does this linear system have?

Mathematics

2 answers:

vagabundo [1.1K]3 years ago

7 0

It is no solution, bc the answer is (0,0)

RoseWind [281]3 years ago

6 0

Answer:

one solution (0,-1)

Step-by-step explanation:

$y=5x-1$

$-15x-3y=3$

LEts solve for x and y, Substitute 5x-1 for y in second equation

$-15x-3y=3$

$-15x-3(5x-1)=3$

$-15x-15x+3=3$

Combine like terms

$-30x+3=3$

Subtract 3 on both sides

$-30x=0$

Divide both sides by -30

$x=0$

Now plug in 0 for x in first equation

$y=5x-1$

$y=5(0)-1=-1$

So one solution (0,-1)

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Please help asap!! :)

DochEvi [55]

Answer:

$C\approx 5.14$

Step-by-step explanation:

The circumference is the distance around a complete circle: in essence, the perimeter of a circle. The formula to find the circumference of a circle is the following:

$C=(d)(\pi)$

Where (d) represents the diameter, the largest cord that can be drawn in a circle, it goes from one end to another, passing through the center of the circle. The parameter ( $\pi$ ) represents the number (3.1415...). However, one is given a semicircle, thus one must divide the result in two, and then add the value of the diameter to find the perimeter of the given object. Therefore the equation for the circumference of this circle is as follows:

$C=\frac{(d)(\pi)}{2}+(d)$

Substitute in the given value,

$C=\frac{(2)(3.1415)}{2}+(2)$

Simplify,

$C=3.1415...+2$

$C=5.1415$

$C\approx 5.14$

3 0

3 years ago

Solve for x. x-17=-57<br> i need help

seraphim [82]

X - 17 = -57
-17. -17
x = -74

hope this helps xo

7 0

3 years ago

The diagram shows an isosceles right

Pachacha [2.7K]

Answer:1. 1.0 1.0 1.4

Step-by-step explanation:

5 0

3 years ago

Can it be concluded that if there is a 50% chance of contracting a communicable disease through contact with an infected person,

crimeas [40]

Answer:

No it cannot be concluded.

Step-by-step explanation:

The probability of getting the disease in the first attempt is 50%

The probability of getting the disease in the second attempt is 50%

Thus the probability of getting the disease in either of the turns is 50%+50%=100% (which may seem to be true)

BUT

The probability of not getting the disease in the first attempt is 50%

The probability of not getting the disease in the second attempt is 50%

Thus the probability of not getting the disease in either of the turns is 50%+50%=100% (which is also true for this case)

Thus the probability of getting the disease in either of the 2 contacts is still 50%

4 0

3 years ago

A regular six sided die and an eight equal segment spinner, numbered 1 to 8, are rolled/spun simultaneously. What are the odds i

kirill [66]

Answer:

1/3

Step-by-step explanation:

In statistics, the probability of both an event A and an event B happening is equal to the probability of A happening multiplied by the probability of event B happening.

Let's say spinning a prime number is event A and rolling a number ≤ 4 is event B.

There are 8 possibilities on an eight equal segment spinner, and there are 4 prime numbers between 1 and 8 (including 8), which are 2, 3, 5, and 7. This means that the probability of spinning a prime number is 4/8, or 1/2

There are 6 possibilities on a die, and there are 4 possibilities of rolling a 4 or less (1, 2, 3, 4). Therefore, the probability of rolling 4 or less on a die is 4/6, or 2/3

The probability of both of these happening can be calculated by multiplying these together, so 1/2 * 2/3 = 2/6 = 1/3

8 0

2 years ago