When using substitution method to solve the following system of equations, what is the result of the first step ? x +2y=5 y=6x+3

× whats the point of this

The likelihood of selecting a classmate at random who does not have an A is 6/19.

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

To find the probability of a student not having an A, we need to first find the total number of students who do not have an A.

The number of students who have an A is 13, so the number of students who do not have an A is:

19 - 13 = 6

Out of these 6 students, 4 are male and 2 are female.

So, the probability of choosing a student randomly who does not have an A is:

P(not A) = number of students without an A / total number of students

P(not A) = 6 / 19

Therefore, the probability of choosing a student randomly from the class who does not have an A is 6/19.

Learn more about probability here:

https://brainly.com/question/30034780

#SPJ2

Answer:

a

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

The initial population is 350 so...

P = 350

The total population of birds in the enclosure is expected to increase every year by 5%

so r = 0.05

and time = X

we need to use the equation P(X) = P(1+r)^x

so by plugging in the values we get:

P(x) = 350(1.05)^x

so A is the correct answer

Answer:

180 i think if you are not sure with my ans then just don't use it k bey

Step-by-step explanation:

Answer:

Impossible; certain to happen

Step-by-step explanation:

Probability = 0 applies to an event which cannot happen.  Example: roll a die and get a 7.

Probability = 1 applies to an even which is certain to occur.  Example: roll a die and get a number less than 8.

Answer:

Step-by-step explanation:

So let the angles be 2x,3x,5x

∠A + ∠B + ∠C + ∠C = 360  

[Sum of all the angles of a quadrilateral ]

⇒2x+3x+5x+130=360  

⇒10x = 360 -130  

⇒x =  23

The angles are ,

∠A = 2x = 2×23 = 46

∠B = 3x = 3×23 = 69  

∠C = 5x = 5×23=115

Let the angles be 2x,3x and 5x

We know that 2x+3x+5x+130=360

10x+130=360

10x=230

Therefore x=23°

2x=46°

3x=69°

5x=115°

Hope it helped! Have a nice day!!

Answer:

b

Step-by-step explanation:

add all of his assets together

his assets are the numbers listed in the right side of the chart.

4,091 + 25,800 + 3,940 + 2,143 + 9,400 + 21,500 + 34,805

= 101,679

the answer is b

good luck!

Answer:

B.45

Step-by-step explanation:

60+55=115

180-115=65

65-20=45

Answer: 45°

Answer:

p = 5t

Step-by-step explanation:

We'll check by plugging in t = 3 and p has to equal 15

p = 5t     ✅

p = 5(3)

p = 15

3t = 15p ❌

3(3) = 15p

9 = 15p

p = 15/9 = 5/3

p/t = 15 ❌

p/3 = 15

p = 45

p = 1/5t ❌

p = 1/5(3)

p = 3/5

Answer:

654 grams

Step-by-step explanation:

When you set up this equation you want the number of grams you start with, 2616, and the factor by which it is decreasing, which is half, or 1/2. Because the half life is 11 days, but you want to find the amount left over after 22 days, you can make 22/11 as the exponent on the 1/2. The equation should look like this : 2616(1/2)^22/11. With these kinds of equations you always want to multiply the starting value by the factor of increase/decrease, and raise that factor to the time eclipsed divided by the set time(like the 11 day half life).

Answer:

B (-2 , -11)

Step-by-step explanation:

hello : the system is :

y = 4x - 3

y= -x - 13

put x = -2

y = 4(-2) - 3=- 11

y= -(-2) - 13 = -11

Answer:

(-1, 4)

Step-by-step explanation:

Hope this helps

Answer:

a

Step-by-step explanation:

Answer:

75.6 miles

Step-by-step explanation:

Multiply 4.2 by 18

Complete question :

Lower-than-expected demand for LCD TVs has spurred manufacturers to cut prices in recent years. The average price P of a 32-in. LCD TV t years after 2005 can be approximated by P(t) 1052(0.793), where t0 corresponds to 2005 a) What was the average price of an LCD TV in 2005? in 2009? in 2011?

Answer:

1052 ; 416.01 ; 261.61

Step-by-step explanation:

Given the price function :

P(t) = t0(0.793)^t

P(t) = 1052(0.793)^t

Price in 2005 = 1052

The average price of LCD in 2005 is t0

t - t0 = 2005 - 2005 = 0

P(0) = 1052(0.793)^0 ;

P(0) = 1052 * 1 =

Price in 2005 = 1052

Price in 2009 :

t = 2009 - 2005 = 4

P(t) = t0(0.793)^t

P(4) = 1052(0.793)^4

P(4) = 1052 * 0.39534 = 416.0145

Price of LCD in 2009 = 416.01

Price in 2011

t = 2011 - 2005 = 6

P(t) = t0(0.793)^t

P(6) = 1052(0.793)^6

P(6) = 1052 * 0.248679 = 261.6103

Price of LCD in 2009 = 261.61

Answer:

8/12,4/6

Step-by-step explanation:

Answer:

8/12, 4/6 are equal to 2/3

to find the answer, take the number of cubes of the first rectangular prism, then divide that by 4 and there's your answer.

Answer:

1- effect of cause

2- effect of cause

4- effect of cause

Answer:

Step-by-step explanation:

Angle formed by two chords is the half of the sum of the intercepted arcs:

Answer:

5 m

Step-by-step explanation:

(C is the hypotenuse)

A^2 + B^2 = C^2

4^2 + 3^2 = C^2

16 + 9 = C^2

25 = C^2 (Now square root both sides)

C = 5 m

Answer: (from the top) 11, 13, 15, 21

Step-by-step explanation:

2(3)+5 =11

2(4)+5 =13

2(5)+5 =15

2(8)+5 =21

Answer:

If we take "at random" to mean uniformly at random (which is the typical interpretation when there is no other information given) then the answer is actually FIVE out of eleven (not 4 out of eleven as the other answers give).

In English, the letter Y is considered a vowel when it makes the sound of a long E as it does in the word PROBABILITY. So the vowels are the A, the two I's, the O, and the Y -- a total of five of the eleven letters.

The only thing I have to add is that while "at random" is usually taken to mean uniformly at random, it need not mean this. For example, we could assign the probabilities in such a way that each letter is twice as likely as the letter before it. So "p" would have probability 1/2047 of being selected, "r" would have probability 2/2047, "o" would have probability 4/2047, and so on. Finally "y" would have probability 1024/2047. In this case, we'd add the probabilities of the five vowels to get a total probability of 1346/2047.

Answer:

The probability is 4/12 because there are 5 vowels. Just do the math.

Answer:

20 cm^2

Step-by-step explanation:

A= 1/2 ×height

height = 4 cm

sides S1= 7cm

S2= 3cm

A= 1/2(7+3)4

=5×4

=> 20 cm

hope it helps..

have a great day!!

Answer:

9/2

Step-by-step explanation: