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Dovator [93]
4 years ago
15

What is 2y+5=19 equations

Mathematics
2 answers:
Kipish [7]4 years ago
7 0
I think the answer is 7 because when you multiply 7 times 2 = 14 you add it by 5 = 19
Varvara68 [4.7K]4 years ago
7 0
The answer is 7
subtract 5 from both sides then divide by 2 from both sides
You might be interested in
Which choice is equivalent to the fraction below? 1/4
RoseWind [281]
The second one because 1/4 times 3/3 equals 3/12
4 0
3 years ago
Solve the simultaneous equations
Contact [7]

Answer:

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

Step-by-step explanation:

Given equations are:

3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2

There are three methods to solve simultaneous equations

  1. Elimination
  2. Substitution
  3. Co-efficient method

We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

3x+4y - (3x-y) = 30-15\\3x+4y-3x+y = 15\\5y = 15\\\frac{5y}{5} = \frac{15}{5}\\y = 3

Putting y = 3 in equation 2

3x-3 = 15\\3x = 15+3\\3x = 18\\\frac{3x}{3} = \frac{18}{3}\\x =  6

Hence,

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

7 0
3 years ago
Sarah rolls a die twice. What is the probability that she rolls a 3 and then an even number?
vekshin1

Answer:

A) 1/12

Step-by-step explanation:

The sample space of rolling a die is { 1,2,3,4,5,6}

P (getting 3)= The number of "3"'s  in the sample space over the number of items in the sample space

P (getting a 3} = 1/6

P (getting  even)= The number of evens  in the sample space over the number of items in the sample space

P (getting an even} = 3/6= 1/2

Since these are independent events, we multiply the probabilities

P(3, even) = 1/6 * 1/2 = 1/12

6 0
3 years ago
Read 2 more answers
Plz help..............
IrinaVladis [17]
The correct answer is -15 because the absolute value is 15 but there is a negative outside the absolute value lines making it negative :)
7 0
4 years ago
Read 2 more answers
Which of these is the area of a sector of a circle with r = 18”, given that its arc length is 6π?
Igoryamba
22/7*18^2*6π/2π*18 = 169.65
4 0
3 years ago
Read 2 more answers
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