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Alona [7]
2 years ago
15

Please help me on this!!! I’d really appreciate it!!!

Mathematics
1 answer:
finlep [7]2 years ago
4 0

Answer:

B

Step-by-step explanation:

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John, Johan, and Jonathan collect postage stamps. Johan and Jonathan have the same number of stamps. Two times Johan’s collectio
MrRissso [65]

The number of postage stamps in John’s collection is 27.

We have given that,

John, Johan, and Jonathan collect postage stamps. Johan and Jonathan have the same number of stamps.

<h3>What is an elimination method?</h3>

The elimination method is the process of eliminating one of the variables in the system of linear equations using the addition or subtraction methods in conjunction with the multiplication or division of coefficients of the variables.

Johan and Jonathan have the same number of stamps.

Let x be the Johan and Jonathan postal stamps.

Let y be the John postal stamps.

Two times Johan’s collection is eleven less than five times John’s collection.

2x = 5y - 11............(1)

Three times Jonathan’s collection is three less than seven times John’s collection.

3x = 7y - 3............(2)

Multiply equation 1 with 3

3(2x = 5y - 11)

⇒ 6x = 15y - 33.........(3)

Multiply equation 2 with 2

2(3x = 7y - 3)

⇒ 6x = 14y - 6.............(4)

Subtract equation 4 from equation 3

⇒ 6x - 6x = 15y - 33 - (14y - 6)

⇒ 0 = y - 27

⇒ y = 27

Hence, the number of postage stamps in John’s collection is 27.

Find more information about the elimination method here

brainly.com/question/13877817

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6 0
1 year ago
If m angle ACB=30 and m angle A=80 , find m angle B
larisa86 [58]
Angle b=180-angleaacb-angle a
angle b=70
4 0
2 years ago
Read 2 more answers
I your looking for the total you?
pickupchik [31]
It seems like the total is 45° and one of the variables were 7. 
6 0
3 years ago
Read 2 more answers
Please help lots of points
ser-zykov [4K]
1. (5/8)x=2.50
x=(8*2.50)/5
x=$4 <-- Answer
2. 0.5x+(1/3)x=10
(5/6)x=10
x=$12 <-- Answer
3. (1/3)x+0.25x=1050
(7/12)x=1050
x=$1800 <-- Answer
4. 0.5x+0.25x=18.5
0.75x=18.5
x=24 2/3 gal <-- Answer
5 0
3 years ago
Read 2 more answers
Need help with this so pls help!!!
Marat540 [252]
You need to simplify the expression and then you will know what the y coordinates are. I’m not good at this But you just need to solve the equation to be able to get the same coordinates by themselves. It’s sorta like geometry and algebra mixed. But first simplify the equations and then that will really help you.




Have a great day!
8 0
2 years ago
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