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Nookie1986 [14]
2 years ago
15

When solving this system by elimination, which variable is the most convenient to eliminate,

Mathematics
1 answer:
kobusy [5.1K]2 years ago
4 0

Answer:

Y is the appropriate variable and the most easiest and convenient to eliminate

name 2x + y = 7 as equation i

and 3/2 x - y = 7/2 as equation ii

then add equation i and ii together

(3/2 + 2) x + y - y = (7 + 7/2)

(7/2) x = (21/2)

x = 3

then put in x = 3 in equation i

4 + y = 7

x = 7 - 4

x = 3

Therefore x = 3 and y = 3

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Which of the following improper fractions is equivalent to the mixed number 4 2\3 ?
Alex787 [66]
The improper fraction form of 4 2/3 would be 14/3, if that is one of the choices.
4 0
3 years ago
Read 2 more answers
How many feet long is the fence ?
grandymaker [24]

Answer:

50 feet long

Step-by-step explanation:

Use the Pythagorean theorem to find the value of the missing side. The pythagoreon theorem only works with right triangles such as this one.

a²+b²=c²

Where a and b are length of legs (sides) of a triangle. And c is the length of the hypotenuse. The hypotenuse is the side across from the right angle.

We know by looking at the image posted in the question, that one leg of the triangle is 14 feet. And another leg is 48 feet. (Length of picnic area) (length of campground)

14²+48²=c²

Simplify

196+2304=2500

Find square root of 2500

√(2500)=50

So 14²+48²=50²

The missing side is 50 feet long. The fence is 50 feet long.

Attached is another example.

7 0
3 years ago
the ages of three siblings total 32 years the middle child is 4 years older than the youngest and the eldest is twice as old as
krek1111 [17]

Answer: 5 9 18. The youngest child would be 5, the middle child would be 9, and the eldest would be 18 years old.


Step-by-step explanation: 5 + 4 = 9, 9(2) = 18 Hope this helps :D


4 0
3 years ago
Paula has 6 video games. Myles has 1 more video game than paula. Which could you use to find how many video games in all.
IrinaVladis [17]

Paula = 6 video games

Myles = 1 video game + Paula(6 video games)

P + M = Total video games

M = 1 + P

P = 6

P + M = 6  + 1 = 7


4 0
3 years ago
Which statement about the equation is true?
zvonat [6]
C because you got to find the like term term
6 0
3 years ago
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