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ad-work [718]
3 years ago
7

Solve the system using elimination x + 2y = 1 4x + y = 11

Mathematics
1 answer:
VashaNatasha [74]3 years ago
3 0
X + 2y = 1 ______×1
4x + y = 11 _____ ×2

x + 2y = 1
8x + 2y = 22

8x + 2y = 22
(-)
x + 2y = 1
_____________
7x = 21

x = 3

3 + 2y = 1
2y = 2
y = 1

i am a mathematics teacher. if anything to ask please pm me
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dmitriy555 [2]
So 4 eggs is 2/3of 6 eggs, so to get the amount of milk we multiply the 3 cups by 2/3 (or just divide by 3 and multiply by 2) and get 2 cups of milk. 
Hope this helps!
4 0
3 years ago
3. If a = -2 and b = 6, find the value of each of the
pochemuha
So here if a is -2 and b is 6 .
1. 6a -b =
Here you have to apply this method called substitution, the meaning is that you have exchange the variables with numbers given you above . So is going to be 6(-2) - 6 which is equal to -12 - 6, this the answer but if the question said find and solve the answers it will be -6
5 0
1 year ago
What is value of x<br> Plz help
KatRina [158]

Answer:

10√2

Step-by-step explanation:

This is a 45-45-90 triangle which means that the two non-hyptonouse lenghts are the same which means that the bottom lenght of the triangle is also 10 units

We can then use a^2+b^2=c^2 to solve for the last side

so we have

10^2+10^2=x^2

200=x^2

sqrt200=x

and I see that they want an exact answer so you simplify sqrt200 to

10√2

4 0
2 years ago
Two positive, consecutive, odd integers have a product of 143. set up an equation to then solve for the integers.
mixer [17]

Answer:

Step-by-step explanation:

Let (2n-1) and (2n+1) be the consecutive, odd numbers.

(2n-1)(2n+1) = 143

4n² - 1 = 143

4n² = 144

n² = 36

n = 6

2n-1 = 11

2n+1 = 13

The numbers are 11 and 13.

6 0
2 years ago
PLEASE HELP OMG THIS IS SO HARD
Ganezh [65]
It should just be y = 40x :)
4 0
2 years ago
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