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Lina20 [59]
3 years ago
7

-2x-9y=-25 -4x-9y=-23

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
8 0
So to start this off you would add 9y to both sides of the equation and then you regroup it which gives you <span>−2x=−25+9y and then you regroup the terms and get -2x=9y-25 and then you dived both sides by -2 and get x=9y-25/-2 then you simplify and so on 

but at the end you should get x=-1 and y =3
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(3x + V6y)(4x - Voy)
Akimi4 [234]

Answer:

12x^2+24Vxy-3Voxy-6V^2oy^2

Step-by-step explanation:

(3x+V6y)(4x-Voy)

12x^2+24Vxy-3Voxy-6V^2oy^2

5 0
3 years ago
Read 2 more answers
Ten hunters are waiting for ducks to fly by. When a flock of ducks flies overhead, the hunters fire at the same time, but each c
Lerok [7]

Answer:

The expected number of ducks that escape unhurt is:

5

Step-by-step explanation:

First the process is binomial process. Having said this, we have 10 hunters, and 10 ducks flying overhead while the hunter take their shot at the same time.

By expected value, we mean average or mean. And the mean of a binomial distribution is:

Mean => E(x) = np.

We must also know that there is only two probability possibilities:

1. The hunter hits the duck (p)

2. The hunter misses the duck (1-p) = q.

Hence;

p = 1/2, and (1-p) = 1/2.

Therefore;

E(x) = np; where n is the total number of hunter.

E(x) = 10*(1/2) = 5

The expected number of ducks that escape unhurt is 5

3 0
4 years ago
William is planning to cover one side of the roof of his barn with solar panels.
marishachu [46]

Answer:

5 i think

Step-by-step explanation:

to start you need to find the total area the side of the roof he plans to cover which is 360 feet.

16x2 + 20x2 = 72

so lets just say thats the total area of one solar panel then you could just divide 360 feet by 72 feet to get...

5. so i guess william needs 5 solar panels

i could be spouting nonsense rn.. so sorry if im wrong

8 0
3 years ago
What is the distance between Point K and Point L?
lutik1710 [3]

Answer:

( 7, 2 )

Step-by-step explanation:

I hope this helps you!

3 0
3 years ago
OMG plz help me. IDK how to do thisI need help asap
larisa [96]
1)1.10w+2.35(172-s)=294.20
When you solve
1.10x+2.35(172-x)=294.20 solve for x
X water=88
S=172-88=84
2)2t+4(40-f)=100
When you solve
2x+4(40-x)=100 solve for x
X=30 for t
40-30=10 for f
Hope it helps
5 0
4 years ago
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