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strojnjashka [21]
3 years ago
13

PLEASE HELP ME SEE IF MY ANSWERS ARE CORRECT!!!!!!!

Mathematics
1 answer:
Lena [83]3 years ago
8 0
So first one
'how many solutions does 2x-y=-5 and 2x+y=5 have?'
add and get
2x-y-5
plus
2x+y=5

equals
2x+2x+y-y=5-5
4x=0
x=0 always
solve for y
4(0)+y=5
y=5
the solution is (0,5)
only <u>ONE </u>solution






one way is to subsitute
just remember that it is in (x,y) form so
the pont (1,2) means that 1 solution is x=1 and y=2 so subsitute and find that
the first one is the answer you are correct





just look at the graph
the solution is the intersection
it seems to be at a point that is 3 units to the right and -6 units up (6 units down)
so the solution is (3,-6)
yo are corect








subsitution
y=y
therefor
the answe ris (-4,-14) if you did the math correctly











#8 is correct

# 9 is correct




# 10 the answe ris bananas=0.40 pears=0.60


the  last one you got it wrong, remember to check your answer to the graph for commonsense
then answer is (-2,5) and (1,2)
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Answer:

He put the wrong answer in Step 2, he put the put the decimal in the wrong place.

Step-by-step explanation:

5 0
3 years ago
What steps can you use to solve the equation 9 equals Y +4
kirill115 [55]

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See Below

Step-by-step explanation

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7 0
3 years ago
What is the answer for (+ 12) + (-11) + (-4)
Daniel [21]
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7 0
3 years ago
For what x value will the value of<br> y = 2* be greater than 100?
VLD [36.1K]

Answer:

x\:>\:6.64386

Step-by-step explanation:

We want to find the value of x for which 2^x\:>\:100

We take logarithm to base 2 of both sides.

\implies \log_22^x\:>\:\log_2100

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5 0
3 years ago
Which of these strategies can be used when there are nine people available for a game of basketball?
lawyer [7]

Answer:  Play five on four instead of playing five on five.


Step-by-step explanation: Since it is a basketball game, and there are nine players available, so, we should play it more consciously with better strategies.

If we only allow points for free throws,  then it may happen that we will not be able to make the ball to the basket. So, this strategy will not work.

If we play five on four instead of five on five, I think there will be better chances to win because a great combination of players can play a good game. So, this strategy will work for us.

If we put all experienced players together, then the other unexperienced group of players will find it difficult to play the game, and so, this strategy is not good.

Also, if we play the game more slowly, then there will be chances to loose the game.

Hence, we can use the second strategy to play a good basketball game.i.e., we should play five on four instead of five on five.


8 0
3 years ago
Read 2 more answers
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