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Dafna11 [192]
4 years ago
8

Can someone please explain? I don't understand.

Mathematics
1 answer:
rewona [7]4 years ago
3 0
Don't worry, I had a bunch of trouble with this, too. 

<span>y = x + 4
y = −2x − 2 

Basically, you substitute y for x+4. 

Real quick, you know how if you have a problem like, [ y = 3x + 5 ], you're told that x = 2, then solve for y? Substatute basically means replace. So when you're replacing x with 2, your substituting x for 2. The problem you've shown is just a little more complicated.

So you start with this problem:
</span>y = x + 4
y = −2x − 2 

Then you replace one y with what the other one is equaled to. 

So you end up with something like this:
x + 4 = −2x − 2 

Then just solve :)

3x = -6

x = -2

I hope this helps! :D Feel free to ask any questions.
And please, only if you think I deserve it, it would help a bunch if you marked this answer as branliest!
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There are no solutions to the system of inequalities shown belo
Nuetrik [128]

Answer:

False

Step-by-step explanation:

Here's a simple little trick to tell wether a system of inequalities has any solutions or not, just by looking at it:

  • If the slopes are the same but the y-intercepts are different, the system has no solutions.

  • If the slopes are different, the system has only one solution.

  • If the slopes are the same and the y-intercepts are the same, then the system has infinitely many solutions.

By following this logic, since the system given has different slopes, it only has one solution. Therefore your answer is false.

Hope this helps you.

5 0
2 years ago
Convert 3/18 to a decimal
frutty [35]
3/18 = 0.166667

hope this helps . 
3 0
3 years ago
Read 2 more answers
The amount of money Jose spends on movie tickets varies directly with the number of tickets he purchases.
zzz [600]

7 movie tickets :)

First, we must find the unit price:

20.25/3=6.75

Now we divide:

47.25/6.75=7

I hope you are having a great day, buddy :)

Please mark me as brainliest:)

7 0
3 years ago
What's 1.3 repeating as a fraction
Bogdan [553]
 <span>1.333333333333333.... = 4/3. 

To find this: 

x = 1.3333333333333... 

Multiply by 10: 

10x = 13.3333333333... 

Subtract x = 1.3333333333333333....: 

9x = 12. 

Divide by 9: 

x = 12/9 = 4/3.</span>
7 0
3 years ago
The leg of a right triangle are 3 units and 10 units. What is the length of the hypotenuse? Round your answer to the nearest hun
Andreas93 [3]
Hey there! This is gonna require the Pythagorean Theorem which is<span> a^2 + b^2 = c^2
</span>
a and b in this case are the legs while c is the hypotenuse! So, we can just plug in the numbers we know!

3^2 + 10^2 = c^2

9 + 100 = c^2

109 = c^2

And then take the square root of 109 to get the hypotenuse.

<span>10.4403065089 = c
</span>
Since we need to round to the nearest hundredth, though, it would be 10.44



I hope that helps! Feel free to let me know if you have any questions!

- mathwizzard3
6 0
3 years ago
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