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grin007 [14]
3 years ago
12

Is (3,-1) a solution of this system: y=2-x 3-2y=2x

Mathematics
1 answer:
I am Lyosha [343]3 years ago
8 0
Plug in (3,-1) into equations to see:
-1=2-3
-1=-1 CHECK

3-2(-1)=2(3)
3+2=6
5=6 NO

This is not a solution.
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Four more than three times a number is greater than twenty-two​
Delvig [45]

Answer:

3x + 4 > 22 // x = 7 or up

Step-by-step explanation:

I assume this is a 'Take words and put into an equation' so here

'Three times a number'

Lets say a number is represented by x, it'd be 3x

'Four more than'

That's addition, adding onto the previous number it would be 3x + 4

Finally the 'Greater than 22' is > this sign

3x + 4 > 22

If you need to solve for x, then whatever is multiplied by 3 then added by 4 must be more than 22. It can really be anything 7 and up. 3x5 is 15, add 4 and it's 19, which is less than 22. 3x6 is 18, add 4 and its 22, that's equal to it, not greater than. 3x7 is 21, add 4 and it's 25. Anything further along with that will be greater than 22.

6 0
3 years ago
Which region represents the solution to the given system of inequalities?
muminat
Consider, pls, this option:
a) for y≥2x-3 it is A and C regions;
b) for y≤-x+2 it is B and C regions;
c) from both it is C region. 
5 0
4 years ago
Read 2 more answers
Skye ran r laps today at soccer practice. Nadine ran five fewer laps than Skye. If Nadine ran eight laps at practice, which of t
jeka94

Answer: r - 5 = 8

Step-by-step explanation:

From the question, we are informed that Skye ran r laps today at soccer practice while Nadine ran five fewer laps than Skye.

If Nadine ran eight laps at practice, the equation that can be used to find how many laps Skye ran will be:

r - 5 = 8

This means Skye ran 13 laps

6 0
3 years ago
Please help this is due TODAY
hammer [34]

Answer:

x=75°and y=x= 75°

Step-by-step explanation:

Reason: opposite angles are equal and how I got 75 is by drawing an extension line and finding the other angle (i.e. angle on a straight line=180) so 180-105=75.

6 0
3 years ago
What is the area??????????
alexdok [17]
The bottom trapezoid is
(1/2) * h * (b2 + b1) =
(1/2)*11 * (31+25)
(1/2) * 11 * 56
308

The top parallelogram is
b * h = 12 * 14 = 168
308 +168 = 476 ft^2
Letter B
4 0
3 years ago
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