Answer:
There is one solution
Step-by-step explanation:
2x + y = -1
8x + 3y = -2
Multiply the first equation by -4
-8x -4y = 4
Then add the equations together to eliminate x
-8x -4y = 4
8x + 3y = -2
--------------------
-y = 2
Multiply by -1
y =-2
Now find x
2x+y =-1
2x+-2 =-1
Add 2 to each side
2x-2+2=-1+2
2x=1
Divide by 2
x = 1/2
Answer:
D.17
Step-by-step explanation:
We are given that inequality
x<15
We have to find the number which is not a solution of the given inequality.
x<15
It means the values of x which is less than 15.
A.-6
-6<15
Therefore, it is the solution of given inequality.
B.-2
-2<15
Therefore, it is the solution of given inequality.
C.11
11<15
Therefore, it is the solution of given inequality.
D.17
17>15
Therefore, it is not a solution of given inequality.
Option D is true.
Answer:
<h3>
A = 0.5(2x+6)(6x+13) = 6x² + 49x + 78</h3>
Step-by-step explanation:
H = 2x+6 - the hight
3H = 3(2x+6) - triple the hight
3H-5 = 3(2x+6) - 5 - five less than triple the height
Area of triangle: A = 0.5BH
B = 3(2x+6)-5 = 6x + 18 - 5 = 6x + 13
H = 2x+6
So:
A = 0.5(2x+6)(6x+13) = (x+6)(6x+13) = 6x² + 13x + 36x + 78
A = 6x² + 49x + 78
Answer:
i) 24
ii) 4 girls, 3 boys
Step-by-step explanation:
The GCF is 24
96= 24*<u>4</u>
72= 24*<u>3</u>
<u />
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<u>I hope this helps!</u>
Answer:
f(0) = 1/2
Step-by-step explanation:
At x=0, the inequality tells you ...
1/2 ≤ 1 -f(0) ≤ 1/2
That is, ...
1 - f(0) = 1/2
f(0) = 1/2
