Greetings.
The answer is (5,4)
Explanation:
Solving by elimination can be done by adding or subtracting of first and two equation.
Find any terms that make themselves = 0.
And that is the y-term.
Our 2y and -2y. If we add each others, we'd get 0 for y-term.
Therefore, we eliminate the y-term first.
If you are wondering how I get 2x = 10 then here's the explanation.
So we simply add/subtract both equations.
We do -x + 3x = 2x
Then +2y - 2y = 0
And 3 + 7 = 10
That's how we get 2x = 10.
Basically Add/Subtract in Vertical way.
We may get the x-value but we need to know the y-value too.
Therefore, substitute x = 5 into any given equations. I suggest you to substitute the x-value in any equations with less coefficient value.
I'd rather substitute x = 5 in -x+2y = 3.
Substitute x = 5 in -x + 2y = 3
Therefore, when x = 5, y = 4. Since you want the answer in ordered pairs then It's (5,4).
Answer:
The answer is decrease since the number went down.
The percent change should be -12 percent
The two triangles he drew and also the calculations he did are missing, so i have attached them.
Answer:
His calculations are not correct
Step-by-step explanation:
From the attached image showing the triangle, we can see that for the smaller triangle with w, 5.5 and 45° angle, it is clear that;
Opposite side is 5.5
Adjacent side is w
And angle is 45°.
Hypotenuse is unknown
Thus, from trigonometric ratios;
Opposite/adjacent = tan (angle)
Thus;
5.5/w = tan 45°
In Skylar's calculation, he expressed it as; 5.5/w = sin 45°
Therefore, his calculation is wrong.
Secondly, for the bigger triangle, it is clear that;
Opposite side is 5.5
Adjacent side is w + x
And angle is 35°.
Hypotenuse is unknown
Thus;
5.5/(w + x) = tan 35°
Whereas,skylar expressed his own as;
5.5/(w + x) = sin 35°
Again his calculation is wrong.
Answer:
11/2
Step-by-step explanation:
you use the keep, change, flip method so this becomes 11/3 times 3/2 then multiply regularly
