Here, we need to set up an equation. So since the two angles need to add up to 90, and x will represent the angle, the initial equation will look like this. x=90-x. When you plugin the 14, it will look like x=14(90-x) and that gives you x=1490-14x. Add the 14x to the left and it becomes 15x=1490. Divide by 15 and you get x=84. That is the first angle. Now, we subtract 84 from 90 and we get 6. therefore the angles are 84 and 6 degrees.
Hope this is clear enough.
Answer:
=
−
5
Step-by-step explanation:
−
8
−
3
(
2
+
1
)
=
6
7
-8x{\color{#c92786}{-3(2x+1)}}=67
−8x−3(2x+1)=67
−
8
−
6
−
3
=
6
7
-8x{\color{#c92786}{-6x-3}}=67
−8x−6x−3=67
2
Combine like terms
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8
−
6
−
3
=
6
7
{\color{#c92786}{-8x}}{\color{#c92786}{-6x}}-3=67
−8x−6x−3=67
−
1
4
−
3
=
6
7
{\color{#c92786}{-14x}}-3=67
−14x−3=67
3
Add
3
3
3
to both sides of the equation
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1
4
−
3
=
6
7
-14x-3=67
−14x−3=67
−
1
4
−
3
+
3
=
6
7
+
3−
1
4
=
7
0
-14x=70
−14x=70
5
Divide both sides of the equation by the same term
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1
4
=
7
0
-14x=70
−14x=70
−
1
4
−
1
4
=
7
0
−
1
4
\frac{-14x}{{\color{#c92786}{-14}}}=\frac{70}{{\color{#c92786}{-14}}}
−14−14x=−1470
6
Simplify
Cancel terms that are in both the numerator and denominator
Divide the numbers
=
−
5
The answer
the full question is
If A(x1, y1), B(x2, y2), C(x3, y3), and D(x4, y4) form two line segments, and AB ⊥ CD, which condition needs to be met to prove AB ⊥ <span>CD?
</span>
let be A(x1, y1)B(x2, y2) the first line, and C(x3, y3) D(x4, y4) the second
the slope of the first line is m = y2 -y1 / x2 - x1
the slope of the second line is m' = y4 -y3 / x4 - x3
so the condition needs to be met to prove AB ⊥ CD is
y2 -y1 y4 -y3
m x m' = --------- x ------------ = -1
x2 - x1 y4 -y3
Answer:
58%
Step-by-step explanation:
The first thing that you have to do if figure out how many sandwiches are left we do this by the total - bad sandwiches = good sandwiches
12-5=7
There are 7 good sandwiches left. To figure out the percentage you do = now we fill in the parts the part is 7, the total is 12 and the % is x
= now we cross multiply, 7 x 100 and 12 x X
700=12x now we divide both sides by 12 so the x is alone
x = 58.33 now we round down because it ends in.3
x=58
Use cymath.com they help a lot and explain how to do it!