Find the sum 18,997.9 + 421.19
2 answers:
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To solve this equation we must first plug in 5 for x.
<span> (5 - 4x)
</span>↓
(5 - 4 · 5)
The next step would be to multiply 4 by 5 to get rid of the parenthesis within our main parenthesis.
(5 - 4 · 5)
(5 - 20)
The next step would be to subtract both of the numbers within the parenthesis.
(-15)
Now we must multiply.
- · 15 = - 
-
Now we simplify our answer to get our final answer.
-5
</span>↓
The next step would be to multiply 4 by 5 to get rid of the parenthesis within our main parenthesis.
The next step would be to subtract both of the numbers within the parenthesis.
Now we must multiply.
-
-
Now we simplify our answer to get our final answer.
-5
Given that the triangles are similar.
When triangles are similar, all three pairs of corresponding sides are in the same ratio.
Similarly in the given triangles, the ratio of the corresponding sides are equal.
Cross multiplying, we get
Dividing both sides of the equation by -4.
So, we get
x = 7.