Answer:
11v^2 - 8v + 1
Step-by-step explanation:
(4v^2 - 5v - 1) + (7v^2 - 3v + 2)
open brackets
4v^2 - 5v - 1 + 7v^2 - 3v + 2
place like terms together (remember signs remain same )
4v^2 + 7v^2 - 5v - 3v + 2 - 1
add or subtract like terms
11v^2 - 8v + 1
Answer:
- <u><em>Use the perpendicular bisectors to find the center of the circle</em></u>.
Explanation:
A <em>circle circumscribed about a triangle</em> passes through the three vertices of the triangle.
The distance from each vertex to the center of the <em>circle</em> is the radius of the circle: each vertex of the triangle is at the same distance from the center of the circle.
All the points on the <em>perpendicular bisector</em> of a side of the triangle are at the same distance from the two vertices that define that side.
Thus, where the three perpedicular bisectors intersect each other is a point (the only one) at the same distance from the three vertices of the triangle, i.e. the center of the circle.
Hence, once the center of the circle is found, you can use a compass to draw the circle that passes through the three vertices of the triangle to construct the circle circumscribed about the triangle.
Answer of the question: 5 feet 6 inches.
Step By Step explanations: —
- In the present age of a child is now = 2 yrs
- Height in the 2 yrs of a child is = 34 inches
- So, At adult her's height will be doubled = 34 × 2 = 68 inches.
- We know that, 1 foot is = 12 inches.
- So, In 68 inches the height in foot ( or in feets.) will be = 68 ÷ 12 = 5.66 feet
- That's roughly according to the 5 feet and 6 inches in the height.
Answer: After 18.05 minutes, the temperature of steel becomes 100 degrees.
Step-by-step explanation:
Since we have given that
Initial temperature = 2500
At t = 0,
we get that
After 2 minutes, the temperature of the steel is 1500 degrees.
so, it becomes,
So, We need to find the number of minutes when the temperature of steel would be 100 degrees.
So, it becomes,
Hence, after 18.05 minutes, the temperature of steel becomes 100 degrees.
Answer:
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Step-by-step explanation: