Answer:
3x^7+2x^6-5x^5
Step-by-step explanation:
(3x^7-4x^5+3)+(2x^6-x^5-3)
3x^7-4x^5+3+2x^6-x^5-3
3x^7+2x^6-4x^5-x^5+3-3
3x^7+2x^6-5x^5
Answer:
Base of each triangular face = 4 inches
Height of each triangular face = 6 inches
Step-by-step explanation:
The length of each side of the square base is the base of each isosceles triangle forming the pyramid.
We know from our problem that the ratio of the height of each triangle to its base is 3:2, so . We also know that the base is a square with sides 4 inches long, since the bade of the square is the base of the isosceles triangle, .
Replacing the value of the base in our proportion:
Multiply both sides by 4
We can conclude that he base of each isosceles triangle is 4 inches and its height is 6 inches.
Answer:
none of the above.. its correct answer is √39
The length of the ladder is 34.33 feet if the electrician leans an extension ladder against the outside wall of a house so that it reaches an electric box 33 feet up. The ladder makes an angle of 74° with the ground.
<h3>What is a right-angle triangle?</h3>
It is defined as a triangle in which one angle is 90 degrees and the other two angles are acute angles. In a right-angled triangle, the name of the sides are hypotenuse, perpendicular, and base.
We have:
An electrician leans an extension ladder against the outside wall of a
house so that it reaches an electric box 33 feet up. The ladder makes
an angle of 74° with the ground.
The ladder, wall, and ground makes a right angle triangle.
From the sin ratio;
Here is X is the length of the ladder.
We know sin74 = 0.961
After putting, we will get:
X = 34.329 ≈ 34.33 feet
Thus, the length of the ladder is 34.33 feet if the electrician leans an extension ladder against the outside wall of a house so that it reaches an electric box 33 feet up. The ladder makes an angle of 74° with the ground.
Learn more about the right angle triangle here:
brainly.com/question/3770177
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