The width is 3m because 3*7 is 21m^2. Also they said the length is 4 more than the width (3+4=7)
Answer:
26° , 64° , 90° all three angles of right angle triangle.
Step-by-step explanation:
Given : the measure of one angle of a right triangle is 38 degrees more than the measure of the smallest angle.
To find : find the measures of all three angles.
Solution : We have given a right angle triangle
We know that in right angle one angle = 90 ° .
Let the smaller angle = x .
According to question :
Other angle = 38 + x
By the angle sum property of triangle: sum of all angle is 180° .
x + 38 +x + 90 = 180.
2x + 38 + 90 = 180.
2x + 128 = 180 .
On subtracting both sides by 128.
2x = 180 - 128.
2x = 52
On dividing both sides by 2.
x = 26.
Smaller angle = 26
second angle 26 +38 = 64
Third angle = 90.
90+ 64 + 26 = 180.
Therefore, 26° , 64° , 90° all three angles of right angle triangle.
The rule for a reflection across the x-axis is (x,y)-->(x,-y). Apply this to (-4,3) and you get (-4,-3).
The formula for the perimeter of a square is P = 4s, where s is the length of one of the four (4) congruent sides of the square.
The formula for the area of a square is A = s², and we're given that the area of a square, whose perimeter we're trying to find, is 36 sq. units; therefore, we have:
A = s²
36 sq. units = s²
√(36 sq. units) = √s²
6 units = s (Note: We used the positive square root (6) rather than the negative square root (-6) since you physically can't have a negative length!)
Therefore, ...
P = 4s
P = 4(6 units)
P = 24 units is the perimeter of a square whose area is 36 square units