Answer:
4.005 ( sorry i don't know what you mean round to the nearest penny)
Step-by-step explanation:
4.5 x 0.89 = 4.005
B = 1/4c + 14
d = 5/4c - 2
b = d
1/4c + 14 = 5/4c - 2
1/4c - 5/4c = -2 - 14
-c = - 16
c = 16 <=== chris got 16 correct
b = 1/4c + 14
b = 1/4(16) + 14
b = 4 + 14
b = 18 <=== Brian got 18 correct
d = 5/4c - 2
d = 5/4(16) - 2
d = 20 - 2
d = 18 <=== damien got 18 right also
Answer:
31.18 units²
Step-by-step explanation:
The diagonals bisect the angles.
⇒ Angle at half the rhombus = 120 ÷ 2 = 60°
Both sides of the triangle are 6 units:
⇒ Half the rhombus is also an isosceles triangle.
⇒ the other angle is also 60°.
Both angles are 60°,
⇒ the third angle is 180 - 60 - 60 = 60°
⇒ it is an equilateral triangle.
Area of an equilateral triangle = √3/4 (6)² = 15.59 units²
The rhombus is made up of two of the triangles.
⇒ Area of the rhombus = 15.59 x 2 = 31.18 units²
Answer:
x = 16
m<R = 34°
Step-by-step explanation:
▪︎Its an isoceles triangle, so the two opposite angles are equal. m<S = <T.
▪︎So, you write them equal to each other and solve the linear equation to find <em>x</em><em>.</em><em> </em>
▪︎Substitute the x value into any of the angles and multiply by 2, (as they are equal) to find the sum, which is 146°.
▪︎Sum of all angles in a triangle is 180°,so
146° + m< R =180°
▪︎than minus 146° from 180°.
▪︎And you will have your answer.