Distributive is
a(b+c)=ab+ac
revers
ab+ac=a(b+c)
a is a common factor
find common factor of 4d and 8
4d=2 times 2 times d
8=2 times 2 time s2
commn factor is 2 times 2=4
4d+8
(4)(d)+(4)(2)
(4)(d+2)
4(d+2)
Answer:
30
Step-by-step explanation:
We know that BD = 20 + 5 = 25. Let's call the point where BD and CE intersect point A. Therefore, ΔBAC ≅ ΔBAE by HL (BC = BE = 25 because they are radii, BA and AB are congruent because of the reflexive property). We can use Pythagorean Theorem to find CA. We can write CA² + 20² = 25² so CA = 15 and since CA = AE = 15 and CE = CA + CE, CE = 15 + 15 = 30.
Answer:
you have to do it look up how to chart coordinates
Step-by-step explanation:
Answer:
The parallelogram is not rectangle because the sides of the parallelogram do not meet at right angles.
Step-by-step explanation:
Given the parallelogram with sides 20 and 21 units with diagonal length 28 units.
we have to tell it is a rectangle or not.
The given parallelogram is rectangle if the angle at vertices are of 90° i.e the two triangle formed must be right angles i.e it must satisfy Pythagoras theorem
=+
784=400+441=881
Not verified
∴ The sides of the parallelogram do not meet at right angles.
Hence, the parallelogram is not rectangle because the sides of the parallelogram do not meet at right angles.
Hope it helps
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Answer:
83 and 97
Step-by-step explanation:
Supplementary angles are two angles with a sum of 180 ∘
small angle = x
large angle = x+14
x + (x+14) = 180
2x +14 = 180
2x= 166
x = 83
large = 83 +14 = 97
83+97 = 180