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kolbaska11 [484]
3 years ago
7

Can someone please help me with this whole page asap !!!

Mathematics
1 answer:
Valentin [98]3 years ago
4 0
What answers do u need
You might be interested in
HELP PLEASE!!! 10 PTS!!
allsm [11]

Answer:

m∠DEC = 78°

Step-by-step explanation:

Given information: AC = AD, AB⊥BD, m∠DAC = 44° and CE bisects ∠ACD.

If two sides of a triangles are congruent then the opposite angles of congruent sides are congruent.

AC = AD                 (Given)

\angle ADC\cong \angle ACD

m\angle ADC=m\angle ACD

According to the angle sum property, the sum of interior angles of a triangle is 180°.

m\angle ADC+m\angle ACD+m\angle DAC=180

m\angle ACD+m\angle ACD+44=180

2m\angle ACD=180-44

2m\angle ACD=136

Divide both sides by 2.

m\angle ACD=68

CE bisects ∠ACD.

m\angle ACE=m\angle DCE=\dfrac{\angle ACD}{2}

m\angle ACE=m\angle DCE=\dfrac{68}{2}

m\angle ACE=m\angle DCE=34

Use angle sum property in triangle CDE,

m\angle CDE+m\angle DCE+m\angle DEC=180

68+34+m\angle DEC=180

68+34+m\angle DEC=180

102+m\angle DEC=180

Subtract 102 from both sides.

m\angle DEC=180-102

m\angle DEC=78

Therefore, the measure of angle DEC is 78°.

6 0
2 years ago
A tennis ball weighs about 57.6 grams. about how many apuntes would 12 tennis balls weigh?
Ilia_Sergeevich [38]

Answer:

The weight of 12 tennis balls  =  691. 2 grams

Step-by-step explanation:

The weight of each  tennis ball =  57.6 grams

So, the weight of 12 balls    =    12 x ( weight of 1 ball)

                                              = 12 x 57.6 grams

                                              = 691.2 grams

⇒12 balls weigh 691.2 grams

Hence, the weight of 12 tennis balls  =  691. 2 grams

7 0
3 years ago
Help me please!!!! I don’t get this
Jet001 [13]
BCD should have to equal 24 degrees because angles ACB and BCD look Complimentary and a complimentary is 2 angles that equal 90 degrees when combined since ACB and BCD look like a 90 degree angle I would say that BCD is 24 degrees
7 0
3 years ago
HELP ILL GIVE BRAINLIEST PLEASE I NEED TO PASS MY TEST
Naily [24]
<h2>You need a reflection across the y-axis!</h2>
4 0
3 years ago
Read 2 more answers
PLEASE HELP!!! FIND X IN THE DIAGRAM PROVIDED!! WILL GIVE BRIAIN!!
iren2701 [21]

:\implies \sf 3x⁰+45⁰+90⁰ = 180⁰

:\implies \sf 3x⁰+135⁰ = 180⁰

:\implies \sf 3x⁰ = 45⁰

:\implies \sf x = \dfrac{45}{3}

:\implies \sf x = 15⁰

hence, last option is right

6 0
3 years ago
Read 2 more answers
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