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spayn [35]
3 years ago
9

Find the answers to these 2 questions please...

Mathematics
2 answers:
aleksley [76]3 years ago
8 0
I think x =-19 hope this helps 
zubka84 [21]3 years ago
6 0
First one
remember that all triangles internal angles (the 3 at the vertices) add to 180
we want BCD
we know BAD already
and ABC is a right angle
the measure of BDA is just there to throw us off

so

all adds to 180
BAD+ABC+BCD=180
59+90+BCD=180
149+BCD=180
minus 149 both sides
BCD=31
BCD=31 degrees




2nd problem
all angles add to 180 degrees
so
CAB+ABC+BCA=180
6x+147+2x+78+126+x=180
6x+2x+x+147+78+126=180
9x+351=180
minus 251 both sides
9x=-171
divide both sides by 9
x=-19
x=-19 degrees
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3 years ago
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Shalnov [3]

Answer:

10-10

Step-by-step explanation:

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Mamont248 [21]

Answer:

2.5 or 10/4

Step-by-step explanation:

2÷4/5  

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Qué le preguntas a mi amigo?

Step-by-step explanation:

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Write numbers on the blanks to create a different expression that is equal to (3+4)+5
gizmo_the_mogwai [7]

Answer:

(3+4)+5=12

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12

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