Answer:
m∠CEB is 55°
Step-by-step explanation:
Since ∠ADE = 55°, and ∠ADE is half of ∠ADC because ED bisects ∠ADC. Bisect means to cut in half.
∠ADC = 110° because it is double of ∠ADE.
Since AB║CD and AD║BC, the two sets of parallel lines means this shape is a parallelogram. In parallelograms, <u>opposite angles have equal measures</u>.
∠ADC = ∠CBE = 110°
All quadrilaterals have a sum of angles 360°. Since ∠DCB = ∠BAD and we know two of these other angles are each 110°:
360° - 2(110°) = 2(∠DCB)
∠DCB = 140°/2
∠DCB = ∠BAD = 70°
∠DCB was bisected by EC, which makes each divided part half.
∠DCE = ∠BCE = (1/2)(∠DCB)
∠DCE = ∠BCE = (1/2)(70°)
∠DCE = ∠BCE = 35°
All triangles' angles sum to 180°.
In ΔBCE, ∠BCE = 35° and ∠CBE = 110°.
∠CEB = 180° - (∠BCE + ∠CBE)
∠CEB = 180° - (35° + 110°)
∠CEB = 55°
Therefore m∠CEB is 55°.
Answer:
B
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
<->
<u>Rectangle</u>
3 * 8 = 24
<u>Triangle</u>
4 * 3 = 12
12 / 2 = 6
Now add those two areas together, and you get 30
Answer:
Pongamos los datos
supongamos que la sala costo x
si la sala costo x, el comedor costo el doble, osea 2x
luego dice que la sala costo el triple de la mesa, si la sala costo x, la mesa costo x/3
ahora reemplazamos: dice que todo costo 35000
x + 2x + x/3 = 35000
3x/3 + 6x/3 + x/3 = 35000
10x/3 = 35000
10x= 105000
x = 10500
reemplazamos todos los datos
la sala costo x, entonces la sala costo 10500
el comedor costo 2x, entonces 2(10500) = 21000
la mesa costo x/3, entonces 10500/3 = 3500
Step-by-step explanation: