Since angles A and C are equivalent, then angles B and D must also be equivalent. So if
angle B = angle D then...
7x + 15 = 8x
Now we just solve for x
7x + 15 = 8x
15 = 8x - 7x
15 = x
We Can check to see if it is correct by substituting 15 in for x in the equation..
7x + 15 = 8x
7 (15)+15 = 8 (15)
105 +15 = 120
120 = 120
It checks! angles B and D = 120 degrees
Answer:
-1836
Step-by-step explanation:
(-13) × (-17) = 221
(-187) × 11 = -2057
• Add 221 to -2057 (Different sign '-' , '+' subtract)
-1836 (Bigger number contains which sign is the sign of answer:::::2057 is greater than 221 ; it contains '-')
Answer:
60 u²
Step-by-step explanation:
<u>Finding</u><u> </u><u>second</u><u> </u><u>diagonal </u><u>:</u><u>-</u><u> </u>
- d' = √{ 17² - 8²}
- d' = √{ 289 - 64 }
- d' = √{ 225 }
- d' = 15 u
<u>Using</u><u> </u><u>formula</u><u> </u><u>:</u><u>-</u><u> </u>
- A = 1/2 * d * d'
- A = 1/2 * 15 * 8
- A = 15 * 4 u²
- A = 60 u²