Answer:
(d) 60°
Step-by-step explanation:
<u>Theorems</u>
- Interior angles of a triangle sum to 180°
- Angles on a straight line sum to 180°
Therefore, the <u>exterior angle</u> of a triangle is <u>equal to the sum</u> of the <u>two non-adjacent interior angles</u> of the triangle.
⇒ (a + 20) + (a + 10) = (a + 90)
⇒ a + 20 + a + 10 = a + 90
⇒ 2a + 30 = a + 90
⇒ 2a + 30 - a = a + 90 - a
⇒ a + 30 = 90
⇒ a + 30 - 30 = 90 - 30
⇒ a = 60
Answer:
900g
Step-by-step explanation:
This is a case of direct variation as the weight will increase with the number of toys.
hence, 4/600 = 6/x
4x = 3600 (cross multiplication)
x = 900
Hence the weight of 6 such toys is 900g.
$6000x3.25%=195(year)
140x12=1680 (year)
1680+195=1875(year)
1875x6=11250
At the end of 6 years they will have 11,250 in the bank
(You didn't include the 'price' of college.)