Answer:
x=20. y=15
Step-by-step explanation:
in similar triangles the sides are all in proportion. this means:
so:
x=5×4
x=20
and...
y=3×5
y=15
Answer:
b=12
Step-by-step explanation:
Answer:
- volume: 252 cm³
- mass: 2167.2 (units not specified)
Step-by-step explanation:
The volume of a cuboid is given by the product of its dimensions. Here, that is ...
(12 cm)·(6 cm)·(3.5 cm) = 252 cm³
We are told the mass of each cm³ is 8.6, so 252 of them will have a mass of ...
8.6·252 cm³ = 2167.2 . . . . . no units specified
Answer:
= 72*pi
If we approximate pi
= 226.08
Step-by-step explanation:
The area of the entire circle is
A = pi * r^2
where r = 24
A = pi * 24^2
A = pi *576
45 degrees is part of a 360 degree circle
45/360 =1/8
Multiply the area by 1/8 since it is 1/8 of the circle
1/8 A = 1/8 * 576pi
= 72*pi
If we approximate pi
= 226.08
So we are starting out with 30 messages.
If 1/5 of the messages Lily receives are picture messages, then take 1/5 x 30 to find out how many that is.
1/5 x 30 = 30/5 = 6. So Lily receives 6 picture messages.
If 7/8 of the remaining messages are texts, then we need to find the number of remaining messages. If 6 are pictures and she receives 30 overall, then 30 - 6 = 24, the remaining number of messages. Since we know 7/8 of <em>this </em>number is the number of texts Lily received, let's do some more multiplication:
7/8 x 24 = (7 x 24)/8 = 168/8 = 21.
So Lily received 21 text messages, 6 picture messages, and 3 of something else!
