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CaHeK987 [17]
3 years ago
14

Mario's company makes unusually shaped imitation gemstones. One gemstone had 10 faces and 12 vertices. How many edges did the ge

mstone have ?
Mathematics
1 answer:
igor_vitrenko [27]3 years ago
5 0
I think 20 but not sure (:
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If x = 8 units, y = 3 units, and h = 10 units, find the area of the trapezoid shown above using decomposition.
kondaur [170]
If by decomposition you mean breaking it ino parts then

break it itno 2 triangles and 1 rectangle

left to right

triangle with base y and height h
h=10
y=3
area of traignel=1/2bh
aera=1/2(10)(3)
area=5(3)
area=15

rectangel of legnth x and height h
area=legnth timwe width
x=8
h=10
area=8 times 10
aera=80


last triangle
should be same as other sinces same base (y) and same height (h)
15

add
15+80+15=120
8 0
3 years ago
Read 2 more answers
Sofia's grandfather has 18 sacks of candies. There are 348 pieces in each sack of candies. How many candies does Sofia's grandfa
sleet_krkn [62]

Answer:

18 x 348 = 6,264.

Sofia's grandfather has 6,264 candies in total.

5 0
3 years ago
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Find the common difference for the sequence shown 1/4,5/16,3/8
Vladimir79 [104]
<span>common difference for the sequence = 1/16

cause
1/4 = 4/16
and
3/8 = 6/16

so
4/16 + 1/16 = 5/16
5/16 + 1/16 = 6/16

</span>
4 0
4 years ago
How do I solve this question I’ve been stuck on this since last night
meriva

Observation one

From the markings on the diagram <1 = 60o The left triangle is at least isosceles. Therefore equal sides produce equal angles opposite them.

Now we have accounted for 2 angles that are equal (each is 60 degrees) and add up to 120 degrees. The third angle (angle 2) is found from this equation.

<1 + 60 + <2 = 180 degrees.  All triangles have 180 degrees.

60 + 60 + <2 = 180

Observation 2

<2 = 60 degrees.

120 + <2 = 180

m<2 = 180 - 120

m<2 = 60 degrees.

Observation 3

m<3 = 120

<2 and <3 are supplementary.

Any 2 angles on the same straight line are supplementary

60 + <3 = 180

<3 = 180 - 60

<3 = 120

Observation 4

m<4 = 40 degrees.

All triangles have 180 degrees. No exceptions.

m<4 + 20 +m<3 = 180

m<4 + 20 + 120 = 180

m<4 + 140 = 180          

m<4 = 180 - 140

m<4 = 40


8 0
3 years ago
The population P of birds in an area is modeled by the exponential model
Tems11 [23]
(B)Decreasing is the answer
3 0
3 years ago
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