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Andreas93 [3]
3 years ago
14

I NEED HELP WITH 2 QUESTIONSS

Mathematics
1 answer:
ryzh [129]3 years ago
6 0
1. 75

2. Between 87 and 88
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If a convex polyhedron has 12 edges and 8 faces, then how many vertices does it have?
Vika [28.1K]
Hi 

Use Euler's formula for this for a 3D figure. F + V = E + 2, where F is the number of faces, V is the number of vertices, E is the number of edges, +2! You have enough info to fill in the formula to find that the number of vertices is 6.
Hoped I Helped 
4 0
4 years ago
Read 2 more answers
The table is shaped like a trapezoid. The sum of the lengths of both bases is 90 inches. The area is
____ [38]

Answer:

Step-by-step explanation:

Formula (Normal Area Trapezoid)

A = (b1 + b2 ) * h / 2

Formula (Trapezoid Modified for the question)

b1 + b2 is given as 90

Area = 90*h / 2

Givens

b1 + b2 = 90

Area = 1170

h = ?

Solution

Area = 90 * h / 2               Substitute  the givens into the formula

1170 = 90 * h/ 2                 Divide by 2 on the right.

1170 = 45 * h                      Divide both sides by   45

1170 / 45 = 45 * h/45

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<em>Answer: h = 45 inches.</em>

5 0
2 years ago
Relationships between x and y
goldfiish [28.3K]

Answer:

so both tables are proportional

1. in the green table

y divided by x =

1/5 for each row

2. in the blue table

y divided by x =

2/5 for each row

Step-by-step explanation:

/ means divided by

divide y by x

for both tables

in each table

if y divided by x

show the same number

for every row

then its proportional

1. in the green table

y divided by x =

1/5 for each row

2. in the blue table

y divided by x =

2/5 for each row

so both tables are proportional

7 0
3 years ago
I need to pass this one, please help (p.s) It would really help if you hovered over my account because I'm making these quick so
grin007 [14]

Answer:

5 times greater

Step-by-step explanation:

Slope of function 1 is 10

slope of function 2 is 2

10/2=5

6 0
3 years ago
What is the answer 3.5r=3(4+.5r)?
Juliette [100K]
3.5r=3(4+0.5r)\\\\3.5r=3\times4+3\times0.5r\\\\3.5r=12+1.5r\ \ \ \ \ |substract\ 1.5r\ from\ both\ sides\\\\2r=12\ \ \ \ \ \ |divide\ both\ sides\ by\ 2\\\\r=6
3 0
4 years ago
Read 2 more answers
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