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lorasvet [3.4K]
3 years ago
15

Help me pleaseeeee thanks

Mathematics
2 answers:
tatyana61 [14]3 years ago
8 0
The answer is b
i hope this helps :)
LuckyWell [14K]3 years ago
7 0

Answer:

B. 14.075

Step-by-step explanation:

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How many vertice has a hexagonal <br><br>pyramid​
adelina 88 [10]

Answer: 7

Step-by-step explanation:

6 0
1 year ago
Which expression is the same as 5 + 3?
dimaraw [331]

Answer:

8

Step-by-step explanation:

5 + 3 = 8

<em>Hope that helps! </em>

<em>-Sabrina</em>

5 0
2 years ago
Please help i will give out brainliest
Aleksandr-060686 [28]

Answer:

a.  L.B. = 20.5

b.  U.B. = 21.5

Step-by-step explanation:

Length is measured 21 cm correct to 2 significant figures

a.  Lower bound of 21

  =  20.5 < 21

  = 20.5

b. Upper bound of 21

   = 21 < 21.5

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4 0
3 years ago
suzie spent 3 1/2 hours at the beach. she spent 45 minutes playing in the sand and the rest of the time playing in the water. ho
Anika [276]

Answer:

2 hours and 45 min

Explanation:

3 hours+30 minutes

subtract 30

3 hours

subtract 15

2 hours and 45 min

6 0
2 years ago
A 9,000-lb load is suspended from the roof in a shopping mall with a 16-ft-long solid aluminum rod. The modulus of elasticity of
Westkost [7]

Answer:

Step-by-step explanation:

Given:

elongation, x = 0.50 in

Force, f = 9000 lb

Young modulus, E = 10,000,000 psi

Maximum Stress, Sm = 30000 psi

Length, L = 16 ft

Converting ft to in,

12 in = 1 ft

=16 × 12 = 192 in

Young modulus, E = stress/strain

Stress = force/area, A

Strain = elongation, x/Length, L

E = f × L/A × E

1 × 10^7 = stress/(0.5/16)

= 26041.7 psi

Minimum stress = 26041.7 psi

Maximum stress = 30,000 psi

Stress = force/area

Area = 9000/26041.7

= 0.3456 in^2

Stress = force/area

Area = 9000/30000

= 0.3 in^2

Using minimum area of 0.3 in^2,

A = (pi/4)(d^2)

0.3 in^2 = (pi/4)(d^2)

d = 0.618 inches

diameter, d = 0.618 inches

7 0
3 years ago
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