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Verdich [7]
3 years ago
12

Marco sorted these solid figures into two groups. What is true about the groups?

Mathematics
1 answer:
Lisa [10]3 years ago
4 0

Answer:

All figures in Group 1 appear to have at

least one square face

Step-by-step explanation:

Let us examine each statement and see whether they are true or not.

The first statement is not true. Only one of the figures (square pyramid) has at least one triangular face. It has 4 triangular faces, actually.

The second statement is not true. Only one of the figures is a rectangular prism. The remaining two are triangular pyramid and triangular prism respectively.

The third statement is not true also. Only 1 figure is a triangular prism.

The fourth statement is correct. In group 1, all the figures has at least one square face.

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When a particular mass-spring system is started by stretching the spring 3 cm, one complete oscillation takes 4 seconds.
11Alexandr11 [23.1K]

Answer:

A. 5.16 s.

B. 5.66 s.

Step-by-step explanation:

A.

For a simple harmonic motion,

T = 2pi (sqrt * (l/g))

Given:

L1 = 3 cm

T1 = 4 s

L2 = 5 cm

T2 = ?

4 = 2pi*sqrt(3/g)

g = 7.4

At, L2,

T2 = 2pi*sqrt(5/7.4)

= 5.16 s.

B.

M1 = M1

M2 = 2*M1

For a simple harmonic motion,

T = 2pi (sqrt * (m/k))

4 = 2pi (sqrt * (M1/k))

M1/k = 0.405

Inputting the above values,

T2 = 2pi (sqrt * (2*M1/k))

= 2pi (sqrt * (2 * 0.405))

= 5.66 s.

4 0
2 years ago
Two similar figures have sides in the ratio of 2:3. If a side of the smaller triangle has a length of 7, what is the length of t
dusya [7]
1) 7/2 = 3.5
2) 3.5 * 3 = 10.5
answer: 10.5 
4 0
3 years ago
Read 2 more answers
the number of employees for a certain company has been decreasing each year by 2% if the company currently has 870 employees and
Readme [11.4K]

Step-by-step explanation:

Number of employees in 9 years

= 870 * (1 - 0.02)⁹

= 870 * (0.98)⁹

≈ 725 employees.

8 0
3 years ago
Please Answer This, the question is on the picture. it needs to be a fraction
marshall27 [118]

Answer:

x = 33

Step-by-step explanation:

sin 29° = 16/x

x = 33

3 0
3 years ago
Given that the the graph represents a system of equations on a coordinate plane, how many solutions does the system have?
nalin [4]
Wheres the graph? i cant help if theres no graph, sorry

8 0
3 years ago
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