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4 years ago

Does anyone know the answer to this (:

Mathematics

2 answers:

polet [3.4K]4 years ago

6 0

Answer:

d. triangle 1 and triangle 4

Step-by-step explanation:

a. 4 can be shown congruent to 3 by a single rotation

b. 3 can be shown congruent to 2 by a reflection

c. 2 can be shown congruent to 1 by a translation

d. 1 can be shown congruent to 4 by both a reflection and a rotation. This is the pair of triangles that requires more than a single rigid motion to show congruence.

Alecsey [184]4 years ago

4 0

Answer:

A. triangle 4 and triangle 3.

Step-by-step explanation:

If you look at triangle 4, you can see that it need to be rotated and reflected.

If you look at triangle 3, you can see that it needs to be reflected.

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4 years ago

What is the Inequality and Solution of: The sum of a number and 19 is at least 8.2 ?

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4 years ago

Match the solid figure to the appropriate formula.

AlekseyPX

1. $L \cdot A=\pi r l$ - Cone

2. $V=\frac{4}{3} \pi r^{3}$ - Sphere

3. $T \cdot A=2 \pi r h+2 \pi r^{2}$ - Cylinder

4. $V=\frac{1}{3} B h$ - Pyramid

5. $L . A=p h$ - Prism

Solution:

1. $L \cdot A=\pi r l$

Lateral surface area of cone = $\pi r l$

where r is the radius of the cone and l is the slant height of the cone.

2. $V=\frac{4}{3} \pi r^{3}$

Volume of sphere = $\frac{4}{3} \pi r^{3}$

where r is the radius of the sphere.

3. $T \cdot A=2 \pi r h+2 \pi r^{2}$

Total surface area of cylinder = $2 \pi r h+2 \pi r^{2}$

where r is the radius of the cylinder and h is the height of the cylinder.

4. $V=\frac{1}{3} B h$

Volume of pyramid = $\frac{1}{3} B h$

where B is the base area of the pyramid and h is the height of the pyramid.

5. $L . A=p h$

Lateral surface area of prism = $p h$

where p is the perimeter of the base and h is the height of the prism.

4 0

3 years ago

Help please? match each system of linear equation with the correct numbers of solutions

Ksenya-84 [330]

Answer:

Step-by-step explanation:

First system: no solution, since the two lines are parallel; they never cross.

Second system: one solution

Third system: infinitely many solutions, since the second equation is a multiple of the first

4 0

3 years ago