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3 years ago

I am trying to solve this but I don't understand.

Mathematics

1 answer:

VashaNatasha [74]3 years ago

5 0

Answer:

a = 42 b = 21

Step-by-step explanation:

a is 42 since it ks vertically opposite 42

To solve for b

360 - (42×2)........to get the angle next to a

=276... Divde answer by 2. Bc there are two of the angles

276÷2 =138

138 + 2b =180

2b = 180 - 138

b = 42 ÷ 2

b = 21

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Step-by-step explanation:

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3 years ago

The Department of Motor Vehicles reports that 32% of all vehicles registered in a state are made by a Japanese or a European aut

Mandarinka [93]

Answer: C. a parameter.

Step-by-step explanation:

In statistics, a parameter is a measure ( such as population mean , population proportion... ) generated from the entire population .
A statistics is also a measure( such as sample mean , sample standard deviation , sample proportion,..) but generated from the sample taken from population.

Given : The Department of Motor Vehicles reports that 32% of all vehicles registered in a state are made by a Japanese or a European automaker.

Here, Department as considered the entire population of vehicles registered in a state are made by a Japanese or a European automaker to find the proportion.

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4 years ago

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Molodets [167]

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3 years ago

Read 2 more answers

Triangle RST was transformed using the rule (x, y) → (–x, –y). The vertices of the triangles are shown.

Gnoma [55]

Triangle RST was transformed by using the rule (x,y) → (-x,-y) and the transformation is described by the transformation of 180° rotation about the origin.

Transform the shapes on a coordinate plane by rotating, reflecting, or translating them. Here we have transformed the triangle using the rotation method.

Rotation is the geometric transformation that revolves each point in a shape a predetermined number of degrees around that point. When the number of degrees is positive, the shape spins counterclockwise; when the number of degrees is negative, it rotates clockwise. The following is a broad description of how rotation about the origin can be transformed.

(X,Y) to rotate 90° (-y, x)

180° rotation (x, y) (-x,-y)

To rotate (x,y) 270° (y, -x)

Here the points change to R'(-1,-1) , S'(-3,-1) and T'(-1,-6).

A 180° rotation about the origin will be the transformation.

The triangles RST and R'S'T' are first plotted on a graph. The graph is provided for your reference below.

The original triangle RST, which was in quadrant 1, has changed to triangle R'S'T', which is in quadrant 3, as shown in the graph. The rotation around the origin is 180° from quadrant 1 to quadrant 3.

<em>Your question was incomplete. Please check below for full content.</em>

Triangle RST was transformed using the rule (x, y) → (–x, –y). The vertices of the triangles are shown.

R (1, 1)

S (3, 1)

T (1, 6) R' (–1, –1)

S' (–3, –1)

T' (–1, –6)

Which describes the transformation?

The transformation was a 90° rotation about origin.

The transformation was a 180° rotation about origin.

The transformation was a 270° rotation about origin.

The transformation was a 360° rotation about origin.