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mezya [45]
3 years ago
6

In the figure, / is mapped onto / by a 180° rotation. Angle B corresponds to which angle in /? A. X )B. Y) C. Z) D. C)

Mathematics
2 answers:
GrogVix [38]3 years ago
4 0
Which of the following best<span> represents a rotation
</span>
B.
Luden [163]3 years ago
3 0

Answer:

The correct option is B.

Step-by-step explanation:

From the given diagram it is clear that the measure of angle B is 90 degrees because it is a right angled triangle.

The coordinates of vertex B are (-5,2).

If a point P(x,y) is rotate 180 degree about the origin, then

(x,y)\rightarrow (-x,-y)

The coordinates of image of B are

B(-5,2)\rightarrow B'(-(-5),-(2))=B'(5,-2)

The coordinates of image of B are (5,-2). These are the coordinates of vertex Y and the measure of angle Y is 90 degree.

The angle Y corresponds to angle B. Therefore the correct option is B.

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Find the length of a side of a square if its área is 4/25 cm2
USPshnik [31]

Answer:

2/5cm or 0.4cm

Step-by-step explanation:

Area of square = Side^{2}

Thus, Side = \sqrt{Area}

= \sqrt{4/25}

= 2/5 cm = 0.4cm

4 0
3 years ago
The factory has 6 cutting machines. Each cutting machine cuts 105 parts every 3 minutes. How many parts can all 6 cutting machin
Murrr4er [49]

Answer:28

Step-by-step explanation:

8 0
3 years ago
6) find HJ<br> 8)find IK
Anastasy [175]

Answer:

HJ = 17

IK = 30

Step-by-step explanation:

to find HI :

GH : 2

HI : ?

IJ : 12

GI : 7

HI = GI - GH

HI = 7- 2

HI = 5

HI + IJ = HJ

5 + 12 = HJ

17 = HJ

To find IK

IJ = ?

JK = 12

KL = ?

IL = 49

JL = 31

To find IK we need to find KL and IJ

KL = JL - JK

KL = 31 - 12

KL = 19

IJ = IL - (JK + KL)

IJ = 49 - 31

IJ = 18

IK = IJ + JK

IK = 18 + 12

IK = 30

4 0
3 years ago
What is the importance of mathematical sentences?
ser-zykov [4K]

Answer:

A mathematical sentence makes a statement about two expressions.

Step-by-step explanation:

8 0
2 years ago
Cube A has a volume of 9 in3. Cube B has a volume of 5 in3. Which of the following expresses the ratio of the side length of Cub
Troyanec [42]

Using the formula for the volume of a cube, it is found that the expression which gives the ratio of the side length of Cube A to the side length of Cube B is:

r = \frac{3^{\frac{2}{3}}}{5^{\frac{1}{3}}}

Which means that option E is correct.

The <em>volume of a cube</em> of side length l is given by:

V = l^3

For Cube A, the volume is of 9 cubic inches, hence:

l_a^3 = 9

l_a = \sqrt[3]{9}

l_a = 9^{\frac{1}{3}}

l_a = 3^{\frac{2}{3}}

For Cube B, the volume is of 5 cubic inches, hence:

l_b^3 = 5

l_b = \sqrt[3]{5}

l_b = 5^{\frac{1}{3}}

Then, the ratio is:

r = \frac{l_a}{l_b} = \frac{3^{\frac{2}{3}}}{5^{\frac{1}{3}}}

To learn more about the volume of a cube, you can take a look at brainly.com/question/13030328

5 0
2 years ago
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