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3 years ago

In the Diagram, DEC is a ____ of ABC across line k.

Mathematics

1 answer:

IRISSAK [1]3 years ago

5 0

Answer:

Reflection

Step-by-step explanation:

A reflection is a mirrored image of a shape. Notice how DEC seems to be a "flipped" version of ABC, hence a mirrored image.

Cheers.

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4. Nguyen is decorating the room for her sister's baby shower party. She is wrapping

Marianna [84]

Answer:

Step-by-step explanation:

Given the information of the conical hat

diameter of 16 inches => Radius = 8 inches
height of 9 inches

=> the slant height of the hat is (use Pythagorean Theorem)

$s^{2}$ = $r^{2} + h^{2}$

<=> $s^{2}$ = $8^{2} + 9^{2}$

<=> s = $\sqrt{145}$

The area (without the base area) of tissue paper will she need to make one hat is:

SA = πrs in2

<=> SA = π*8* $\sqrt{145}$ in2

<=> SA =8 $\sqrt{145}$ π

=> the total tissue paper will she need for 21 hats is:

SA*21

= 8 $\sqrt{145}$ π*21

= 6352,18 in 2

7 0

3 years ago

When cut into 10 equal slices, each slice is 1/10 of the pizza. Express how much of the pizza 7 of these slices would be in deci

Elena L [17]

1 pizza =1/10

7 pizza=7/10

=0.7 answer

5 0

3 years ago

Find a+b,2a+3b,IaI, and Ia-bI. a[5, -12], b=[-3, -6]

DENIUS [597]

Answer: 1) $2\hat{i}-18\hat{j}$ 2) $\hat{i}-6\hat{j}$ 3) 13, 4) 10.

Step-by-step explanation:

Since we have given that

$\vec{a}=5\hat{i}-12\hat{j}\\\\and\\\\\vec{b}=-3\hat{i}-6\hat{j}$

So, we need to find :

1) a + b is given by

$5\hat{i}-12\hat{j}-3\hat{i}-6\hat{j}\\\\=2\hat{i}-18\hat{j}$

2) 2a+3b is given by

$2(5\hat{i}-12\hat{j})+3(-3\hat{i}-6\hat{j})\\\\=10\hat{i}-24\hat{j}-9\hat{i}+18\hat{j}\\\\=\hat{i}-6\hat{j}$

3) |a| is given by

$\sqrt{5^2+(-12)^2}\\\\=\sqrt{25+144}\\\\=\sqrt{169}\\\\=13$

4) |a-b| is given by

$\sqrt{(5+3)^2+(-12+6)^2}\\\\=\sqrt{8^2+6^2}\\\\=\sqrt{64+36}\\\\=\sqrt{100}\\\\=10$

Hence, 1) $2\hat{i}-18\hat{j}$ 2) $\hat{i}-6\hat{j}$ 3) 13, 4) 10.

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3 years ago

In an experiment, the probability that event A occurs is 0.2 and the probability that event B

erma4kov [3.2K]

Answer:

Step-by-step explanation:

P(A and B) = 0.1

3 0

3 years ago

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Lelechka [254]

Answer:

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Step-by-step explanation:

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3 years ago

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