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3 years ago

If you folded up the shape which cube would it make?

Mathematics

2 answers:

Margarita [4]3 years ago

5 0

I believe that the answer is D.

satela [25.4K]3 years ago

3 0

Answer:

The correct option is D.

Step-by-step explanation:

The given figure is an examples of proper nets of dice. According to this net alternative consecutive sides are opposite sides. It means

1. Heart is opposite to open circle.

2. Square is opposite to closed circle.

3. Empty sides are opposite to each other.

Since square is opposite to closed circle but in option A, square is adjacent to closed circle, therefore option A is incorrect.

Since empty sides are opposite to each other but in option B, empty sides are adjacent to each other, therefore option B is incorrect.

Since heart is opposite to open circle but in option C, heart is adjacent to open circle, therefore option C is incorrect.

The correct option is D.

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Từ điểm A ở ngoài (O) kẻ các tiếp tuyến AB, AC với đường tròn (B và C là các tiếp điểm), BC cắt OA tại D, trên cung nhỏ BC lấy E

Neko [114]

I don’t understand what is that

4 0

2 years ago

Evaluate -3x+4y when x=-7 y=-10

Alexus [3.1K]

Answer:

-19

Step-by-step explanation:

6 0

3 years ago

Simplify the following expression 4x + 3t - 2x- 4

allochka39001 [22]

Answer:

2x + 3t - 4

Step-by-step explanation:

Hi,

To simplify the expression, we must combine like terms. To start, let's combine all of the x-values.

4x + 3t - 2x - 4

When we combine 4x and -2x we get 2x.

2x + 3t - 4

We can't combine anything else. They don't have the same variables and 4 doesn't even have a variable, so 2x + 3t -4 is the simplified expression.

I hope this helps :)

4 0

3 years ago

The weights of dogs at a kennel are Normally distributed with a mean of 18 pounds and a standard deviation of 3.5 pounds.In whic

Ierofanga [76]

Answer:

P(x=25)=P(z=2)=0.9972 or 99.72%

Step-by-step explanation:

Mean = 18 pounds

Standard Deviation = 3.5 pounds

x= 25

We need to find P(x=25)

First, we need to find z-score using formula: $z-score=\frac{x-\mu}{\sigma}$

Finding z-score when x=25

$z-score=\frac{x-\mu}{\sigma}\\z-score=\frac{25-18}{3.5}\\z-score=2$

So, we need to find P(z=2)=P(x=25)

Looking at z-score table we can find P(z=2)

P(z=2)=0.9972 or 99.72%

So, P(z=2)=0.9972 or 99.72%

3 0

3 years ago

Read 2 more answers

In this question, all lengths are in cm. ABC. 3x-4, 2x+12, 7x-2. Given that AB:AC = 1:2 Show that AC:BC = 2:3

tresset_1 [31]

Answer: AC : BC = 22 : 33 = 2 : 3

Step-by-step explanation:

Since we have given that

AB = 3x-4

AC= 2x+12

BC = 7x-2

And AB: AC = 1 : 2

and To show : AC : BC = 2 : 3

So, it becomes ,

$\dfrac{AB}{AC}=\dfrac{3x-4}{2x+12}=\dfrac{1}{2}\\\\2(3x-4)=2x+12\\\\6x-8=2x+12\\\\6x-2x=12+8\\\\4x=20\\\\x=\dfrac{20}{4}\\\\x=5$

So, AC: BC becomes:

$\dfrac{AC}{BC}=\dfrac{3x-4}{7x-2}=\dfrac{2(5)+12}{7(5)-2}=\dfrac{22}{33}=\dfrac{2}{3}$

Hence, proved.

5 0

3 years ago