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3 years ago

EMERGENCY: PLEASE ANSWER AS SOON AS POSSIBLE

Mathematics

1 answer:

spayn [35]3 years ago

3 0

Answer:

<h2>Triangle A B C. Angle B is a right angle.</h2>

Step-by-step explanation:

A dilation with a scale factor of 2 represents a transformation where the preimage ABC would be smaller and the triangle A'B'C' would be twice bigger. That means, the pre-image will be inside the image.

Also, as you can observe in the image, angle B is a right angle. Triangle A'B'C' has B' as a right angle too.

Additionally, line segment B'C' is twice bigger than line segment BC, because the preimage is smaller.

Therefore, the only right answer is the first one.

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Square pyramid is made up of a base with a side length of 10 inches and faces that are triangles with a height of 12 inches what

Nataly [62]

The surface area of the square pyramid is 360 in²

Explanation:

Given that the side length is 10 inches.

The height of the pyramid is 12 inches.

We need to determine the surface area of the pyramid.

The surface area of the pyramid is given by

$SA=s^2+2sl$

Where s is the side length and l is the slant height.

The slant height can be determined using the formula,

$l=\sqrt{h^2+b^2}$

where h = 12 and $b=\frac{s}{2} =5$

Substituting these values in the formula, we get,

$l=\sqrt{12^2+5^2}$

$=\sqrt{144+25}$

$l=\sqrt{169}$

$l=13$

Thus, the slant height is $l=13$

Now, we shall find the surface area of the pyramid.

Substituting $l=13$ and $s=10$ in the formula $SA=s^2+2sl$ , we get,

$SA=10^2+2(10)(13)$

$=100+260$

$SA=360 \ in^2$

Thus, the surface area of the square pyramid is 360 in²

5 0

4 years ago

A teacher keeps track of the number of students that participate at least three times in an optional study session each year. He

Anastasy [175]

Answer:

It is not C got it wrong.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Triangle 4.5 x4.5x4.5x4

LuckyWell [14K]

Chicken wing chicken wing hotdog and balogne chicken an macaroni chillin with my homies

7 0

4 years ago

The sum of twice a number and 4 is 12.

navik [9.2K]

The answer is three because 4×3 = 12

8 0

3 years ago

Read 2 more answers

PLSSS HELP IF YOU TURLY KNOW THISS

jenyasd209 [6]

Answer:

0.143

Step-by-step explanation:

First of all, you're gonna need to know decimal places

0.143

0=ones

1=tenths

4=hundreths

3=thousandths

So now you know that you need to go to the third decimal place

To get your answer you need to divide your numerator (top number) by your denominator (bottom number)

1÷7=0.14285714

You round up the 2 to a 3 because when rounding you take the closest number that isn't being used and if its larger than 5 then you can round up your number

Lastly, you put your answer in the thousandths decimal place

There ya go! Your answer is 0.143

8 0

3 years ago