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gtnhenbr [62]
3 years ago
6

Number 13 and 14 don’t matter but help ‼️

Mathematics
1 answer:
DIA [1.3K]3 years ago
6 0
Find a common denominator for every single pair of fractions
that will help you find the answer
i can do a couple but not all, hopefully my explanation will help you do the rest

3/5 and 3/3
3/15 and 3/15
9/15 and 15/15
15/15 is greater than 9/15
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What is <br><br> (x + 20)<br> ————— = 3x ? <br> 2
nikitadnepr [17]

Answer:

4

Step-by-step explanation:


7 0
3 years ago
Consider the following regular decagon. Choose the correct card to fill in the blanks below. 30° 36° 60 72° 5 10 15 20 of Rotati
pochemuha

The decagon can be divided in 10 equal parts, so if a full rotation is of 360º, a one tenth rotations will be of 360º/10= 36º

So if you rotate the decagon by a multiple of 36º the rotation will be onto itself, i.e. the figure will look as if it wasn't moved.

From the choices given, the angle that will rotate the angle counterclockwise onto himself will be multiple of 36º, the only one is 72º

This figure has 5 lines of symmetry that cross each vertex and 5 lines of symmetry that cross form the midpoint of one side to the midpoint of the oposite side. This is a total of 10 lines of symetry.

So you can reflect the decagon 10 different ways.

The correct choice is C: 36º, 72º, 10, 5

3 0
1 year ago
Special right triangles <br><br> Find the value of each missing variable
Shalnov [3]

Hi!

Rules for solving 30-60-90 triangles are as follows:

* The hypotenuse is double the short leg.

* The short leg times √3 is the long leg

To solve then, we divide 4√21 by √3 and get 4√7. That is x, and to get y we multiply by 2. That is 8√7.

Hope this helps! :D

6 0
3 years ago
Can someone please help me
Natalija [7]
ANSWER: $84

EXPLANATION:

We need to know the surface area of the room with the specified dimensions.

A = 2(wl + hl + hw)

w = 12
h = 8
l = 16

A = 2( (12 * 16) + (8 * 16) + (12 * 8) )

A = 2(192 + 128 + 96)

A = 2(416)

A = 832 square feet


832 / 150 = 5.546666666666667

(Round that up to the next whole number)

You need 6 gallons, or 6(14) dollars
4 0
3 years ago
Name one addition piece of information that is sufficient to prove that the triangles are similar. Please explain!
Sophie [7]

Answer:

the given triangles are right triangles which is enough to prove them 'similar'

but not congruent.

8 0
3 years ago
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