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Vedmedyk [2.9K]
3 years ago
13

I need help!! It’s proving trapezoids theorems

Mathematics
1 answer:
Lorico [155]3 years ago
8 0

Answer:


Step-by-step explanation:

It's hard to see

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I will give brainly if right
snow_tiger [21]

Answer:

Alternate interior angles are congruent, so 2x+5 = 3x -2.  X=7

Step-by-step explanation:

4 0
3 years ago
Find the product of (x-7)^2 and explain how it demonstrates the closure property of multiplication
iogann1982 [59]

A. x²-14x+49; is a polynomial

Step-by-step explanation:

(x-7)² can be written as (x-7)(x-7)

Expanding the expression

x(x-7)-7(x-7)

x²-7x-7x+49

x²-14x+49 ⇒⇒A quadratic function, which is a polynomial of degree 2

This function demonstrates the closer property of multiplication in that the change in order of multiplication does not change the product. This is called commutative property.

(x-7)(x-7)

-7(x-7)+x(x-7)

-7x+49+x²-7x

x²-14x+49

Learn More

Polynomials :brainly.com/question/9601478

Keywords : product, closure property of multiplication,

#LearnwithBrainly

4 0
3 years ago
A store donated 2 1/4 cases of crayons to a day care center. Each case holds 24 boxes of crayons; each box holds 8 crayons. How
gladu [14]
C. Because 8x24=192 and then you have to do 192x2.25 which gives you the answer 432!
7 0
4 years ago
Read 2 more answers
This would be the last one please help as in now
lawyer [7]
D

4x - 2 = 10; 3

4(3) - 2 = 10

12 - 2 = 10

10 = 10
5 0
3 years ago
What is m∠KNL?<br> Enter answer in box
kodGreya [7K]

I want to talk about X's. I'll start by talking about this X - a cross (photo 1). Specifically, a cross made of two perpendicular lines - lines that meet each other at right angles all around. What's special about a cross? There's the religious significance, but in our case, there's also the <em>symmetry</em>. The quick, intuitive definition of symmetry is some quality that a thing has where, if you do something to it, it'll still look the same. Your body is symmetric; the left side of our bodies looks like we took the right side and flipped it - they're mirror images of each other.

One of the symmetries of this cross is right here. (Picture 2) It splits the cross into <em>two identical halves</em>, one a mirror image of the other. Most importantly, <em>the angles on each side of the line are identical</em>. We can draw this same mirror into our problem, too (picture 3). This symmetry tells us that those two unknown angles are exactly the same - <em>equal</em>. So, if angle MNJ is 5x+2 and angle LNK is 3(x+14), we now know that

5x + 2 = 3(x + 14), or, getting our algebra sorted:

5x + 2 = 3x + 42

2x = 40

x = 20

Now that we know x, we can find MNJ - which, because X's are symmetric, is exactly the same angle as LNK. Crunching the numbers, we find

m∠MNJ = m∠LNK = 5(20) + 2 = 100 + 2 = 102°.

Side note: the technical term for pairs of angles like MNJ and LNK is vertical angles. What we've shown here is, because of the symmetry of intersecting lines, vertical angles are always equal.

7 0
3 years ago
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