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3241004551 [841]
2 years ago
10

If you prove that △ABD is congruent to △CDB, which general statement best describes what you have proved?

Mathematics
1 answer:
fredd [130]2 years ago
5 0

Answer:

  A: Opposite sides of a parallelogram are congruent

Step-by-step explanation:

The only diagonal involved is BD, so none of the statements regrading diagonals has been proven. The only thing proven is ...

  AB ≅ CD . . . . opposite sides are congruent

  AD ≅ CB . . . . opposite sides are congruent

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Answer:

Step-by-step explanation:

I think this is it but you question want super clear

A = C/2r

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3 years ago
Whats a formula for four is no less than the quotient of a number x nd 2.1
Xelga [282]
4≤x/2.1

To Solve

Multiply by 2.1

8.4≤x
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Use the distributive property to simplify these expressions and combine all like terms.
xenn [34]

Answer:

E. 14x + 14

Step-by-step explanation:

4(3x + 2)  + 2(x + 3) (distribute 4 to 3x and 2)

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3 years ago
Write repeating decimal as a fraction 0.2045454545
Mkey [24]
First, we need to move the decimal point directly in front of the repeating part. To do this, we need to move it two places to the right, which we can do by multiplying by 100.

100 × 0.2045454545 = 20.45454545

Now we need to subtract our original number.

\ 20.454545...\\\underline{-0.204545...}\\20.25

Now we put that over 99 (that's one less than our 100 from earlier)

\frac{20.25}{99}

Our fraction is shaping up, but we shouldn't have a decimal in there. Let's multiply the top and bottom by 100 to get rid of it.

\frac{2025}{9900}

We're going to have to do some simplifying. (the top and bottom are both clearly divisible by 5 and then some)

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4 years ago
A rectangle is 2m long. It’s diagonal is 3m long. Work out the width of the rectangle, to the nearest cm
Marizza181 [45]

Answer:

To the nearest cm

Width of the rectangle = 224cm

Step-by-step explanation:

Imagine a rectangle shape,

both opposite sides are equal, ie both lengths are equal and also applicable to the widths

Length is 2m

It's diagonal is 3m

The diagonal is a line that crosses from one length of a side to the other slantly, ie from one edge to the other, dividing the rectangle into two right angled triangles

The longest line will be the diagonal which is 3m

And the base length will be the length which is 2m

The width is what we are looking for which is represented with x

To solve this problem, we use Pythagoras' rule

x^2 = a^2 + b^2

Let x be diagonal side

a be length

b be the unknown width

Inserting into the formula

x^2 = a^2 + b^2

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9 = 4 + b^2

9 - 4 = b^2

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According to the question, we are asked to give the answer in nearest cm

Since 1cm = 0.01m

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x = 224cm

5 0
3 years ago
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