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erica [24]
4 years ago
9

How can you prove a triangle is isosceles?

Mathematics
2 answers:
Phantasy [73]4 years ago
7 0
See if two sides are conrent
Fudgin [204]4 years ago
7 0

Answer: Use the distance formula to see if at least two sides are congruent.

Step-by-step explanation:

We know that an isosceles triangle is a triangle whose atleast two sides are congruent.

So if we need to prove a triangle is isosceles then we need to prove that its atleast two sides are congruent. or equal.

Therefore, we can use the first method to prove the triangle is isosceles.

"Use the distance formula to see if at least two sides are congruent.

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When sending a rectangular package through the U.S. Postal Service, the combined length and girth (perimeter of the cross sectio
weqwewe [10]
Let W = width of package
Let H = height of package
Let L = length of package

The perimeter cab be one of the following:
P = 2(L + W),  or
P = 2(L + H)

The perimeter of the cross section cannot exceed 108 in.
When the width is 10 in, then
 2(L + 10) <= 108
 L + 10 <= 54
 L <= 44 in

When the height is 15 in, then
2(L + 15) <= 108
L + 15 <= 54
L <= 39 in

To satisfy both of these conditions requires that L <= 39 in.

Answer: 39 inches
5 0
3 years ago
Please answer these two questions for me
EleoNora [17]

Answer:

The teeing area is the place where you throw every shot. The hole is finished when the disc is sucessfully thrown into the basket.

Step-by-step explanation:

4 0
3 years ago
Resolve into factor..<br>Please solve this by step by step ... ​
lys-0071 [83]

Answer:

9x^4 + 2x²y² + y^4

Arrange the terms

9x^4  + y^4 + 2x²y²

making the first two terms into a² + b²

(3x²)² + (y²)²   + 2x²y²

use the formula of a² + b² = (a+b)² - 2ab

(3x² + y²)²  - 2.3x².y²   + 2x²y²

(3x² + y²)²  - 6x²y² + 2x²y²

(3x² + y²)² - 4x²y²

(3x² + y²)² - (2xy)²

use the formula a² - b²

(3x² + 2xy + y²) (3x² - 2xy + y²)

Step-by-step explanation:

8 0
3 years ago
The cost of 3 notebooks and 2 pens is $10.45. The cost of 4 notebooks and 6 pens is $17.60.
loris [4]

Answer:

Notebooks cost $2.75 and pens cost $1.10.

He can also buy 3 notebooks.

Step-by-step explanation:

In order to find this, we need to create two equations given each of the situations.

3n + 2p = 10.45

4n + 6p = 17.60

Now to solve for n, multiply the top equation by -3 and add together.

-9n - 6p = -31.35

4n + 6p = 17.60

----------------------

-5n = -13.75

n = 2.75

Now that we have the value of notebooks, we can find the amount for pens using either equation.

3n + 2p = 10.45

3(2.75) + 2p = 10.45

8.25 + 2p = 10.45

2p = 2.20

p = 1.10

Finally, to find the number of notebooks that he can purchase, find the cost of a notebook with 3 pens.

n + 3p

2.75 + 3(1.10)

2.75 + 3.30

6.05

Now divide 22 by that number

22/6.05 = 3.63

Since we can't have fractional notebooks, we round down to 3.

5 0
3 years ago
Please help me. Ill give brainest .
garik1379 [7]

Answer:

its D

Step-by-step explanation:

3r+2(12r+7)<5r-8

3r+24r+14<5r-8

27r+14<5r-8

22<-22r

when you devide by a negative the signs flips so

22/-22>-22/-22r

-1>r

7 0
3 years ago
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