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Stels [109]
3 years ago
13

Write the expression in factored form. 81m^2-49

Mathematics
1 answer:
ivolga24 [154]3 years ago
5 0
We can use the difference of two squares, which is:

x^2 + y^2 = (x-y)(x+y)

So,

(9m-7)(9m+7)

Hope this helps!
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33 Given: RS and TV bisect each other at point X<br>TR and SV are drawn<br>Prove: TR || SV​
Reptile [31]

Answer:

Step-by-step explanation:

Given that RS and TV bisect each other at point X

Join RT and VS

Now we have two triangles RXT and VXS with a common vertex X

Compare these two triangles

RS=XS (mid point since bisect)

TX=XV (mid point)

Angle RXT = Angle VXS (vertically opposite angles)

Hence by SAS postulate the two triangles are congruent

Corresponding angles would be equal

i.e. angle RTV = Angle TVS

Since alternate angles made by a transversal are equal

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5 0
4 years ago
The length of the base of an isosceles triangle is x. The length of the leg is 2x-2. The Perimeter of the triangle is 46. Find X
Contact [7]

Answer:

<h2><u><em>x = 10</em></u></h2>

Step-by-step explanation:

The length of the base of an isosceles triangle is x. The length of the leg is 2x-2. The Perimeter of the triangle is 46. Find X.

2x - 2 + 2x - 2 + x = 46

5x - 2 - 2 = 46

5x = 50

x = 50 : 5

x = 10

8 0
3 years ago
Please help .
Iteru [2.4K]

702 can not be written as the product of 2 prime numbers, because if you divide 702 by 2 then you get 351 and that is not a prime number. Therefore 702 is a prime number.

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A chef got 5 bags of onions. The red onions came in bags of 3 and the yellow onions came in bags of 6. If the chef got a total o
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Step-by-step explanation:

4 0
3 years ago
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