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miv72 [106K]
3 years ago
7

Just two Algebra questions. Thank you :)

Mathematics
1 answer:
tekilochka [14]3 years ago
8 0
4m^6 - 16m^{10}

= (2m^3)^2 - (4p^5)^2

= (2m^3 -4p^5)(2m^3 + 4p^5)

================================
This expression is the difference of 2 squares :

\bf 9n^4 - 49n^6

= (3n^2)^2 - (7n^4)^2

= (3n^2 + 7n^4) (3n^2 - 7n^4)

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64.3 - 3 x 2 by the power of 3 divided by two
kolbaska11 [484]
If you meant:

64.3-3*(2³)/2

That would be 52.3 :)
8 0
3 years ago
Read 2 more answers
8. Bob bought a pair of tennis shoes on sale
mr_godi [17]

Answer:

20%

Step-by-step explanation:

So, I would set this up as a proportion-

72          x

90        100

Cross multiply-

100 x 72 = 7200

Divide-

7200/90 = 80

Subtract-

100 - 80 = 20

So, it is a 20% decrease

4 0
3 years ago
What is cos P?  Right triangle PQR with a short leg measuring 5, a long leg measuring 12, and the hypotenuse as 13
OLga [1]
It depends how you name the sides of triangle.
Look at picture at the result.

cos\alpha=\frac{12}{13}\\
cos\beta=\frac{5}{13}

PS. Sorry for my terrible drawing but I did it as fast as possible :)

3 0
3 years ago
What is the probability of rolling a product of 30 when rolling two dice?
Nimfa-mama [501]
It has a probability of 2 out of 36 chances as there are only two ways it can happen out of 36 different combinations that can be rolled. Product means multipication also in Maths 

<span>The first probability on the first roll is that Dice 1 must be a 5 and Dice 2 must be a 6 so that 5x6=30 </span>

<span>The second probability on the second roll is that Dice 1 must be 6 while Dice 2 must be 5 so that 6x5=30 </span>

<span>That is the only two ways out of 36 different combinations that can be made by rolling to Die. Therefore the probability is 2 out of 36

</span>
8 0
3 years ago
SOMEONE PLEASE ACTUALLY HELP MEEE!!!!! Write an example of the Identity Property of Addition using the number 43.
masya89 [10]

Answer:

40 + 3

Step-by-step explanation:

=43. you dont need to use it for 0, even though that's adding too. and multiplying isnt addition.

8 0
3 years ago
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