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VladimirAG [237]
3 years ago
13

Help me 30 points plzzzz

Mathematics
2 answers:
Jlenok [28]3 years ago
6 0
The answer is 8.7 mm
MA_775_DIABLO [31]3 years ago
5 0

Answer:

112.3

Step-by-step explanation:

A = 9 × 8.7 + 2(8 + 9) = 112.3

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Please help with a, b, and c!!
padilas [110]
(a). 
The product of two binomials is sometimes called FOIL.
It stands for ...

       the product of the First terms                (3j  x  3j)
plus
       the product of the Outside terms          (3j  x  5)
plus
       the product of the Inside terms            (-5  x  3j)
plus
       the product of the Last terms                (-5  x  5)

FOIL works for multiplying ANY two binomials (quantities with 2 terms).

Here's another tool that you can use for this particular problem (a).
It'll also be helpful when you get to part-c .

Notice that the terms are the same in both quantities ... 3j and 5 .
The only difference is they're added in the first one, and subtracted
in the other one.

Whenever you have     

              (the sum of two things) x (the difference of the same things)

the product is going to be

                 (the first thing)²  minus  (the second thing)² .

So in (a), that'll be      (3j)² - (5)²  =  9j² - 25 .

You could find the product with FOIL, or with this easier tool.
______________________________

(b).
This is the square of a binomial ... multiplying it by itself.  So it's
another product of 2 binomials, that both happen to be the same:

                            (4h + 5) x (4h + 5)  .

You can do the product with FOIL, or use another little tool:

The square of a binomial        (4h + 5)²    is ...

         the square of the first term               (4h)²
plus
         the square of the last term                (5)²
plus
         double the product of the terms      2 · (4h · 5)
________________________________

(c).
Use the tool I gave you in part-a . . . twice .

The product of the first 2 binomials is           (g² - 4) .

The product of the last 2 binomials is also    (g² - 4) .

Now you can multiply these with FOIL,
or use the squaring tool I gave you in part-b .

5 0
3 years ago
Read 2 more answers
The number is odd. the number is more than 7 times 3. the number is less than 5 times 5. the myster number is what?
Ksju [112]
23 is your answer i think
4 0
3 years ago
Read 2 more answers
What are the solution(s) to the quadratic equation 50 - x² = 0?
grandymaker [24]

Answer:

The answer is C.

Step-by-step explanation:

50-x^2=0

x^2=50

x=\pm \sqrt{50} =\pm \sqrt{25*2}=\pm 5\sqrt{2}

The answer is C (I am assuming that it isn't 5/2).

7 0
2 years ago
2.5_2.05 answer plz help
mezya [45]
Your answer is 0.45 I think
7 0
3 years ago
Read 2 more answers
Finding the area of each figure
Levart [38]

The area of the figure i can see is 68.89 cm squared

7 0
3 years ago
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