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juin [17]
3 years ago
14

Help i m not smart at all see alot

Mathematics
2 answers:
wel3 years ago
7 0

Answer:

-3

Step-by-step explanation:

You have to bring -16 to the other side by adding.

It would make it: -7a=21

Then you hve to diving the -7.

-7a/-7=21/-7

That would equal -3

Setler [38]3 years ago
6 0

Answer:

A= -3

Step-by-step explanation:

-7a - 16 = 5

( -7a - 16) + 16 = 5 + 16

-7a - 16 + 16 = 21

-7a = 21

7a/7 = - 21/7

a = -3

Hope this helps you

Brainless please

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I need help on this.
valentinak56 [21]

Answer: True

The opposite sides of a parallelogram are congruent or equal in length. The opposite sides are also parallel. It might help to think of a rectangle, which is a special case of a parallelogram.

3 0
3 years ago
Read 2 more answers
15+5n+-5n-5-on<br><br> NEED HELP!
Sliva [168]

Answer:

10

Step-by-step explanation:

5 0
3 years ago
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Some of answers use 3,14 as a substitute for pi.
Katena32 [7]

Personally i think that if you use the pi symbol it would be more accurate because on a calculator there is an pi symbol √ which is the same it will give you an answer closer to an whole number.

4 0
3 years ago
I need both 17 and 18 please
wolverine [178]

Answer:

17. 37

18. 10

Step-by-step explanation:

Use the formula a squared + b squared = c squared. (a^2 + b^2 = c^2)

For number 17 first square both your side lengths of 12 and 35 to get 144 and 1225.

Then add them together to get 1369. That is your c^2 but now you have to find the square root to get your side length of c. Once you find the square root of 1369 you should get an answer of 37 for your missing side.

Using the same formula of a^2 + b^2 = c^2 you square the two side you’re given and get 576 + b^2 = 676

Since it gives you your a and c side lengths all you do is subtract your a from your c (676 - 576) to get 100 which is your b^2. Then you find the square root of 100, which is 10 because 10 times itself is 100, you’ll have your b side length of 10

3 0
3 years ago
757.923 expanded form
tamaranim1 [39]
The expanded form is adding all the digits so the answer is
700+50+7+0.9+0.02+0.003 
6 0
4 years ago
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