3 years ago

-3^2+5(-3)+9? the answer is not -15

Mathematics

2 answers:

lapo4ka [179]3 years ago

7 0

Three is the answer!!!

Natalka [10]3 years ago

3 0

Use PEMDAS. (Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction) to remember the order of operations.
Parentheses first. -3^2+(-15)+9
Exponent 9+(-15)+9
There's no M/S (multiplication/division)
A/S add and get 9+(-15)=-6
-6+9=3.

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The first four numbers hexa said were 16 32 48 and 64 if she keep counting this way what is the 99th Number hexa will say

rewona [7]

Answer:

316,912,650,057,057,350,374,175,801,344

Step-by-step explanation:

You can see that this sequence is geometric so you need to know the geometric sequence which is $x_{n} =r^{n-1}$ and if you plug in every thing you get $x_{n}$ = $2^{99-1}$ which would be $2^{98}$ which is 316,912,650,057,057,350,374,175,801,344