11 4perstudent*22children=88pencils 88pencils/8perpack=11packs
Answer:
17 is the answer
Step-by-step explanation:
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Answer:
(-3,-43) and (3,107)
Step-by-step explanation:
input 25x+32 for y
25x+32=5x²+25x-13
32=5x²-13
-5x²=-45
x²=9
x=+-3
which means you separate the solution
x= -3
x= 3
then input the answers you got for x, in both equations. Then you'll get your y.
y=25(-3)+32
-43
Then check your answer.
Then input the other answer you got for x.
I may be wrong, but I tried and checked my answers.
It would be -10 and 1.
-10 + 1 = -9
-10 * 1 = -10
10 should be negative not 1 so that the negative sign will carry over to 9. had 10 been positive and 1 negative the answer would have been positive 9.
in multiplication, signs of the numbers would not matter as long as both have opposing signs to carry over the negative sign. if both number are positive or negative, then the product would be positive.