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Harman [31]
3 years ago
12

Please help with some RSM homework:(​

Mathematics
1 answer:
bija089 [108]3 years ago
4 0

Answer:

k<3.5 or k>3.5

Step-by-step explanation:

k²-7k+12.25>0

(k-3.5)²

k²-7k+12.25

k²-2k·3.5+(√12.25)²

(k-3.5)²

k-3.5<0 or k-3.5>0

k-3.5 or k-3.5

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Which of the following sets is NOT closed under addition.
Veronika [31]

Answer:

Step-by-step explanation:

The odd numbers.

Suppose you have 31 and 27 when you add these two together, you get 58 which is not an odd number.

If you need a more mathematical proof, you could do it this way.

2x+1

2x is even. Anything multiplied by 2 is even. When you add 1 you get an odd number

So continue on

2y + 1 is the other number.

2x + 1 + 2y + 1 = 2(x + y) + 2

2 (x + y ) is even. When you add 2 to it, nothing changes. The result is still even.

7 0
3 years ago
Gloria sold 78 apples, Berta sold 4 less than 9 times as many apples as Gloria. How many apples did Berta Sell?
slega [8]

Answer:

698 apples

Step-by-step explanation:  78*9 equals 702.  She sold 4 less than that so you need to subtract 4.  702-4=698 apples Berta sold.

5 0
3 years ago
Can someone please help me find the surface area of C before 8:30?!
avanturin [10]
There are some area calculators on google if you need but I will try work it out..... if I don’t know I won’t send another answer
4 0
3 years ago
Is (-3, 1) a solution to this system of inequalities?
Maksim231197 [3]

Answer:

No

Step-by-step explanation:

5(-3)= -15

5(1)= 5

-15+5=-10

-10 is greater than -19 not less than or equal too.

Hope this helps!

5 0
2 years ago
A bag contains colored tiles.
KiRa [710]

Answer:

0.5

Step-by-step explanation:

Add everything together 33+66+33 = 132

Then 66/132, = 1/2 or 0.5

6 0
3 years ago
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