♥ Which sets of numbers are closed under addition?
♥ Choose all answers that are correct.
A.
whole numbers
B.
natural numbers
C.
negative integers
D.
<span>integers
♥are all closed under addition.
♥Therefore ALL are right. </span>
Answer:
Hi
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Step-by-step explanation:
Answer:
3x−4y=9 −3x+2y=9
Add these equations to eliminate x: −2y=18
Then solve−2y=18
for y: −2y=18 −2y −2 = 18 −2 (Divide both sides by -2)
y=−9
Now that we've found y let's plug it back in to solve for x.
Write down an original equation: 3x−4y=9
Substitute−9for y in 3x−4y=9: 3x−(4)(−9)=9
3x+36=9(Simplify both sides of the equation)
3x+36+−36=9+−36(Add -36 to both sides)
3x=−27 3x 3 = −27 3 (Divide both sides by 3) x=−9
Answer: x=−9 and y=−9
Hope This Helps!!!
Answer:
m<1=47 and m<2=29
Step-by-step explanation:
I'm going to write out all of the money he gets each week, and when he has enough to pay back his sister, I will subtract the money he payed her.
35 5 40 75 110 145 180 215 250 285 220 255 290 325 360 395 430 465 500 535
Now count how many numbers there are (20), and that's your answer! :)
The answer is 20
Hopefully this helps! If you have any more questions or don't understand, feel free to DM me, and I'll get back to you ASAP! :)
