Which sets of numbers are closed under addition?Choose all answers that are correct.
A.
whole numbers
B.
natural numbers
C.
negative integers
D.
integers
Answers
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Related Questions
Becky adds 3/4 gallon of gasoline into her snow thrower's empty fuel tank. She uses 1/4 gallon for the snowstorm on Friday, and then uses another 1/4 gallon for the snowstorms on Sunday. Is the fuel tank empty after becky uses the snow thrower on Sunday? Explain. If her fuel tank is not empty again, what single action could have been changed so that it is empty again? Explain.
1. Solve x2 + 8x - 6 = 0 using the Quadratic Formula.
three friends are holding a car wash and agree to split the profits equally. they purchase supplies for $75. if their income is $450, how much is each person's share of the profit.
Ramon toll pass account has a value of $32. Each time he uses the toll road, $1.25 is deducted from the account. when the value drops below $10, he must add value to the toll pass, what's an inequality that represents how may times Ramon can use the the toll pass without having to add any value to the toll pass?
Answers
Answer:
First angle is 3 degree
Second angle is 87 degree
Step-by-step explanation:
Let's assume
second angle is x
we are given
one angle is twenty-nine times the other angle
so, first angle is
we know that these two angles are complementary
so, the sum of their measures is 90
First angle + second angle =90
now, we can find second angle
Second angle is
So,
First angle is 3 degree
Second angle is 87 degree
Answers
8x+96=10x+18
2x+18=96
2x=78
x=39
2(5x+9)= 10x+18
8x+96=10x+18
-18 -18
---------------------
8x+78= 10x
- 8x -8x
-----------------
78=2x
78÷2=36
volume of each can by 25%.
a) What will be the height of the new can if the radius remains the same?
b) What will be the radius of the new can if the height remains the same?
*Please show your work*
Answers
V = π × 4² × 12
V = π × 16 × 12
V = 192π
Original Volume = 192π
25% = 0.25
0.25 × 192 = 48
New Volume = Old Volume + 25% Old Volume
New Volume = 192π + 48π
New Volume = 240π
25% = 0.25
12 × 0.25 = 3
New Height = Old Height + 25% Old Height
New Height = 12 + 3
New Height = 15
V = πr²h
240π = π × r² × 15
240 = 15r²
16 = r²
√16 = √r²
4 = r
New Radius = 4
multiply 12 and 0.25 12 X 0.25 = 3
add 2 and 3 2+3=5
So that makes the new height 15
the new radius is 4:46
Answers
Answer:
C. is the correct answer.
Answers
Answer:
I believe the answer is the first one [4/7 ,6/7].
I used process of elimination
The fourth one is unreasonable and impossible.
The third one is more than the weekly requirement.
The second one is the weekly requirement.
The first one would have to be in reason because of that.
Answers
Answer:
12x² - 2x - 30
Step-by-step explanation:
When multiplying binomials, remember to follow the FOIL method:
FOIL =
First
Outside
Inside
Last
Follow FOIL: (3x - 5)(4x + 6)
(3x)(4x) = 12x²
(3x)(6) = 18x
(-5)(4x) = -20x
(-5)(6) = -30
Combine like terms, simplify:
12x² + 18x - 20x - 30
12x² + (18x - 20x) - 30
12x² - 2x - 30
12x² - 2x - 30 is your answer.
~
Answer:
12x²-2x-30=2(6x²-x-15)
Step-by-step explanation:
(3x-5)(4x+6)=12x²-20x+18x-30=
12x²-2x-30=2(6x²-x-15)