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VashaNatasha [74]
3 years ago
8

Select from the drop-down menu to correctly identify the property shown.

Mathematics
2 answers:
FinnZ [79.3K]3 years ago
5 0
This is the Commutative Property of addition. called Commutative because the numbers move around to the other order, or "commute"
mafiozo [28]3 years ago
5 0

Answer:

commutative property

Step-by-step explanation:

7.2 + (-5.5) = -5.5 + 7.2

Associative property:

In associative property, we can add or multiply the numbers by grouping the numbers in any order

Commutative Property

In commutative property, we can add or multiply the numbers by changing the order of numbers

7.2 + (-5.5) = -5.5 + 7.2

Here the order of numbers are changed. So commutative property is applied to this equation.

You might be interested in
What are the potential solutions to the equation 2ln(x+3)=0
skad [1K]
2\ln(x+3)=0\implies \ln(x+3)^2=0\implies e^{\ln(x+3)^2}=e^0\implies (x+3)^2=1

Expanding the left side gives

x^2+6x+9=1\implies x^2+6x+8=0\implies (x+4)(x+2)=0

which gives two solutions, x=-4 and x=-2. But if x=-4, then \ln(x+3)=\ln(-1), but this number isn't real, so x=-4 is an extraneous solution. Meanwhile if x=-2, you get \ln(-2+3)=\ln1=0, so this solution is correct.

"Potential solutions" might refer to both possibilities, but there is only one actual (real) solution.
4 0
3 years ago
Read 2 more answers
Element X decays radioactively with a half life of 11 minutes. If there are 870 grams
exis [7]

Answer:

27.5 minutes

Step-by-step explanation:

Using,

R/R' = 2ᵃ/ᵇ------------------ Equation 1

From the equation,

R = mass of Element X before radioactive decay, R' = mass of element X after radioactive decay, a = Time taken, b = half life.

Given: R = 870 grams, R' = 154 grams, b = 11 minutes.

Substitute these values into equation 1

870/154 = 2ᵃ/¹¹

(870/154)¹¹ = 2ᵃ

Solve for a

2ᵃ = (5.649)¹¹

2ᵃ = 187061.26

Taking the logarithm of both side,

Log2ᵃ = Log(187061.26)

⇒ a = log(187061.26)/log2

a = 8.272/0.301

a = 27.5 minutes

5 0
3 years ago
The number 18 is what % of 56?
zalisa [80]
X
--- × 56 =18
100

56x = 18×100

× = 18 × 100
- - - - - - -
56

X = 32.14%
7 0
3 years ago
The vertex of the graph of a quadratic function is (2, –1) and the y-intercept is (0, 7). Which of the following is the equation
liraira [26]
I think is d I wanna say D..it might be wrong tho

4 0
3 years ago
Read 2 more answers
Problem 1:
pishuonlain [190]

Answer:

A = 2

D = 1

B = 4

C = 3

Step-by-step explanation:

Height of water in bathtub is a function of water in bathtub.

P(t) = w ; t = time ; w = height of water.

A: P (0)=0 ; At time, t = 0 ; height of water = 0, there is no water on bathtub

2: The bathtub starts out with no water.

D: P (20) = 0 ; At time, t = 20 ; w = 0 ;the tub is empty.

1: After 20 minutes, the bathtub is empty.

B:P (4)= 10 `; At t = 4, w = 10 ; height of water in bath tub is 10

4: The height of the water is 10 inches after 4 minutes

C:P (10) = 4 ; At t = 10, w =4, height of water in bathtub = 4 inches

3: After 10 minutes, the height of the water is 4 inches.

.

5 0
3 years ago
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