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Sonbull [250]
3 years ago
10

Which addition property is demonstrated by this problem? 23 + (4 + 3) = (23 + 4) + 3

Mathematics
1 answer:
makvit [3.9K]3 years ago
8 0
Answer;
Commutative Property

It is considered commutative when changing the order of the operands does not change the result.

(a brainliest would be appreciated)
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Cristal had $157 in her checking account. She then made a deposit of $160. Find her new account balance.
Natali5045456 [20]
317$ is her new acc balance
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3 years ago
1/3 (4 - 5x - 1) what does it equal?
Neko [114]

Answer:

.9-1.5x

Step-by-step explanation:


7 0
3 years ago
Write the equation of a line with a slope of −1 and a y-intercept of −6. (2 points)
tatyana61 [14]

Answer:

y = -1x - 6

Step-by-step explanation:

Hi!

The format of the equation of a line is y = mx + b

m is the slope and b is the y-intercept

We just need to substitute in the values you gave for the variables and we get the answer,

3 0
3 years ago
The number y of deer in a county after x years can be modeled by y=0.75x^2 + 10.5x + 1300. When were there about 2000 deer? Roun
Lemur [1.5K]

Answer:

24 years

Step-by-step explanation:

We are told that the model of number of deers is;

y = 0.75x² + 10.5x + 1300

Where;

y represents number of deers

x represents number of years

Now, we want to find how many years it will take to get to 2000 deers.

Thus;

2000 = 0.75x² + 10.5x + 1300

0.75x² + 10.5x + 1300 - 2000 = 0

0.75x² + 10.5x - 700 = 0

Using quadratic formula, we have;

x = [-b ± √(b² - 4ac)]/2a

x = [-10.5 ± √(10.5²- (4*0.75*-700)]/(2*0.75)

x = [-10.5 ± √(110.25 + 2100)]/(1.5)

x = [-10.5 ± √2210.25]/(1.5)

x ≈ -38 or 24

Number of years can't be negative, so we will take the positive value.

So, x = 24 years

3 0
3 years ago
What is 63 over 75 as a decimal?
marissa [1.9K]

Answer:

0.84

Step-by-step explanation:

Use a calculator.  That would be 0.84.

                               3*21

Note that 63/75 = ---------- = 21/25.  Multiplying top and bottom by 4 results

                                3/25                   in 0.84 (so this answer checks out ok)

3 0
3 years ago
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