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3 years ago

Which statement shows the associative property of addition?

2 answers:

8 0

The associative property of addition is shown in equations where the order in which the evaluation is made does not change the result, providing the numbers remain in the same order. Option B demonstrates this.

agasfer [191]3 years ago

3 0

Answer:

(u + 7) + 13 = u + (7 + 13)

Step-by-step explanation:

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PLEASE HELP! URGENT! ASAP! All work has to be shown. Like EVERYTHING

Korolek [52]

Answer:

Step-by-step explanation:

425 / 2 = 212.5

212.5 - 25 = 187.5

187.5 is the answer because terry had 25 less and the score was combined

5 0

3 years ago

According to the National Association of Realtors, the mean sale price for existing homes in the United States in 2011 was $214,

Free_Kalibri [48]

<h3>Answer: 49.85% (second answer choice)</h3>

===========================================

Explanation:

mu = 214300 = population mean of home values

sigma = 41000 = population standard deviation of home values

Compute the z score for the raw score x = 91300

z = (x-mu)/sigma

z = (91300-214300)/41000

z = -123000/41000

z = -3

This tells us the raw score x = 91300 is exactly 3 standard deviations below the mean.

--------------------------

Compute the z score for the raw score x = 214300

z = (x-mu)/sigma

z = (214300-214300)/41000

z = 0/41000

z = 0

This is expected as the raw score x = 214300 is exactly at the mean

--------------------------

Finding P(91300 < x < 214300) is equivalent to computing P(-3 < z < 0)

Recall that the empirical rule states roughly 99.7% of the distribution is within 3 standard deviations of the mean.

In terms of an equation, this means P(-3 < Z < 3) = 0.997 approximately.

Cut 99.7% in half to get (99.7%)/2 = 49.85%

So, P(-3 < Z < 0) = 0.4985 approximately.

4 0

3 years ago

What is the area of a pizza with a diameter of 12 inches? Round to the nearest tenth. Use 3.14 for pi.

Flauer [41]

Answer:

$\boxed {\boxed {\sf a \approx 113.0 \ in^2}}$

Step-by-step explanation:

Assuming this pizza is a circle, we can use this formula for area:

$a= \pi r^2$

1. Find Radius

We are given the diameter: 12 inches, but the formula uses radius.

The radius is half the diameter, or:

$r=\frac{d}{2}$

$r=\frac{12 \ in}{2}$

$r= 6 \ in$

2. Calculate Area

Substitute the radius (6 inches) in for r. The question also asks us to use 3.14 for pi.

$a= (3.14)(6 \ in)^2$

Solve the exponent.

(6 in)²= 6 in* 6 in= 36 in²

$a= (3.14)(36 \ in^2)$

Multiply.

$a= 113.04 \ in^2$

3. Round

The question asks us to round to the nearest tenth.

The 4 in the hundredth place tells us to leave the 0 in the tenth place.

$a \approx 113.0 \ in^2$

The area of the pizza is about 113.0 square inches.

7 0

3 years ago

Help please Um idk what’s going on

Arada [10]

The answer would be A.) since f(-2)=x+3 leads to f(-2)= -1/2x + -3/2 which is -2 since -4/2 is -2, so then we have f=-1

3 0

4 years ago

Read 2 more answers

What is the angle measurement of angle P?

Solnce55 [7]

Answer:

Step-by-step explanation:

p = 180 - [ 360 - ( 130 + 110 ) ]

= 180 - [ 360 - 240 ]

= 180 - 120

p = 60

5 0

2 years ago