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3 years ago

Which equation illustrates the commutative property of addition?

Mathematics

2 answers:

katen-ka-za [31]3 years ago

8 0

12+6+15=12+6+15 is the correct answer

Alex777 [14]3 years ago

5 0

Answer:

12 + 6 + 15 = 12 + 15 + 6

Hope this helps :D

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What is the weight per cm?

Dmitry [639]

Answer:

2/5 g/cm

Step-by-step explanation:

When you want to know "A per B", divide the given quantity of A by the corresponding quantity of B. ("Per" essentially means "divided by".)

It can be convenient to choose table values that make the division easy:

12 g/(30 cm) = 4/10 g/cm = 0.4 g/cm

20 g/(50 cm) = 2/5 g/cm . . . . . . . . . . . . . same as 0.4 g/cm

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3 years ago

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Consider functions f and g below.

Pani-rosa [81]

Answer:

Step-by-step explanation:

f(x) - g(x) = -9x^2 - 7x + 12 - (3x^2 - 4x - 15) Remove the brackets

f(x) - g(x) = -9x^2 - 7x + 12 - 3x^2 + 4x + 15

f(x) - g(x) = -9x^2 - 3x^2 - 7x + 4x + 12 + 15

f(x) - g(x) = -12x^2- 3x + 27

Answer D

3 0

3 years ago

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Please help me it's edgenuity laws of exponents

Roman55 [17]

Answer:

a = 10

b = 6

(a,b) = (10,6)

5 0

3 years ago

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In a sample of digits(0,1,2,3,4,5,6,7,8,9,) what is the probability that a digit is 7 or greater

ad-work [718]

Answer:

$\frac{3}{10}$

Step-by-step explanation:

There are 10 numbers in total. Only three are 7 or greater: 7, 8, 9.

So the answer is $\frac{3}{10}$ .

8 0

3 years ago

The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and

lawyer [7]

Functions can be used to model real life situations.

The hose is 3.2 feet above the ground, at a horizontal distance of 4 fee

The function is given as:

$f(x) =-0.3x^2 + 2x$

At a horizontal distance of 4 feet, the value of x is 4

i.e. $x = 4$

Substitute 4 for x in f(x).

So, we have:

$f(4) =-0.3(4)^2 + 2(4)$

Evaluate the exponent

$f(4) =-0.3(16) + 2(4)$

Open both brackets

$f(4) =-4.8 + 8$

Add -4.8 and 8

$f(4) =3.2$

Hence, the hose is 3.2 feet above the ground