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kati45 [8]
3 years ago
9

Which property applies only to addition and multiplication

Mathematics
2 answers:
Artemon [7]3 years ago
7 0
Commutative property I believe <span />
True [87]3 years ago
6 0
The property the applies only to addition and multiplication is the commutative property. It means that the numbers can be arranges in any order.  so for example you will get the same answer whether you do
5+6 or 6+5
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The engine torque y (in foot-pounds) of one model of car is given by y=−3.75x2+23.2x+38.8, where x is the speed (in thousands of
Stels [109]

Answer:

Step-by-step explanation:

If the engine torque y (in foot-pounds) of one model of car is given by y=−3.75x^2+23.2x+38.8

The engine speed is at maximum if dy/dx = 0

dy/dx = -2(3.75)x+23.2

dy/dx = -7.5x + 23.2

since dy/dx = 0

0 =  -7.5x + 23.2

7.5x = 23.2

x = 23.2/7.5

x = 3.093

Hence the maximum torque is 3.09 rev/min

8 0
2 years ago
Find the x-intercept of the parabola of with vertex (1,20) and the y-intercept (0,16). write your answer in this form: (x1,y1),(
svetoff [14.1K]
I assume that the parabola in this particular problem is one whose axis of symmetry is parallel to the y axis. The formula we're going to use in this case is (x-h)2=4p(y-k). We know variables h and k from the vertex (1,20) but p is not given. However, we can solve for p by substituting values x and y in the formula with the y-intercept:

(0-1)^2=4p(16-20)

Solving for p, p=-1/16.

Going back to the formula, we can finally solve for the x-intercepts. Simply fill in variables p, h and k then set y to zero:

(x-1)^2=4(-1/16)(0-20)
(x-1)^2=5
x-1=(+-)sqrt(5)
x=(+-)sqrt(5)+1

Here, we have two values of x

x=sqrt(5)+1 and
x=-sqrt(5)+1

thus, the answers are: (sqrt(5)+1,0) and (-sqrt(5)+1,0).
5 0
3 years ago
for an art project student needs to cover a shoebox with construction paper the shoe box has a length of 14 inches a width of 7
elixir [45]

Answer:

14×7×5=490 i am not sure the answer

4 0
2 years ago
Choose all the angles which are adjacent to &lt; 3<br> Select all that apply
morpeh [17]

Answer:

A and B

Step-by-step explanation:

Adjacent angles are angles that share a common vertex

More specifically adjacent angles are next to each other.

The two angles that are next to ∠3 are ∠4 and ∠2 therefore the correct answer would be A and B

8 0
2 years ago
Birth control pills have a theoretical annual efficacy of 99.5%, but a real-worls efficacy of only 95%. If a college student tak
shutvik [7]

Answer:In my opinion B.0.005 is the correct answer

Step-by-step explanation:

hope it will help you

3 0
2 years ago
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