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1 year ago

URGENT!! Anyone knows this???

Mathematics

1 answer:

barxatty [35]1 year ago

6 0

1.) Associative Property of Addition

This property states that: a+(b+c)=(a+b)+c. It essentially is stating that when multiplying or adding, the order in which numbers are grouped does not matter.

2.) Multiplication Property of Zero

This property states that a•0=0. It is essentially stating that a number multiplied by zero is always zero. For example, if you have 5 friends and want to give each friend 0 cookies, then they all get 0 cookies.

3.) Identity Property of Multiplication.

This property states that a•1=a. In other words, a number multiplied by 1 is always that number. Example: 6•1=6.

4.) Commutative Property of Multiplication.

This property states that a•b=b•a. It states that the order in which numbers are multiplied does not matter.

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Which of the following describes an equilateral triangle? Circle all that apply.

alexdok [17]

Answer:

A, B, and C

Step-by-step explanation:

The equilateral triangle refers to its equivalent sides and angles. So automatically, D would be ruled out.

Equilateral triangles have the same angles, so that would rule out E, because one 90° angle means it is a right triangle. Based on the explanation above, the answer would be A and B. C can be confusing but here's the explanation:

A triangle's sum of interior angles is 180°, so if a triangle has three sides, it also has three angles. So if you divide 180 into 3 equal parts, you get 60° each. So technically C is correct.

Answers: A, B, and C.

6 0

3 years ago

Read 2 more answers

Find the missing length indicated

Rina8888 [55]

Answer:

c = 175

Step-by-step explanation:

When the height of a right triangle is shown this way (at right angles with the hypotenuse, It can be found by using the way the hypotenuse is broken up. The following proportion works.

576/x = x / 49 Cross multiply

x^2 = 576 * 49

sqrt(x^2) = sqrt(576*49)

x = 24 * 7

x = 168

But that's not what you want (although it is close).

What you want is the hypotenuse to the small lower triangle

c = ?

a = 49

b = 168

c^2 = 49^2 + 168^2

c^2 = 2401 + 28224

c^2 = 30625

c = sqrt(30625)

c = 175

4 0

3 years ago

A 200 gallon tank initially contains 100 gallons of water with 20 pounds of salt. A salt solution

luda_lava [24]

Set up a differential equation using rate of salt going in minus rate going out.

Rate = dS/dt = salt/gal* gal/min

Also the number of gallons in tank is increasing at (4-2) gal/min = 2 gal/min
The volume of tank at any given time = 100+2t

Differential Equation:
$\frac{dS}{dt} = (\frac{1}{4})(4) - (\frac{S}{100+2t}) (2)
 \\ \\ \frac{dS}{dt} = 1 - \frac{S}{t + 50} \\ \\ \frac{dS}{dt} + (\frac{1}{t+50}) S = 1$

Use integrating factor of t+50
$[S(t+50)]' = t+50$

Integrate both sides
$S(t+50) = \frac{t^2}{2} + 50t + c$
Solve for constant c given S(0) = 20
c = 1000

Tank is full at 200 gallons when t =50
100+2t = 200 ---> t = 50

S(50) = 47.5

Final Answer: There are 47.5 pounds of salt

4 0

3 years ago

Determine the quadrant ( I, II, III, and IV ) or axis (x and y ) where each of the following point is located.

Ipatiy [6.2K]

Answer:

1. ( 0,-6 ) is y-axis

2. ( 15,4 ) is l quadrant

3. ( 100, -5 ) is lV quadrant

4. ( 0.004, .05 ) is l quadrant

5. ( -4,0 ) is x-axis

8. ( -7.5, -6.3 ) is lll quadrant

9. ( 0.1000) is y-axis.

7 0

2 years ago

PLEASE HELP<br><br> 10 POINTS!

valentina_108 [34]

Answer: Point C :&382&:$

6 0

3 years ago

Read 2 more answers