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irinina [24]
3 years ago
10

What does domain mean

Mathematics
1 answer:
Citrus2011 [14]3 years ago
5 0
Domain means the input of x-values
example: (4,3)                         (2,1)
                 ↑                              ↑
              Domain                    Domain
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Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are added toge
Karolina [17]

The first equation must be multiplied by 18 and second equation must be multiplied by 8

<em><u>Solution:</u></em>

<em><u>Given system of equations are:</u></em>

\frac{1}{4}x -\frac{1}{6}y = 5 --------- eqn 1

\frac{4}{5}x +\frac{3}{8}y = 10 -------------- eqn 2

Multiply the second equation by 8 both sides to remove the fraction in the variable y

8(\frac{4}{5}x +\frac{3}{8}y = 10)\\\\\frac{32x}{5} + 3y = 80 -------- eqn 3

Multiply the first equation by 18 both sides to obtain the coefficient -3 in the variable y

18(\frac{1}{4}x -\frac{1}{6}y = 5)\\\\\frac{18}{4}x -3y = 90 ---------- eqn 4

Add eqn 3 and eqn 4

\frac{32}{5}x +3y +\frac{18}{4}x -3y = 80+90\\\\\frac{32}{5}x+\frac{18}{4}x = 170

Thus the y-term is eliminated

Therefore, first equation must be multiplied by 18 and second equation must be multiplied by 8

6 0
3 years ago
Simplify: <br> (sq root of) a^2 if a&gt;0<br><br> (sq root of) 36x^2 if x≤0
tresset_1 [31]

Answer:


Step-by-step explanation:

1.  (sq root of) a^2 if a>0 => √(a^2) = ±a

2.  (sq root of) 36x^2 if a>0 => ±6x

7 0
3 years ago
Carson throws a ball upward into the air the height of the ball is determined by h(t)= -16t^2 +60t+ 5.5. what is the height in f
Alex777 [14]
The ball was initially thrown from a height of 5.5 feet and 5.5 is y intercept that it throm from 5.5 feet.
6 0
4 years ago
it is 10 3\5 miles from Alston to Barton and 12 1/2 from Barton to Chester.the distance from Alston to Durban,via BARTON and Che
natali 33 [55]
10 3/5 + 12 1/2 =
10 6/10 + 12 5/10 =
23 1/10 =
35 - 23 1/10 =
11 9/10 =
11 9/10 miles
Hope that helps
8 0
3 years ago
Read 2 more answers
Share what you know about the properties of multiplication...!
3241004551 [841]

Answer:

- changing the order of the numbers we are multiplying, does not change the product

Step-by-step explanation:

7 x 8 x 11 x 2 = 11 x 7 x 2 x 8

1232 = 1232

Hope it helps!

3 0
3 years ago
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