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mars1129 [50]
3 years ago
15

HELP!! Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are add

ed together, the y term is eliminated?
1/4x - 1/6y =5

4/5x + 3/8y =10


a. 18 times the first equation and 8 times the second equation
b. –18 times the first equation and 8 times the second equation
c. 8 times the first equation and 6 times the second equation
d. –8 times the first equation and 6 times the second equation
Mathematics
1 answer:
vekshin13 years ago
4 0
1/4*x -  1/6*y= 5    |*18    
4/5 *x + 3/8*y = 10 | *8

18/4*x                  -3*y= 90
32/5*x                + 3y   = 80
-------------------------
18/4*x+32/5*x   /       = 170

The answer is a





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Which of the following relations are functions?
Alisiya [41]
<span>{(c,e),(c,d),(c,b)} is NOT a function since the input c has multiple outputs (e,d,b). So choice B is out

</span><span>{(b,b),(c,d),(d,c),(c,a)} is NOT a function either. The input 'c' corresponds to the output 'd' and 'a' at the same time. So choice C is out too
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7 0
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pickupchik [31]
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3 years ago
The diameter of a circle is 36 yards. What is the circle's circumference?<br> Use 3.14 for .
Firlakuza [10]
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113.04

Explanation:
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I need help on these please ​
sleet_krkn [62]

Answer:

its the third answer, fifth, and first. Im not sure tho.

Step-by-step explanation:

if it isnt right im so sorry T^T

5 0
3 years ago
I need help!<br><br>solve for x​
Volgvan

Answer:

x = 40

Step-by-step explanation:

Here's a fun fact, all of those angles actually add up to 360 degrees!

How do we know this? Well if you were to draw a small arc between each of the lines, you would see that the arc would end up making a circle. And remember, circles have 360 degrees!

Now we can do some basic algebra. Add up all the angles and set that equal to 360.

(2x) + (x) + (3x + 20) + (2x+20) = 360.

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8x = 320

x = 40

Hope this helped!

4 0
2 years ago
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