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Eddi Din [679]
3 years ago
12

Solve by subtraction y=-2x-4 y=2x-12 please show work!

Mathematics
2 answers:
andrew11 [14]3 years ago
5 0

Answer:

(2, -8)

Step-by-step explanation:

Add the two equations to solve.  The x-values are cancelled out.  Solve for y.

<em>    y = -2x - 4</em>

<u><em>+  y = 2x - 12</em></u>

<em> 2y = -16</em>

y = -8

Now, plug in the y-value into one of the equations to solve for x.

<em>y = 2x - 12</em>

<em>-8 = 2x - 12</em>

<em>(-8) + 12 = (2x - 12) + 12</em>

<em>4 = 2x</em>

<em>(4)/2 = (2x)/2</em>

x = 2

The solution is (2, -8).

Luden [163]3 years ago
3 0

Answer:

x=2, y = -8

Step-by-step explanation:

y=-2x-4

y=2x-12

-----------------

Subtract the two equations

y=-2x-4

-y=-2x+12

-----------------

0 = -4x +8

Subtract 8 from each side

-8 = -4x+8-8

-8 = -4x

Divide by -4

-8/-8 = -4x/-4

2 =x

Then solve for y

y = -2x-4

y = -2(2) -4

y = -4-4

y = -8

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The endpoint of a diameter of a circle are (-4,2) and (12,10). What is the y-coordinate for the center of the circle
gavmur [86]

Answer:

  6

Step-by-step explanation:

The center of the circle is the midpoint of the diameter. The midpoint can be found by averaging the coordinates of the end points:

  ((-4, 2) +(12, 10))/2 = ((-4+12)/2, (2+10)/2) = (4, 6)

The y-coordinate of the center is 6.

8 0
3 years ago
4848​% of men consider themselves professional baseball fans. you randomly select 10 men and ask each if he considers himself a
Alexandra [31]
Given the information, we shall proceed as follows:
The given problem is a binomial problem. 
n=10 and p=0.48
thus, the probability that the number who consider themselves baseball fans is:
a] exactly five
P(x=5)=10C5(0.48)^5(0.52)^5=0.244

b] at least 6
P(x>=6)=1-P(x<8)
=P(6)+P(7)+P(8)+P(9)+P(10)
=10C6(0.48)^6(0.52)^4+10C7(0.48)^7(0.52)^3+10C8(0.48)^8(0.52)^2+10C9(0.48)^9(0.52)^1+10C10(0.48)^10
=0.1878+0.0991+0.0343+0.0070+0.0007
=0.3289
The answer: 0.3289

c] Less than 6
P(x<6)=1-P(x>=6)
=1-0.3289
=0.6711
7 0
3 years ago
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Ne4ueva [31]
I believe 20 is your answer. Tell me if I’m wrong.
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Al goes 8 mph Ben goes 22 mph in the opposite direction. How many hours has ben traveled when they are 180 miles apart?
NeTakaya

after 6 hours Al and Ben will be 180 miles apart.

(22 * x) + (8 * x) = 180

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3 years ago
The greatest product of a 3 digit number and a 1 digit number is 8,891. is it correct?
xz_007 [3.2K]
<span> no, 9 is the biggest single digit number and 999 is the biggest 3 digit number. 9x999 is 8991 <span> <span> </span></span></span>
6 0
4 years ago
Read 2 more answers
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