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Orlov [11]
3 years ago
14

What is the solution to this system of equations? x − 2y = 15 2x + 4y = -18

Mathematics
1 answer:
Alina [70]3 years ago
3 0

Step-by-step explanation:

just substitute them in the x and y variables.

if the answer is equal to the answers on the other side of the equation than it correct

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Solve for x x=750+125.75x
olga2289 [7]
X=750+125.75x
subtract to variable (x) on one side
x-125.75x=750+125.75x-125.75x
-124.75x=750
divide -124.75 to get variable (x) by itself
-124.75x/-124.75=750/-124.75
x=-3000/499
or
x=-6 6/499
or
x=-6.01202

7 0
3 years ago
If E = [9, -6], what is the length of E.
Marrrta [24]

Answer:

16

Step-by-step explanation:

Interval E contains (9,8,7,6,5,4,3,2,1,0,-1,-2,-3,-4,-5,-6)

so the numbers of the interval equals 16

3 0
3 years ago
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How many dots will figure n have? Explain how you know this.
LenKa [72]
N = ((n-1) + 4) + 4, to my understanding. 
although your answers seem right written in the columns, but your method of applying numbers to equation seems incorrect in 'expand' column. for example, answer for 3 should be something like this...
3   21   17+4
4   25    21+4
hope it helps.
5 0
3 years ago
Read 2 more answers
8 x 10^-3 is how many times as great as 4 x 10^-6
mamaluj [8]

For this case we can rewrite the expressions as:

3 * 10 ^ {- 3} = 0.003

That is, we run the decimal three times to the left.

4 * 10 ^ {- 6} = 0.000004

That is, we run the decimal six times to the left.

So:

0.003-0.000004 = 0.002996

So, we have that 3 * 10 ^ {- 3}is 0.002996 times bigger than 4 * 10 ^ {- 6}

Answer:

3 * 10 ^ {- 3}is 0.002996 times bigger than 4 * 10 ^ {- 6}

7 0
3 years ago
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Help me please!!!!!!!!!!!!!!!1
Cloud [144]
Less than 2 videos = 0 or 1 videos

P(1) = 1 - 0.1 - 0.3 - 0.2 - 0.1 = 0.3

P(0 or 1 video) = 0.1 + 0.3 = 0.4

Answer: 0.4
8 0
3 years ago
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