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Temka [501]
3 years ago
11

Need Help BadlyWhat is the solution

Mathematics
1 answer:
Kamila [148]3 years ago
5 0
Sqrt(1-3x)=x+3
[sqrt(1-3x)]^2=(x+3)^2
1-3x=(x+3)(x+3)
1-3x=x^2+6x+9
-3x=x^2+6x+8
0=x^2+9x+8

The answers are -1 and -8 BUT, we have to plug them back into the original equation to make sure we don't get a negative under the square root sign.

After doing this, we realize that only -1 works, so the answer is x=-1

Sorry that this took forever to answer. I was thinking of a good way to explain this, and if you need any further explanation, message me:)

Best wishes:)


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Can someone please tell me why we write a number as 'difference' in math?
uranmaximum [27]

Answer:

We need to do difference so we can have how many numbers differ between the 2 numbers

Step-by-step explanation:

For example: 5-2=? We want to know what is the difference between the number which is 3 hope I explained it the best I can!!

8 0
3 years ago
Complete the equation of the line through 2,1 and 5,-8
Neko [114]

Answer:

y - 1 = -3(x - 2)

Step-by-step explanation:

As we move from the point (2, 1) to the point (5, -8), x (the run) increases by 3 and y (the rise) decreases by 9.  Thus, the slope of this line is

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3 0
3 years ago
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What is 4/7 multiplied by 13/9
nevsk [136]

Answer:

52/63

Step-by-step explanation:

Here, we want to multiply two fractions

we have this as;

4/7 * 13/9

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4 0
3 years ago
198.9 grams ~ _____ milliliters
bezimeni [28]

Answer:

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Step-by-step explanation:

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2 years ago
PLEASE I NEED HELP WITH BOTTOM PART WILL MARK BRAINLIEST!!
kipiarov [429]

Answer:

13.

parallel: y = 1/3x -3

perpendicular: y = -3x - 3

14.

parallel: y = 4x - 1/2

perpendicular: y = -1/4x - 1/2

15.

parallel: y = -2x + 4

perpendicular: y= 1/2x + 4

16.

parallel: y = -2x-2

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17.

parallel: y = -2x+8

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Step-by-step explanation:

A perpendicular has a negative reciprocal slope and a parallel has the same slope

6 0
2 years ago
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