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julsineya [31]
3 years ago
15

Write an equation in slope

Mathematics
1 answer:
lyudmila [28]3 years ago
7 0

Answer:

y = 2x + 4

Step-by-step explanation:

You already know the slope, so now you need to find the y-intercept. You need to plug in the values of x and y into the equation, y = 2x + b.

y = 2x + b

2 = 2(-1) + b

2 = -2 + b

4 = b

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Explain why the equation 5|x|-7=7 has only one solution.
son4ous [18]

According to the condition, this equation has <u>two</u> solutions: -14/5 and 14/5.

Short explanation:

5|x|=14; ⇔ |x|=14/5; ⇒

\left[\begin{array}{ccc}x= -\frac{14}{5} \\x= \frac{14}{5} \\\end{array}

PS. it's correct, if to substitute the values of 'x' into the condition/equation.

3 0
3 years ago
2 questions in one!
laiz [17]

Answer:

Probability, eh?

Step-by-step explanation:

To figure out how likely an event is, we just put the number of the blue bands over the total number of 'other' bands.

Pretty easy!

\frac{6}{25}

(or do you want it in percent?)

24%%

(I remember there was a weird notation for these things, but I forgot it)

It is unlikely he will choose a blue band, as it is much more likely he will choose a 'other' band.

Remember, the smallest number for an event will make it the most unlikeliest to happen out of all the others.

Hope this helps!

P.S. Stay Safe, Wash Your Hands, etc.

3 0
3 years ago
find the equation of a line that goes through the point (2,-3) and is perpendicular to the line y= -2/5x+6
GarryVolchara [31]
Find the negative reciprocal of the given line's slope in order to determine what the slope of the line will be.

-2/5 -> -5/2 -> 5/2

Your line now looks like this: y = 5/2x + b

Now, substitute the given point into the y and x variables and solve for b.

   y = 5/2x + b
  -3 = 5/2(2) + b
  -3 = 5 + b
  -8 = b

You are now done. The line is y = 5/2x - 8.
6 0
3 years ago
Read 2 more answers
(25 points)
Licemer1 [7]
Here, y = -15 with x = -20
LCM of 15 & 20 is 60, so divide 15 & 20 from 60, 
60/15 = 4 & 60/20 = 3

Now, multiply the results with intial values, 
4y = 3x
y = 3/4 x

When y = 12, 
x = 12 * 4/3
x = 48 / 3
x = 16

In short, Your Answer would be 16

Hope this helps!

8 0
4 years ago
2ln(5x)=8 solve for x
White raven [17]
lnx=log_ex\\----------\\log_ab=c\iff a^c=b\\----------\\Domain:\\5x > 0\ \ \ |divide\ both\ sides\ by\ 5\\x > 0\\D:x\in\mathbb{R^+}\\----------------------\\2ln(5x)=8\ \ \ \ |divide\ both\ sides\ by\ 2\\\\ln(5x)=4\iff e^4=5x\\\\5x=e^4\ \ \ \ \ |divide\ both\ sides\ by\ 5\\\\\boxed{x=\frac{e^4}{5}\in D}
8 0
3 years ago
Read 2 more answers
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