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yuradex [85]
3 years ago
7

What is the equation of the line that passes through the points (-8,8) and (4,-1)​

Mathematics
2 answers:
jeka57 [31]3 years ago
6 0
The person above me is correct !!
masha68 [24]3 years ago
5 0

Answer:

y = (-3/4)x + 2

Step-by-step explanation:

Find the slope of this line.  Note how the first x-coordinate (-8) becomes 4, a jump of 12, and how the first y-coordinate (8) becomes -1, a decrease of 9.  Then the slope is

m = (change in y) / (change in x) = -9/12 = m = -3/4

Find the y-intercept from this data using the slope-intercept form:

y = mx + b becomes  8 = (-3/4)(-8) + b when x = -8, y = 8 and m = -3/4.

Solving this equation for b, we get:

                                     8 = 6 + b, so that b must be 2.

The desired equation is y = (-3/4)x + 2.

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How do I do number 4​
nikitadnepr [17]

Answer:

its 6.40

Step-by-step explanation:

you have to use the distance formula which is

d=\sqrt(x2-x1)^{2}  + (y2-y1)^2

so points C is (-5,-1) and D is (0,3)

then you substitute the x

0--5=5^2

then

3--1+4^2=16

25+16=41

then square rout that and it equals 6.40

7 0
3 years ago
Using the Empirical Rule, it is found that:
AveGali [126]

Considering that the mean of the normal distribution is the same as the median, the median is of 88%.

<h3>What does the Empirical Rule state?</h3>

It states that, for a normally distributed random variable:

  • Approximately 68% of the measures are within 1 standard deviation of the mean.
  • Approximately 95% of the measures are within 2 standard deviations of  the mean.
  • Approximately 99.7% of the measures are within 3 standard deviations of the mean.

For the normal distribution, the median is the same of the mean, that is, the median is of 88%.

More can be learned about the Empirical Rule and the normal distribution at brainly.com/question/24537145

#SPJ1

8 0
1 year ago
Mr. Muñoz has a coupon for 15% off his entire purchase. He buys binoculars for $105 and boots. He spends a total of $170 before
aleksandrvk [35]

$9.75

Step-by-step explanation:

total amount _ Binoculars amount

$170_$105=$ 65

therefore before discount boots cost $65

After tax boots cost=15/100 ×$65

15/20× 13

195/20

=$9.75

7 0
3 years ago
Factorise p-q-x(q-p)​
Fantom [35]

Answer:

(1 + x)(p - q)

Step-by-step explanation:

Given

p - q - x(q - p) ← distribute parenthesis by - x

= p - q - qx + px ← rearrange terms in p and terms in q

= p + px - q - qx ( factor first/second terms and third/fourth terms )

= p(1 + x) - q(1 + x) ← factor out (1 + x) from each term

= (1 + x)(p - q)

8 0
3 years ago
Please Help Me Out! I am back with a handful of geometry questions. I would like you to answer this question and explain or show
Citrus2011 [14]

Answer:

pretty sure its -3

Step-by-step explanation:

the first one is equal to 120 so the second one also needs to equal 120 so -3+123 would give you 120.

3 0
3 years ago
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