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ddd [48]
3 years ago
12

Please help me thank you

Mathematics
1 answer:
marusya05 [52]3 years ago
6 0
!.  Find the equation of line l
(-4, 2) , (3, -5)
m = (-5-2)/(3+4) = -7/7 = -1
y = mx + b
y = -x +b ( take a point and substitute x,y )
2 = 4 + b,    b = -2

y = -x -2 

Slope of perpendicular line  m =1 ( negative reciprocal)
y = x + b
2 = 1 + b,    b =1
y = x +1 

Now you need the point of intersection ( where they are equal to each other)
 - x -2 = x+1 
-3 = 2x,   x = - 3/2
Plug x =-3/2 in either line to find y
y = -3/2 +2/2 = - 1/2 

We have the point where the perpendicular meets the other line: 
M( -3/2, -1/2) 
We now have two points: P (1,2) and M and we can use the distance formula:
D =sqrt ( x2-x1)^2 + (y2-y1)^2 
D =  sqrt ( 1+3/2)^2 + (2+1/2) ^2 =sqrt ((5/2)^2 + (5/2)^2 =sqrt ( 50/4) = 5/2sqrt2

wow this one was long ....
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Convert 120435 (5square ) into decimal numbers​
Lapatulllka [165]

Answer:

347.037461955

Step-by-step explanation:

If you are taking the square root of 120,435. I would just put it into a calculator.

5 0
3 years ago
What is the circumference of circle T? Round your answer to the nearest tenth.
dsp73

Answer:

3.14 for T. Round to the nearest tenth.

16.4 miles

Step-by-step explanation:

C=2πr easy for me and im in middle school lol

hopes this helps

5 0
3 years ago
andre placed 7/8 gallon of water in a pot near his wood burning stove 1/5 gallon of water evaporates each hour how many hours wo
kvasek [131]
1/5 gallon    1 hour
7/8 gallon     x hour
x=(7/8)/(1/5)=(7/8)*5=35/8 hour =4 3/8 hour
5 0
3 years ago
Assume that the population proportion is 0.46. Compute the standard error of the proportion, σp, for sample sizes of 500,000; 1,
sladkih [1.3K]

Answer:

a) 0.00070

b) 0.00050

c) 0.00022

d) 0.00016

e) 0.00005

Step-by-step explanation:

Standard error for proportion formula

S.E = √P(1 - P)/n

Where P = proportion

n = number of samples

Assume that the population proportion is 0.46. Compute the standard error of the proportion, σp, for sample sizes of a) 500,000

S.E = √P(1 - P)/n

= √0.46 × 0.54/500000

= √ 4.968 ×10^-7

= 0.0007048404

≈ 0.00070

b) 1,000,000

√P(1 - P)/n

= √0.46 × 0.54/1000000

= 0.0004983974

≈ 0.00050

c) 5,000,000

√P(1 - P)/n

= √0.46 × 0.54/5000000

= √ 4.968 ×10^-8

= 0.0002228901

≈ 0.00022

d) 10,000,000

√P(1 - P)/n

= √0.46 × 0.54/10000000

= √2.484 ×10^-8

= 0.0001576071

≈ 0.00016

e) 100,000,000

√P(1 - P)/n

= √0.46 × 0.54/100000000

= √2.484 × 10^-9

= 0.0000498397

= 0.00005

4 0
3 years ago
What is 953 divided by 6
Flauer [41]
The answer is 158.8333333333333
5 0
3 years ago
Read 2 more answers
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