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slamgirl [31]
3 years ago
10

What is the equation of the line with a slope of 2 through the points 2,4

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
4 0

Answer:

y = 2x

Step-by-step explanation:

y=mx+b

m=2

x=2

y=4

4=2*2 + b

b = 4 - 4

b = 0

y = 2x

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What is the perimeter of the triangle shown on the coordinate plane, to the nearest tenth of a unit?
Karo-lina-s [1.5K]

Let us find the co ordinates of each vertex of the triangle .

Vertex A ( in firs second quadrant) = ( -5 ,3)

vertex B in third quadrant = ( -5, -5)

vertex C in fourth quadrant = ( 4, -2)

let us use distance formula AB^2 = ( -5 - 3)^2 + (-5 - -5 )^2 = 64 + 0

AB= 8

BC^2 = ( -2 - -5 )^2 + ( 4 - - 5)^2 = 9 + 81 = 90

BC = 9.48

AC^2 = ( -2 -3)^2 +( 4- -5)^2 = 25 + 81 = 106

AC= 10.29

Perimeter = sum of length of AB+ BC+ Ac = 8 + 10.29 + 9.48= 22.77

8 0
3 years ago
2−(−4)+3+(−6)−(−2)2, minus, left parenthesis, minus, 4, right parenthesis, plus, 3, plus, left parenthesis, minus, 6, right pare
Yuki888 [10]

Answer: 7

Step-by-step explanation:

2−(−4)+3+(−6)−(−2)2

solution:

– x – = +

– x + = –

= 2−(−4)+3+(−6)−(−2)2

= 6 + 3 + ( – 6) – ( 2 ) 2

= 9 + ( –6 ) – ( –2 ) 2

= 3 – (–2)2

= 3 – ( –4 )

= 7

4 0
3 years ago
Hey can you please help me posted picture of question
AlekseyPX
We have the following function:
 N (k):
 Where, the indepent variable is k
 The dependent variable is N
 For the function:
 k (n):
 the independent variable is n
 The dependent variable is k
 Thus,
 N (12) = 4
 k (4) = 12
 Answer:
 
TRUE
 
option A
8 0
3 years ago
4. A recent poll of 1079 adults finds that 55% of Americans support a more stringent immigration law. Construct a 99% confidence
Akimi4 [234]

Answer:

<em>0.5306</em><em>0.5694</em>

Step-by-step explanation:

USing the formuls for calculating the confidence interval for the population proportion;

CI = p±Z*√[p(1-p)/n]

p is the percentage proportion of the population 55%

Z is the z-score at 99% confidence interval = 2.576

n is the sample size = 1079

CI = 0.55 ± 2.576*[0.55(1-0.55)/√1079]

CI = 0.55 ± 2.576*[0.55(0.45)/√1079]

CI = 0.55 ± 2.576*[0.2475/√1079]

CI =  0.55 ± 2.576*[0.2475/32.85]

CI =  0.55 ± 2.576*[0.00753]

CI = 0.55 ±0.0194

CI =(0.55-0.0194, 0.55+0.0194)

CI = (0.5306, 0.5694)

<em>Hence, a 99% confidence interval of the proportion of the population that will support such a law is 0.5306</em><em>0.5694</em>

3 0
3 years ago
Calculate the slope of the line passing through each pair of points below.
Allisa [31]

Answer:

b. -1/2

c. 3/2

d. 1/-5

Step-by-step explanation:

Plug in the values into the slope formula and reduce/simplify

7 0
3 years ago
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