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Minchanka [31]
2 years ago
14

Line C passes through the points (0, -5) and (2, -3). Line D has the equation y = 2/5x - 3 which statement is true

Mathematics
2 answers:
salantis [7]2 years ago
5 0

Answer:

a)

Step-by-step explanation:

hello :

the statement a) is true because the slope for D is 2/5

the slope for c is : ((-3)-(-5))/((2)-(0)) = 1

Degger [83]2 years ago
4 0
Line c has a positive slope since it goes from -5 to -3. and kind d’s slope is 2/5 which is also positive so the answer is a)
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What are the coordinates of the intersection of the graphs of 3x - y^2 = 12 and y = -3
inessss [21]

Answer:

(7,-3)

Step-by-step explanation:

y = -3

substitute in the first equation

3x - y^2 = 12

3x - (-3)^2 = 12

3x - 9 = 12

3x = 12 + 9

3x = 21

x = 7

coordinates of intersection (7,-3)

3 0
2 years ago
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall sem
Lorico [155]

Answer:

1. 1340

2. Variance = 47200, standard deviation = 217.25556

Step-by-step explanation:

1-

If X is the random variable that give the number of admissions, then the expected number of admissions<em> E[X]</em> for the fall semester is

1080*P(X=1080)+1380*P(X=1380)+1540*P(X=1540) =

1080*0.4+1380*0.1+1540*0.5 = 1340

2-

The <em>variance</em> is defined as

\sigma^2=E[X^2]-(E[X])^2}

We have

E[X^2]=(1080)^2*0.4+(1380)^2*0.1+(1540)^2*0.5=1842800

whereas

(E[X])^2=(1340)^2=1795600

So the variance equals

\sigma^2=1842800-1795600=47200

The <em>standard deviation is just the square root of the variance</em>, so, the standard deviation is

\sigma=\sqrt{47200}=217.25556

8 0
3 years ago
Cost of a chair
pashok25 [27]
1,200 divided by 4= 3,000
3,000 is your answer.
5 0
3 years ago
If an eagle and a bumblebee are traveling at 8 km/hr, which has more momentum explain
Aleksandr-060686 [28]
The eagle would have more momentum because it has a larger mass.
6 0
3 years ago
9(4–5x)+2=7(6x–7) plz help!!
vaieri [72.5K]

Answer:

x=1

Step-by-step explanation:

9(4–5x)+2=7(6x–7)

Distribute

36 -45x +2 = 42x-49

Combine like terms

-45x +38 = 42x-49

Add 45x to each side

-45x +38 +45x = 42x+45x-49

38 = 87x-49

Add 49 to each side

38+49 = 87x-49+49

87 = 87x

Divide by 87

87/87 = 87x/87

1 =x

3 0
3 years ago
Read 2 more answers
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